Table 7-1 Device Logic Table(1)(2)(3)(4)(5)(6)(7)
| Inputs |
Outputs |
| D0 |
D1 |
... |
D15 |
LE |
CLR |
SW0 |
SW1 |
... |
SW15 |
| 0 |
— |
... |
— |
L |
L |
OFF |
— |
... |
— |
| 1 |
— |
— |
L |
L |
ON |
— |
— |
| — |
0 |
— |
L |
L |
— |
OFF |
— |
| — |
1 |
— |
L |
L |
— |
ON |
— |
| — |
— |
— |
L |
L |
— |
— |
— |
| — |
— |
— |
L |
L |
— |
— |
— |
| — |
— |
0 |
L |
L |
— |
— |
OFF |
| — |
— |
1 |
L |
L |
— |
— |
ON |
| X |
X |
X |
X |
H |
L |
HOLD PREVIOUS
STATE |
| X |
X |
X |
X |
X |
H |
OFF |
OFF |
OFF |
OFF |
(1) All 16 switches operate independently.
(2) Serial data is clocked in on the rising edge of CLK. Data is shifted in on
the DIN pin with the most-significant bit (MSB) first.
(3) The switches go to a state of retaining their present state on the rising
edge of the LE pin. Once the LE pin is high,
updates to the shift register no longer change the condition of the 16 switches until the
LE pin is made low again. When the LE is low,
the shift register data flows through the latch.
(4) Shift register clocking has no effect on the switch states if the
LE pin is high.
(5) DOUT is the data output pin of the 16 bit shift register for daisy chaining
multiple muxes together. It is the data of the DIN clock shifted by the 16 clock
cycles.
(6) The CLR input overrides all other inputs.
(7) While LE = H or CLR = H, if the CLK pin still receiving
a valid clock signal, DIN will still function and input data into the shift register, and
DOUT will still output the contents on the shift register. However, while
LE = H or CLR = H, the state of the analog switches is no longer
dependent on the contents of the shift register, but rather takes the state per this logic
table.