HD293486 Datasheet, PDF (1/6 Pages) Hitachi Semiconductor – Quadruple Dfferential Line Receivers With 3 State Outputs

HD293486
Quadruple Dfferential Line Receivers With 3 State Outputs
The HD293486 features quadruple Differential
line receivers designed to meet the specs of EIA
RS–422A and RS–423A. This device operates
from a single 5 V power supply. When the
enable input is low the associated outputs are in a
high impedance state.
Logic Diagram
1A
1Y
1B
1,2 Output
Enable
2A
2Y
2B
3A
3Y
3B
3,4 Output
Enable
4A
4Y
4B
Pin Arrangement
1B
1A
1Y
1,2 Output
Enable
2Y
2A
2B
GND
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
(Top View)
Vcc
4B
4A
4Y
3,4 Output
Enable
3Y
3A
3B
Function Table
Differential Input
A–B
VID ≥ 0.2 V
–0.2 V < VID < 0.2 V
VID ≤ –0.2 V
X
Output Enable
H
H
H
L
Output
Y
H
?
L
Z
H : High level
L : Low level
X ^: Irrelevant
? : Indeterminate
Z : High Impedance