3.5Ω, Single 8:1 and Dual 4:1, Low-Voltage Analog Multiplexers

The MAX4638/MAX4639 are single 8:1 and dual 4:1 CMOS analog multiplexers/demultiplexers (muxes/demuxes). Each mux operates from a single +1.8V to +5V supply or dual ±2.5V supplies. These devices feature 3.5Ω on-resistance (RON) when powered with a single +5V supply and have -75dB off-isolation and -85dB crosstalk from the output to each off channel. The switching times are 18ns tON and 7ns tOFF. They feature a -3dB 85MHz bandwidth and a guaranteed 0.25nA leakage current at +25°C.

A +1.8V to +5.5V operating range makes the MAX4638/MAX4639 ideal for battery-powered, portable instruments. All channels guarantee break-before-make switching. These parts feature bidirectional operation and can handle rail-to-rail analog signals. All control inputs are TTL/CMOS-logic compatible. Decoding is in standard BCD format, and an enable input is provided to simplify cascading of devices. These devices are available in small 16-pin thin QFN, TSSOP, and SO packages, as well as a 20-pin TQFN package.

Applications

* Audio/Video Signal Routing * Automated Test Equipment (ATE) * Battery-Powered Equipment * Low-Voltage Data-Acquisition Systems * Medical Equipment * Relay Replacement

* Guaranteed RON

* 3.5Ω (+5V or ±2.5V Supplies)

* 6Ω (+3V Supply)

* Guaranteed 0.4Ω RON Match Between Channels

* Guaranteed 1Ω RON Flatness Over Signal Range

* Guaranteed Low Leakage Currents

* 0.25nA at +25°C

Switching Times: tON = 18ns, tOFF = 7ns

* +1.8V to +5.5V Single-Supply Operation

* ±2.5V Dual-Supply Operation

* Rail-to-Rail Signal Handling

* TTL/CMOS-Logic Compatible

* Crosstalk: -80dB (1MHz)

* Off-Isolation: -60dB (10MHz)