零件编号
74LS191
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Motorola => Freescale
74LS191 数据手册 ( 数据表 ) - Motorola => Freescale
Motorola => Freescale
TheSN54/74LS190 is asynchronous UP/DOWN BCD Decade (8421) Counterand the SN54/74LS191is a synchronous UP/DOWN Modulo-16 BinaryCounter. State changes of the counters are synchronous with the LOW-to-HIGH transition of the Clock Pulse input.
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PRESETTABLE BCD/DECADE UP/DOWN COUNTERS PRESETTABLE 4-BIT BINARY UP/DOWN COUNTERS
Motorola => Freescale
PRESETTABLE BCD/DECADE UP/DOWN COUNTER PRESETTABLE 4-BIT BINARY UP/DOWN COUNTER
Motorola => Freescale
PRESETTABLE BCD/DECADE UP/DOWN COUNTER PRESETTABLE 4-BIT BINARY UP/DOWN COUNTER
ON Semiconductor
PRESETTABLE BCD/DECADE UP/DOWN COUNTER PRESETTABLE 4-BIT BINARY UP/DOWN COUNTER
ON Semiconductor
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