SN54LS594

The SN54LS594 is a kind of shift register with output latches. The device contains an 8-bit D-type storage register. The storage register has buffered outputs. Seperate clocks and direct-overriding clears are provided on both the shift and storage registers. A shift output of SN54LS594 is provided for cascading purposes. Both the shift register and the storage register clocks are positive-edge triggered.

There are some features of SN54LS594 as follows: (1)8-bit serial-in, parallel-out shift registers with storage; (2)choice of output configurations: buffered; (3)guranteed shif frequency: DC to 20 MHz; (4)independent direct-overriding clears on shift and storage registers; (5)independent clocks for both shift and storage registers.

The following is about the absolute maximum ratings of SN54LS594: (1)supply voltage, VCC: 7 V; (2)input voltage: 7 V; (3)off-state output voltage: 5.5 V; (4)operating free-air temperature range: -55 to +125; (5)storage temperature range: -65 to 150. Then is about the recommended operating conditions: (1)VCC, supply voltage: 4.5 V min, 5 V typ and 5.5 V max; (2)VIH, high level input voltage: 2 V min; (3)VIL, low level input voltage: 0.7 V max.