MM54C85

更新时间： 2024-09-26 22:46:11

品牌	Logo	应用领域
美国国家半导体 - NSC		比较器
页数	文件大小	规格书
4页	119K
描述
4-Bit Magnitude Comparator

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MM54C85 数据手册

September 1989

MM54C85/MM74C85 4-Bit Magnitude Comparator

General Description

The MM54C85/MM74C85 is a four-bit magnitude compara-

tor which will perform comparison of straight binary or BCD

codes. The circuit consists of eight comparing inputs (A0,

Features

Wide supply voltage range

3.0V to 15V

1.0V

Guaranteed noise margin

High noise immunity

0.4 V (typ.)

A1, A2, A3, B0, B1, B2, B3), three cascading inputs (A B,

Low power

TTL compatibility

fan out of 2

driving 74L

B and

B). This device compares two four-bit words (A and B)

B and A

B), and three outputs (A

B, A

Expandable to ‘N’ stages

and determines whether they are ‘‘greater than,’’ ‘‘less

than,’’ or ‘‘equal to’’ each other by a high level on the appro-

priate output. For words greater than four-bits, units can be

Applicable to binary or BCD

Low power pinout: 54L85/74L85

B) of the least significant stage to the cascade inputs

cascaded by connecting the outputs (A

B, A

B, and

B) of the next-significant stage. In

B, A

B and A

addition the least significant stage must have a high level

voltage (V

B and A

) applied to the A

IN(1)

B input and low level

) applied to A

IN(0)

B inputs.

Logic Diagram

TL/F/5886–1

1995 National Semiconductor Corporation

TL/F/5886

RRD-B30M105/Printed in U. S. A.

12 3 4

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