74ABT245 Octal Bi-Directional Transceiver with 3-STATE Outputs
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:
Order Number
74ABT245CSC
74ABT245CSJ
74ABT245CMSA
74ABT245CMTC
74ABT245CMTCX_NL
(Note 1)
74ABT245CPC
Package
Number
M20B
M20D
MSA20
MTC20
MTC20
N20A
Package Description
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Pb-Free 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm
Wide
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
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.
© 2005 Fairchild Semiconductor Corporation
DS010945
www.fairchildsemi.com
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