©2008 Fairchild Semiconductor Corporation

www.fairchildsemi.com

74VHCT74A Rev. 1.4.0

May 2008

74VHCT74A

Dual D-Type Flip-Flop with Preset and Clear

Features

n

n

n

Power down protection is provided on all inputs and

outputs

n

n

Pin and function compatible with 74HCT74

General Description

The VHCT74A is an advanced high speed CMOS Dual

D-Type Flip-Flop fabricated with silicon gate CMOS tech-

nology. It achieves the high speed operation similar to

equivalent Bipolar Schottky TTL while maintaining the

CMOS low power dissipation. The signal level applied to

the D INPUT is transferred to the Q OUTPUT during the

positive going transition of the CK pulse. CLR and PR

are independent of the CK and are accomplished by set-

ting the appropriate input LOW.

Protection circuits ensure that 0V to 7V can be applied to

the input pins without regard to the supply voltage and to

device destruction due to mismatched supply and input/

output voltages. This device can be used to interface 3V

to 5V systems and two supply systems such as battery

backup.

Ordering Information

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

All packages are lead free per JEDEC: J-STD-020B standard.

Order Number

Package

Number

Package Description

74VHCT74AM

M14A

14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150"

Narrow

74VHCT74ASJ

M14D

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

74VHCT74AMTC

MTC14

14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153,

4.4mm Wide