SN74AHC74-EP

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

WITH CLEAR AND PRESET

SCLS489 – JUNE 2003

1

POST OFFICE BOX 655303

– One Assembly/Test Site, One Fabrication

Site

–55

°C to 125°C

Sources (DMS) Support

CMOS) Process

JESD 17

MIL-STD-883, Method 3015; Exceeds 200 V

Using Machine Model (C = 200 pF, R = 0)

† Component qualification in accordance with JEDEC and industry

standards to ensure reliable operation over an extended

temperature range. This includes, but is not limited to, Highly

Accelerated Stress Test (HAST) or biased 85/85, temperature

cycle, autoclave or unbiased HAST, electromigration, bond

intermetallic life, and mold compound life. Such qualification

testing should not be viewed as justifying use of this component

beyond specified performance and environmental limits.

description/ordering information

The SN74AHC74 dual positive-edge-triggered device is a D-type flip-flop.

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 is transferred to the outputs on the positive-going edge of the clock pulse. Clock triggering occurs

at a voltage level and is not directly related to the rise time of the clock pulse. Following the hold-time interval,

data at the D input can be changed without affecting the levels at the outputs.

ORDERING INFORMATION

TA

PACKAGE‡

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

55

°Cto125°C

SOIC – D

Tape and reel

SN74AHC74MDREP

AHC74MEP

–55

°C to 125°C

TSSOP – PW

Tape and reel

SN74AHC74MPWREP

AHC74EP

‡ Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines

are available at www.ti.com/sc/package.

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.

PRODUCTION DATA information is 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.

Copyright

 2003, Texas Instruments Incorporated

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3

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14

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9

8

1CLR

1D

1CLK

1PRE

1Q

1Q

GND

2CLR

2D

2CLK

2PRE

2Q

2Q

D OR PW PACKAGE

(TOP VIEW)

EPIC is a trademark of Texas Instruments.