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PI74LPT573

Description
Fast CMOS 3.3V 8-Bit Transparent Latch
File Size32KB,4 Pages
ManufacturerPericom Semiconductor Corporation (Diodes Incorporated)
Websitehttps://www.diodes.com/
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PI74LPT573 Overview

Fast CMOS 3.3V 8-Bit Transparent Latch

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21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74LPT573
Fast CMOS 3.3V 8-Bit
Transparent Latch
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 (24 mA sink and source)
• Low ground bounce outputs
• Hysteresis on all inputs
• Industrial operating temperature range: –40°C to +85°C
• Packages available:
– 20-pin 173 mil wide plastic TSSOP (L)
– 20-pin 150 mil wide plastic QSOP (Q)
– 20-pin 150 mil wide plastic TQSOP (R)
– 20-pin 300 mil wide plastic SOIC (S)
Description
Pericom Semiconductor’s PI74LPT series of logic circuits are pro-
duced in the Company’s advanced 0.6 micron CMOS technology,
achieving industry leading speed grades.
The PI74LPT573 is an 8-bit transparent latch designed with
3-state outputs and is intended for bus oriented applications. When
Latch Enable (LE) is HIGH, the flip-flops appear transparent to the
data. The data that meets the set-up time when LE is LOW is latched.
When OE is HIGH, the bus output is in the high impedance state.
The PI74LPT573 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.
Logic Block Diagram
Pinout
OE
LE
D
0
D
O
G
O
0
OE
D0
D1
D2
D3
D4
D5
D6
D7
GND
20
1
19
2
18
3
20-Pin
17
4
L20
16
5
R20
15
6
Q20
7
S20
14
13
8
12
9
11
10
Vcc
O0
O1
O2
O3
O4
O5
O6
O7
LE
TO 7 OTHER CHANNELS
Truth Table
D
N
H
L
X
Inputs
(1)
LE
H
H
X
OE
L
L
H
Outputs
(1)
O
N
H
L
Z
Pin Description
Pin Name
OE
LE
D7-D0
O7-O0
GND
V
CC
Description
Output Enable Input (Active LOW)
Latch Enable Input (Active HIGH)
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
PS2063A 01/15/97

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