PI74LPT374
Fast CMOS 3.3V Octal D Flip-Flop
Features
• Compatible with LCX™ and LVT™ families of products
• Supports 5V Tolerant Mixed Signal Mode Operation
– Input can be 3V or 5V
– Output can be 3V or connected to 5V bus
• Advanced Low Power CMOS Operation
• Excellent output drive capability:
Balanced drives (24mA sink and source)
• Low ground bounce outputs
• Hysteresis on all inputs
• Industrial operating temperature range: –40°C to +85°C
• Packaging:
– 20-pin 173-mil wide plastic TSSOP (L)
– 20-pin 150-mil wide plastic QSOP (Q)
– 20-pin 300-mil wide plastic SOIC (S)
Description
Pericom Semiconductor’s PI74LPT374 8-bit wide octal
resisters designed with eight D-type flip-flops, a buffered
common clock, and buffered 3-state outputs. When
output enable (OE) is LOW, the outputs are enabled.
When OE is HIGH, the outputs are in the high impedance state.
Input data meeting the setup and hold time requirements of the
D inputs is transferred to the O outputs on the LOW-to-HIGH
transition of the clock input.
The PI74LPT374 can be driven from either 3.3V or 5.0V devices
allowing for the device to be used as a translator in a mixed
3.3V/5.0V system.
Block Diagram
OE
CP
D
0
Pin Configuration
OE
O0
D0
D1
O1
O2
D2
D3
O3
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
Vcc
O7
D7
D6
O6
O5
D5
D4
O4
CP
D
O
0
CP
TO 7 OTHER CHANNELS
Truth Table
(1)
Inputs
D
N
H
L
X
CP
↑
↑
X
OE
L
L
H
Outputs
O
N
H
L
Z
V
Pin Description
Pin Name
OE
CP
D7-D0
O7-O0
GND
V
CC
Description
Output Enable Input (Active LOW)
Clock Pulse, LOW-to-HIGH Transition
Data Inputs
3-State Outputs
Ground
Power
Note:
1. H = High Voltage Level, X = Don’t Care,
L = Low Voltage Level, Z = High Impedance
1
PS8503A
10/06/04
PERICOM [ PERICOM SEMICONDUCTOR CORPORATION ]
