High-Current 3-State Outputs Can Drive Up To 15 LSTTL Loads
Low Power Consumption: 80-µA (Max) ICC
tpd = 13 ns (Typ)
±6-mA Output Drive at 5 V
Low Input Current: 1 µA (Max)
Shift Register Has Direct Clear
Description
The HC595 devices contain 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.
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Inventory
Reported Distributor Inventory as of 11:27 AM GMT, 26 Nov 2009
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