The Operating Mode Table and the
Output Function Table list
the functional modes of the SN74HCT165.
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.