DESCRIPTION
The LTC®1390 is a high performance CMOS 8-to-1 analog multiplexer. It features a 3-wire digital interface with a bidirectional data retransmission feature, allowing it to be wired in series with a serial A/D converter while using only one serial port. The interface also allows several LTC1390s to be wired in series or parallel, increasing the number of MUX channels available using only a single digital port. All the above features are also valid when LTC1390 operates as a demultiplexer such as with a D/A converter.

FEATURES
■ 3-Wire Serial Digital Interface
■ Data Retransmission Allows Series Connection with Serial A/D Converters
■ Single 3V to ±5V Supply Operation
■ Analog Inputs May Extend to Supply Rails
■ Low Charge Injection
■ Low RON: 75Ω Max
■ Low Leakage: ±5nA Max
■ Guaranteed Break-Before-Make
■ TTL/CMOS Compatible for All Digital Inputs
■ Cascadable to Allow Additional Channels
■ Can Be Used as a Demultiplexer

APPLICATIONS
■ Data Acquisition Systems
■ Communication Systems
■ Signal Multiplexing/Demultiplexing