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PI74FCT2543T

更新时间： 2024-09-29 06:03:11
品牌 Logo 应用领域
百利通 - PERICOM /
页数 文件大小 规格书
5页 88K
描述
Fast CMOS Latched Transceivers

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PI74FCT2543T 数据手册

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PI74FCT543T/544T  
(25Ω Series) PI74FCT2543T  
Fast CMOS  
Latched Transceivers  
Product Features:  
Product Description:  
• PI74FCT543T/544/2543Tispincompatiblewithbipolar  
FAST™ Series at a higher speed and lower power  
consumption  
• 25Ω series resistor on all outputs  
• TTL input and output levels  
Pericom Semiconductor’s PI74FCT series of logic circuits are  
produced in the Company’s advanced 0.8 micron CMOS  
technology, achieving industry leading speed grades. All  
PI74FCT2XXX devices have a built-in 25 ohm series resistor on  
all outputs to reduce noise because of reflections, thus eliminating  
the need for an external terminating resistor.  
• Low ground bounce outputs  
• Extremely low static power  
The PI74FCT543T/544T and PI74FCT2543T is an 8-bit wide  
non-inverting transceiver designed with two sets of eight D-type  
latches with separate input and output controls for each set. For  
data flow from A to B, for example, the A-to-B Enable (CEAB)  
input must be LOW in order to enter data from A0–A7 or to take  
data from B0–B7, as indicated in the Truth Table. With CEAB  
LOW, a LOW signal makes the A-to-B latches transparent; a  
subsequent LOW-to-HIGH transition of the LEAB signal puts the  
A latches in the storage mode and their outputs no longer change  
the A inputs. With CEAB and OEAB both LOW, the 3-state B  
output buffers are active and reflect the data present at the output  
of the A latches. Control of data from B to A is similar, but uses the  
CEAB, LEAB, and OEAB inputs. The PI74FCT543T is a non-  
inverting of the PI74FCT544T.  
• Hysteresis on all inputs  
• Industrial operating temperature range: –40°C to +85°C  
• Packages available:  
– 24-pin300milwideplasticDIP(P)  
– 24-pin150milwideplasticQSOP(Q)  
– 24-pin150milwideplasticTQSOP(R)  
– 24-pin300milwideplasticSOIC(S)  
• Device models available on request  
PI74FCT543/544/2543T Logic Block Diagram  
DETAIL A  
D
Q
B
0
LE  
A0  
Q
D
LE  
A
1
2
3
4
5
6
7
B
B
B
B
B
B
B
1
2
3
4
5
6
7
A
A
A
A
A
A
DETAIL A x 7  
OEBA  
OEAB  
CEBA  
LEBA  
CEAB  
LEAB  
NOTE: PI74FCT543/2543T function is shown.  
PS2020A 03/11/96  
1
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