SN74AHCT139PW - Texas Instruments

SN74AHCT139PW DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS

ordering information The ’AHCT139 devices are dual 2-line to 4-line decoders/demultiplexers designed for 4.5-V to 5.5-V VCC operation. These devices are designed to be used in high-performance memory-decoding or data-routing applications requiring very short propagation delay times. In high-performance memory systems, these decoders can be used to minimize t.

Features

y are less than the typical access time of the memory. This means that the effective system delay introduced by the decoders is negligible. SCLS267M
  – DECEMBER 1995
  – REVISED MARCH 2003 SN54AHCT139 . . . J OR W PACKAGE SN74AHCT139 . . . D, DB, DGV, N, NS, OR PW PACKAGE (TOP VIEW) 1G 1 1A 2 1B 3 1Y0 4 1Y1 5 1Y2 6 1Y3 7 GND 8 16 VCC 15 2G 14 2A 13 2B 12 2Y0 11 2Y1 10 2Y2 9 2Y3 SN54AHCT139 . . . FK PACKAGE (TOP VIEW) 2G VCC NC 1G 1A 1B 3 2 1 20 19 4 18 2A 1Y0 5 17 2B NC 6 16 NC 1Y1 7 15 2Y0 1Y2 8 14 2Y1 9 10 11 12 13 2Y2 2Y3 NC GND 1Y3 NC
  – No internal connection ORD.