SP490ES [EXAR]
Full Duplex RS-485 Transceivers; 全双工RS- 485收发器
| 型号： | SP490ES |
| 厂家： | 
EXAR CORPORATION |
| 描述： | Full Duplex RS-485 Transceivers |
| 文件： | 总12页 (文件大小：534K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SP490ꢀandꢀSP491
FullꢀDuplexꢀRS-485ꢀTransceivers
FEATURES
• +5V Only
• Low Power BiCMOS
• Driver/Receiver Enable (SP49ꢀ)
• RS-485 and RS-422 Drivers/Receivers
• Pin Compatible with LTC490 and
SN75ꢀ79 (SP490)
• Pin Compatible with LTC49ꢀ and
SN75ꢀ80 (SP49ꢀ)
Now Available in Lead Free Packaging
DESCRIPTION
The SP490 is a low power differential line driver/receiver meeting RS-485 and RS-422
standards up to 5Mbps. The SP491 is identical to the SP490 with the addition of driver and
receiver tri-state enable lines. Both products feature ±200mV receiver input sensitivity, over
wide common mode range. The SP490 is available in 8-pin plastic DIP and 8-pin NSOIC
packages for operation over the commercial and industrial temperature ranges. The SP491
is available in ꢀ4-pin DIP and ꢀ4-pin NSOIC packages for operation over the commercial
and industrial temperature ranges.
BLOCKꢀDIAGRAMS
ꢀ
ꢀ
ꢀ
SP490ꢀ
ꢀ
ꢀ
ꢀ
SP491
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490,49ꢀ_ꢀ00_07ꢀ408
ABSOLUTEꢀMAXIMUMꢀRATINGS
These are stress ratings only and functional operation of the device at
theseratingsoranyotherabovethoseindicatedintheoperationsections
ofthespecificationsbelowisnotimplied. Exposuretoabsolutemaximum
rating conditions for extended periods of time may affect reliability.
VCC....................................................................................................+7V
Input Voltages
Drivers................................................-0.5V to (VCC+0.5V)
Receivers..................................................................±ꢀ4V
Output Voltages
Drivers......................................................................±ꢀ4V
Receivers...........................................-0.5V to (VCC+0.5V)
Storage Temperature....................................................-65˚C to +150˚
Power Dissipation.....................................................................ꢀ000mW
ELECTRICALꢀCHARACTERISTICSꢀ
TMINꢀtoꢀTMAXꢀꢀandꢀVCCꢀ=ꢀ5Vꢀ±ꢀ5%ꢀunlessꢀotherwiseꢀnoted.
PARAMETERSꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀMIN.ꢀꢀꢀꢀꢀꢀꢀTYP.ꢀꢀꢀꢀꢀꢀꢀMAX.ꢀꢀꢀꢀUNITSꢀ ꢀꢀꢀCONDITIONS
ꢀꢀꢀꢀꢀSP490ꢀDRIVER
DCꢀCharacteristics
Differential Output Voltage
Differential Output Voltage
GND
2
VCC
VCC
Volts
Volts
Unloaded; R = ∞ ; see figure 1
With Load; R = 50Ω; (RS422);
see figure 1
Differential Output Voltage
ꢀ.5
2.0
VCC
Volts
With Load;R = 27Ω; (RS485); see
figure 1
Change in Magnitude of Driver
Differential Output Voltage for
Complimentary States
Driver Common-Mode
Output Voltage
Input High Voltage
Input Low Voltage
Input Current
0.2
3
Volts
R = 27Ω or R = 50Ω; see figure 1
Volts
Volts
Volts
µA
R = 27Ω or R = 50Ω; see figure 1
Applies to D
Applies to D
0.8
±ꢀ0
Applies to D
Driver Short-Circuit Current
VOUT = HIGH
VOUT = LOW
35
35
250
250
mA
mA
-7V ≤ V ≤ +12V
-7V ≤ VOO ≤ +12V
SP490ꢀDRIVER
ꢀꢀꢀꢀꢀACꢀCharacteristicsꢀ
Maximum Data Rate
Driver Input to Output
5
Mbps
ns
30
30
5
60
60
tPLH; RDIFF = 54Ω, CLꢀ = CL2 = ꢀ00pF;
see figures 3 and 6
tPHL; RDIFF = 54Ω, CLꢀ = CL2 = ꢀ00pF;
see figures 3 and 6
Driver Input to Output
Driver Skew
ns
ns
ns
see figures 3 and 6,
tSKEW = | tDPLH - tDPHL
|
Driver Rise or Fall Time
ꢀ5
40
From ꢀ0% to 90%; RDIFF = 54Ω,
CLꢀ = CL2 = ꢀ00pF; see figures 3 and 6
ꢀꢀꢀꢀꢀSP490ꢀRECEIVERꢀ
DCꢀCharacteristics
Differential Input Threshold
Input Hysteresis
Output Voltage High
Output Voltage Low
Input Resistance
Input Current (A, B); VIN = ꢀ2V
Input Current (A, B); VIN = -7V
Short-Circuit Current
0.2
3.5
12
+0.2 Volts
mV
-7V ≤ VCM ≤ 12V
VCM = 0V
I = -4mA, VID = +200mV
IO = +4mA, VID = -200mV
-O7V ≤ VCM ≤ 12V
VIN = ꢀ2V
70
Volts
0.4
Volts
15
kΩ
±ꢀ.0 mA
-0.8
mA
VIN = -7V
0V ≤ VO ≤ VCC
85
mA
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490,49ꢀ_ꢀ00_07ꢀ408
2
ELECTRICALꢀCHARACTERISTICSꢀ
TMINꢀtoꢀTMAXꢀꢀandꢀVCCꢀ=ꢀ5Vꢀ±ꢀ5%ꢀunlessꢀotherwiseꢀnoted.
PARAMETERSꢀ
MIN.ꢀ
TYP.ꢀ
MAX.ꢀ UNITSꢀ CONDITIONSꢀ
SP490ꢀRECEIVER
ACꢀCharacteristics
Maximum Data Rate
Receiver Input to Output
5
Mbps
ns
90
90
ꢀ3
ꢀ50
ꢀ50
t
C
t
; R
= 54Ω,
PLH = CDILF2F=ꢀ00pF; Figures 3 & 8
Receiver Input to Output
ns
ns
Lꢀ; RDIFF = 54Ω,
CPHLꢀL = CL2 = ꢀ00pF; Figures 3 & 8
RDIFF = 54Ω; CLꢀ = CL2 = ꢀ00pF;
Figures 3 & 8
Diff. Receiver Skew ItPLH-tPHL
I
POWERꢀREQUIREMENTS
Supply Voltage
Supply Current
+4.75
+5.25 Volts
µA
900
ENVIRONMENTALꢀANDꢀ
MECHANICAL
Operating Temperature
Commercial (C_)
Industrial (E_)
Storage Temperature
Package
0
-40
-65
+70
+85
+ꢀ50 °C
°C
°C
Plastic DIP (_S)
NSOIC (_N)
Figure ꢀ. Driver DC Test Load Circuit
Figure 2. Receiver Timing Test Load Circuit
Figure 3. Driver/Receiver Timing Test Circuit
Figure 4. Driver Timing Test Load #2 Circuit
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490,49ꢀ_ꢀ00_07ꢀ408
3
Figure 6. Driver Propagation Delays
Figure 7. Driver Enable and Disable Times
Figure 8. Receiver Propagation Delays
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490,49ꢀ_ꢀ00_07ꢀ408
4
ABSOLUTEꢀMAXIMUMꢀRATINGS
Theseꢀareꢀstressꢀratingsꢀonlyꢀandꢀfunctionalꢀoperationꢀofꢀtheꢀdeviceꢀ
atꢀtheseꢀratingsꢀorꢀanyꢀotherꢀaboveꢀthoseꢀindicatedꢀinꢀtheꢀoperationꢀ
sections of the specifications below is not implied. Exposure to
absolute maximum rating conditions for extended periods of time
may affect reliability.
VCC...................................................................................................+7V
InputꢀVoltages
ꢀ
ꢀ
ꢀ
Logic.................................................-0.5Vꢀtoꢀ(VCC+0.5V)
Drivers..............................................-0.5Vꢀtoꢀ(VCC+0.5V)
Receivers................................................................±14V
OutputꢀVoltages
ꢀ
ꢀ
ꢀ
Logic................................................-0.5Vꢀtoꢀ(VCC+0.5V)
Drivers....................................................................±14V
Receivers.........................................-0.5Vꢀtoꢀ(VCC+0.5V)
Storage Temperature.....................................................-65˚C to +150
Power Dissipation.................................................................1000mW
ELECTRICALꢀCHARACTERISTICSꢀ
TMIN to TMAX and VCC = 5V ± 5% unless otherwise noted.
PARAMETERSꢀ
SP491ꢀDRIVER
MIN.ꢀ
TYP.ꢀ
MAX.ꢀ UNITSꢀ CONDITIONSꢀ
DCꢀCharacteristics
Differential Output Voltage
Differential Output Voltage
GND
2
VCC
VCC
Volts
Volts
Unloaded; R = ∞ ; see figure 1
With Load; R = 50Ω; (RS422);
see figure 1
Differential Output Voltage
figure 1
ꢀ.5
VCC
Volts
With Load; R = 27Ω; (RS485); see
Change in Magnitude of Driver
Differential Output Voltage for
Complimentary States
Driver Common-Mode
Output Voltage
Input High Voltage
Input Low Voltage
Input Current
0.2
3
Volts
R = 27Ω or R = 50Ω; see figure 1
Volts
Volts
Volts
µA
R = 27Ω or R = 50Ω; see figure 1
Applies to D, REB, DE
Applies to D, REB, DE
2.0
0.8
±ꢀ0
Applies to D, REB, DE
Driver Short-Circuit Current
VOUT = HIGH
VOUT = LOW
35
35
250
250
mA
mA
-7V ≤ V ≤ 12V
-7V ≤ VOO ≤ 12V
SP491ꢀDRIVER
ACꢀCharacteristics
Maximum Data Rate
Driver Input to Output
5
20
Mbps
ns
REB = 5V, DE = 5V
tPLH; RDIFF = 54Ω, CLꢀ = CL2 = ꢀ00pF;
see figures 3 and 6
tPHL; RDIFF = 54Ω, CLꢀ = CL2 = ꢀ00pF;
see figures 3 and 6
see figures 3 and 6,
30
30
5
60
60
ꢀ0
40
70
70
70
70
Driver Input to Output
20
3
ns
ns
ns
ns
ns
ns
ns
Driver Skew
tSKEW = | tDPLH - tDPHL
|
Driver Rise or Fall Time
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable Time from Low
Driver Disable Time from High
ꢀ5
40
40
40
40
From ꢀ0% to 90%; RDIFF = 54Ω,
CLꢀ = CL2 = ꢀ00pF; see figures 3 and 6
C
= CL2 = ꢀ00pF; see figures
4Laꢀnd 7; S2 closed
= CL2 = ꢀ00pF; see figures
4Laꢀnd 7; Sꢀ closed
= CL2 = ꢀ00pF; see figures
4Laꢀnd 7; Sꢀ closed
= CL2 = ꢀ00pF; see figures
4Laꢀnd 7; S2 closed
C
C
C
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490,49ꢀ_ꢀ00_07ꢀ408
5
ELECTRICALꢀCHARACTERISTICSꢀ
TMINꢀtoꢀTMAXꢀꢀandꢀVCCꢀ=ꢀ5Vꢀ±ꢀ5%ꢀunlessꢀotherwiseꢀnoted.
PARAMETERSꢀ
MIN.ꢀ
TYP.ꢀ
MAX.ꢀ UNITSꢀ CONDITIONSꢀ
SP491ꢀRECEIVER
DCꢀCharacteristics
Differential Input Threshold
Input Hysteresis
-0.2
+0.2 Volts
mV
-7V ≤ VCM ≤ 12V
VCM = 0V
70
Output Voltage High
Output Voltage Low
Three State (high impedance)
Output Current
3.5
Volts
Volts
I = -4mA, VID = +200mV
0.4
IOO = +4mA, VID = -200mV
±1
µA
kΩ
±ꢀ.0 mA
0.4V ≤ V ≤ 2.4V; REB = 5V
-7V ≤ VCMO ≤ 12V
DE = 0V, VCC = 0V or 5.25V, VIN = ꢀ2V
DE = 0V, VCC = 0V or 5.25V, VIN = -7V
0V ≤ VO ≤ VCC
Input Resistance
12
7
15
Input Current (A, B); VIN = ꢀ2V
Input Current (A, B); VIN = -7V
Short-Circuit Current
-0.8
85
mA
mA
SP491ꢀRECEIVER
ACꢀCharacteristics
Maximum Data Rate
Receiver Input to Output
5
60
Mbps
ns
REB = 0V
90
90
ꢀ3
ꢀ50
ꢀ50
t
C
t
; R
= 54Ω,
PLH = CDILF2F=ꢀ00pF; Figures 3 & 8
Receiver Input to Output
60
ns
ns
Lꢀ; RDIFF = 54Ω,
CPHLꢀL = CL2 = ꢀ00pF; Figures 3 & 8
RDIFF = 54Ω; CLꢀ = CL2 = ꢀ00pF;
Figures 3 & 8
Diff. Receiver Skew ItPLH-tPHL
I
Receiver Enable to Output Low
Receiver Enable to Output High
Receiver Disable from Low
Receiver Disable from High
20
20
20
20
50
50
50
50
ns
ns
ns
ns
CRL = ꢀ5pF; Figures 2 and 9; S closed
CRL = ꢀ5pF; Figures 2 and 9; Sꢀ closed
CRL = ꢀ5pF; Figures 2 and 9; S2 closed
CRL = ꢀ5pF; Figures 2 and 9; S2ꢀ closed
POWERꢀREQUIREMENTS
Supply Voltage
+4.75
+5.25 Volts
µA
Supply Current
600
REB, D = 0V or VCC; DE = VCC
SP491ꢀENVIRONMENTAL
ANDꢀMECHANICAL
Operating Temperature
Commercial (C_)
Industrial (E_)
0
-40
-65
+70
+85
+ꢀ50 °C
°C
°C
Storage Temperature
Package
Plastic DIP (_S)
NSOIC (_N)
Figure 9. Receiver Enable and Disable Times
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490,49ꢀ_ꢀ00_07ꢀ408
6
DESCRIPTION
The driver of the SP491 has a driver enable
control line which is active high. Alogic high
on DE (pin 4) of the SP491 will enable
the differential driver outputs. A logic low
on DE (pin 4) of the SP491 will tri-state the
driver outputs. The SP490 does not have a
driver enable.
TheSP490andSP491arefull-duplexdifferen-
tialtransceiversthatmeettherequirementsof
RS-485 and RS-422. Fabricated with a
Sipex proprietary BiCMOS process, both
products require a fraction of the power of
older bipolar designs.
The RS-485 standard is ideal for multi-drop
applications or for long-distance interfaces.
RS-485 allows up to 32 drivers and 32
receivers to be connected to a data bus,
making it an ideal choice for multi-drop
applications. Since the cabling can be as
long as 4,000 feet, RS-485 transceivers are
equipped with a wide (-7V to +ꢀ2V) com-
mon mode range to accommodate ground
potential differences. Because RS-485
is a differential interface, data is virtually
immune to noise in the transmission line.
Receiver...
ThereceiversforboththeSP490andSP491
havedifferentialinputswithaninputsensitiv-
ityaslowas±200mV.Inputimpedanceofthe
receiversistypically15kΩ(12kΩminimum).
Awide common mode range of -7V to +ꢀ2V
allows for large ground potential differences
betweensystems.Thereceiversforboththe
SP490 and SP491 are equipped with the
fail-safe feature. Fail-safe guarantees that
the receiver output will be in a high state
when the input is left unconnected.
Driver...
The receiver of the SP491 has a receiver
enablecontrollinewhichisactivelow.Alogic
low on REB (pin 3) of the SP491 will enable
the differential receiver.Alogic high on REB
(pin 3) of the SP491 will tri-state the re-
ceiver.
The drivers for both the SP490 and SP491
havedifferentialoutputs.Thetypicalvoltage
output swing with no load will be 0 volts to
+5 volts. With worst case loading of 54Ω
acrossthedifferentialoutputs,thedrivercan
maintain greater than ꢀ.5V voltage levels.
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490,49ꢀ_ꢀ00_07ꢀ408
7
PACKAGE:ꢀ8ꢀPINꢀNSOIC
D
Ø
e
E/2
L2
E1
E1/2
E
Ø
Seating Plane
Ø1
L
L1
Gauge Plane
VIEW C
1
b
INDEX AREA
(D/2 X E1/2)
T OP VIEW
A1
A
Seating Plane
A2
SIDE VIEW
8 Pin NSOIC JEDEC MO-012 (AA) Variation
SYMBOL
MIN
1.35
0.1
1.25
0.31
0.17
NOM
-
-
-
-
-
MAX
1.75
0.25
1.65
0.51
0.24
A
A1
A2
b
B
B
SEE VIEW C
c
D
E
E1
e
L
4.90 BSC
6.00 BSC
3.90 BSC
1.27 BSC
-
0.4
1.27
b
L1
L2
ø
1.04 REF
0.25 BSC
-
0º
5º
8º
15º
ø1
-
c
Note: Dimensions in (mm)
BASE MET AL
SECTION B-B
WITH PLA TING
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490,49ꢀ_ꢀ00_07ꢀ408
8
PACKAGE:ꢀ14ꢀPINꢀNSOIC
D
Ø
e
E/2
L2
E1
Ø
E
Seating Plane
Ø1
L
E1/2
L1
Gauge Plane
VIEW C
1
b
INDEX AREA
(D/2 X E1/2)
TOP VIEW
A1
A
Seating Plane
A2
SIDE VIEW
14 Pin NSOIC JEDEC MO-012 (AB) Variation
MIN
NOM
MAX
SYMBOL
A
A1
A2
b
1.35
0.1
1.25
0.31
0.17
-
-
-
-
1.75
0.25
1.65
0.51
0.25
B
B
c
-
SEE VIEW C
D
E
E1
e
L
8.65 BSC
6.00 BSC
3.90 BSC
1.27 BSC
-
0.4
1.27
L1
L2
ø
1.04 REF
0.25 BSC
-
b
0º
5º
8º
15º
ø1
-
c
Note: Dimensions in (mm)
BASE MET AL
SECTION B-B
WITH PLA TING
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490,49ꢀ_ꢀ00_07ꢀ408
9
PACKAGE:ꢀ8ꢀPINꢀPDIP
N
E
INDEX
AREA
E
E1
2
3
N/2
1
c
eA
A1
eB
D
A
e
A2
D1
L
b
b2
b3
b
c
8 PIN PDIP JEDEC MS-001 (BA) Variation
SYMBOL
MIN
NOM
MAX
A
A1
A2
b
b2
b3
c
D
D1
E
E1
e
-
-
-
0.21
-
0.15
0.115
0.014
0.045
0.3
0.008
0.355
0.005
0.3
0.13
0.018
0.06
0.039
0.01
0.365
-
0.31
0.25
.100 BSC
.300 BSC
-
0.195
0.022
0.07
0.045
0.014
0.4
-
0.325
0.28
0.24
eA
eB
L
-
0.43
0.15
0.115
0.13
Note: Dimensions in (mm)
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490,49ꢀ_ꢀ00_07ꢀ408
ꢀ0
PACKAGE:ꢀ14ꢀPINꢀPDIP
N
1
E
INDEX
AREA
E
E1
2
3
N/2
c
eA
eB
A1
D
A
e
A2
D1
L
b3
b2
b
14 PIN PDIP JEDEC MS-001 (AA) Variation
SYMBOL
MIN
NOM
MAX
A
A1
A2
b
b2
b3
c
D
D1
E
E1
e
-
-
-
0.21
-
0.15
0.115
0.014
0.045
0.3
0.008
0.735
0.005
0.3
0.13
0.018
0.06
0.039
0.01
0.75
-
0.31
0.25
.100 BSC
.300 BSC
-
0.195
0.022
0.07
0.045
0.014
0.755
-
b
c
0.325
0.28
0.24
eA
eB
L
-
0.43
0.15
0.115
0.13
Note: Dimensions in (mm)
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490,49ꢀ_ꢀ00_07ꢀ408
ꢀꢀ
ORDERINGꢀINFORMATION
Model
Temperature Range
Package
SP490CN. ......................................................................................0˚C to +70˚C ............................................................................... 8-Pin NSOIC
SP490CN/TR .................................................................................0˚C to +70˚C ............................................................................... 8-Pin NSOIC
SP490CS .......................................................................................0˚C to +70˚C .................................................................................8-Pin PDIP
SP490EN ..................................................................................... -40˚C to +85˚C.............................................................................. 8-Pin NSOIC
SP490EN/TR................................................................................ -40˚C to +85˚C.............................................................................. 8-Pin NSOIC
SP490ES...................................................................................... -40˚C to +85˚C................................................................................8-Pin PDIP
SP49ꢀCN .......................................................................................0˚C to +70˚C .............................................................................. ꢀ4-Pin NSOIC
SP49ꢀCN/TR .................................................................................0˚C to +70˚C .............................................................................. ꢀ4-Pin NSOIC
SP49ꢀCS .......................................................................................0˚C to +70˚C ................................................................................ꢀ4-Pin PDIP
SP49ꢀEN ..................................................................................... -40˚C to +85˚C............................................................................. ꢀ4-Pin NSOIC
SP49ꢀEN/TR................................................................................ -40˚C to +85˚C............................................................................. ꢀ4-Pin NSOIC
SP49ꢀES...................................................................................... -40˚C to +85˚C...............................................................................ꢀ4-Pin PDIP
Available in lead free packaging. To order add "-L" suffix to part number.
Example: SP49ꢀCN/TR = standard; SP49ꢀCN-L/TR = lead free
/TR = Tape and Reel
Pack quantity is 2500 for NSOIC.
REVISION HISTORY
Date
Revision Description
02/24/05
07/ꢀ4/08
-
Sipex Legacy Data Sheet
Convert to Exar format.
ꢀ.0.0
Notice
EXAR Corporation reserves the right to make changes to any products contained in this publication in order to improve design, performance or reliabil-
ity. EXAR Corporation assumes no representation that the circuits are free of patent infringement. Charts and schedules contained herein are only for
illustration purposes and may vary depending upon a user's specific application. While the information in this publication has been carefully checked;
no responsibility, however, is assumed for inaccuracies.
EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can
reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for
use in such applications unless EXAR Corporation receives, in writting, assurances to its satisfaction that: (a) the risk of injury or damage has been
minimized ; (b) the user assumes all such risks; (c) potential liability of EXAR Corporation is adequately protected under the circumstances.
Copyright 2008 EXAR Corporation
Datasheet June 2008
Send your Interface technical inquiry with technical details to: uarttechsupport@exar.com
Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited.
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (5ꢀ0)668-70ꢀ7 • www.exar.com
SP490,49ꢀ_ꢀ00_07ꢀ408
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