SN74ACT595BQBR中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

1 Features

? Operating voltage range of 4.5V to 5.5V

? TTL-compatible inputs

? Continuous ±24mA output drive at 5V

? Supports up to ±75mA output drive at 5V

in short bursts

? Drives 50Ω transmission lines

? Fast operation with delay of 11.9ns max

2 Applications

? Increase the number of outputs on a

microcontroller

? Store up to 8 bits of data temporarily

3 Description

The SN74ACT595 device contains an 8-bit, serial-in,

parallel-out shift register that feeds an 8-bit D-type

storage register. The storage register has parallel

outputs. Separate clocks are provided for both the

shift and storage register. The shift register has a

direct overriding clear (SRCLR) input, serial (SER)

input, and a serial output (QH') for cascading. When

the output-enable (OE) input is high, the register

outputs are in a high-impedance state. Internal

register data is not impacted by the operation of the

OE input.