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PI74FCT3573S

更新时间: 2024-11-15 23:27:47
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页数 文件大小 规格书
4页 167K
描述
8-Bit D-Type Latch

PI74FCT3573S 数据手册

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PI74FCT3573  
Fast CMOS 3.3V 8-Bit  
Transparent Latch  
Features  
Description  
• Advanced Low Power CMOS Operation  
Pericom Semiconductor’s PI74FCT3 series of logic circuits are  
producedintheCompany’sadvanced0.6micronCMOStechnology,  
achieving industry leading speed grades.  
• Compatible with LVC class of products  
• Compatible with industry standard octal pinouts  
The PI74FCT3573 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.  
• Excellent output drive capability:  
Balanced drives (24 mA sink and source)  
• Can serve as a 5V to 3V translator  
• Inputs can be driven by 3.3V or 5V devices  
• Low ground bounce outputs  
• Hysteresis on all inputs  
The PI74FCT3573 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.  
• Industrial operating temperature range: –40°C to +85°C  
• Packages available:  
– 20-pin 173 mil wide plastic TSSOP (L20)  
– 20-pin 150 mil wide plastic QSOP (Q20)  
– 20-pin 150 mil wide plastic TQSOP (R20)  
– 20-pin 300 mil wide plastic SOIC (S20)  
Pinout  
Logic Block Diagram  
OE  
LE  
20 Vcc  
19 O0  
18 O1  
17 O2  
16 O3  
15 O4  
14 O5  
13 O6  
12 O7  
11 LE  
OE  
D0  
D1  
D2  
D3  
D4  
D5  
D6  
D7  
1
2
3
4
5
6
7
8
9
20-Pin  
L20  
R20  
Q20  
S20  
D0  
D
G
O
0
O
GND 10  
TO 7 OTHER CHANNELS  
Truth Table  
Pin Description  
Inputs(1)  
Outputs(1)  
Pin Name  
OE  
Description  
DN  
H
LE  
H
OE  
L
ON  
H
Output Enable Input (Active LOW)  
Latch Enable Input (Active HIGH)  
Data Inputs  
LE  
L
H
L
L
D7-D0  
O7-O0  
GND  
VCC  
X
X
H
Z
3-State Outputs  
Ground  
Note:  
1. H = High Voltage Level  
Power  
X = Don’t Care  
L = Low Voltage Level  
Z = High Impedance  
PS8121A  
07/21/97  
1

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