DG643DY-E3

Analog Switches, Multiplexers, Demultiplexers Overview

The DG643DY-E3 is a video switch integrated circuit manufactured by Vishay Siliconix, housed in a 16-pin SOIC surface-mount package. It features a dual single-pole double-throw (SPDT) configuration with a multiplexer structure. The device operates on a single supply voltage ranging from 10 V to 21 V, with a maximum operating voltage of 15 V and a maximum switch voltage of 8 V. Key electrical parameters include a maximum on-resistance of 15 Ohms, a -3 dB bandwidth of 500 MHz, and a power dissipation of 600 mW. Switching performance is defined by a maximum turn-on time of 70 ns and a maximum turn-off time of 50 ns. The component functions within an ambient temperature range of -40°C to +85°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Dual SPDT video switching architecture optimized for signal routing applications
• High-frequency response capability supporting wideband signal integrity
• CMOS technology enabling low power consumption and TTL/CMOS logic compatibility

Analog Switches, Multiplexers, Demultiplexers Applications

• Video signal routing and distribution systems
• Test and measurement equipment requiring high-speed analog switching
• Data acquisition systems utilizing multiplexer structures

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

This component is designated as End-of-Life (EOL) by the manufacturer. Availability is restricted, and sourcing may require verification through authorized distributors or secondary market channels. Buyers should confirm current stock status and lead times directly with suppliers before placing orders, as standard manufacturing support has ceased.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this part when a dual-channel SPDT video switch with 500 MHz bandwidth is required in a 16-SOIC package. Ensure the design accommodates the 10 V to 21 V single-supply requirement and the 8 V maximum switch voltage limit. Verify that the 15 Ohm on-resistance meets the specific application's signal loss constraints.

Analog Switches, Multiplexers, Demultiplexers Part Context

The DG643 belongs to the Vishay Siliconix DG series of analog switches and multiplexers. This family includes variants such as the DG641 and DG642, which offer different channel counts or configurations. The DG643 specifically provides two independent SPDT switches, distinguishing it from quad-channel alternatives like the DG413 or DG442 within the same product line.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Public documentation lists the DG643DJ-E3 as a recommended alternative, offering identical electrical specifications in a 16-PDIP through-hole package. Designers must evaluate pinout compatibility and thermal management differences between the SOIC and DIP footprints when considering this substitution.