SN55ALS161 Datasheet, PDF (1/16 Pages) Texas Instruments – OCTAL GENERAL-PURPOSE INTERFACE BUS TRANSCEIVERS

SN55ALS161, SN75ALS161
OCTAL GENERAL-PURPOSE INTERFACE BUS TRANSCEIVERS
SLLS019E – JUNE 1986 – REVISED NOVEMBER 1999
SUITABLE FOR IEEE STANDARD 488-1978 (GPIB)^†
D 8-Channel Bidirectional Transceivers
D Designed to Implement Control Bus
Interface
SN55ALS161 . . . J OR W PACKAGE
SN75ALS161 . . . DW OR N PACKAGE
(TOP VIEW)
D Designed for Single Controller
D High-Speed Advanced Low-Power Schottky
Circuitry
D Low Power Dissipation:
SN55ALS161 . . . 59 mW Max Per Channel
SN75ALS161 . . . 46 mW Max Per Channel
D Fast Propagation Times:
GPIB
I/O Ports
TE ₁
REN 2
IFC 3
NDAC 4
NRFD 5
DAV 6
EOI 7
20 ^V_CC
19 REN
18 IFC
17 NDAC
16 NRFD
15 DAV
14 EOI
Terminal
I/O Ports
SN55ALS161 . . . 25 ns Max
ATN 8
13 ATN
SN75ALS161 . . . 20 ns Max
D High-Impedance pnp Inputs
SRQ 9
GND 10
12 SRQ
11 DC
D Receiver Hysteresis:
SN55ALS161 . . . 550 mV Typ
SN75ALS161 . . . 650 mV Typ
SN55ALS161 . . . FK PACKAGE
(TOP VIEW)
D Bus-Terminating Resistors Provided on
Driver Outputs
D No Loading of Bus When Device Is
Powered Down (V_CC = 0)
D Power-Up/Power-Down Protection
(Glitch Free)
NDAC
NRFD
DAV
EOI
3 2 1 20 19
4
18
5
17
6
16
7
15
IFC
NDAC
NRFD
DAV
description
ATN 8
14 EOI
9 10 11 12 13
The SN55ALS161 and SN75ALS161
eight-channel general-purpose interface bus
transceivers are high-speed, advanced
low-power Schottky-process devices designed to
provide the bus-management and data-transfer
signals between operating units of a
single-controller instrumentation system. When
combined with the SN55ALS160 and
SN75ALS160 octal bus transceivers, these
devices provide a complete 16-wire interface for
the IEEE 488 bus.
The SN55ALS161 and SN75ALS161 devices
feature eight driver-receiver pairs connected in a
front-to-back configuration to form input/output
(I/O) ports at both the bus and terminal sides. The
direction of data through these driver-receiver
pairs is determined by the direction-control (DC)
and talk-enable (TE) signals.
CHANNEL-IDENTIFICATION TABLE
NAME
IDENTITY
CLASS
DC
TE
ATN
SRQ
REN
IFC
EOI
DAV
NDAC
NRFD
Direction Control
Talk Enable
Attention
Service Request
Remote Enable
Interface Clear
End or Identify
Data Valid
Not Data Accepted
Not Ready for Data
Control
Bus
Management
Data
Transfer
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
† _{The transceivers are suitable for IEEE Standard 488 applications to the extent of the operating conditions and characteristics specified in this}
data sheet. Certain limits contained in the IEEE specification are not met or cannot be tested over the entire military temperature range.
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.
Copyright © 1999, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
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