SP3491CN Sipex Corporation, SP3491CN Datasheet
SP3491CN
Manufacturer Part Number
SP3491CN
Description
Manufacturer
Sipex Corporation
Specifications of SP3491CN
Date_code
04
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DESCRIPTION
The SP3490 and the SP3491 are +3.3V low power full duplex transceivers that meet the
specifications of the RS-485 and RS-422 serial protocols. These devices are pin-to-pin
compatible with the Sipex SP490 and SP491 devices as well as popular industry standards.
The SP3490 and the SP3491 feature Sipex's BiCMOS process, allowing low power operation
without sacrificing performance. The SP3490 and SP3491 meet the electrical specifications
of RS-485 and RS-422 serial protocols up to 10Mbps under load. The SP3491 is identical to
the SP3490 with the addition of driver and receiver tri-state enable lines.
Rev. 10/11/02
Full Duplex RS-485 and RS-422
Transceivers
Operates from a single +3.3V supply
Interoperable with +5.0V logic
Driver/Receiver Tri-state Enable
Lines (SP3491)
-7V to +12V Common-Mode Input
Voltage Range
+200mV Receiver Input Sensitivity
Allows up to 32 transceivers on
the serial bus
Compatibility with LTC490
and SN75179 (SP3490)
Compatibility with LTC491
and SN75180 (SP3491)
GND
Vcc
R
D
4
1
2
3
+3.3V Low Power Full Duplex RS-485
®
Transceivers with 10Mbps Data Rate
SP3490
D
R
SP3490/3491 Low Power Full-Duplex RS485 Transceivers
6
8
7
5
A
B
Z
Y
1
Now Available in Lead Free Packaging
GND
GND
REB
NC
DE
R
D
1
2
3
4
5
6
7
SP3490/SP3491
SP3491
D
R
© Copyright 2002 Sipex Corporation
14
13
12
11
10
9
8
Vcc
NC
A
B
Z
Y
NC
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