®
SP26LV431
High Speed, +3.3V Quad RS-422
Differential Line Driver
FEATURES
■ Quad Differential Line Drivers
■ Compatible with the EIA standard for
RS-422 serial protocol
■ High-Z Output Control
■ At Least 60Mbps Transmission Rates
■ 11ns Typical Driver Propagation Delays
■ Less than 1ns Typical Output Skew
■ Single +3.3V Supply Operation
■ Common Driver Enable Control
■ Compatibility with the industry standard
26LV31
■ Ideal For Use with SP26LV431, Quad
Receivers
DI1
D01A
D01B
ENABLE
D02B
D02A
DI2
GND
16 VCC
1
2
3
SP26LV431
4
15 DI4
14 D04A
13 D04B
12 ENABLE
5
6
11 D0 B
3
10 D0 A
3
9 DI
3
7
8
Now Available in Lead Free Packaging
DESCRIPTION
The SP26LV431 is a quad differential line driver that meets the specifications of the EIA
standard RS-422 serial protocol. The SP26LV431 features Sipex's BiCMOS process allowing
low power operational characteristics of CMOS technology while meeting all of the demands
of the RS-422 serial protocol over 60Mbps under load. The RS-422 protocol allows up to 10
receivers to be connected to a multipoint bus transmission line. The SP26LV431 features a
driver enable control common to all four drivers that places the output pins in a high impedance
state. Since the cabling can be as long as 4,000 feet, the RS-422 drivers of the SP26LV431
are equipped with a wide common-mode output voltage range to accommodate ground
potential differences.
TYPICAL APPLICATION CIRCUIT
INPUTS
VCC
DI4
ENABLE
ENABLE
Input
NonInverting
A Output
DI3
DI2
DI1
Inverting
B Output
LOW
HIGH
don't care
high-Z
high-Z
ENABLE
HIGH
don't care
LOW
LOW
HIGH
ENABLE
don't care
LOW
HIGH
HIGH
LOW
DO A DO B DO A DO B DO A DO B DO A DO B
3
4
3
2
2
1
1
4
GND
Date: 2/24/05
SP26LV431 High Speed, +3.3V Quad RS-422 Differential Line Driver
1
OUTPUTS
© Copyright 2005 Sipex Corporationn