M74HC691 数据手册 ( 数据表 )
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STMicroelectronics
HC691/693 4 BIT BINARY COUNTER/REGISTER (3-STATE) HC690/692 DECADE COUNTER/REGISTER (3-STATE)
STMicroelectronics
HC691/693 4 BIT BINARY COUNTER/REGISTER (3-STATE) HC690/692 DECADE COUNTER/REGISTER (3-STATE)
STMicroelectronics
HC691/693 4 BIT BINARY COUNTER/REGISTER (3-STATE) HC690/692 DECADE COUNTER/REGISTER (3-STATE)
STMicroelectronics
HC691/693 4 BIT BINARY COUNTER/REGISTER (3-STATE) HC690/692 DECADE COUNTER/REGISTER (3-STATE)
STMicroelectronics
HC691/693 4 BIT BINARY COUNTER/REGISTER (3-STATE) HC690/692 DECADE COUNTER/REGISTER (3-STATE)
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