SN74ALS137A - Texas Instruments

SN74ALS137A 3-Line To 8-Line Decoders/Demultiplexers

The SN54ALS137A, SN74ALS137A, and SN74AS137 are 3-line to 8-line decoders/ demultiplexers with latches on the three address inputs. When the latch-enable (LE) input is low, the devices act as decoders/demultiplexers. When LE goes from low to high, the address present at the select (A, B, and C) inputs is stored in the latches. Further address changes are ign.

Features

for implementing glitch-free decoders in strobed (stored-address) applications in bus-oriented systems. Y7 GND SN54ALS137A . . . J PACKAGE SN74ALS137A, SN74AS137 . . . D OR N PACKAGE (TOP VIEW) A1 B2 C3 LE 4 G2 5 G1 6 Y7 7 GND 8 16 VCC 15 Y0 14 Y1 13 Y2 12 Y3 11 Y4 10 Y5 9 Y6 SN54ALS137A . . . FK PACKAGE (TOP VIEW) Y0 VCC NC A B 3 2 1 20 19 C4 18 Y1 LE 5 17 Y2 NC 6 16 NC G2 7 15 Y3 G1 8 14 Y4 9 10 11 12 13 NC Y6 Y5 The SN54ALS137A is characterized for operation over the full military temperature range of − 55°C to 125°C. The SN74ALS137A and SN74AS137 are characterize.