LTC1391

PRODUCTION

8-Channel Analog Multiplexer with Cascadable Serial Interface

Analog Devices LTC1391 Product Info

10 February 2026 7

Features

Low R_ON: 45Ω
Single 2.7V to ±5V Supply Operation
Low Charge Injection
Serial Digital Interface
Analog Inputs May Extend to Supply Rails
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

Part details & applications

The LTC1391 is a high performance CMOS 8-to-1 analog multiplexer. It features a serial digital interface that allows several LTC1391s to be daisy-chained together, increasing the number of MUX channels available using a single digital port.

The LTC1391 features a typical R_ON of 45Ω, a typical switch leakage of 50pA and guaranteed break-beforemake operation. Charge injection is ±10pC maximum. All digital inputs are TTL and CMOS compatible when operated from single or dual supplies. The inputs can withstand 100mA fault current.

The LTC1391 is available in 16-pin PDIP, SSOP and narrow SO packages. For applications requiring 2-way serial data transmission, see the LTC1390 data sheet.

Applications

Data Acquisition Systems
Communication Systems
Signal Multiplexing/Demultiplexing

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