Datasheet

SN65ALS180, SN75ALS180
DIFFERENTIAL DRIVER AND RECEIVER PAIRS
SLLS052G – AUGUST 1987 – REVISED APRIL 2003
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
description/ordering information (continued)
The SN65ALS180 and SN75ALS180 combine a 3-state differential line driver and a differential input line
receiver, both of which operate from a single 5-V power supply. The driver and receiver have active-high and
active-low enables, respectively, that can be connected together externally to function as a direction control.
The driver differential outputs and the receiver differential inputs are connected to separate terminals for greater
flexibility and are designed to offer minimum loading to the bus when the driver is disabled or V
CC
= 0.
These ports feature wide positive and negative common-mode voltage ranges, making the device suitable for
party-line applications.
Function Tables
DRIVER
INPUT
ENABLE
OUTPUTS
D DE
Y Z
H H H L
L H L H
X L Z Z
RECEIVER
DIFFERENTIAL INPUTS
ENABLE OUTPUT
A–B RE R
V
ID
≥ 0.2 V L H
–0.2 V < V
ID
< 0.2 V L ?
V
ID
≤ –0.2 V L L
X H Z
Open L H
H = high level, L = low level, ? = indeterminate,
X = irrelevant, Z = high impedance (off)
logic diagram (positive logic)
4
5
9
10
DE
D
Y
Z
12
11
A
B
3
2
RE
R