HD74HCT138 Datasheet 3-to-8-line Decoder/demultiplexer

Manufacturer: Hitachi Semiconductor (now Renesas)

Overview: HD74HCT138 3-to-8-line Decoder/Demultiplexer.

Datasheet Details

Part number	HD74HCT138
Manufacturer	Hitachi Semiconductor (now Renesas)
File Size	47.91 KB
Description	3-to-8-line Decoder/Demultiplexer
Datasheet	HD74HCT138_HitachiSemiconductor.pdf

The HD74HCT138 has 3 binary select inputs (A, B, and C).

If the device is enabled these inputs determine which one of the eight normally high outputs will go low.

Two active low and one active high enables (G1, G2A and G2B) are provided to ease the cascading of decoders.

LSTTL Output Logic Level Compatibility as well as CMOS Output Compatibility High Speed Operation: tpd (A, B, C to Y) = 18.5 ns typ (CL = 50 pF) High Output Current: Fanout of 10 LSTTL Loads Wide Operating Voltage: VCC = 4.5 to 5.5 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) HD74HCT138 Function Table Inputs Enable G1 X X L H H H H H H H H G2A X H X L L L L L L L L G2B H X X L L L L L L.

Part Number	Description
HD74HCT137	3-to-8-line Decoder/Demultiplexer with Address Latch
HD74HCT125	Quad. Bus Buffer Gates (with 3-state outputs)
HD74HCT126	Quad. Bus Buffer Gates (with 3-state outputs)
HD74HCT1G04	High speed CMOS inverter using silicon gate CMOS process
HD74HCT00A	Quad. 2-input Positive NAND Gates
HD74HCT04A	Hex Inverters
HD74HCT08A	Quad. 2-input Positive AND Gates
HD74HCT237	3-to-8-line Decoder/Demultiplexer with Address Latch
HD74HCT238	3-to-8-line Decoder/Demultiplexer
HD74HCT240	Octal Buffers/Line Drivers/Line Receivers(with inverted 3-state outputs)