Preliminary
© 2001 Fairchild Semiconductor Corporation DS500411 www.fairchildsemi.com
September 2000
Revised August 2001
7
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L
V
TH32
952
Low V
o
lt
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3
2
-Bi
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Regist
ered T
r
a
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sceiv
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r w
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th 3-
ST
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74LVTH32952
Low Voltage 32-Bit Registered Transceiver
with 3-STATE Outputs (Preliminary)
General Description
The LVTH32952 is a 32-bit registered transceiver. Four
8-bit back to back registers store data flowing in both direc-
tions between two bidirectional buses. Separate clock,
clock enable, and output enable signals are provided for
each register.
The LVTH32952 data inputs include bushold, eliminating
the need for external pull-up resistors to hold unused
inputs.
The registered transceiver is designed for low voltage
(3.3V) V
CC
applications, but with the capability to provide a
TTL interface to a 5V environment.
The LVTH32952 is fabricated with an advanced BiCMOS
technology to achieve high speed operation similar to 5V
ABT while maintaining low power dissipation.
Features
a73 Input and output interface capability to systems at
5V V
CC
a73 Bushold data inputs eliminate the need for external
pull-up resistors to hold unused inputs
a73 Live insertion/extraction permitted
a73 Power Up/Down high impedance provides glitch-free
bus loading
a73 Outputs source/sink −32 mA/+64 mA
a73 ESD performance:
Human-body model > 2000V
Machine model > 200V
Charged-device model > 1000V
a73 Packaged in plastic Fine-Pitch Ball Grid Array (FBGA)
(Preliminary)

Ordering Code:
Note 1: BGA package available in Tape and Reel only.
Order Number Package Number Package Description
74LVTH32952GX
(Note 1)
BGA114A
(Preliminary)
114-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide
[TAPE and REEL]