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Product Detailed Parameters
- Description：IC SW SPST-NCX4 85OHM 16TSSOP
- Series：-
- Mfr：Vishay Siliconix
- Package：Tape & Reel (TR)
- Switch Circuit：SPST - NC
- 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 DG309BDQ-T1 is a quad single-pole single-throw (SPST) analog switch from the DG308B/DG309B series, manufactured by Vishay Siliconix. It features a TSSOP-16 surface-mount package and operates within an extended temperature range of -40 °C to +85 °C. The device supports dual supply voltages up to ±22 V or single supplies up to 44 V. Key electrical parameters include a maximum on-resistance of 85 Ω at room temperature under ±15 V supplies, with a turn-on time of 200 ns and turn-off time of 150 ns. Power dissipation in the TSSOP package is rated at 640 mW.
Feature Summary
- CMOS fabrication process providing low power consumption and high accuracy
- Improved charge injection compensation design minimizes switching transients
- Epitaxial layer integration prevents latchup for reliable operation
- True bi-directional signal handling capability in the on condition
Applications
- Sample-and-hold circuits
- Industrial instrumentation
- Test equipment
- Communications systems
- Portable instruments
Procurement Notes
Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status as standard suffixes may vary. Check datasheet revision history for potential parameter updates. Validate package marking against official documentation to ensure correct identification before procurement.
Selection Notes
Select this part when a normally closed SPST configuration is required. Ensure supply voltage does not exceed ±22 V for continuous operation. Verify thermal management capabilities given the 640 mW power dissipation limit in the TSSOP-16 package. Consider the 85 Ω on-resistance maximum for signal integrity requirements.
Part Context
This component belongs to the DG308B/DG309B family of improved quad CMOS analog switches. It serves as the normally closed variant, contrasting with the DG308B which is normally open. Both devices share identical pinouts and electrical characteristics except for their default logic states.
Replacement Considerations
DG309BDQ-E3: Lead-free version of the same component.
FAQ
What is the default state of the DG309BDQ-T1 switches?
The DG309BDQ-T1 consists of four normally closed switches that open when the logic input is high.
Does the DG309BDQ-T1 support single-supply operation?
Yes, it supports single supply operation ranging from 4 V to 44 V, though on-resistance values differ from dual-supply specifications.
What is the maximum analog signal range for this device?
The analog signal range extends from the negative supply rail to the positive supply rail, supporting up to ±22 V.
