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Product Detailed Parameters
- Description：IC SW SPST-NOX4 85OHM 16TSSOP
- Series：-
- Mfr：Vishay Siliconix
- Package：Tape & Reel (TR)
- 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-T1 is a quad single-pole single-throw (SPST) analog switch manufactured by Vishay Siliconix in a 16-pin TSSOP package. It operates on dual supplies ranging from ±4 V to ±22 V or a single supply up to 44 V. The device features a maximum drain-source on-resistance of 85 Ω at room temperature and 100 Ω across the full operating range (-40 °C to +85 °C). Key electrical parameters include a turn-on time of 200 ns, turn-off time of 150 ns, and charge injection of 1 pC. Supply current is limited to 1 µA, with an off-leakage current of 20 pA.
Feature Summary
- CMOS fabrication process providing low power consumption and high accuracy
- Improved charge injection compensation design minimizes switching transients
- Epitaxial layer included to prevent latchup during operation
- True bi-directional signal handling capability in the on condition
Applications
- Sample-and-hold circuits
- Industrial instrumentation
- Test equipment
- Communications systems
Procurement Notes
Verify the specific suffix 'T1' corresponds to tape-and-reel packaging when sourcing components. Confirm that the 'D' suffix indicates the -40 °C to +85 °C industrial temperature grade required for the target application environment. Ensure compatibility with standard 16-pin TSSOP footprints during PCB layout planning.
Selection Notes
Select this component for applications requiring low charge injection and fast switching speeds within a compact surface-mount footprint. Verify that the maximum on-resistance of 85 Ω meets the signal integrity requirements of the circuit. Consider the ±22 V supply rating if interfacing with higher voltage analog signals compared to lower-voltage CMOS switches.
Part Context
This part belongs to the DG308B series, which serves as an improved version of the industry-standard DG308A. It offers enhanced performance metrics including lower on-resistance, reduced leakage, and faster switching speeds. The device is designed for telecommunications, process control, and computer peripheral applications where reliable analog signal routing is critical.
Replacement Considerations
The DG308A is the predecessor model with slightly higher resistance and leakage values. The DG309B is functionally similar but configured as a normally closed switch rather than normally open. Cross-reference pinouts and thermal derating curves when substituting these variants.
