SN75ALS165
OCTAL GENERAL-PURPOSE INTERFACE BUS TRANSCEIVER
SLLS023B – JUNE 1986 – REVISED AUGUST 1989
MEETS IEEE STANDARD 488-1978 (GPIB)
DW OR N PACKAGE
(TOP VIEW)
8-Channel Bidirectional Transceiver
High-Speed Advanced Low-Power Schottky
Circuitry
TE
B1
B2
B3
B4
B5
B6
B7
B8
V
CC
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
D1
D2
D3
D4
D5
D6
Low Power Dissipation . . . 46 mW Max Per
Channel
GPIB
I/O Ports
Terminal
I/O Ports
Fast Propagation Times . . . 20 ns Max
High-Impedance PNP Inputs
13 D7
12 D8
Receiver Hysteresis . . . 650 mV Typ
No Loading of Bus When Device Is
11
GND
PE
Powered Down (V
= 0)
CC
NOT RECOMMENDED FOR NEW DESIGN
Function Tables
Power-Up/Power-Down Protection
(Glitch Free)
Driver and Receiver Can Be Disabled
Simultaneously
EACH DRIVER
EACH RECEIVER
INPUTS
TE PE
INPUTS
TE PE
OUTPUT
B
OUTPUT
D
D
B
description
H
L
H
X
H
H
X
L
H
X
L
H
L
L
H
X
X
L
L
H
X
H
H
X
L
L
H
Z
Z
†
The SN75ALS165 eight-channel general-
purpose interface bus transceiver is a monolithic,
high-speed,advancedlow-powerSchottkydevice
designed for two-way data communications over
single-ended transmission lines. It is designed to
meet the requirements of IEEE Standard
488-1978. The transceiver features driver outputs
Z
Z
†
X
H = high level,
Z = high-impedance state
This is the high-impedance state of a normal 3-state output
modified by the internal resistors to V and GND.
L = low level,
X = irrelevant,
†
CC
that can be operated in either the passive-pullup or 3-state mode. If talk enable (TE) is high, these ports have
the characteristics of passive-pullup outputs when pullup enable (PE) is low and of 3-state outputs when PE
is high. Taking TE low places these ports in the high-impedance state. Taking TE and PE low places both the
drivers and receivers in the high-impedance state. The driver outputs are designed to handle loads up to 48 mA
of sink current.
An active turn-off feature is incorporated into the bus-terminating resistors so that the device exhibits a high
impedance to the bus when V = 0. When combined with the SN75ALS161 or SN75ALS162 management bus
CC
transceiver, the pair provides the complete 16-wire interface for the IEEE 488 bus.
The SN75ALS165 is manufactured in a 20-pin package and is characterized for operation from 0°C to 70°C.
Copyright 1989, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265