FEATURES

? Halogen-free according to IEC 61249-2-21

Definition

? Low RDS(on): 55 ?

? Low Charge Injection: 1 pC

? On-Board TTL Compatible Address Latches

? High Speed - tTRANS: 160 ns

? Break-Before-Make

? Low Power Consumption: 0.3 mW

? Compliant to RoHS Directive 2002/95/EC

BENEFITS

? Improved System Accuracy

? Microprocessor Bus Compatible

? Easily Interfaced

? Reduced Crosstalk

? High Throughput

? Improved Reliability

APPLICATIONS

? Data Acquisition Systems

? Automatic Test Equipment

? Avionics and Military Systems

? Communication Systems

? Microprocessor-Controlled Analog Systems

? Medical Instrumentation

DESCRIPTION

The DG428, DG429 analog multiplexers have on-chip

address and control latches to simplify design in

microprocessor based applications. Break-before-make

switching action protects against momentary crosstalk of

adjacent input signals.

The DG428 selects one of eight single-ended inputs to a

common output, while the DG429 selects one of four

differential inputs to a common differential output.

An on channel conducts current equally well in both

directions. In the off state each channel blocks voltages up to

the power supply rails. An enable (EN) function allows the

user to reset the multiplexer/demultiplexer to all switches off

for stacking several devices. All control inputs, address (Ax)

and enable (EN) are TTL compatible over the full specified

operating temperature range.

The silicon-gate CMOS process enables operation over a

wide range of supply voltages. The absolute maximum

voltage rating is extended to 44 V. Additionally, single supply

operation is also allowed and an epitaxial layer prevents

latchup.

On-board TTL-compatible address latches simplify the digital

interface design and reduce board space in bus-controlled

systems such as data acquisition systems, process controls,

avionics, and ATE.