TL/F/9503
54F/74F245
Octal
Bidirectional
Transceiver
with
TRI-STATE
Outputs
June 1995
54F/74F245
Octal Bidirectional Transceiver with TRI-STATE Outputs
General Description
The ’F245 contains eight non-inverting bidirectional buffers
with TRI-STATE outputs and is intended for bus-oriented
applications. Current sinking capability is 24 mA (20 mA Mil)
at the A ports and 64 mA (48 mA Mil) at the B ports. The
Transmit/Receive (T/R) input determines the direction of
data flow through the bidirectional transceiver. Transmit (ac-
tive 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
Non-inverting buffers
Y
Bidirectional data path
Y
A outputs sink 24 mA (20 mA Mil)
Y
B outputs sink 64 mA (48 mA Mil)
Y
Guaranteed 4000V minimum ESD protection
Commercial Military
Package
Package Description
Number
74F245PC N20A 20-Lead (0.300 Wide) Molded Dual-In-Line
54F245DM (Note 2) J20A 20-Lead Ceramic Dual-In-Line
74F245SC (Note 1) M20B 20-Lead (0.300 Wide) Molded Small Outline, JEDEC
74F245SJ (Note 1) M20D 20-Lead (0.300 Wide) Molded Small Outline, EIAJ
74F245MSA (Note 1) MSA20 20-Lead Molded Shrink Small Outline, EIAJ Type II
54F245FM (Note 2) W20A 20-Lead Cerpack
54F245LM (Note 2) E20A 20-Lead Ceramic Leadless Chip Carrier, Type C
Note 1: Devices also available in 13 reel. Use suffix e SCX, SJX and MSAX.
Note 2: Military grade device with environmental and burn-in processing. Use suffix e DMQB, FMQB and LMQB.
Logic Symbols
TL/F/9503–3
IEEE/IEC
TL/F/9503–4
TRI-STATE is a registered trademark of National Semiconductor Corporation.
C
1995 National Semiconductor Corporation RRD-B30M75/Printed in U. S. A.