54ABT543
Octal Registered Transceiver with TRI-STATE
®
Outputs
General Description
The ’ABT543 octal transceiver contains two sets of D-type
latches for temporary storage of data flowing in either direc-
tion. Separate Latch Enable and Output Enable inputs are
provided for each register to permit independent control of
inputting and outputting in either direction of data flow.
Features
n Back-to-back registers for storage
n Bidirectional data path
n A and B outputs have current sourcing capability of 24
mA and current sinking capability of 48 mA
n Separate controls for data flow in each direction
n Guaranteed latchup protection
n High impedance glitch free bus loading during entire
power up and power down cycle
n Nondestructive hot insertion capability
n Standard Military Drawing (SMD) 5962-9231401
Ordering Code:
Military Package Package Description
Number
54ABT543J-QML J24A 24-Lead Ceramic Dual-In-Line
54ABT543W-QML W24C 24-Lead Cerpack
54ABT543E-QML E28A 28-Lead Ceramic Leadless Chip Carrier, Type C
Connection Diagrams
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
Pin Assignment for
DIP and Flatpak
DS100218-1
Pin Assignment
for LCC
DS100218-2
August 1998
54ABT543
Octal
Registered
T
ransceiver
with
TRI-ST
A
T
E
Outputs
© 1998 National Semiconductor Corporation DS100218 www.national.com