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

(<100?) 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.

特性 Features

? ON Resistance (Max, 25°C). . . . . . . . . . . . . . . . . . . 100?

? 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