The DG408 Single 8-Channel, and DG409 Differential

4-Channel monolithic CMOS analog multiplexers are drop-in

replacements for the popular DG508A and DG509A series

devices. They each include an array of eight analog

switches, a TTL/CMOS compatible digital decode circuit for

channel selection, a voltage reference for logic thresholds

and an ENABLE input for device selection when several

multiplexers are present.

The DG408 and DG409 feature lower signal ON resistance

(<100Ω) and faster switch transition time (tTRANS < 250ns)

compared to the DG508A or DG509A. Charge injection has

been reduced, simplifying sample and hold applications. The

improvements in the DG408 series are made possible by

using a high-voltage silicon-gate process. An epitaxial layer

prevents the latch-up associated with older CMOS

technologies. Power supplies may be single-ended from +5V

to +34V, or split from ±5V to ±20V.

The analog switches are bilateral, equally matched for AC or

bidirectional signals. The ON resistance variation with

analog signals is quite low over a ±5V analog input range.

Features

• ON Resistance (Max, 25°C). . . . . . . . . . . . . . . . . . . 100Ω

• Low Power Consumption (PD) . . . . . . . . . . . . . . .<11mW

• Fast Switching Action

- tTRANS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <250ns

- tON/OFF(EN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . <150ns

• Low Charge Injection

• Upgrade from DG508A/DG509A

• TTL, CMOS Compatible

• Single or Split Supply Operation

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

• Data Acquisition Systems

• Audio Switching Systems

• Automatic Testers

• Hi-Rel Systems

• Sample and Hold Circuits

• Communication Systems

• Analog Selector Switch