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1FEATURES

? 8-Bit Serial-In, Parallel-Out Shift

? Wide Operating Voltage Range of 2 V to 6 V

? High-Current 3-State Outputs Can Drive Up To

15 LSTTL Loads

? Low Power Consumption: 80-mA (Max) ICC

? tpd = 13 ns (Typ)

? ±6-mA Output Drive at 5 V

? Low Input Current: 1 mA (Max)

? Shift Register Has Direct Clear

SUPPORTS DEFENSE, AEROSPACE,

AND MEDICAL APPLICATIONS

? Controlled Baseline

? One Assembly/Test Site

? One Fabrication Site

? Available in Military (–55°C/125°C)

Temperature Range(1)

? Extended Product Life Cycle

? Extended Product-Change Notification

? Product Traceability

DESCRIPTION

The SN74HC595 contains an 8-bit serial-in, parallel-out shift register that feeds an 8-bit D-type storage register.

The storage register has parallel 3-state 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 serial outputs for

cascading. When the output-enable (OE) input is high, the outputs are in the high-impedance state.

Both the shift register clock (SRCLK) and storage register clock (RCLK) are positive-edge triggered. If both

clocks are connected together, the shift register always is one clock pulse ahead of the storage register.