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HD74HC237 - 3-to-8-line Decoder/Demultiplexer with Address Latch

General Description

The HD74HC237 decodes a three-bit Address to one-of-eight active-high outputs.

The device has a transparent latch for storage of the Address.

Two Chip Selects, one active-low and one active-high, are provided to facilitate the demultiplexing, cascading, and chip-selecting functions.

Key Features

  • High Speed Operation: tpd (Data to Y) = 19 ns typ (CL = 50 pF) High Output Current: Fanout of 10 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) HD74HC237 Function Table Inputs Enable GL X X L L L L L L L L H G1 X L H H H H H H H H H G2 H X L L L L L L L L L Select C X X L L L L H H H H X B X X L L H H L L H H X A X X L H L H L H L H X Outputs Y0 L L.

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📁 Similar Datasheet

Part Number Description Manufacturer
HD74HC237 3-to-8-line Decoder/Demultiplexer Renesas
HD74HC238 3-to-8-line Decoder/Demultiplexer Renesas
HD74HC20 Dual 4-input NAND Gates Renesas
HD74HC21 Dual 4-input AND Gates Renesas
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Other Datasheets by Hitachi Semiconductor (now Renesas)

Part Number Description
HD74HC238 3-to-8-line Decoder/Demultiplexer
HD74HC20 Dual 4-input NAND Gates
HD74HC21 Dual 4-input AND Gates
HD74HC221 Dual Monostable Multivibrators (with Schmitt Trigger Input)
HD74HC240 Octal Buffers/Line Drivers/Line Receivers(with inverted 3-state outputs)

Full PDF Text Transcription (Reference)

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HD74HC237 3-to-8-line Decoder/Demultiplexer with Address Latch Description The HD74HC237 decodes a three-bit Address to one-of-eight active-high outputs. The device has a transparent latch for storage of the Address. Two Chip Selects, one active-low and one active-high, are provided to facilitate the demultiplexing, cascading, and chip-selecting functions. The demultiplexing function is accomplished by using the Address inputs to select the desired device output, and then by using one of the Chip Selects as a data input while holding the other one active. The HD74HD237 is the noninverting version of the HD74HC137.