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.