Datasheet > 74HCT85PW

74HCT85PW

更新时间： 2024-11-12 11:13:39

品牌	Logo	应用领域
安世 - NEXPERIA		光电二极管逻辑集成电路
页数	文件大小	规格书
17页	258K
描述
4-bit magnitude comparatorProduction

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74HCT85PW 数据手册

74HC85; 74HCT85

4-bit magnitude comparator

Rev. 4 — 4 August 2021

Product data sheet

1. General description

The 74HC85; 74HCT85 is a 4-bit magnitude comparator that can be expanded to almost any

length. They perform comparison of two 4-bit binary, BCD or other monotonic codes and present

the three possible magnitude results at the outputs (Q_A>B, Q_A=Band Q_A<B). The 4-bit inputs are

weighted (A0 to A3 and B0 to B3), where A3 and B3 are the most significant bits. For proper

compare operation the expander inputs (I_A>B, I_A=Band I_A<B) to the least significant position must

be connected as follows: I_A<B= I_A>B= LOW and I_A=B= HIGH. For words greater than 4-bits, units

can be cascaded by connecting outputs Q_A>B, Q_A=Band Q_A<Bto the corresponding inputs of

the significant comparator. Inputs include clamp diodes. This enables the use of current limiting

resistors to interface inputs to voltages in excess of V_CC

2. Features and benefits

•

Wide supply voltage range from 2.0 to 6.0 V

•

CMOS low power dissipation

High noise immunity

Latch-up performance exceeds 100 mA per JESD 78 Class II Level B

Input levels:

•

For 74HC85: CMOS level

For 74HCT85: TTL level

•

Complies with JEDEC standards:

•

JESD8C (2.7 V to 3.6 V)

JESD7A (2.0 V to 6.0 V)

ESD protection:

•

HBM JESD22-A114-A exceeds 2000 V

MM JESD22-A115-A exceeds 200 V

•

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

3. Applications

•

Process controllers

Servo-motor control

4. Ordering information

Table 1. Ordering information

Type number

Package

Temperature range

−40 °C to +125 °C

Name

Description

Version

74HC85D

SO16

plastic small outline package; 16 leads;

body width 3.9 mm

SOT109-1

74HCT85D

74HC85PW

74HCT85PW

−40 °C to +125 °C

TSSOP16

plastic thin shrink small outline package; 16 leads;

body width 4.4 mm

SOT403-1

12 3 4 5 6 7...17

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