Strategic Overview of Exar’s
acquisition of Hifn
March 11, 2009
Creating Optimized Connectivity 
AMS Solutions
Filed by: Exar
Corporation
Pursuant to Rule 425 under the
Securities Act of 1933
Subject Company: hi/fn, inc.
(Commission File No.: 0-24765)

Cautionary Remarks
2
3/11/09
Cautionary Statement Regarding Forward-Looking Statements
This document contains certain forward-looking statements relating to Exarf and their expectations for Exar’s proposed acquisition of hi/fn.  All statements included in this document 
concerning activities, events or developments that Exar and/or hi/fn expects, believes or anticipates will or may occur in the future are forward-looking statements.  Such statements
can generally be identified by words such as “anticipates”, “expects”, “intends”, “will”, “could”, “believes”, “estimates”, “continue” and similar expressions.  Actual results could differ
materially from the results discussed in the forward-looking statements.  Forward-looking statements are based on current expectations and projections about future events and
involve known and unknown risks, uncertainties and other factors that may cause actual results and performance to be materially different from any future results or performance
expressed or implied by forward-looking statements, including the following: the risk that the exchange offer and the merger will not close because of a failure to satisfy one or more of
the offer conditions or closing conditions; the risk that Exar’s business and/or Hifn’s business will have been adversely impacted during the pendency of the exchange offer and the
merger; the risk that the operations will not be integrated successfully; and the risk that the expected cost savings and other synergies from the transaction may not be fully realized,
realized at all or take longer to realize than anticipated; the ability to retain key employees and other economic, business, competitive and/or regulatory factors affecting the business
of Exar and hi/fn generally, including those set forth in the filings of Exar and hi/fn with the Securities and Exchange Commission, especially in the “Risk Factors” and “Management’s
Discussion and Analysis of Financial Condition and Results of Operations” sections of their respective annual reports on Form 10-K and quarterly reports on Form 10-Q, their current
reports on Form 8-K and other SEC filings.  Exar and hi/fn are under no obligation to (and expressly disclaim any obligation to) update or alter their forward-looking statements
whether as a result of new information, future events, or otherwise. 
About the Transaction
In connection with the exchange offer, Exar filed a registration statement on Form S-4 and a Tender Offer Statement on Schedule TO on March 5, 2009 with the Securities Exchange
Commission (the “SEC”) and hi/fn filed a solicitation/recommendation statement on Schedule 14D-9 with the SEC on March 5, 2009. These documents contain important information
about the transaction and investors and security holders are urged to read these documents carefully before any decision is made with respect to the exchange offer. Investors and
security holders may obtain free copies of the registration statement on Form S-4, Schedule TO, Schedule 14D-9 as well as other filings containing information about Exar and hi/fn
without charge, at the SEC’s website (http://www.sec.gov).  A free copy of the exchange offer materials, may also be obtained from Exar’s website at www.exar.com or from hi/fn’s
website at www.hifn.com . You may also read and copy any reports, statements and other information filed by Exar or hi/fn with the SEC at the SEC public reference room at 100 F
Street N.E., Room 1580, Washington, D.C. 20549. Please call the SEC at (800) 732-0330 or visit the SEC’s website for further information on its public reference room. Copies of the
exchange offer materials may also be obtained at no charge from BNY Mellon Shareholder Services, the information agent for the offer, by telephone from 9 a.m. to 6 p.m. New York
City Time, Monday through Friday, except for bank holidays, toll free at 1-866-208-8754 (from within the U.S., Canada or Puerto Rico) or collect at 1-201-680-6579 (from outside the
U.S.).
Generally Accepted Accounting Principles
In this presentation, we include various financial measures, non-GAAP gross margin, non-GAAP research and development expenses, non-GAAP selling, general and administrative
expenses, non-GAAP operating expenses, non-GAAP operating income (loss), non-GAAP net income (loss), and non-GAAP diluted earnings (loss) per share, which are adjusted to
exclude from our GAAP results all stock-based compensation expense, amortization of acquired intangible assets, fair value adjustment of acquired inventories, acquired in-process
research and development expenses, merger-related costs, separation cost of executive officers, acceleration of depreciation on abandoned equipment, goodwill and other intangible
asset impairment,  impairment charges on investments, net of realized gains, income tax effects, a charge establish deferred tax asset valuation allowance, and an income tax benefit
from the closure of federal tax audit.  These non-GAAP measures are not in accordance with, or an alternative for measures prepared in accordance with GAAP, and may be different
from non-GAAP measures used by other companies. In addition, these non-GAAP measures are not based on any comprehensive set of accounting rules or principles. The Company
believes that non-GAAP measures have limitations in that they do not reflect all of the amounts associated with the Company’s results of operations as determined in accordance with
GAAP. These measures should only be used to evaluate the Company’s results of operations in conjunction with the corresponding GAAP measures.

EXAR Overview
3
•
Repositioning Exar
for Growth & Profitability
•
Attracted a proven veteran management team
•
Added world-class engineering talent
•
Laser focus on product marketing, ROI, and short time-to-revenue
•
Leveraged expanded channel, cross-selling and design win focus
•
Thirty
new
product
releases
in
CY
2009
(2X
most
ever
in
one
year)
•
Generated > $51M in cash in the past 13 quarters
•
REV/employee
up
31%
Mar-07
to
Sep-08
(Proforma
$335K)
•
$22M
in
annualized
Op-Ex
savings
in
the
past
21
months
(thru
12/08q)
•
Purchased
>
$100M
of
stock
in
past
21
months
(thru
12/08q)
•
Strong
Balance
Sheet
>
$257M
cash
(12/08q)
+
Net
Tangible
Assets
•
We will exit the recession with an enhanced
product portfolio -
we will take market share &
grow revenue!
3/11/09

EXAR = Bringing Technology to Life !
4
Consumer
Portable
Gaming
Display
Media Gateway
Storage
Industrial
Security
HVAC
Lighting Control
Motor Control
PC Modules
Factory Automation
Communications
Voice Infrastructure
Data Infrastructure
Switch/Routers
Modems
LAN
3/11/09

EXAR Management Team
5
Pete Rodriguez
President & CEO
TECHNOLOGY
George Apostol
Sr. VP & CTO
MARKETING
Paul Pickering
Sr. VP
FINANCE
Scott Kamsler
Sr. VP & CFO
HR
Diane Hill
VP
ENGINEERING
Hung Le
VP
SALES
Bentley Long
VP
3/11/09

EXAR Analog Mixed - Signal Excellence
6
Digital
Analog
Mixed Signal
3/11/09
Mappers
Framers
Protocol
Engines
UARTs
Digital Power
Control
High Speed
Asynchronous
Bridges
SAS, SATA
Jitter Attenuators
15KV ESD
Protection
PLLs, CDRs
Line Interface Units
GHz PHYs
High Speed
Multi-Protocol
Transceivers
LED Drivers
Fractional
Gain
Switched
Capacitor
High Power
Density
Regulators
High Frequency
Switching
Controllers

EXAR Product Lines
7
Digital
Power
Powering
Connectivity
Wireless
3/11/09

EXAR Worldwide Sales & Support
8
Future Electronics Corporate Locations
Nu Horizons Corporate Locations
Fremont, CA
Headquarters
Design
Manufacturing
Sales & Marketing
Taipei, Taiwan
Shenzhen, China
Tokyo, Japan
Billerica, MA
Montréal, Canada
Beijing, China
Seoul, Korea
Atlanta, GA
Palatine, IL
Plano, TX
Munich, Germany
Paris, France
London, UK
Shanghai, China
Ipoh, Malaysia
3/11/09

EXAR Channel Partners
9
# of
Components
Concept
Discontinuance
Mass Production
Japan
NDS
Local
Distys
Asia NDS
Pan-Asian
& Local
Distys
• Global
• Regional
• Niche
Europe
NDS
Pan-Euro
& Local
Distys
3/11/09

EXAR
P&L
Trends
(Mar
07q
–
Dec
08q)
10
-5
0
5
10
15
20
25
30
35
40
Mar-07
Jun-07
Sep-07
Dec-07
Mar-08
Jun-08
Sep-08
Dec-08
As If Rev
Rev
Non-GAAP GP
As If Opex
Non-GAAP Opex
Non-GAAP Net Inc (Loss)
32.5
35.5
36.9
34.5
30.8
33.1
32.7
26.3
20.3
19.9
18.1
18.1
19.2
11.1
13.5
17.8
17.3
16.5
14.8
10.9
10.6
12.1
11.9
12.8
15.7
16.1
11.9
11.6
(0.8)
2.7
3.5
2.0
(1.8)
(1.7)
0.8
1.8
18.6
17.1
25.2
28.3
32.2
32.7
26.3
15.7
3/11/09

EXAR Balance Sheets
11
3/11/09
(Millions)
Mar-07
Mar-08
Jun-08
Sep-08
Dec-08
Cash & marketable securities
$356.1
$268.9
$258.6
$260.8
$257.4
Accounts receivable
4.4
13.7
13.5
12.7
7.4
Inventories
4.8
14.2
14.4
15.4
18.1
Other current assets
6.1
4.4
4.6
3.7
4.7
Total current assets
371.3
301.1
291.1
292.6
287.6
P,P&E, net
25.4
46.1
45.3
43.8
44.1
Goodwill & intangibles
10.6
73.6
71.8
70.1
8.1
Other long-term assets
13.8
3.3
3.5
2.6
2.7
Total assets
$421.2
$424.2
$411.8
$409.1
$342.5
Accts payable & accrued comp
$5.6
$14.5
$15.3
$14.4
$12.1
Deferred Income
-
12.4
12.7
12.4
10.6
Other current liabilities
8.7
8.1
8.7
8.6
6.4
Total current liabilities
14.2
35.1
36.8
35.4
29.1
Long-term obligations
0.2
18.1
17.7
17.2
17.6
Total liabilities
14.4
53.1
54.5
52.6
46.7
Shareholders' equity
406.8
371.1
357.3
356.5
295.8
Total liabilities and shareholders'
equity
$421.2
$424.2
$411.8
$409.1
$342.5
Shares outstanding at quarter end
36.2
43.9
42.7
42.8
42.9
Amounts are rounded

Strategic Rationale for Hifn
•
Objectives
•
Create a leading solution provider of optimized connectivity products   
•
Drive revenue growth and profitability with increased functionality and system level solutions
•
Complementary technologies
•
Hifn
technology is used by major systems companies to accelerate, secure, classify and compress
data over various connections and stored in systems
•
Enables
Exar
to
extend
market
position
in
connectivity
products
by
providing
broader
solutions
with expanded content, system functionality and software
•
Both technology efforts addressing Telecom, Network and Storage applications with optimized
connectivity solutions and supporting application software
•
Shared and expanded industry position
•
Shared customers –
Cisco, Huawei, Alcatel-Lucent, HP, ZTE 
•
Hifn
customers include top tier storage systems OEM’s like EMC, Quantum, Brocade & NetApps
•
Exar
can
extend
Hifn
product
base
into
to
a
wider
telecom
customer
base
and
into
the
broader
industry including the industrial market
•
Company cultures
•
Both companies are engineering focused to provide leading edge silicon solutions
•
Committed to excellence and developing products that solve meaningful customer challenges 
12
3/11/09

Strategic Rationale -
continued
•
World-Class
Technologists
Marketing
leading
design
expertise
and
patented
technology for hardware accelerated encryption, compression & deduplication
•
Architects have 20+ years of industry experience
•
Active participants that drive standards bodies
•
Develop complex SoC
& PCB level products
•
Experienced application software developers
•
Ethernet, Embedded Processors
•
Network security, compression, de-duplication, RAID, system software
•
Expanded Sales Channel
•
Complementary
sales
channels
provide
broader
customer
access
and
support
•
Multiple
product
lines
will
enable
full
solution
selling
to
major
accounts
–
cross-selling
opportunities for increased silicon content for each design win
•
Synergistic
with
Exar
AMS
to
deliver
higher
levels
of
integration
for
value
added solutions
•
Additive to Exar
mixed-signal and power management capabilities for more robust solutions
•
Leverage Exar’s
physical design capabilities & suppliers to improve design efficiency & lower cost
•
Acquired
IP
can
be
implemented
into
current
Exar
roadmap
reducing
development
costs
•
Cost Synergies > $5M/yr
13
3/11/09
-

Broadened Connectivity Solutions
14
3/11/09
The Exar solution moves from Physical Interface
And Access Control to expanded capabilities
including Security, Compression and Classification

What is Driving the Network?
•
Migration to packet-based infrastructure
•
Cost, flexibility, service revenue
•
Ubiquity of connected devices
•
Multimedia = more bandwidth to more users
•
Cloud computing model
•
SMB outsourcing IT to manage costs
•
‘Mega datacenter’
economies of scale
•
Virtualized enterprise datacenters
•
Green initiatives = less power
•
20% of hardware cost in 2000, 70% in 2010*
•
Power density increasing 15% annually*
•
Network and storage security
•
Efficient utilization of compute, network and storage resources
•
Power efficiency
•
Space efficiency
15
*Source:  IDC
3/11/09

What is Driving Storage?
•
Capacity
•
45
GB
of
data
for
every
human
on
Earth*
•
10X
growth from 2006 to 2011 (60% CAGR)*
•
Multiplication effect
•
Performance
•
Becoming an integral part of the network
•
Backup moving from tape to disk-based
•
Migration to SSD in some segments
•
Lower power, higher performance, more robust
•
Security
•
Corporate governance
•
Protecting personal information
•
Efficiency
•
Data compression becoming common
•
Minimizing data redundancy is a necessity
•
Increasing back-up/restore speeds is critical
16
*Source:  IDC
3/11/09

Strategic Opportunities -
Overview
17
3/11/09

Strategic Opportunities:
18
3/11/09

Strategic Opportunities:
19
3/11/09

Strategic Opportunities:
20
3/11/09

Strategic Opportunities:
21
3/11/09

Exar Solution Stack
22
3/11/09

Shared Application Examples
23
3/11/09
Hifn/Exar
ASP-based
Line Cards
Exar/Hifn
Exar/Hifn
SATA/SAS/
SATA/SAS/
RAID Line
RAID Line
Card
Card
Exar/ Hifn
Exar/ Hifn
SATA/SAS/
SATA/SAS/
RAID
RAID
Controller
Controller
Hifn ASP-
based
Cards
Exar/Hifn
Exar/Hifn
RAID
RAID
Controller
Controller
Hifn Capacity
Hifn Capacity
Optimization
Optimization
Card
Card
•
Security
•
Firewall
•
WAFS
•
Replication
•
10Gb Switch
•
Trunking
•
Clustering
•
Redundant
Exar Digital & Linear Power Solutions

Revenue Trends –
Exar/Hifn/Combined
24
3/11/09
Combined Revenue
16
17
19
25
28
32
33
26
11
12
11
11
9
10
9
8
0
5
10
15
20
25
30
35
40
45
Mar-07
Jun-07
Sep-07
Dec-07
Mar-08
Jun-08
Sep-08
Dec-08
$(M)
Exar
Rev
Hifn
Rev

Revenue/Non-GAAP GM %/Non-GAAP Net Inc (Loss)
HIFN
11
11
11
9
10
9
8
12
(5)
0
5
10
15
20
25
30
35
40
Mar-07
Jun-07
Sep-07
Dec-07
Mar-08
Jun-08
Sep-08
Dec-08
-10%
0%
10%
20%
30%
40%
50%
60%
70%
80%
Revenue
Net Inc (Loss)
Gross Margin %
EXAR
16
17
19
25
28
32
33
26
(5)
0
5
10
15
20
25
30
35
40
Mar-07
Jun-07
Sep-07
Dec-07
Mar-08
Jun-08
Sep-08
Dec-08
-10%
0%
10%
20%
30%
40%
50%
60%
70%
80%
Revenue
Net Inc (Loss)
Gross Margin %
Note: Please see the appendix for the GAAP to Non-GAAP reconciliations for both Exar and Hifn.
25
3/11/09

Appendix
26
3/11/09

Transaction Summary
•
Consideration:
Exar will acquire all of the outstanding shares of Hifn
common stock pursuant to an exchange offer, followed by
a second step merger.  In the exchange offer Hifn
stockholders will be able to elect to either receive (i) 0.3529
shares of Exar common stock and $1.60 in cash; or (ii)
$4.00 in cash   
•
Transaction Timing
Expected to be competed during the second calendar
quarter of 2009
•
Transaction Value
Approximately $60M (Includes Hifn Net Cash of $35M as of
12/31/08)
•
Expected Synergy
Approximately $5M annualized, within two to three quarters
•
Executive Management:
Pete Rodriguez, Exar President and CEO, J. Scott
Kamsler, Senior VP, CFO
•
Board of Directors
Adding 1 director from Hifn (Albert Sisto, Hifn Chairman
and CEO) for a total of 8 Directors
On February 23, 2009 Exar Signed a Definitive Agreement to Acquire Hifn  
–
Unanimously Approved by the Boards of both Companies
27
3/11/09

Hifn Highlights
•
Business Description:
Hifn offers a broad set of products that protect information
at risk while it is in-transit across the network or at-rest,
stored on back-up arrays or tape devices
•
Ticker Symbol:
Hifn is traded on Nasdaq
•
Financial Overview:
Net revenue for fiscal 2008 was $39.4 million (9/30/08
year end); net revenue for fiscal year 2009 first quarter
(12/31/08) was $8 million
•
Principal Customers:
As of 12/31/08: Cisco Systems (38%), EMC (10%), HP (10%)
•
Sales and Distribution
Hifn sales offices, manufacturing representatives,
and distribution partners (Avnet in North America and
China )
•
Manufacturing:
Toshiba Corporation, IBM and TSMC
•
Employees
Approximately 150 employees (as of 1/31/09) with 42% in
research and development
28
3/11/09

Exar
GAAP to Non-GAAP Reconciliation of Results (1/2)
29
3/11/09
Number of Months Ended >>>
9-MTHS
(In thousands, except per share amounts)
Mar 31, 07
Jun 30, 07
Mar 30, 07
Dec, 07
Mar 30, 08
JUN 29 08
Sep 28, 08
Dec 28, 08
Mar 31, 07
Mar 30, 08
Mar 30, 08
Net Sales
15,660
$     
17,101
$     
19,173
$     
25,207
$     
28,262
$     
32,211
$     
32,748
$     
26,305
$     
68,502
$     
89,743
$     
91,264
$     
GAAP gross margin $
10,330
$     
11,357
$     
10,484
$     
7,567
$       
10,705
$     
14,470
$     
15,005
$     
10,704
$     
46,534
$     
40,112
$     
40,179
$     
Stock-based compensation
14
28
106
361
128
192
174
118
91
623
484
Amortization of acquired intangible assets
240
240
1,158
2,539
1,515
955
955
783
960
5,452
2,693
Fair value adjustment of acquired inventories
-
-
341
1,458
432
-
-
-
-
2,231
-
Merger-related costs
-
-
16
-
36
115
-
-
-
52
115
Acceleration of depreciation on abandoned equipment
-
-
-
-
-
-
-
300
-
-
300
Non-GAAP gross margin $
10,584
$     
11,625
$     
12,105
$     
11,925
$     
12,816
$     
15,732
$     
16,134
$     
11,905
$     
47,585
$     
48,470
$     
43,771
$     
GAAP gross margin %
66.0%
66.4%
54.7%
30.0%
37.9%
44.9%
45.8%
40.7%
67.9%
44.7%
44.0%
Stock-based compensation
0.1%
0.2%
0.6%
1.4%
0.5%
0.6%
0.5%
0.5%
0.1%
0.7%
0.5%
Amortization of acquired intangible assets
1.5%
1.4%
6.0%
10.1%
5.4%
3.0%
2.9%
3.0%
1.4%
6.1%
3.0%
Fair value adjustment of acquired inventories
-
-
1.8%
5.8%
1.5%
-
-
-
-
2.5%
-
Merger-related costs
-
-
-
-
0.1%
0.4%
-
-
-
0.1%
0.1%
Acceleration of depreciation on abandoned equipment
-
-
-
-
-
-
-
1.1%
-
-
0.3%
Non-GAAP gross margin %
67.6%
68.0%
63.1%
47.3%
45.3%
48.8%
49.3%
45.3%
69.5%
54.0%
48.0%
GAAP research and development expenses
6,325
$       
6,058
$       
7,452
$       
8,890
$       
8,259
$       
8,092
$       
8,133
$       
8,092
$       
25,838
$     
30,660
$     
24,317
$     
Stock-based compensation
218
224
324
389
270
358
481
392
1,181
1,207
1,231
Amortization of acquired intangible assets
-
-
-
-
-
263
263
200
-
-
726
Merger-related costs
-
-
253
9
131
-
-
-
-
393
-
Acceleration of depreciation on abandoned equipment
-
-
-
-
-
-
-
437
-
-
437
Non-GAAP research and development expenses
6,107
$       
5,834
$       
6,875
$       
8,492
$       
7,858
$       
7,471
$       
7,389
$       
7,063
$       
24,657
$     
29,060
$     
21,923
$     
GAAP selling, general and administrative expenses
6,834
$       
5,531
$       
8,503
$       
12,071
$     
11,793
$     
11,301
$     
9,746
$       
9,099
$       
24,925
$     
37,899
$     
30,146
$     
Stock-based compensation
831
509
938
1,035
884
809
435
768
3,077
3,366
2,012
Amortization of acquired intangible assets
-
-
196
474
266
162
162
122
-
936
446
Merger-related costs
-
-
766
509
717
541
-
-
-
1,992
541
Separation costs of executive officers
985
-
-
465
-
-
-
-
1,649
465
-
Acceleration of depreciation on abandoned equipment
-
-
-
-
-
-
-
437
-
-
437
Non-GAAP selling, general and administrative expenses
5,018
$       
5,022
$       
6,603
$       
9,588
$       
9,926
$       
9,789
$       
9,149
$       
7,772
$       
20,199
$     
31,140
$     
26,710
$     
GAAP operating expenses
13,159
$     
11,589
$     
24,755
$     
20,961
$     
185,243
$   
19,393
$     
17,879
$     
76,867
$     
50,763
$     
242,550
$   
114,139
$   
Stock-based compensation
1,049
733
1,262
1,424
1,154
1,167
916
1,160
4,258
4,573
3,243
Amortization of acquired intangible assets
-
-
196
474
266
425
425
322
-
936
1,172
Acquired in-process research and development
-
-
8,800
-
-
-
-
-
-
8,800
-
Merger-related costs
-
-
1,019
518
848
541
-
-
-
2,385
541
Separation costs of executive officers
985
-
-
465
-
-
-
-
1,649
465
-
Acceleration of depreciation on abandoned equipment
-
-
-
-
-
-
-
874
-
-
874
Goodwill and other intangible asset impairment
-
-
-
-
165,191
-
-
59,676
-
165,191
59,676
Non-GAAP operating expenses
11,125
$     
10,856
$     
13,478
$     
18,080
$     
17,784
$     
17,260
$     
16,538
$     
14,835
$     
44,856
$     
60,200
$     
48,633
$     
GAAP operating income (loss)
(2,829)
$     
(232)
$        
(14,271)
$   
(13,394)
$   
(174,538)
$  
(4,923)
$     
(2,874)
$     
(66,163)
$   
(4,229)
$     
(202,438)
$  
(73,960)
$   
Stock-based compensation
1,063
761
1,368
1,785
1,282
1,359
1,090
1,278
4,349
5,196
3,727
Amortization of acquired intangible assets
240
240
1,354
3,013
1,781
1,380
1,380
1,105
960
6,388
3,865
Fair value adjustment of acquired inventories
-
-
341
1,458
432
-
-
-
-
2,231
-
Acquired in-process research and development
-
-
8,800
-
-
-
-
-
-
8,800
-
Merger-related costs
-
-
1,035
518
884
656
-
-
-
2,437
656
Separation costs of executive officers
985
-
-
465
-
-
-
-
1,649
465
-
Acceleration of depreciation on abandoned equipment
-
-
-
-
-
-
-
1,174
-
-
1,174
Goodwill and other intangible asset impairment
-
-
-
-
165,191
-
-
59,676
-
165,191
59,676
Non-GAAP operating income (loss)
(541)
$        
769
$          
(1,373)
$     
(6,155)
$     
(4,968)
$     
(1,528)
$     
(404)
$        
(2,930)
$     
2,729
$       
(11,730)
$   
(4,862)
$     
Notes: Certain amounts may not total due to rounding.
Certain
amounts
previously
reported
above
have
been
reclassified
to
conform
to
the
current
periods'
presentation.
EXAR CORPORATION AND SUBSIDIARIES (Unaudited)
12-MTHS
3-MTHS

Exar GAAP to Non-GAAP Reconciliation of Results (2/2)
30
3/11/09
Number of Months Ended >>>
9-MTHS
(In thousands, except per share amounts)
Mar 31, 07
Jun 30, 07
Mar 30, 07
Dec, 07
Mar 30, 08
JUN 29 08
Sep 28, 08
Dec 28, 08
Mar 31, 07
Mar 30, 08
Mar 30, 08
GAAP net income (loss)
1,255
$       
4,611
$       
(16,410)
$   
(11,682)
$   
(172,398)
$  
(2,461)
$     
(2,187)
$     
(63,823)
$   
8,024
$       
(195,879)
$  
(68,471)
$   
Stock-based compensation
1,063
761
1,368
1,785
1,282
1,359
1,090
1,278
4,349
5,196
3,727
Amortization of acquired intangible assets
240
240
1,354
3,013
1,781
1,380
1,380
1,105
960
6,388
3,865
Fair value adjustment of acquired inventories
-
-
341
1,458
432
-
-
-
-
2,231
-
Acquired in-process research and development
-
-
8,800
-
-
-
-
-
-
8,800
-
Merger-related costs
-
-
1,035
518
884
656
-
-
-
2,437
656
Separation costs of executive officers
985
-
-
465
-
-
-
-
1,649
465
-
Acceleration of depreciation on abandoned equipment
-
-
-
-
-
-
-
1,174
-
-
1,174
Goodwill and other intangible asset impairment
-
-
-
-
165,191
-
-
59,676
-
165,191
59,676
Impairment charges on investments, net of realized gains
(7)
(21)
418
(20)
39
(218)
1,427
(82)
905
416
1,127
Income tax effects
(859)
(253)
(3,169)
2,691
1,035
(161)
142
(103)
(2,394)
304
(122)
Charge to establish deferred tax asset valuation allowance
-
-
8,323
-
-
-
-
-
-
8,323
-
Income tax benefit from the closure of federal tax audit
-
(1,852)
(81)
-
-
-
-
-
-
(1,933)
-
Non-GAAP net income (loss)
2,677
$       
3,486
$       
1,979
$       
(1,772)
$     
(1,754)
$     
555
$          
1,852
$       
(775)
$        
13,493
$     
1,939
$       
1,632
$       
GAAP diluted earnings (loss) per share
0.03
$         
0.13
$         
(0.39)
$       
(0.24)
$       
(3.77)
$       
(0.06)
$       
(0.05)
$       
(1.49)
$       
0.22
$         
(4.55)
$       
(1.60)
$       
Stock-based compensation
0.03
0.02
0.03
0.04
0.03
0.03
0.03
0.03
0.12
0.12
0.09
Amortization of acquired intangible assets
0.01
0.01
0.03
0.06
0.04
0.03
0.03
0.03
0.03
0.16
0.09
Fair value adjustment of acquired inventories
-
-
0.01
0.03
0.01
-
-
-
-
0.05
-
Acquired in-process research and development
-
-
0.21
-
-
-
-
-
-
0.21
-
Merger-related costs
-
-
0.02
0.01
0.02
0.02
-
-
-
0.06
0.02
Separation costs of executive officers
0.03
-
-
0.01
-
-
-
-
0.05
0.01
-
Acceleration of depreciation on abandoned equipment
-
-
-
-
-
-
-
0.03
-
-
0.03
Goodwill and other intangible asset impairment
-
-
-
-
3.61
-
-
1.39
-
3.80
1.39
Impairment charges on investments, net of realized gains
-
-
0.01
-
-
(0.01)
0.03
-
0.03
0.01
0.03
Income tax effects
(0.02)
(0.01)
(0.07)
0.05
0.02
-
-
-
(0.07)
0.02
-
Charge to establish deferred tax asset valuation allowance
-
-
0.19
-
-
-
-
-
-
0.20
-
Income tax benefit from the closure of federal tax audit
-
(0.05)
-
-
-
-
-
-
-
(0.04)
-
Non-GAAP diluted earnings (loss) per share
0.07
$         
0.10
$         
0.05
$         
(0.04)
$       
(0.04)
$       
0.01
$         
0.04
$         
(0.02)
$       
0.37
$         
0.04
$         
0.04
$         
Shares used in diluted earnings (loss) per share ---
GAAP
36,369
36,134
41,796
49,301
45,712
42,973
42,735
42,889
36,480
43,090
42,866
The effect of dilutive potential common shares due to
reporting Non-GAAP net income
95
-
626
-
-
260
246
-
137
540
-
The effect of removing stock-based compensation expense
under SFAS 123R for Non-GAAP presentation purpose
(115)
13
350
-
-
(81)
(130)
-
(225)
-
-
Shares
used
in
diluted
earnings
(loss)
per
share
---
Non-GAAP
36,349
36,147
42,772
49,301
45,712
43,152
42,851
42,889
36,392
43,630
42,866
EXAR CORPORATION AND SUBSIDIARIES (Unaudited)
3-MTHS
12-MTHS
Notes: Certain amounts may not total due to rounding.
Certain amounts previously reported above have been reclassified to conform to the current periods' presentation.

Hifn
GAAP to Non-GAAP Reconciliation of Results
31
3/11/09
Mar 31, 07
Jun 30, 07
Sep 30, 07
Dec 31, 07
Mar 31, 08
Jun 30, 08
Sep 30, 08
Dec 31, 08
Net revenue
11,029
11,671
10,998
10,929
9,265
10,220
9,004
7,958
GAAP gross profit
7,433
7,707
7,530
7,457
6,143
6,551
5,444
5,554
Stock-based compensation
7
12
6
7
8
7
8
13
Non-GAAP gross profit
7,426
7,695
7,524
7,450
6,135
6,544
5,436
5,541
GAAP gross margin %
67.4%
66.0%
68.5%
68.2%
66.3%
64.1%
60.5%
69.8%
Stock-based compensation
67.4%
66.0%
68.5%
68.2%
66.3%
64.1%
60.5%
69.8%
Non-GAAP gross margin %
67.3%
65.9%
68.4%
68.2%
66.2%
64.0%
60.4%
69.6%
GAAP operating expenses
7,876
6,953
6,383
7,718
7,701
7,634
8,056
7,501
Stock-based compensation
537
750
506
426
529
403
466
625
Non-GAAP Operating expenses
7,339
6,203
5,877
7,292
7,172
7,231
7,590
6,876
GAAP net income (Loss)
(707)
284
584
(680)
(2,034)
(1,889)
(3,153)
(2,497)
Stock-based compensation
544
762
512
433
537
410
474
638
Acquired intangible amortization
738
737
826
749
749
749
749
749
Acquired in-process research and development
159
Impairment charge on investment
90
Non-GAAP net income (loss)
575
1,783
2,081
592
(748)
(730)
(1,930)
(1,110)
THREE MONTHS ENDED
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