DG643DY

Description：IC SWITCH SPDT X 2 15OHM 16SOIC
Series：-

SKU:82a26ef40761 Category: Analog Switches, Multiplexers, Demultiplexers Brand: Vishay Siliconix

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Product introduction

Product Detailed Parameters

Description：IC SWITCH SPDT X 2 15OHM 16SOIC
Series：-
Mfr：Vishay Siliconix
Package：Tube
Switch Circuit：SPDT
Multiplexer/Demultiplexer Circuit：2:01
On-State Resistance (Max)：15Ohm
Channel-to-Channel Matching (ΔRon)：1Ohm
Voltage - Supply, Single (V+)：3V ~ 15V
Voltage - Supply, Dual (V±)：±3V ~ 15V
Switch Time (Ton, Toff) (Max)：70ns, 50ns
-3db Bandwidth：500MHz
Charge Injection：19pC
Channel Capacitance (CS(off), CD(off))：12pF, 12pF
Current - Leakage (IS(off)) (Max)：10nA
Crosstalk：-87dB @ 5MHz
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：16-SOIC (0.154", 3.90mm Width)
Supplier Device Package：16-SOIC
Number of Circuits：2
Grade：-
Qualification：-

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DG643DY

Overview

The DG643DY is a dual single-pole double-throw (SPDT) video switch IC manufactured by Vishay Siliconix in a 16-pin narrow SOIC package. It features a wide bandwidth of 500 MHz and low on-resistance with a maximum value of 15 Ohms. The device supports operation from a single supply voltage ranging from 10 V to 21 V, or dual supplies up to ±15 V. Key dynamic characteristics include a maximum turn-on time of 70 ns and a maximum turn-off time of 50 ns. It operates within a temperature range of -40 °C to +85 °C and offers high off-isolation.

Feature Summary

Dual SPDT configuration for efficient signal routing
Wideband performance suitable for high-frequency analog signals
TTL logic compatible control inputs
Fast switching speeds with minimal insertion loss

Applications

RF and video switching systems
RGB signal switching
Video routing infrastructure
Programmable filter applications

Procurement Notes

Verify the specific ordering suffix against current manufacturer documentation to confirm package type and environmental compliance. Confirm availability status as distribution channels may vary. Ensure the selected component matches the required pinout and thermal specifications for the target PCB layout.

Selection Notes

Select this component when a dual-channel SPDT topology is required for video or RF applications. Verify that the 15 Ohm maximum on-resistance meets system insertion loss requirements. Ensure the power supply architecture supports the specified voltage ranges and that decoupling capacitors are placed close to the V+ and V- pins to maintain stability.

Part Context

The DG643DY belongs to the DG641/DG642/DG643 series of low on-resistance wideband video switches. While the DG641 provides four SPST channels and the DG642 offers a single SPDT channel, the DG643 specifically integrates two independent SPDT switches into one monolithic die, optimizing board space for multi-channel routing tasks.