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74VCX32374GX

P1-P3P4-P6P7-P9
© 2002 Fairchild Semiconductor Corporation DS500402 www.fairchildsemi.com
December 2000
Revised November 2002
74VCX32374 Low Voltage 32-Bit D-Type Flip-Flops with 3.6V Tolerant Inputs and Outputs
74VCX32374
Low Voltage 32-Bit D-Type Flip-Flops
with 3.6V Tolerant Inputs and Outputs
General Description
The VCX32374 contains thirty-two non-inverting D-type
flip-flops with 3-STATE outputs and is intended for bus ori-
ented applications. The device is byte controlled. A buff-
ered clock (CP) and output enable (OE
) are common to
each byte and can be shorted together for full 32-bit opera-
tion.
The 74VCX32374 is designed for low voltage (1.2V to
3.6V) V
CC
applications with I/O compatibility up to 3.6V.
The 74VCX32374 is fabricated with an advanced CMOS
technology to achieve high speed operation while maintain-
ing low CMOS power dissipation.
Features
■ 1.2V to 3.6V V
CC
supply operation
■ 3.6V tolerant inputs and outputs
■ t
PD
3.0 ns max for 3.0V to 3.6V V
CC
■ Power-off high impedance inputs and outputs
■ Supports live insertion and withdrawal (Note 1)
■ Static Drive (I
OH
/I
OL
)
±24 mA @ 3.0V V
CC
■ Uses patented noise/EMI reduction circuitry
■ Latch-up performance exceeds 300 mA
■ ESD performance:
Human body model
> 2000V
Machine model
> 200V
■ Packaged in plastic Fine-Pitch Ball Grid Array (FBGA)
Note 1: To ensure the high-impedance state during power up or power
down, OE
should be tied to V
CC
through a pull-up resistor; the minimum
value of the resistor is determined by the current-sourcing capability of the
driver.
Ordering Code:
Note 2: Ordering code “G” indicates Trays.
Note 3: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
Order Number Package Number Package Descriptions
74VCX32374G
(Note 2)(Note 3)
BGA96A 96-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide
www.fairchildsemi.com 2
74VCX32374
Connection Diagram
(Top Thru View)
Pin Descriptions
FBGA Pin Assignments
Truth Tables
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial (HIGH or LOW, inputs may not float)
Z = High Impedance
O
0
= Previous O
0
before HIGH-to-LOW of CP
Pin Names Description
OE
n
Output Enable Input (Active LOW)
CP
n
Clock Pulse Input
I
0
–I
31
Inputs
O
0
–O
31
Outputs
123456
A O
1
O
0
OE
1
CP
1
I
0
I
1
B O
3
O
2
GND GND I
2
I
3
C O
5
O
4
V
CC
V
CC
I
4
I
5
D O
7
O
6
GND GND I
6
I
7
E O
9
O
8
GND GND I
8
I
9
F O
11
O
10
V
CC
V
CC
I
10
I
11
G O
13
O
12
GND GND I
12
I
13
H O
14
O
15
OE
2
CP
2
I
15
I
14
J O
17
O
16
OE
3
CP
3
I
16
I
17
K O
19
O
18
GND GND I
18
I
19
L O
21
O
20
V
CC
V
CC
I
20
I
21
M O
23
O
22
GND GND I
22
I
23
N O
25
O
24
GND GND I
24
I
25
P O
27
O
26
V
CC
V
CC
I
26
I
27
R O
29
O
28
GND GND I
28
I
29
T O
30
O
31
OE
4
CP
4
I
31
I
30
Inputs Outputs Inputs Outputs
CP
1
OE
1
I
0
–I
7
O
0
–O
7
CP
2
OE
2
I
8
–I
15
O
8
–O
15
LHH LHH
LLL LLL
LLXO
0
LLXO
0
XHXZ XHXZ
Inputs Outputs Inputs Outputs
CP
3
OE
3
I
16
–I
23
O
16
–O
23
CP
4
OE
4
I
24
–I
31
O
24
–O
31
LHH LHH
LLL LLL
LLXO
0
LLXO
0
XHXZ XHXZ
3 www.fairchildsemi.com
74VCX32374
Functional Description
The 74VCX32374 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 clock 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 I inputs that
meet the setup and hold time requirements on the
LOW-to-HIGH Clock (CP
n
) transition. With the Output
Enable (OE
n
) LOW, the contents of the flip-flops are avail-
able at the outputs. When OE
n
is HIGH, the outputs go to
the high impedance state. Operations of the OE
n
input
does not affect the state of the flip-flops.
Logic Diagrams
Byte 1 (0:7)
Byte 2 (8:15)
Byte 3 (16:23)
Byte 4 (24:31)
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
P1-P3P4-P6P7-P9

74VCX32374GX

Mfr. #:
Buy 74VCX32374GX
Manufacturer:
ON Semiconductor
Description:
IC FF D-TYPE QUAD 8BIT 96FBGA
Lifecycle:
New from this manufacturer.
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