SN54HCT74

更新时间： 2024-11-05 23:03:03

品牌	Logo	应用领域
德州仪器 - TI		触发器
页数	文件大小	规格书
5页	103K
描述
DUAL D-TYPE POSITIVE-EDGE-TRIGGERED FLIP-FLOPS WITH CLEAR AND PRESET

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SN54HCT74 数据手册

SN54HCT74, SN74HCT74

DUAL D-TYPE POSITIVE-EDGE-TRIGGERED FLIP-FLOPS

WITH CLEAR AND PRESET

SCLS169B – DECEMBER 1982 – REVISED MAY 1997

SN54HCT74 . . . J OR W PACKAGE

SN74HCT74 . . . D, N, OR PW PACKAGE

(TOP VIEW)

Inputs Are TTL-Voltage Compatible

Package Options Include Plastic

Small-Outline (D), Thin Shrink

Small-Outline (PW), and Ceramic Flat (W)

Packages, Ceramic Chip Carriers (FK), and

Standard Plastic (N) and Ceramic (J)

300-mil DIPs

1CLR

2CLR

1CLK

1PRE

2CLK

10 2PRE

description

The ’HCT74 contain two independent D-type

positive-edge-triggered flip-flops. A low level at

the preset (PRE) or clear (CLR) inputs sets or

resets the outputs regardless of the levels of the

other inputs. When PRE and CLR are inactive

(high), data at the data (D) input meeting the setup

time requirements are transferred to the outputs

on the positive-going edge of the clock (CLK)

pulse. Clock triggering occurs at a voltage level

and is not directly related to the rise time of CLK.

Following the hold-time interval, data at the

D input may be changed without affecting the

levels at the outputs.

GND

SN54HCT74 . . . FK PACKAGE

(TOP VIEW)

20 19

1CLK

2CLK

1PRE

15 NC

9 10 11 12 13

2PRE

The SN54HCT74 is characterized for operation

over the full military temperature range of –55°C

to 125°C. The SN74HCT74 is characterized for

operation from –40°C to 85°C.

NC – No internal connection

FUNCTION TABLE

INPUTS

OUTPUT

PRE

CLR

CLK

†

This configuration is unstable; that is, it does not

persist when PRE or CLR returns to its inactive

(high) level.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

UNLESS OTHERWISE NOTED this document contains PRODUCTION

DATA information current as of publication date. Products conform to

specifications per the terms of Texas Instruments standard warranty.

Production processing does not necessarily include testing of all

parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

12 3 4 5

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SN54HCT74 替代型号

型号	品牌	替代类型	描述	数据表
SN74HCT74	TI	功能相似	DUAL D-TYPE POSITIVE-EDGE-TRIGGERED FLIP-FLOPS WITH CLEAR AND PRESET

与SN54HCT74相关器件

型号	品牌	获取价格	描述	数据表
SN54HCT74_15	TI	获取价格	DUAL D-TYPE POSITIVE-EDGE-TRIGGERED FLIP-FLOPS WITH CLEAR AND PRESET
SN54HCT74FK	TI	获取价格	DUAL D-TYPE POSITIVE-EDGE-TRIGGERED FLIP-FLOPS WITH CLEAR AND PRESET
SN54HCT74FK-00	TI	获取价格	HCT SERIES, DUAL POSITIVE EDGE TRIGGERED D FLIP-FLOP, COMPLEMENTARY OUTPUT, CQCC20
SN54HCT74FKR	TI	获取价格	HCT SERIES, DUAL POSITIVE EDGE TRIGGERED D FLIP-FLOP, COMPLEMENTARY OUTPUT, CQCC20, CERAMI
SN54HCT74J	TI	获取价格	DUAL D-TYPE POSITIVE-EDGE-TRIGGERED FLIP-FLOPS WITH CLEAR AND PRESET
SN54HCT74J-00	TI	获取价格	HCT SERIES, DUAL POSITIVE EDGE TRIGGERED D FLIP-FLOP, COMPLEMENTARY OUTPUT, CDIP14
SN54HCT74W	TI	获取价格	DUAL D-TYPE POSITIVE-EDGE-TRIGGERED FLIP-FLOPS WITH CLEAR AND PRESET
SN54HCT74WR	TI	获取价格	HCT SERIES, DUAL POSITIVE EDGE TRIGGERED D FLIP-FLOP, COMPLEMENTARY OUTPUT, CDFP14, CERAMI
SN54HCU04	TI	获取价格	HEX INVERTERS
SN54HCU04_07	TI	获取价格	HEX INVERTERS

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