CPC7232 Datasheet, PDF (10/13 Pages) Clare, Inc. – 8-Channel High Voltage Analog Switch with Built-in Bleeder Resistors

CPC7232
2.1 Truth Table
D0 D1 D2 D3 D4 D5 D6 D7 LE CL SW0 SW1 SW2 SW3 SW4 SW5 SW6 SW7
L
L L OFF
H
L L ON
L
LL
OFF
H
LL
ON
L
LL
OFF
H
LL
ON
L
LL
OFF
H
LL
ON
L
LL
H
LL
OFF
ON
L
LL
OFF
H
LL
ON
L
LL
OFF
H
LL
ON
L LL
OFF
HLL
ON
X XXX X XXX H L
HOLD PREVIOUS STATE
X X X X X X X X X H OFF OFF OFF OFF OFF OFF OFF OFF
Notes:
1. The eight switches operate independently.
2. Serial data is clocked in on the L? H transition CLK.
3. The switches go to a state retaining their present condition at the rising edge of LE. When LE is low the shift
register data flows through the latch.
4. D_OUT is high when switch 7 is on.
5. Shift register clocking has no effect on the switch states if LE is H.
6. The clear input overrides all other inputs.
2.2 Logic Timing Waveforms
D_N-1
D_N
D_N+1
D
IN
50%
50%
LE
CLK
D
OUT
V OFF
OUT
(TYP) _ON
50%
50%
t
WLE
t
SD
50%
t
SU
t
t
H
DO
50%
t
OFF
90%
50%
t
ON
10%
CL 50%
50%
t_WCL
10
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