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DG418LDY
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Product Detailed Parameters
- Description：IC SWITCH SPST-NOX1 20OHM 8SOIC
- Series：-
- Mfr：Vishay Siliconix
- Package：Tube
- Switch Circuit：SPST - NO
- Multiplexer/Demultiplexer Circuit：1:01
- On-State Resistance (Max)：20Ohm
- Channel-to-Channel Matching (ΔRon)：-
- Voltage - Supply, Single (V+)：2.7V ~ 12V
- Voltage - Supply, Dual (V±)：±3V ~ 6V
- Switch Time (Ton, Toff) (Max)：43ns, 31ns
- -3db Bandwidth：-
- Charge Injection：1pC
- Channel Capacitance (CS(off), CD(off))：5pF
- Current - Leakage (IS(off)) (Max)：1nA
- Crosstalk：-71dB @ 1MHz
- 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 DG418LDY is a single-channel SPST analog switch IC manufactured by Vishay Siliconix. It operates within a dual supply voltage range of ±15 V and supports single supply configurations. The device features a maximum on-resistance of 18.5 Ohms, with a maximum power dissipation of 400 mW. Switching performance includes a maximum turn-on time of 41 ns and a maximum turn-off time of 32 ns. It accommodates a maximum DC switch current of 30 mA and draws a maximum supply current of 1 uA. The component is housed in an SOIC-8 surface-mount package and functions reliably across an operating temperature range from -40°C to +85°C.
Feature Summary
- Provides single-pole single-throw (SPST) signal routing capability for analog applications.
- Operates with low quiescent supply current suitable for power-sensitive designs.
- Supports both single and dual power supply configurations for flexible system integration.
Applications
- Data acquisition systems requiring precise analog signal switching
- Instrumentation circuits utilizing multiplexed sensor inputs
- Communication equipment involving signal path selection
Procurement Notes
Verify the specific suffix requirements for the DG418LDY part number, as variations such as T1 or E3 may indicate different packaging or compliance standards. Confirm availability status directly with authorized distributors, as this component may be subject to discontinuation or limited stock conditions. Ensure that the selected variant matches the required RoHS compliance and lead-free specifications for the target assembly process.
Selection Notes
Select the DG418LDY when a single channel with moderate on-resistance is sufficient for the application. Compare its 18.5 Ohm on-resistance against lower resistance alternatives if signal integrity at high currents is critical. Verify that the ±15 V dual supply requirement aligns with the system power architecture. Consider the SOIC-8 package dimensions for PCB layout constraints and thermal management capabilities relative to the 400 mW power dissipation limit.
Part Context
The DG418LDY belongs to the DG series of analog switches produced by Vishay Siliconix. This series typically offers various channel counts and package options to suit different design needs. The LDY suffix generally denotes a specific tape-and-reel packaging format within the SOIC-8 footprint family, distinguishing it from tube-packaged variants like the DJ suffix.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official Vishay Siliconix resources for recommended alternates or cross-reference with similar single-channel SPST switches from other manufacturers, ensuring compatibility with voltage, resistance, and package specifications.
