![](http://datasheet.mmic.net.cn/260000/PI74LCX16952A_datasheet_15942215/PI74LCX16952A_1.png)
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PS2096A 02/12/97
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PI74LCX16952
Fast CMOS 3.3V 16-Bit
16-Bit Registered Transceivers
Product Description
Pericom Semiconductors PI74LCX series of logic circuits are
produced using the Companys advanced 0.6 micron CMOS
technology, achieving industry leading speed grades.
The PI74LCX16952 is a 16-bit registered transceivers organized with
two sets of eight D-type latches with separate input and output
controls for each set. For data flow from A to B, for example, the A-
to-B Enable (xCEAB) input must be LOW in order to enter data
from xAx. The data present on the A port will be clocked on the B
register when xCLKAB toggles from LOW-to-HIGH. The xOEAB
control performs the output enable function on the B port. Control
of data from B to A is similar, but uses the xCEAB, xCLKAB, and
xOEAB inputs. By connecting the control pins of the two independent
transceivers together, a full 16-bit operation can be achieved. The
output buffers are designed with a Power-Off disable allowing "live
insertion" of boards when used as backplane drivers.
The PI74LCX16952 can be driven from either 3.3V or 5.0V devices
allowing this device to be used as a translator in a mixed
3.3/5.0V system.
Product Features
Functionally compatible with FCT3, LVT, and 74
series 16952 families of products
Tri-State outputs
5V Tolerant inputs and outputs
2.0V-3.6V V
CC
supply operation
Balanced sink and source output drives (24 mA)
Low ground bounce outputs
Supports live insertion
ESD Protection exceeds 2000V, Human Body Model
200V, Machine Model
Packages available:
56-pin 240-mil wide plastic TSSOP (A)
56-pin 300-mil wide plastic SSOP (V)
Logic Block Diagram
D
1
CLKAB
C
1
OEAB
1
CEAB
1
CLKBA
1
CEBA
1
B
0
TO 7 OTHER CHANNELS
D
C
1
A
0
1
OEBA
D
2
CLKAB
C
2
OEAB
2
CEAB
2
CLKBA
2
CEBA
2
B
0
TO 7 OTHER CHANNELS
D
C
2
A
0
2
OEBA