SP1490E Datasheet, PDF (1/8 Pages) Sipex Corporation – Full Duplex RS-485 Transceivers

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
SP1490E
8A
7B
8₈ P_Pii_nn_-n_nS_SOO_II_CC
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 an 8-pin NSOIC packages for operation over the commercial and
industrial temperature ranges. The SP1491E is available in a 14-pin NSOIC packages for operation
over the commercial and industrial temperature ranges.
Vcc 1
RO 2
R
DI 3
D
GND 4
NC 1
8A
RO 2
7B
RE B 3
6Z
DE 4
5Y
DI 5
GND 6
GND 7

SP1490E
BLOCK DIAGRAM
14 Vcc
13 NC
12 A
R
11 B
10 Z
D
9Y
8 NC
SP1491E
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
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SP1490_SP1491E_100_061209