DG408, DG409

Improved, 8-Channel/Dual 4-Channel, CMOS Analog Multiplexers

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Status Explanations for product status codes

Part Number Status
DG408 Active: In Production.
DG409 Active: In Production.


Maxim's redesigned DG408 and DG409 CMOS analog multiplexers now feature guaranteed matching between channels (8Ω max) and flatness over the specified signal range (9Ω max). These low on-resistance muxes (100Ω max) conduct equally well in either direction and feature guaranteed low charge injection (15pC max). In addition, these new muxes offer low input off-leakage current over temperatureµless than 5nA at +85°C.

The DG408 is a 1-of-8 multiplexer/demultiplexer and the DG409 is a dual 4-channel multiplexer/demultiplexer. Both muxes operate with a +5V to +30V single supply and with ±5V to ±20V dual supplies. ESD protection is guaranteed to be greater than 2000V per Method 3015.7 of MIL-STD-883. These improved muxes are pin-compatible plug-in upgrades for the industry standard DG408 and DG409.

Data Sheet

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Key Features

  • Pin-Compatible Plug-In Upgrades for Industry Standard DG408/DG409
  • Guaranteed Matching Between Channels, 8Ω Max
  • Guaranteed On-Resistance Flatness, 9Ω Max
  • Guaranteed Low Charge Injection, 15pC Max
  • Low On-Resistance, 100Ω Max
  • Input Leakage, 5nA Max at +85°C
  • Low Power Consumption, 1.25mW Max
  • Rail-to-Rail Signal Handling
  • Digital Input Controls TTL/CMOS Compatible
  • ESD Protection > 2000V per Method 3015.7


  • Audio-Signal Routing
  • Communication Systems
  • Data Acquisition
  • Guidance and Control Systems
  • Sample-and-Hold Circuits
  • Test Equipment

Key Specifications:

Switches and Multiplexers (Mid and High Voltage)
Part Number Functions Config. Channels VSUPPLY (Single)
VSUPPLY (Single)
min max min max max max min max See Notes
DG408  Mux 8-to-1 1 4.5 30 4.5 20 100 1 150 150 15 37 3 $3.30 @1k
DG409  4-to-1 2 25 $2.69 @1k
See All Switches and Multiplexers (Mid and High Voltage) (312)

Pricing Notes:

This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


DG408, DG409: Functional Diagram
Functional Diagram

Notes and Comments

Industry standard

More Information

New Product Press Release   2008-11-25 ]

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Document Ref.: 19-4725 Rev 4; 2009-01-15
This page last modified: 2009-07-28