MM74HC688SJX

更新时间： 2024-11-16 13:01:31

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		比较器
页数	文件大小	规格书
6页	89K
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数据手册
替代型号

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MM74HC688SJX 数据手册

September 1983

Revised February 1999

MM74HC688

8-Bit Magnitude Comparator (Equality Detector)

The comparator’s output can drive 10 low power Schottky

General Description

equivalent loads. This comparator is functionally and pin

compatible to the 74LS688. All inputs are protected from

damage due to static discharge by diodes to V_CCand

The MM74HC688 equality detector utilizes advanced sili-

con-gate CMOS technology to compare bit for bit two 8-bit

words and indicates whether or not they are equal. The

P=Q output indicates equality when it is LOW. A single

active low enable is provided to facilitate cascading of sev-

eral packages and enable comparison of words greater

than 8 bits.

ground.

Features

■ Typical propagation delay: 20 ns

■ Wide power supply range: 2–6V

■ Low quiescent current: 80 µA (74 Series)

■ Large output current: 4 mA (74 Series)

■ Same as HC521

This device is useful in memory block decoding applica-

tions, where memory block enable signals must be gener-

ated from computer address information.

Ordering Code:

Order Number Package Number

Package Description

MM74HC688WM

MM74HC688SJ

MM74HC688MTC

MM74HC688N

M20B

M20D

MTC20

N20A

20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide

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

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

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

Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Connection Diagram

Logic Diagram

Pin Assignments for DIP

Top View

Truth Table

Inputs

Data

P,Q

Enable

P = Q

P > Q

P < Q

DS005018.prf

www.fairchildsemi.com

12 3 4 5 6

中文翻译

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MM74HC688SJX 替代型号

型号	品牌	替代类型	描述	数据表
CD74HC688PWT	TI	功能相似	High-Speed CMOS Logic 8-Bit Magnitude Comparator
CD74HC688PWR	TI	功能相似	High-Speed CMOS Logic 8-Bit Magnitude Comparator
CD74HC688NSR	TI	功能相似	High-Speed CMOS Logic 8-Bit Magnitude Comparator

与MM74HC688SJX相关器件

型号	品牌	获取价格	描述	数据表
MM74HC688WM	FAIRCHILD	获取价格	8-Bit Magnitude Comparator (Equality Detector)
MM74HC688WM_NL	FAIRCHILD	获取价格	Magnitude Comparator, HC/UH Series, 8-Bit, Inverted Output, CMOS, PDSO20, 0.300 INCH, MS-0
MM74HC688WMX	FAIRCHILD	获取价格	Magnitude Comparator, HC/UH Series, 8-Bit, Inverted Output, CMOS, PDSO20, 0.300 INCH, MS-0
MM74HC688WMX	ROCHESTER	获取价格	Magnitude Comparator, HC/UH Series, 8-Bit, Inverted Output, CMOS, PDSO20, 0.300 INCH, MS-0
MM74HC688WMX_NL	FAIRCHILD	获取价格	Magnitude Comparator, HC/UH Series, 8-Bit, Inverted Output, CMOS, PDSO20, 0.300 INCH, MS-0
MM74HC7266	NSC	获取价格	Quad 2-Input Exclusive NOR Gate
MM74HC7266J	NSC	获取价格	Quad 2-Input Exclusive NOR Gate
MM74HC7266M	NSC	获取价格	IC HC/UH SERIES, QUAD 2-INPUT XNOR GATE, PDSO14, PLASTIC, SO-14, Gate
MM74HC7266M	TI	获取价格	IC HC/UH SERIES, QUAD 2-INPUT XNOR GATE, PDSO14, PLASTIC, SO-14, Gate
MM74HC7266MX	TI	获取价格	HC/UH SERIES, QUAD 2-INPUT XNOR GATE, PDSO14, PLASTIC, SO-14

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