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PI74FCT648ATP

更新时间： 2024-11-05 23:27:51
品牌 Logo 应用领域
其他 - ETC 总线收发器
页数 文件大小 规格书
7页 236K
描述
Single 8-Bit Inverting Bus Transceiver

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PI74FCT648ATP 数据手册

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PI74FCT646T/648T/651T/652T  
(25Ω Series PI74FCT2646T/2652T  
Fast CMOS Octal Registered Transceivers  
ProductDescription  
ProductFeatures  
Pericom Semiconductor’s PI74FCT series of logic circuits are  
produced using the Company’s advanced 0.6/0.8 micron CMOS  
technology, achieving industry leading speed grades. All  
PI74FCT2XXXdeviceshaveabuilt-in25-ohmseriesresistoronall  
outputs to reduce noise because of reflections, thus eliminating the  
need for an external terminating resistor.  
• PI74FCT646T/648T/651T/652T/2646T/2652Tispincompatible  
with bipolar FAST™ Series at a higher speed and lower power  
consumption  
• 25Ω series resistor on all outputs (FCT2XXX only)  
• TTL input and output levels  
• Low ground bounce outputs  
• Extremelylowstaticpower  
• Hysteresis on all inputs  
• Industrial operating temperature range: –40°C to +85°C  
• Packagesavailable:  
– 24-pin300milwideplasticDIP(P)  
– 24-pin150milwideplasticQSOP(Q)  
– 24-pin150milwideplasticTQSOP(R)  
– 24-pin300milwideplasticSOIC(S)  
• Device models available upon request  
ThePI74FCT646T/648T/651T/652TandPI74FCT2646T/2652Tare  
designed with a bus transceiver with 3-state D-type flip-flops and  
control circuitry arranged for multiplexed transmission of data  
directly from the data bus or from the internal storage registers. The  
PI74FCT651/652T/2652TutilizeGABandGBAsignalstocontrolthe  
transceiverfunctions.ThePI74FCT646/2646T/648Tusetheenable  
control (G) and direction pins (DIR) to control the transceiver  
functions. SAB and SBA control pins are used to select either real-  
timeorstoreddatatransfer.Thecircuitryusedforselectcontrolwill  
eliminate the typical decoding glitch that occurs in a multiplexer  
duringthetransitionbetweenreal-timeandstoreddata. Alowinput  
level selects real-time data and a high selects stored data.  
The PI74FCT646T is a non-inverting option of the PI74FCT648T.  
ThePI74FCT652Tisanon-invertingoptionofthePI74FCT651T.  
Logic Block Diagram  
PI74FCT651/652 ONLY  
GBA  
GAB  
PI74FCT646/648  
ONLY  
G
DIR  
CPBA  
SBA  
CPAB  
SAB  
B REG  
0D  
1 OR 8 CHANNELS  
C0  
B
0
A REG  
0D  
A
0
PI74FCT651/652 ONLY  
646/652  
ONLY  
C0  
646/652  
ONLY  
TO 7 OTHER CHANNELS  
PS2022A 03/11/96  
1
1234567

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