Octal Bidirectional Transceiver - National Semiconductor
Description
54ABT 74ABT245 Octal Bidirectional Transceiver with TRI-STATE Outputs
March 1996
54ABT 74ABT245 Octal Bidirectional Transceiver with TRI-STATE Outputs
General Description
The ’ABT245 contains eight non-inverting bidirectional buffers with TRI-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 determines 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
Y Bidirectional non-inverting buffers Y A and B output sink capability of 64 mA source capa-
bility of 32 mA
Y Guaranteed output skew Y Guaranteed multiple output switching specifications Y Output switching specified for both 50 pF and 250 pF
loads Y Guaranteed simultaneous switching noise level and dy-
namic threshold performance Y Guaranteed latchup protection Y High impedance glitch-free bus loading during entire
power up and power down cycle Y Non-destructive hot insertion capability Y Disable time is less than enable time to avoid bus
contention Y Standard Military Drawing (SMD) 5962-9214801
Commercial
Military
Package Number
Package Description
74ABT245CSC (Note 1)
M20B 20-Lead (0 300 Wide) Molded Small Outline JEDEC
74ABT245CSJ (Note 1)
M20D 20-Lead (0 300 Wide) Molded Small Outline EIAJ
74ABT245CPC
N20B 20-Lead (0 300 Wide) Molded Dual-In-Line
54ABT245J 883 J20A 20-Lead Ceramic Dual-In-Line
74ABT245CMSA (Note 1)
MSA20 20-Lead Molded Shrink Small Outline EIAJ Type II
54ABT245W 883 W20A 20-Lead Cerpak
54ABT245E 883 E20A 20-Lead Ceramic Leadless Chip Carrier Type C
74ABT245CMTC (Notes 1 2)
MTC20 20-Lead Molded Thin Shrink Small Outline JEDEC
Note 1 Devices also available in 13 reel Use suffix e SCX SJX MSAX and MTCX Note 2 Contact factory for package a...
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