Overview

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.

DG408_DG409 Functional Diagram
DG408_DG409 Functional Diagram
  • 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

Documentation

Design & Development

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

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Diagram of ECAD Models

Product Options

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    Price (USD) | 1ku
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    Part Number
    5962-9204201MEA
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    		 CERDIP Tube Not Applicable Get Samples,
    DG408DJZ
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    		PDIP Tube Not Applicable Get Samples,
    DG408DVZ
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    Samples Available
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    		TSSOP Tube 1 Get Samples,
    DG408DVZ-T
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    		TSSOP Reel 1 1.826
    DG408DYZ
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    		SOICN Tube 2 1.783 Get Samples,
    DG408DYZ-T
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    		SOICN Reel 2
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