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DG642DY-T1
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Product Detailed Parameters
- Description：IC SWITCH SPDT X 1 8OHM 8SOIC
- Series：-
- Mfr：Vishay Siliconix
- Package：Tape & Reel (TR)
- Switch Circuit：SPDT
- Multiplexer/Demultiplexer Circuit：2:01
- On-State Resistance (Max)：8Ohm
- Channel-to-Channel Matching (ΔRon)：500mOhm
- Voltage - Supply, Single (V+)：3V ~ 15V
- Voltage - Supply, Dual (V±)：±3V ~ 15V
- Switch Time (Ton, Toff) (Max)：100ns, 60ns
- -3db Bandwidth：500MHz
- Charge Injection：40pC
- Channel Capacitance (CS(off), CD(off))：20pF, 20pF
- Current - Leakage (IS(off)) (Max)：10nA
- Crosstalk：-85dB @ 5MHz
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Number of Circuits：1
- Grade：-
- Qualification：-
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Overview
The DG642DY-T1-E3 is a single-pole double-throw (SPDT) video switch integrated circuit manufactured by Vishay Siliconix. It operates on a single supply voltage ranging from 10 V to 21 V, with a typical operating voltage of 15 V. The device features a maximum on-resistance of 8 Ohms and supports a bandwidth of 500 MHz. Switching performance includes a maximum turn-on time of 100 ns and a maximum turn-off time of 60 ns. It provides typical off-isolation of -63 dB and dissipates up to 300 mW of power. The component functions within an ambient temperature range of -40°C to +85°C and is housed in an SOIC-8 surface-mount package.
Feature Summary
- Single SPDT configuration designed for video signal routing applications
- High-speed switching capability with 500 MHz bandwidth
- Low on-resistance for minimal signal attenuation
- Operates on a single positive supply voltage
Applications
- Video signal switching and routing
- Test and measurement equipment signal paths
- Data acquisition systems requiring analog switching
Procurement Notes
Verify the complete part number including suffixes such as -E3 for lead-free compliance when sourcing. Confirm availability status as distribution listings may indicate discontinued or limited stock conditions. Ensure the supplier provides official datasheets matching the specific manufacturing lot and revision. Cross-reference the manufacturer code to confirm authenticity from Vishay Siliconix.
Selection Notes
Select this component when a single-channel SPDT switch with high bandwidth is required. The 8 Ohm on-resistance suits applications where low insertion loss is critical. Verify that the system power supply falls within the 10 V to 21 V range. Consider the SOIC-8 package dimensions for PCB layout constraints compared to other pin-compatible alternatives in the DG series.
Part Context
This device belongs to the DG series of video switches from Vishay Siliconix. It shares functional similarities with other SPDT switches in the lineup but is distinguished by its specific 500 MHz bandwidth and 8 Ohm on-resistance characteristics. The part is often referenced alongside legacy discrete video switching solutions.
Replacement Considerations
Public documentation lists the DG61 as a recommended alternative. Verify pinout compatibility and electrical parameter alignment before substitution. Other members of the DG family may offer different channel counts or resistance values.
