© 2005 Fairchild Semiconductor Corporation

DS010945

www.fairchildsemi.com

September 1991

Revised March 2005

74ABT245

Octal Bi-Directional Transceiver with 3-STATE Outputs

General Description

The ABT245 contains eight non-inverting bidirectional buff-

ers with 3-STATE outputs and is intended for bus-oriented

applications. Current sinking capability is 64 mA on both

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

mines the direction of data flow through the bidirectional

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.

Features

s Bidirectional non-inverting buffers

s A and B output sink capability of 64 mA, source

capability of 32 mA

s Guaranteed output skew

s Guaranteed multiple output switching specifications

s Output switching specified for both 50 pF and 250 pF

loads

s Guaranteed simultaneous switching, noise level and

dynamic threshold performance

s Guaranteed latchup protection

s High impedance glitch-free bus loading during entire

power up and power down cycle

s Non-destructive hot insertion capability

s Disable time is less than enable time to avoid bus

contention

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.

Order Number

Package

Package Description

Number

74ABT245CSC

M20B

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

74ABT245CSJ

M20D

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

74ABT245CMSA

MSA20

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

74ABT245CMTC

MTC20

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

74ABT245CMTCX_NL

(Note 1)

MTC20

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

Wide

74ABT245CPC

N20A

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