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Product Detailed Parameters
- Description：IC SW SPST-NOX4 85OHM 16TSSOP
- Series：-
- Mfr：Vishay Siliconix
- Package：Tube
- Switch Circuit：SPST - NO
- Multiplexer/Demultiplexer Circuit：1:01
- On-State Resistance (Max)：85Ohm
- Channel-to-Channel Matching (ΔRon)：1.7Ohm
- Voltage - Supply, Single (V+)：4V ~ 44V
- Voltage - Supply, Dual (V±)：±4V ~ 22V
- Switch Time (Ton, Toff) (Max)：200ns, 150ns
- -3db Bandwidth：-
- Charge Injection：1pC
- Channel Capacitance (CS(off), CD(off))：5pF, 5pF
- Current - Leakage (IS(off)) (Max)：500pA
- Crosstalk：-95dB @ 100kHz
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：16-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：16-TSSOP
- Number of Circuits：4
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Overview
The DG308BDQ is a quad single-pole single-throw (SPST) analog switch manufactured by Vishay Siliconix in a 16-pin TSSOP package. It operates with dual supply voltages ranging from ±4 V to ±22 V or a single supply from 4 V to 44 V. The device features a maximum on-resistance of 85 Ω at room temperature and up to 100 Ω across the full industrial temperature range (-40 °C to +85 °C). Switching performance includes a maximum turn-on time of 200 ns and a turn-off time of 150 ns under dual supply conditions. Power dissipation is rated at 640 mW, with a maximum power supply current of 1 µA.
Feature Summary
- CMOS compatible logic interface for simple control
- Improved charge injection compensation design minimizes switching transients
- Epitaxial layer prevents latchup for reliable operation
- True bi-directional signal handling in the on condition
Applications
- Industrial instrumentation
- Test equipment
- Sample-and-hold circuits
- Communications systems
Procurement Notes
Verify the specific ordering suffix against official documentation to confirm package type and environmental compliance. The base part number DG308BDQ indicates a standard plastic TSSOP-16 package without RoHS compliance. Suffixes such as -E3 denote lead-free and RoHS-compliant versions. Confirm availability status directly with the manufacturer or authorized distributors, as production lifecycles may vary.
Selection Notes
Select the DG308BDQ when a quad SPST configuration with low on-resistance and fast switching speeds is required. Ensure the application voltage does not exceed the ±22 V dual supply limit. Verify that the logic input levels align with the specified VINH and VINL thresholds. Consider thermal derating requirements if operating near the maximum power dissipation limit of 640 mW.
Part Context
The DG308BDQ belongs to the DG308B/DG309B series of improved quad CMOS analog switches. It serves as an enhanced successor to the legacy DG308A, offering lower on-resistance, reduced leakage, and faster switching characteristics. The 'D' suffix specifically identifies the 16-pin narrow SOIC or TSSOP plastic package variant within the broader product family.
Replacement Considerations
The DG308A is a predecessor model with higher on-resistance and slower switching speeds. Direct pin-compatible replacements should be verified against the official datasheet for electrical parameter compatibility. No other specific substitute part numbers are confirmed in the provided source material.
