Table 8-1 and Table 8-2 list the functional modes of the SN74HC165B-EP.
Table 8-1 Operating Mode Table| INPUTS(1) | FUNCTION |
|---|
| SH/LD | CLK | CLK INH |
|---|
| L | X | X | Parallel load |
| H | H | X | No change |
| H | X | H | No change |
| H | L | ↑ | Shift(2) |
| H | ↑ | L | Shift(2) |
(1) H = High Voltage Level, L = Low Voltage Level, X = Do Not Care, ↑ = Low to High transition
(2) Shift: content of each internal register shifts towards serial output QH. Data at SER is shifted into the first register.
Table 8-2 Output Function Table| INTERNAL REGISTERS(1)(2) | OUTPUTS(2) |
|---|
| A — G | H | Q | Q |
|---|
| X | L | L | H |
| X | H | H | L |
(1) Internal registers refer to the shift registers inside the device. These values are set by either loading data from the parallel inputs, or by clocking data in from the serial input.
(2) H = High Voltage Level, L = Low Voltage Level, X = Do Not Care