TL/F/11647
74ABT16952
16-Bit
Registered
Transceiver
with
TRI-STATE
Outputs
September 1996
74ABT16952
16-Bit Registered Transceiver with TRI-STATE Outputs
General Description
The ’ABT16952 is a 16-bit registered transceiver. Two 8-bit
back to back registers store data flowing in both directions
between two bidirectional buses. Separate clock, clock en-
able and TRI-STATE output enable signals are provided
for each register. The output pins are guaranteed to source
32 mA (24 mA mil.) and to sink 64 mA (48 mA mil).
Features
Y
Separate clock, clock enable and TRI-STATE output
enable provided for each register
Y
A and B output sink capability of 64 mA source capabil-
ity of 32 mA
Y
Guaranteed latchup protection
Y
High impedance glitch free bus loading during entire
power up and power down cycle
Y
Nondestructive hot insertion capability
Commercial Package Number Package Description
74ABT16952CSSC (Note 1) MS56A 56-Lead (0.300 Wide) Molded Shrink Small Outline, JEDEC (SSOP)
74ABT16952CMTD (Notes 1, 2) MTD56 56-Lead Molded Thin Shrink Small Outline, JEDEC (TSSOP)
Note 1: Devices also available in 13 reel. Use suffix e SSCX and MTDX.
Note 2: Contact factory for package availability.
Pin Descriptions
Pin Names Description
A
0
–A
16
Data Register A Inputs/
B-Register TRI-STATE Outputs
B
0
–B
16
Data Register B Inputs/
A-Register TRI-STATE Outputs
CPAB
n
, CPBA
n
Clock Pulse Inputs
CEA
n
, CEB
n
Clock Enable
OEAB
n
, OEBA
n
Output Enable Inputs
Connection Diagram
Pin Assignment
for SSOP
TL/F/11647–1
TRI-STATE is a registered trademark of National Semiconductor Corporation.
C
1996 National Semiconductor Corporation RRD-B30M96/Printed in U. S. A. http://www.national.com