74HC138 Datasheet – 3-to-8 Line Decoder/Demultiplexer

Part Number : 74HC138

Description : 3-to-8 line decoder/demultiplexer inverting

Package : DIP, SMD 16 Pin

Manufactures : Philips

Image

74hc138-decoder
Description

The 74HC138 / 74HCT138 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A. The 74HC138 / 74HCT138 decoders accept three binary weighted address inputs (A0, A1, A2) and when enabled, provide 8 mutually exclusive active LOW outputs (Y0 to Y7).

Pinout

74hc138-arduino-functional-diagram

Features

1. Demultiplexing capability
2. Multiple input enable for easy expansion
3. Ideal for memory chip select decoding
4. Active LOW mutually exclusive outputs
5. Output capability: standard
6. ICC category: MSI

Functional Diagram74hc138-datasheet-pinout

 

Reference site

  1. https://learn.adafruit.com/delorean-time-circuit/circuit-trickery

74HC138 Datasheet

 

HC4053 Datasheet – Multiplexers/Demultiplexers – Hitachi

Part Number : HC4053, HD74HC4053

Description : Triple 2-channel Analog Multiplexers/Demultiplexers

Manufactures : Hitachi Semiconductor

Pinouts :
HC4053 pinout

HD74HC4053: This device contains 6 switches whose outputs are connected together in pairs, thus
implementing a triple 2 channel multiplexer, or the equivalent of 3 single-pole-double throw configuration.
Each of the A, B, or C select lines independently controls one pair of switches, selecting one of the two
switches to be “on”.

Features

•  High Speed Operation
•  Wide Operating Voltage
•  Low Quiescent Supply Current

Block Diagram

HC4053 block diagram

HC4053 Datasheet