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74LVT32374 Datasheet(PDF) 2 Page - Fairchild Semiconductor

Part No. 74LVT32374
Description  Low Voltage 32-Bit D-Type Flip-Flop with 3-STATE Outputs
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
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74LVT32374 Datasheet(HTML) 2 Page - Fairchild Semiconductor

   
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Connection Diagram
(Top Thru View)
Pin Descriptions
FBGA Pin Assignments
Functional Description
The LVT32374 and LVTH32374 consist 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 functioning 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-type inputs that meet the setup and hold time requirements on the LOW-to-HIGH Clock (CPn) transition. With
the Output Enable (OEn) LOW, the contents 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.
Truth Tables
H
= HIGH Voltage Level
L
= LOW Voltage Level
X
= Immaterial
Z
= HIGH Impedance
Oo = Previous Oo before HIGH-to-LOW of CP
Pin Names
Description
OEn
Output Enable Input (Active LOW)
CPn
Clock Pulse Input
I0–I31
Inputs
O0–O31
3-STATE Outputs
123
456
A
O1
O0
OE1
CP1
I0
I1
B
O3
O2
GND
GND
I2
I3
C
O5
O4
VCC1
VCC1
I4
I5
D
O7
O6
GND
GND
I6
I7
E
O9
O8
GND
GND
I8
I9
F
O11
O10
VCC1
VCC1
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
VCC2
VCC2
I20
I21
M
O23
O22
GND
GND
I22
I23
N
O25
O24
GND
GND
I24
I25
P
O27
O26
VCC2
VCC2
I26
I27
R
O29
O28
GND
GND
I28
I29
T
O30
O31
OE4
CP4
I31
I30
Inputs
Outputs
Inputs
Outputs
CP1
OE1
I0–I7
O0–O7
CP2
OE2
I8–I15
O8–O15

LH
H

LH
H

LL
L

LL
L
LL
X
Oo
LL
X
Oo
XH
X
Z
XHX
Z
Inputs
Outputs
Inputs
Outputs
CP3
OE3
I16–I23
O16–O23
CP4
OE4
I24–I31
O24–O31

LH
H

LH
H

LL
L

LL
L
LL
X
Oo
LL
X
Oo
XH
X
Z
XHX
Z


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