74HC238D Philips Semiconductors, 74HC238D Datasheet

74HC238D

Manufacturer Part Number

74HC238D

Description

3-TO-8 DECODER DEMULTIPLEXER

Manufacturer

Philips Semiconductors

Datasheet

1.74HCT238N652.pdf (8 pages)

Specifications of 74HC238D

Circuit Type

High Speed, Low-Power Schottky, Silicon Gate

Current, Supply

160 μA

Function Type

3-Inputs

Logic Function

Decoder/Demultiplexer

Logic Type

CMOS

Package Type

SO-16

Special Features

3 to 8 Line

Temperature, Operating, Range

-40 to +125 °C

Voltage, Supply

5 V

Lead Free Status / Rohs Status

RoHS Compliant part Electrostatic Device

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1. General description

2. Features

74HC238 and 74HCT238 are high-speed Si-gate CMOS devices and are pin compatible

with Low-Power Schottky TTL (LSTTL).

The 74HC238/74HCT238 decoders accept three binary weighted address inputs (A0, A1,

A2) and when enabled, provide 8 mutually exclusive active HIGH outputs (Y0 to Y7). The

74HC238/74HCT238 features three enable inputs: two active LOW (E1 and E2) and one

active HIGH (E3). Every output will be LOW unless E1 and E2 are LOW and E3 is HIGH.

This multiple enable function allows easy parallel expansion of the “238” to a 1-to-32 (5

lines to 32 lines) decoder with just four “238” ICs and one inverter. The “238” can be used

as an eight output demultiplexer by using one of the active LOW enable inputs as the data

input and the remaining enable inputs as strobes. Unused enable inputs must be

permanently tied to their appropriate active HIGH or LOW state.

The 74HC238/74HCT238 is similar to the 74HC138/74HCT138 but has non-inverting

outputs.

74HC238; 74HCT238

3-to-8 line decoder/demultiplexer

Demultiplexing capability

Multiple input enable for easy expansion

Ideal for memory chip select decoding

Active HIGH mutually exclusive outputs

Multiple package options

Complies with JEDEC standard no. 7A

ESD protection:

Speciﬁed from 40 C to +85 C and from 40 C to +125 C

HBM JESD22-A114E exceeds 2000 V

MM JESD22-A115-A exceeds 200 V

Product data sheet

Related parts for 74HC238D

74HC238D Summary of contents

Page 1

General description 74HC238 and 74HCT238 are high-speed Si-gate CMOS devices and are pin compatible with Low-Power Schottky TTL (LSTTL). The 74HC238/74HCT238 decoders accept three binary weighted address inputs (A0, A1, A2) and when enabled, ...

Page 2

... NXP Semiconductors 3. Ordering information Table 1. Ordering information Type number Package Temperature range Name 74HC238N +125 C 74HC238D +125 C 74HC238DB +125 C 74HC238PW +125 C 74HC238BQ +125 C 74HCT238N +125 C 74HCT238D +125 C 74HCT238DB +125 C 74HCT238PW +125 C 74HCT238BQ +125 C 4. Functional diagram DECODER Fig 1. Logic symbol 74HC_HCT238_3 ...

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74HC238D Philips Semiconductors, 74HC238D Datasheet

74HC238D

Specifications of 74HC238D

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74HC238D Summary of contents

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