SP490E Datasheet, PDF (1/12 Pages) Sipex Corporation – Enhanced Full Duplex RS-485 Transceivers

®
SP490E/SP491E
Enhanced Full Duplex RS-485 Transceivers
s +5V Only
s Low Power BiCMOS
s Driver/Receiver Enable (SP491E)
s RS-485 and RS-422 Drivers/Receivers
s Pin Compatible with LTC490 and
SN75179 (SP490E)
s Pin Compatible with LTC491 and
SN75180 (SP491E)
s Improved ESD Specifications:
±15kV Human Body Model
±15kV IEC1000-4-2 Air Discharge
±8kV IEC1000-4-2 Contact Discharge
DESCRIPTION…
The SP490E is a low power differential line driver/receiver meeting RS-485 and RS-422
standards up to 10Mbps. The SP491E is identical to the SP490E with the addition of driver
and receiver tri-state enable lines. Both products feature ±200mV receiver input sensitivity,
over wide common mode range. The SP490E is available in 8-pin plastic DIP and 8-pin NSOIC
packages for operation over the commercial and industrial temperature ranges. The SP491E
is available in 14-pin DIP and 14-pin NSOIC packages for operation over the commercial and
industrial temperature ranges.
Vcc 1
8A
R2
R
7B
6Z
D3
D
5Y
GND 4
SP490E
NC 1
R2
R
REB 3
DE 4
D5
D
GND 6
GND 7
14 Vcc
13 NC
12 A
11 B
10 Z
9Y
8 NC
SP491E
SP490EDS/14
SP490E Enhanced Full Duplex RS-485 Transceivers
1
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