The LTC1391 is a high performance CMOS 8-channel analog multiplexer with a cascading serial interface, allowing multiple LTC1391s to be connected together to increase the number of MUX channels using a single digital port.
The LTC1391 is a high‑performance CMOS 8‑to‑1 analog multiplexer that can be cascaded via a serial digital interface, allowing multiple devices to share a single data line. It operates from a single 2.7 V to +5 V supply and features low on‑resistance (typical 45 Ω), low charge injection (+10 pC max) and low leakage (+5 nA max).\n\nTypical applications include data‑acquisition systems, communication systems and signal multiplexing/demultiplexing. The device is available in 16‑lead PDIP, SSOP and narrow‑SO packages, and can be daisy‑chained to expand channel count without additional interface ports.
| On‑Resistance (typical) | 45 Ω |
|---|---|
| Leakage Current (max) | +5 nA |
| Supply Voltage Range | 2.7 V to +5 V |
| Clock Frequency | 5 MHz |
| Break‑Before‑Make Interval | 35 ns (typical) |
The typical on‑resistance is 45 Ω.
It provides an 8‑channel analog multiplexer.
It operates from a single 2.7 V to +5 V supply.
Yes, they can be daisy‑chained to expand the number of channels.