DG485DJ

Analog Switches, Multiplexers, Demultiplexers Overview

The DG485DJ is an octal analog switch array manufactured by Vishay Siliconix, housed in an 18-pin Plastic DIP package. It integrates eight SPST switches connected to a common output and features a serial interface with shift register and latch control. The device supports a wide power supply range up to 44 V and operates within a temperature range of -40°C to +85°C. Key electrical parameters include a typical on-resistance of 55 Ω, a maximum turn-on time of 275 ns, and a maximum power dissipation of 470 mW.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Serial control architecture utilizing shift registers and latches for efficient pin usage
• Rail-to-rail analog input signal handling capability
• Daisy-chainable serial data output for system expansion
• TTL and CMOS logic compatibility

Analog Switches, Multiplexers, Demultiplexers Applications

• Audio switching and routing systems
• Data acquisition and industrial process control
• Battery powered remote systems
• Automotive, avionics and ATE systems

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix 'DJ' corresponds to the 18-pin Plastic DIP package and the commercial temperature grade (-40°C to +85°C). Confirm that the component meets RoHS requirements if applicable to the project specifications. Ensure the design accounts for the specified power dissipation limits and derating curves provided in the datasheet.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a high channel count is required with minimal control pins. The serial interface reduces board space compared to parallel controlled switches. Verify that the 55 Ω on-resistance and 275 ns switching speed meet the application's signal integrity and timing requirements.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the DG485 series of octal analog switch arrays from Vishay Siliconix. The 'DJ' designation specifically identifies the 18-pin Plastic DIP variant suitable for through-hole mounting. Other variants in the family include the PLCC package (DG485DN) and military-grade LCC options.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct replacements must maintain the octal SPST configuration and serial interface. Check for compatible packages such as the DG485DN (PLCC-20) or verify if alternative manufacturers offer functionally equivalent octal serial-controlled analog switches.