74ACT521PC

更新时间： 2024-11-08 22:56:15

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		比较器
页数	文件大小	规格书
8页	83K
描述
8-Bit Identity Comparator

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数据手册
替代型号

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74ACT521PC 数据手册

November 1988

Revised November 1999

74AC521 • 74ACT521

8-Bit Identity Comparator

General Description

Features

The AC/ACT521 is an expandable 8-bit comparator. It

compares two words of up to eight bits each and provides a

LOW output when the two words match bit for bit. The

expansion input I_{A = B}also serves as an active LOW enable

■ I_CCreduced by 50%

■ Compares two 8-bit words in 6.5 ns typ

■ Expandable to any word length

■ 20-pin package

input.

■ Outputs source/sink 24 mA

■ ACT521 has TTL-compatible inputs

Ordering Code:

Order Number Package Number

Package Description

74AC521SC

74AC521SJ

74AC521PC

74ACT521SC

74ACT521SJ

74ACT521PC

M20B

M20D

N20A

M20B

M20D

N20A

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

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

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

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

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

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

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

Logic Symbols

Connection Diagram

IEEE/IEC

Pin Descriptions

Pin Names

Description

Word A Inputs

Word B Inputs

A₀–A₇

B₀–B₇

T_{A = B}

O_{A = B}

Expansion or Enable Input

Identity Output

FACT is a trademark of Fairchild Semiconductor Corporation.

DS009964

www.fairchildsemi.com

12 3 4 5 6 7 8

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74ACT521PC 替代型号

型号	品牌	替代类型	描述	数据表
74ACT520SC	FAIRCHILD	完全替代	8-Bit Identity Comparator
74ACT520PC	FAIRCHILD	完全替代	8-Bit Identity Comparator

与74ACT521PC相关器件

型号	品牌	获取价格	描述	数据表
74ACT521PCQR	TI	获取价格	ACT SERIES, 8-BIT IDENTITY COMPARATOR, INVERTED OUTPUT, PDIP20, PLASTIC, DIP-20
74ACT521SC	FAIRCHILD	获取价格	8-Bit Identity Comparator
74ACT521SC	TI	获取价格	ACT SERIES, 8-BIT IDENTITY COMPARATOR, INVERTED OUTPUT, PDSO20, SOIC-20
74ACT521SC_NL	FAIRCHILD	获取价格	Identity Comparator, AC Series, 8-Bit, Inverted Output, CMOS, PDSO20, 0.300 INCH, LEAD FRE
74ACT521SCQR	FAIRCHILD	获取价格	Identity Comparator, ACT Series, 8-Bit, Inverted Output, CMOS, PDSO20, SOIC-20
74ACT521SCQR	TI	获取价格	ACT SERIES, 8-BIT IDENTITY COMPARATOR, INVERTED OUTPUT, PDSO20, SOIC-20
74ACT521SCT	FAIRCHILD	获取价格	Identity Comparator, ACT Series, 8-Bit, Inverted Output, CMOS, PDSO20, SOIC-20
74ACT521SCTR	FAIRCHILD	获取价格	Identity Comparator, ACT Series, 8-Bit, Inverted Output, CMOS, PDSO20, SOIC-20
74ACT521SCX	TI	获取价格	ACT SERIES, 8-BIT IDENTITY COMPARATOR, INVERTED OUTPUT, PDSO20, SOIC-20
74ACT521SCX_NL	FAIRCHILD	获取价格	Identity Comparator, AC Series, 8-Bit, Inverted Output, CMOS, PDSO20, 0.300 INCH, MS-013,