Serial Controlled, 8-Channel SPST Switch

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7

• • •

• • •

• • •

• • •

• • •

SCLK

DIN

DOUT

CS

Figure 1. Timing Diagram

D7

D6

D5 D4

MSB

LSB

D3 D2 D1 D0

DATA BITS FROM PREVIOUS DATA INPUT

DOUT POWER-UP DEFAULT: D7–D0 = 0

D6 D5 D4 D3 D2 D1 D0

D7

DOUT

DIN

SCLK

SWITCHES UPDATED

DATA CLOCKED IN

DATA CLOCKED OUT

CS

D7

INPUT DATA BITS

Figure 2. Three-Wire Interface Timing