The Operating Mode Table and the Output Function Table list the functional modes of the SN74HCS16507-Q1.
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 = Don't 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 |
Z |
X |
H |
Z |
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 = Don't Care, Z = High
Impedance