74VHC138NX

更新时间： 2024-11-24 00:01:23

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		解码器解复用器
页数	文件大小	规格书
7页	68K
描述
3-to-8 Decoder/Demultiplexer

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中文翻译

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数据手册

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74VHC138NX 数据手册

November 1992

Revised April 1999

74VHC138

3-to-8 Decoder/Demultiplexer

0V to 7V can be applied to the input pins without regard to

the supply voltage. This device can be used to interface 5V

to 3V systems and two supply systems such as battery

back up. This circuit prevents device destruction due to

mismatched supply and input voltages.

General Description

The VHC138 is an advanced high speed CMOS 3-to-8

decoder/demultiplexer fabricated with silicon gate CMOS

technology. It achieves the high speed operation similar to

equivalent Bipolar Schottky TTL while maintaining the

CMOS low power dissipation.

Features

When the device is enabled, 3 binary select inputs (A₀, A₁

and A₂) determine which one of the outputs (O₀–O₇) will go

LOW. When enable input E₃is held LOW or either E₁or E₂

■ High Speed: t_PD= 5.7ns (typ) at T_A= 25°C

■ Low power dissipation: I_CC= 4 µA (max.) at T_A= 25°C

■ High noise immunity: V_NIH= V_NIL= 28% V_CC(min.)

is held HIGH, decoding function is inhibited and all outputs

go HIGH. E₃, E₁and E₂inputs are provided to ease cas-

■ Power down protection provided on all inputs

■ Pin and function compatible with 74HC138

cade connection and for use as an address decoder for

memory systems. An input protection circuit ensures that

Ordering Code:

Order Number Package Number

Package Description

74VHC138M

74VHC138SJ

74VHC138MTC

74VHC138N

M16A

M16D

MTC16

N16E

16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow

16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide

16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide

Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Logic Symbols

Connection Diagram

IEEE/IEC

Pin Descriptions

Pin Names

Description

A₀–A₂

E₁–E₂

E₃

Address Inputs

Enable Inputs

Enable Input

Outputs

O₀–O₇

DS011537.prf

www.fairchildsemi.com

12 3 4 5 6 7

中文翻译

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与74VHC138NX相关器件

型号	品牌	获取价格	描述	数据表
74VHC138SJ	FAIRCHILD	获取价格	3-to-8 Decoder/Demultiplexer
74VHC138SJX	FAIRCHILD	获取价格	3-to-8 Decoder/Demultiplexer
74VHC138T	STMICROELECTRONICS	获取价格	3 TO 8 LINE DECODER INVERTING
74VHC138TTR	STMICROELECTRONICS	获取价格	3 TO 8 LINE DECODER (INVERTING)
74VHC139	STMICROELECTRONICS	获取价格	DUAL 2 TO 4 DECODER/DEMULTIPLEXER
74VHC139	FAIRCHILD	获取价格	Dual 2-to-4 Decoder/Demultiplexer
74VHC139_04	STMICROELECTRONICS	获取价格	DUAL 2 TO 4 DECODER/DEMULTIPLEXER
74VHC139FT	TOSHIBA	获取价格	Dual 2-to-4 Line Decoder, TSSOP16B
74VHC139M	FAIRCHILD	获取价格	Dual 2-to-4 Decoder/Demultiplexer
74VHC139M	TI	获取价格	AHC/VHC SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDSO16, 0.150 INCH, PLASTIC, SOIC-1