TC74VHC393F/FN/FT

2007-10-01

1

TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic

TC74VHC393F,TC74VHC393FN,TC74VHC393FT

Dual Binary Counter

The TC74VHC393 is an advanced high speed CMOS 4-BIT

technology.

It achieves the high speed operation similar to equivalent

Bipolar Schottky TTL while maintaining the CMOS low power

dissipation.

It contains two independent counter circuits in one package, so

that counting or frequency division of eight binary bits can be

achieved with one IC.

This device changes state on the negative going transition of

the CLOCK pulse. The counter can be reset to “0” (QA to QD =

“L”) by a high at the CLEAR input regardless of other inputs.

An input protection circuit ensures that 0 to 5.5 V can be

applied to the input pins without regard to the supply voltage.

This device can be used to interface 5 V to 3 V systems and two

supply systems such as battery back up. This circuit prevents

device destruction due to mismatched supply and input voltages.

Features

• Power down protection is provided on all inputs.

• Pin and function compatible with 74ALS393

Note: xxxFN (JEDEC SOP) is not available in

Japan.

TC74VHC393F

TC74VHC393FN

TC74VHC393FT

Weight

SOP14-P-300-1.27A

: 0.18 g (typ.)

SOL14-P-150-1.27

: 0.12 g (typ.)

TSSOP14-P-0044-0.65A

: 0.06 g (typ.)