TL/F/12151
74F2245
Octal
Bidirectional
Transceiver
with
TRI-STATE
Outputs
November 1996
74F2245
Octal Bidirectional Transceiver with TRI-STATE Outputs
General Description
The ’F2245 contains eight non-inverting bidirectional buffers
with TRI-STATE outputs and is intended for bus-oriented
applications. Current sinking capability is 24 mA at the A
ports and 12 mA at the B ports. The Transmit/Receive
(T/R) input determines the direction of data flow through
the bidirectional transceiver. Transmit (active HIGH) en-
ables 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 25X series resistors in the outputs reduce ringing and
eliminate the need for external resistors.
Features
Y
Non-inverting buffers
Y
Bidirectional data path
Y
A outputs sink 24 mA
Y
B outputs sink 12 mA
Y
25X series resistors in B outputs eliminate the need for
external resistors
Y
Guaranteed 2000V minimum ESD protection
Commercial
Package
Package Description
Number
74F2245SC (Note 1) M20B 20-Lead (0.300 Wide) Molded Small Outline, JEDEC
Note 1: Devices also available in 13 reel. Use suffix e SCX.
Logic Symbols
TL/F/12151–1
IEEE/IEC
TL/F/12151–2
TRI-STATE is a registered trademark of National Semiconductor Corporation.
C
1996 National Semiconductor Corporation RRD-B30M126/Printed in U. S. A. http://www.national.com