© 2005 Fairchild Semiconductor Corporation

DS010236

www.fairchildsemi.com

July 1989

Revised March 2005

74ACQ245 • 74ACTQ245

Quiet Series

¥ Octal Bidirectional Transceiver

with 3-STATE Inputs/Outputs

General Description

The ACQ/ACTQ245 contains eight non-inverting bidirec-

tional buffers with 3-STATE outputs and is intended for bus-

oriented applications. Current sinking capability is 24 mA at

both the A and B ports. The Transmit/Receive (T/R) input

determines the direction of data flow through the bidirec-

tional transceiver. Transmit (active-HIGH) enables data

from A Ports to B Ports; Receive (active-LOW) enables

data from B Ports to A Ports. The Output Enable input,

when HIGH, disables both A and B ports by placing them in

a HIGH Z condition.

The ACQ/ACTQ utilizes Fairchild Quiet Series

¥ technol-

ogy to guarantee quiet output switching and improve

dynamic threshold performance. FACT Quiet Series

¥ fea-

tures 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 ACT245

Ordering Code:

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

Pb-Free package per JEDEC J-STD-020B.

Note 1: “_NL” indicates Pb-Free package (per JEDEC J-STD-020B). Device available in Tape and Reel only.

FACT

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

Order Number

Package

Package Description

Number

74ACQ245SC

M20B

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

74ACQ245SJ

M20D

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

74ACQ245PC

N20A

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

74ACTQ245SC

M20B

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

74ACTQ245SJ

M20D

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

74ACTQ245QSC

MQA20

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

74ACTQ245MSA

MSA20

20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide

74ACTQ245MTC

MTC20

20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

74ACTQ245MTCX_NL

(Note 1)

MTC20

Pb-Free 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm

Wide

74ACTQ245PC

N20A

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