SN74ALS156 Datasheet, PDF (1/7 Pages) Texas Instruments – DECODER/DEMULTIPLEXER WITH OPEN-COLLECTOR OUTPUTS

D Applications:
– Dual 2-Line to 4-Line Decoder
– Dual 1-Line to 4-Line Demultiplexer
– 3-Line to 8-Line Decoder
– 1-Line to 8-Line Demultiplexer
D Individual Strobes Simplify Cascading for
Decoding or Demultiplexing Larger Words
D Package Options Include Plastic
Small-Outline (D) Packages and Standard
Plastic (N) 300-mil DIPs
description
SN74ALS156
DECODER/DEMULTIPLEXER
WITH OPEN-COLLECTOR OUTPUTS
SDAS099C – JUNE 1986 – REVISED MAY 1996
D OR N PACKAGE
(TOP VIEW)
1C 1
1G 2
B3
1Y3 4
1Y2 5
1Y1 6
1Y0 7
GND 8
16 V_CC
15 2C
14 2G
13 A
12 2Y3
11 2Y2
10 2Y1
9 2Y0
One of the main applications of the SN74ALS156 is as a dual 1-line to 4-line decoder /demultiplexer with
individual strobes (G) and common binary-address inputs in a single 16-pin package. When both sections are
enabled, the common binary-address inputs sequentially select and route associated input data to the
appropriate output of each section. The individual strobes permit enabling or disabling each of the 4-bit sections,
as desired.
Data applied to input 1C is inverted at its outputs and data applied at input 2C is not inverted through its outputs.
The inverter following the 1C data input permits use of the SN74ALS156 as a 3-line to 8-line demultiplexer
without external gating. All inputs are clamped with high-performance Schottky diodes to suppress line ringing
and simplify system design.
The SN74ALS156 is characterized for operation from 0°C to 70°C.
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.
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.
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Copyright © 1996, Texas Instruments Incorporated
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