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74LCX32374 Datasheet(PDF) 2 Page - Fairchild Semiconductor

Part No. 74LCX32374
Description  Low Voltage 32-Bit D-Type Flip-Flop with 5V Tolerant Inputs and Outputs Preliminary
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

74LCX32374 Datasheet(HTML) 2 Page - Fairchild Semiconductor

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Preliminary
www.fairchildsemi.com
2
Connection Diagram
(Top Thru View)
Functional Description
The
LCX32374
consists
of
thirty-two edge-triggered
flip-flops with individual D-type inputs and 3-STATE true
outputs. The device is byte controlled with each byte func-
tioning identically, but independent of the other. The control
pins can be shorted together to obtain full 32-bit operation.
Each byte has a buffered clock and buffered Output Enable
common to all flip-flops within that byte. The description
which follows applies to each byte. Each flip-flop will store
the state of their individual D inputs that meet the setup and
hold time requirements on the LOW-to-HIGH Clock (CPn)
transition. With the Output Enable (OEn) LOW, the con-
tents of the flip-flops are available at the outputs. When
OEn is HIGH, the outputs go to the high impedance state.
Operation of the OEn input does not affect the state of the
flip-flops.
Pin Descriptions
FBGA Pin Assignments
Truth Table
X
= Immaterial
Z
= High Impedance
O0 = Previous O0 before HIGH-to-LOW of CP
Pin Names
Description
OEn
Output Enable Input (Active LOW)
CPn
Clock Pulse Input
I0–I31
Inputs
O0–O31
Outputs
1
234
56
A
O1
O0
OE1
CP1
I0
I1
B
O3
O2
GND
GND
I2
I3
C
O5
O4
VCC
VCC
I4
I5
D
O7
O6
GND
GND
I6
I7
E
O9
O8
GND
GND
I8
I9
F
O11
O10
VCC
VCC
I10
I11
G
O13
O12
GND
GND
I12
I13
H
O14
O15
OE2
CP2
I15
I14
J
O17
O16
OE3
CP3
I16
I17
K
O19
O18
GND
GND
I18
I19
L
O21
O20
VCC
VCC
I20
I21
M
O23
O22
GND
GND
I22
I23
N
O25
O24
GND
GND
I24
I25
P
O27
O26
VCC
VCC
I26
I27
R
O29
O28
GND
GND
I28
I29
T
O30
O31
OE4
CP4
I31
I30
Inputs
Outputs
CPn
OEn
In
On

LH
H

LL
L
LL
X
O0
XH
X
Z


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