6-BIT, 1-of-2 MULTIPLEXER/DEMULTIPLEXER WITH INTEGRATED IEC L-4 ESD

AND 1.8V LOGIC COMPATIBLE CONTROL INPUTS

DESCRIPTION

The UTC UMDM27518 is a 6-bit 1-of-2 high-speed multiplexer/

demultiplexer operating from 1.65V to 3.6V. Both digital and analog

signals can be handled, and signals up to V+ can be transmitted in

either direction.

The UTC UMDM27518 has two control pins working separately,

each controlling three 1-of-2 multiplexers at the same time. One

enable pin is used to put all outputs in high-impedance mode. The

control pins are compatible with 1.8V logic thresholds and are

backward compatible with 2.5V and 3.3V logic thresholds as well.

The UTC UMDM27518 allows any SD, SDIO, and multimedia card

host controllers to be expanded out to multiple cards or peripherals

since the SDIO interface consists of 6-bits: CMD, CLK, and Data [0:3]

signals. The UTC UMDM27518 has two control pins that give

additional flexibility to the user. For example, the ability to mux two

different audio-video signals in equipment such as an LCD television,

an LCD monitor, or a notebook docking station.

FEATURES

* 1.65V~3.6V Single-Supply Operation

* Bandwidth up to 240MHz for High-Speed Rail-to-Rail Signal Handling

* Low Capacitance Switches, 21.5pF (Typical)

* Isolation in Powerdown Mode, V+=0

* 1.8V Logic Threshold Compatibility for Control Inputs

* 3.6V Tolerant Control Inputs

* Crosstalk and Off Isolation of -62dB