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PI74FCT3245Q

更新时间： 2024-11-15 23:27:47
品牌 Logo 应用领域
其他 - ETC 总线收发器
页数 文件大小 规格书
4页 173K
描述
Single 8-bit Bus Transceiver

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中文翻译

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PI74FCT3245Q 数据手册

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PI74FCT3245  
Fast CMOS 3.3V 8-Bit  
Bidirectional Transceiver  
Product Features  
Product Description  
Pericom Semiconductor’s PI74FCT3 series of logic circuits are  
produced in the Company’s advanced 0.6 micron CMOS  
technology, achieving industry leading speed grades.  
• Advanced Low Power CMOS Operation  
• Compatible with LVC class of products  
• Compatible with industry standard  
octal pinouts  
• 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  
The PI74FCT3245 is an 8-bit bidirectional transceiver designed  
for asynchronous two-way communication between data buses.  
The transmit/receive input pin (T/R) determines the direction of  
data flow through the bidirectional transceiver. Transmit (active  
HIGH) enables data from A ports to B ports, and receive (active  
LOW)fromBportstoAports. Theoutputenable(OE)input, when  
HIGH, disables both A and B ports by placing them in HIGH Z  
condition.  
• Hysteresis on all inputs  
• Industrial operating temperature range:  
-40 C to +85 C  
The PI74FCT3245 can be driven from either 3.3V or 5.0V devices  
allowing this device to be used as a translator in a mixed  
3.3V/5.0V system.  
• Packages available:  
-20-pin173milwideplasticTSSOP(L)  
-20-pin150milwideplasticQSOP(Q)  
-20-pin150milwideplasticTQSOP(R)  
-20-pin300milwideplasticSOIC(S)  
ProductPinConfiguration  
Product Pin Description  
Logic Block Diagram  
Pin Name  
Description  
T/  
20 VCC  
19 OE  
18 B0  
17 B1  
16 B2  
15 B3  
14 B4  
13 B5  
12 B6  
11 B7  
T/R  
A0  
A1  
A2  
A3  
A4  
A5  
A6  
A7  
1
2
3
4
5
6
7
8
9
OE  
3-State Output Enable  
Inputs (Active LOW)  
OE  
20-PIN  
L20  
Q20  
R20  
S20  
T/R  
Direction Control Input  
A0  
B0  
A1  
B1  
A2  
B2  
A3  
B3  
A4  
B4  
1A5  
B5  
A6  
B6  
A7  
B7  
A7-A0  
Side A Inputs or  
3-State Outputs  
B7-B0  
Side B Inputs or  
3-State Outputs  
GND  
Ground  
Power  
GND 10  
VCC  
Truth Table  
Inputs(1)  
OE  
L
T/R  
Outputs(1)  
Bus B Data to Bus A  
Bus A Data to Bus B  
High StateZ  
L
H
X
L
H
Note:  
1. H = High Voltage Level, X = Don't Care,  
L = Low Voltage Level, Z = High Impedance  
PS7068C 8/22/97  
1
1234

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