SP1490E Datasheet, PDF (1/10 Pages) Sipex Corporation – Full Duplex RS-485 Transceivers

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Preliminary SP1490E/SP1491E
Full Duplex RS-485 Transceivers
FEATURES
■ +5V Only
■ Low Power BiCMOS
■ Driver/Receiver Enable (SP1491E)
■ RS-485 and RS-422 Drivers/Receivers
■ Pin Compatible with SN75179
(SP1490E)
■ Pin Compatible with SN75180
(SP1491E)
■ Improved ESD Specifications
±15kV Human Body Model
±15kV IEC1000-4-2 Air Discharge
±8kV IEC1000-4-2 Contact Discharge
VCC 1
RO 2
DI 3
GND 4
8^A
SP1490E
7B
8 Pin - nSOIC
6Z
5Y
APPLICATIONS
■ Industial Networks ■ Telecom
■ Motor Control
■ HVAC/ Building Control
DESCRIPTION
The SP1490E is a low power differential line driver/receiver meeting RS-485 and RS-422
standards up to 20Mbps. The SP1491E is identical to the SP1490E with the addition of driver
and receiver tri-state enable lines. Both products feature ±200mV receiver input sensitivity,
over wide common mode range. The SP1490E is available in 8-pin plastic DIP and 8-pin
NSOIC packages for operation over the commercial and industrial temperature ranges. The
SP1491E is available in 14-pin DIP and 14-pin NSOIC packages for operation over the
commercial and industrial temperature ranges.
BLOCK DIAGRAM
Vcc 1
RO 2
R
DI 3
D
GND 4
NC 1
8A
7B
RO 2
R
REB 3
6Z
DE 4
5Y
DI 5
D
GND 6
GND 7
14 Vcc
13 NC
12 A
11 B
10 Z
9Y
8 NC
SP1490E
SP1491E
Date: 5/18/04
SP1490E/1491E Full Duplex RS-485 Transceivers
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© Copyright 2004 Sipex Corporation