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.