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General Description

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 TQFN, TSSOP, and SO packages, as well as a 20-pin TQFN package.

Features

? 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)

Applications

?? Automatic Test Equipment

?? Low-Voltage Data-Acquisition Systems

?? Audio and Video Signal Routing

?? Medical Equipment

?? Battery-Powered Equipment

?? Relay Replacement