HD74LS221RP   数据手册 ( 数据表 )

Renesas Electronics

Dual Monostable Multivibrators

Renesas Electronics

Dual Monostable Multivibrators

Hitachi -> Renesas Electronics

Octal Bus Tranceivers (with three state outputs)

Renesas Electronics

8-bit Address Latch

Hitachi -> Renesas Electronics

BCD-to-Seven-Segment Decoders/Drivers (internal pull-up outputs)

Hitachi -> Renesas Electronics

Quadruple Bus Transceivers (with three-state outputs)

Hitachi -> Renesas Electronics

Quadruple 2-line-to-1-line Data Selectors/Multiplexers(with non inverted 3-state outputs)

Hitachi -> Renesas Electronics

Octal Buffers/Line Drivers/Line Receivers (inverted three-state outputs)

Hitachi -> Renesas Electronics

Quadruple 2-line-to-1-line Data Selectors/Multiplexers(with three-state outputs)

Renesas Electronics

Quadruple S-R Latches

Hitachi -> Renesas Electronics

Octal Buffers/Line Drivers/Line Receivers