© 1999 Fairchild Semiconductor Corporation

DS010235

www.fairchildsemi.com

July 1989

Revised November 1999

74ACQ244 • 74ACTQ244

Quiet Series

 Octal Buffer/Line Driver

with 3-STATE Outputs

General Description

The ACQ/ACTQ244 is an octal buffer and line driver

designed to be employed as a memory address driver,

clock driver and bus oriented transmitter or receiver which

provides improved PC board density. The ACQ/ACTQ uti-

lizes Fairchild Quiet Series

 technology to guarantee quiet

output switching and improved dynamic threshold perfor-

mance. FACT Quiet Series

 features GTO output control

and undershoot corrector in addition to a split ground bus

for superior performance.

Features

s Guaranteed simultaneous switching noise level and

dynamic threshold performance

s Guaranteed pin-to-pin skew AC performance

s Improved latch-up immunity

s 3-STATE outputs drive bus lines or buffer memory

address registers

s Outputs source/sink 24 mA

s Faster prop delays than the standard AC/ACT244

Ordering Code:

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

Connection Diagram

Pin Descriptions

FACT

, Quiet Series, FACT Quiet Series, and GTO are trademarks of Fairchild Semiconductor Corporation.

Order Number

Package Number

Package Description

74ACQ244SC

M20B

20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide Body

74ACQ244SJ

M20D

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

74ACQ244PC

N20A

20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide

74ACTQ244SC

M20B

20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide Body

74ACTQ244SJ

M20D

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

74ACTQ244QSC

MQA20

20-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150” Wide

74ACTQ244MSA

MSA20

20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide

74ACTQ244PC

N20A

20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide

Pin Names

Description

3-STATE Output Enable Inputs

Inputs

Outputs