SP489CS Exar Corporation, SP489CS Datasheet

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SP489CS

Manufacturer Part Number
SP489CS
Description
Manufacturer
Exar Corporation
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SP489CS
Manufacturer:
EXAR
Quantity:
6
Part Number:
SP489CS
Quantity:
10
DESCRIPTION…
The SP488 and SP489 are low–power quad differential line receivers meeting RS-485 and RS-422
standards. The SP488 features a common receiver enable control; the SP489 provides independent
receiver enable controls for each pair of receivers. Both feature tri–state outputs and wide common–
mode input range. The receivers have a fail–safe feature which forces a logic “1” output when receiver
inputs are left floating. Both are available in 16–pin plastic DIP and SOIC packages.
SP488/489
GND
RI
RI
RI
RI
RO
RO
EN
1
1
2
2
B
A
A
B
1
2
RS-485 or RS-422 Applications
Quad Differential Line Receivers
Tri–state Output Control
120ns Typical Receiver Propagation
Delays
–7V to +12V Common Mode Input
Range
1mA Supply Current
Single +5V Supply Operation
Pin Compatible with SN75173,
SN75175, LTC488 and LTC489
1
2
3
4
5
6
7
8
1
2
®
Quad RS-485/RS-422 Line Receivers
SP488
3
4
16
15
14
13
12
11
10
9
Quad RS-485/RS-422 Line Receivers
V
RI
RI
RO
EN
RO
RI
RI
CC
4
4
3
3
B
A
A
B
4
3
EN
1
1
GND
RI
RI
/EN
RI
RI
RO
RO
Now available in Lead Free
1
1
2
2
B
A
A
B
1
2
2
1
2
3
4
5
6
7
8
1
2
© Copyright 2000 Sipex Corporation
SP488/489
SP489
3
4
16
15
14
13
12
11
10
9
V
RI
RI
RO
EN
RO
RI
RI
CC
4
4
3
3
B
A
3
A
B
4
3
/EN
4

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SP489CS Summary of contents

Page 1

Quad RS-485/RS-422 Line Receivers RS-485 or RS-422 Applications Quad Differential Line Receivers Tri–state Output Control 120ns Typical Receiver Propagation Delays –7V to +12V Common Mode Input Range 1mA Supply Current Single +5V Supply Operation Pin Compatible with SN75173, SN75175, ...

Page 2

ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for ...

Page 3

EN A DRIVER RCVR 100pF 1/4 SP486 1/4 SP488 Figure 1. Timing Test Circuit SP488 PINOUT Pin 1 — — Receiver 1 input B. 1 Pin 2 — Receiver 1 input A. ...

Page 4

Pin 13 — RO — Receiver 4 Output — Receiver 4 output is enabled 200mV, Receiver 4 output is high. If Receiver 4 output is enabled, and 200mV, Receiver 4 output is low. ...

Page 5

AC PARAMETERS 5%; typicals +70 C unless otherwise noted PARAMETER MIN. PROPAGATION DELAY Receiver Input to Output Low to HIGH (tPLH) High to LOW (tPH ) L Differential Receiver ...

Page 6

... SP488ES .................. Common; active Low and Active High .. – +85 C ................ 16–pin Plastic DIP SP488ET .................. Common; active Low and Active High .. – +85 C ......................... 16–pin SOIC SP489CS .................. One per driver pair; active High ............ +70 C .................... 16–pin Plastic DIP SP489CT .................. One per driver pair; active High ............ +70 C ............................. 16–pin SOIC SP489ES .................. One per driver pair ...

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