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Vishay Siliconix DG9431DV-T1
- Part No.:
- DG9431DV-T1
- Manufacturer:
- Vishay Siliconix
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
DG9431DV-T1.pdf
- Description:
- IC SWITCH SPDT X 1 30OHM 6TSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
DG9431DV-T1 from Vishay Siliconix is a low-voltage single-pole/double-throw (SPDT) CMOS analog switch optimized for battery-powered systems. It operates from +2.7 V to +5 V, delivers 20 Ω typical on-resistance at 5 V, achieves 35 ns turn-on time, and guarantees break-before-make switching. It is used in portable test equipment to route analog signals with minimal distortion and charge injection.
For engineers reviewing the DG9431DV-T1 datasheet, DG9431DV-T1 pinout, DG9431DV-T1 application, or DG9431DV-T1 equivalent, key selection criteria include on-resistance matching, leakage current at temperature extremes, charge injection (<2 pC), TSOP-6 footprint constraints, and TTL/CMOS-compatible control logic levels.
Technical Context
The DG9431DV-T1 implements a monolithic CMOS SPDT switch fabricated on Vishay's BCD-15 low-voltage process, ensuring latchup immunity via an epitaxial layer. Its internal architecture enforces guaranteed break-before-make timing (3–10 ns) and bidirectional analog conduction with rail-to-rail signal handling up to V+.
Control logic accepts standard TTL/CMOS thresholds (≤0.8 V for "0", ≥2.4 V for "1") and draws only 1 µA supply current. ESD protection exceeds 2000 V per Method 3015.7, and all terminals tolerate overvoltage clamping within ±0.3 V of V+ or GND.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | +2.7 V to +5 V - supports single-cell Li-ion and dual-cell alkaline battery systems without regulation. |
| rDS(on) | 20 Ω max at V+ = 5 V - ensures <1% gain error in 1 kΩ signal paths with matched channels. |
| tON / tOFF | 35 ns / 20 ns typ at V+ = 5 V - enables sampling rates up to ~10 MHz in multiplexed data acquisition. |
| QINJ | 1–2 pC - limits voltage glitch to <2 mV on 1 nF hold capacitors in sample-and-hold circuits. |
| ICOM(on) | ±200 pA max - preserves DC accuracy in high-impedance sensor front-ends and precision integrators. |
| OIRR | −74 dB at 1 MHz - suppresses crosstalk between adjacent switched channels in RF/mixed-signal routing. |
| ESD Rating | >2000 V HBM - meets IEC 61000-4-2 Level 2 for handheld device interface robustness. |
Pinout & Package
Package: TSOP-6 (Thin Small Outline Package, 6-pin, 1.5 mm × 3 mm body, 0.95 mm height, 0.65 mm pitch).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Digital Control Input | Accepts TTL/CMOS logic; drives internal switch matrix; no external pull-up required. |
| 2 (NO) | Normally Open Switch Terminal | Connects to COM when IN = logic high; rated for ±20 mA continuous analog current. |
| 3 (COM) | Common Analog Terminal | Center node for SPDT routing; bidirectional signal path; handles rail-to-rail analog voltages. |
| 4 (GND) | Analog/Digital Ground Reference | Single ground pin shared by logic and analog sections; requires low-impedance PCB connection. |
| 5 (NC) | No Connect | Internally unconnected; must remain floating-no PCB trace or thermal pad attachment. |
| 6 (V+) | Positive Supply Rail | Powers analog switch core and level-shifter; bypass capacitor (0.1 µF) required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make guarantee | Ensures no momentary short between NO and NC during state transition, preventing signal contention in multiplexer trees. |
| Low charge injection (1–2 pC) | Minimizes voltage step on sampling capacitors, enabling <12-bit linearity in precision ADC front-ends. |
| TSOP-6 footprint (1.5 × 3 mm) | Reduces PCB area by >50% vs. SOIC-8; ideal for space-constrained portable medical and instrumentation designs. |
| 2000 V HBM ESD rating | Eliminates need for external transient protection in handheld test gear and field-deployable sensors. |
| rDS(on) matching (ΔrDS(on) ≤ 2 Ω) | Supports matched-gain differential signal routing in instrumentation amplifiers and balanced audio paths. |
Applications
| Battery-Powered Test Equipment | Portable Medical Sensors |
|---|---|
Use Scenario: Signal routing in handheld multimeters and oscilloscope probes to select between voltage, current, and resistance measurement paths. IC Role / Device Role / Timing Role: SPDT analog switch controlling signal path integrity with sub-50 ns switching and <20 Ω on-resistance. Use Value: Enables true RMS measurement accuracy by minimizing insertion loss and channel mismatch across ranges. | Use Scenario: Multiplexing ECG, SpO₂, and temperature sensor outputs into a single ADC input on wearable health monitors. IC Role / Device Role / Timing Role: Low-leakage (±200 pA), low-charge-injection analog switch preserving microvolt-level bio-potential fidelity. Use Value: Maintains diagnostic-grade signal-to-noise ratio without requiring recalibration due to switch-induced offset drift. |
| Cellular Front-End Switching | Military Radio IF Routing |
Use Scenario: Antenna diversity switching and band selection in LTE/Wi-Fi combo modules operating from 3.3 V rails. IC Role / Device Role / Timing Role: High-isolation (−74 dB @ 1 MHz), fast-switching SPDT managing RF receive paths below 1 GHz. Use Value: Reduces inter-band interference and improves adjacent-channel rejection without adding passive filtering complexity. | Use Scenario: Reconfigurable IF signal routing in software-defined radios deployed in tactical field radios with −40 °C to +85 °C operation. IC Role / Device Role / Timing Role: Temperature-stable analog switch with guaranteed break-before-make and 2000 V ESD tolerance for harsh EM environments. Use Value: Ensures uninterrupted communication link reliability during rapid frequency hopping and high-voltage transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4617EUT+T | Higher rDS(on) (45 Ω typ), slower tON (60 ns), SO-6 package only - no TSOP-6 option. | Less suitable for high-speed sampling; larger board footprint; same temp range (−40 °C to +85 °C). | Select when legacy MAXIM design reuse is prioritized over size or speed. |
| ADG849YKSZ-REEL7 | Lower QINJ (0.3 pC), but higher ICOM(on) (±500 pA), WLCSP-6 package - not drop-in compatible. | Better for ultra-low-glitch sample-and-hold; worse for high-Z sensor buffering; requires re-layout. | Select when charge injection dominates design spec and board space allows WLCSP rework. |
Compared with MAX4617EUT+T and ADG849YKSZ-REEL7, the DG9431DV-T1 uniquely balances TSOP-6 compactness, 20 Ω on-resistance, and guaranteed break-before-make-making it optimal for new portable instrumentation where layout efficiency and signal integrity are co-constrained.
Availability
DG9431DV-T1 is available at Aetrix Electronics and suitable for battery-operated systems, portable test equipment, and sample-and-hold circuits requiring stable component supply across industrial and commercial temperature ranges.
Supply support for DG9431DV-T1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay Siliconix is a global semiconductor manufacturer specializing in discrete MOSFETs, diodes, optoelectronics, and analog switches, with emphasis on high-reliability, low-power, and ruggedized components.
The DG9431DV-T1 belongs to Vishay's low-voltage analog switch product line, engineered specifically for portable, battery-constrained applications demanding minimal power, small footprint, and rail-to-rail signal integrity.
FAQ
What is the maximum analog signal voltage range supported by the DG9431DV-T1?
The DG9431DV-T1 supports analog signals from 0 V to V+, where V+ ranges from +2.7 V to +5 V. At V+ = 5 V, the full analog signal range is 0 V to 5 V. Signals exceeding V+ or going below GND are clamped by internal diodes, with forward current limited to absolute maximum ratings. This rail-to-rail capability makes DG9431DV-T1 suitable for direct interfacing with unbuffered ADC inputs and sensor outputs without level-shifting circuitry.
Does the DG9431DV-T1 require external pull-up or pull-down resistors on its IN pin?
No, the DG9431DV-T1 does not require external pull-up or pull-down resistors on the IN pin. Its digital input is TTL/CMOS compatible with guaranteed switching thresholds of ≤0.8 V for logic low and ≥2.4 V for logic high at V+ = 5 V. The input leakage current is ≤1 µA, allowing direct connection to microcontroller GPIOs or FPGA outputs. This simplifies PCB layout and reduces BOM count in DG9431DV-T1-based designs.
Is the DG9431DV-T1 RoHS compliant and lead-free?
Yes, the DG9431DV-T1-E3 variant (the ordering part referenced in the datasheet) is lead (Pb)-free and RoHS compliant. It uses 100 % matte tin device terminations, designated by the "-E3" suffix. The base part DG9431DV-T1 is the non-RoHS version with lead-containing terminations. For new designs, Aetrix Electronics supplies only the RoHS-compliant DG9431DV-T1-E3, which meets exemption requirements under Directive 2011/65/EU.
How is break-before-make timing guaranteed in the DG9431DV-T1?
Break-before-make timing in the DG9431DV-T1 is guaranteed by internal circuit design-not production testing-and specified as 3 ns minimum to 10 ns maximum at room temperature. This ensures the NO and NC paths are never simultaneously conductive during switching, eliminating signal shorting in multiplexed configurations. The guarantee holds across the full −40 °C to +85 °C operating range and is validated through characterization on Vishay's BCD-15 process.
Can the DG9431DV-T1 be used with a 3.3 V supply, and what performance changes occur?
Yes, the DG9431DV-T1 operates fully across 2.7 V to 5 V, including 3.3 V. At V+ = 3.3 V, rDS(on) increases to ≤50 Ω (vs. 20 Ω at 5 V), tON extends to ≤120 ns (vs. 35 ns), and charge injection rises slightly to ≤5 pC. All specifications remain valid across −40 °C to +85 °C. These trade-offs are acceptable in many portable applications where lower supply voltage extends battery life, and DG9431DV-T1 maintains functional integrity without derating.
DG9431DV-T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 30Ohm
- Channel-to-Channel Matching (ΔRon):
- 400mOhm
- Voltage - Supply, Single (V+):
- 2.7V ~ 5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 75ns, 50ns
- -3db Bandwidth:
- -
- Charge Injection:
- 2pC
- Channel Capacitance (CS(off), CD(off)):
- 7pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TSOP
DG9431DV-T1 FAQ
1.How can I place an order for DG9431DV-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG9431DV-T1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DG9431DV-T1 reliable?
The price and inventory of DG9431DV-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG9431DV-T1 is usually 5 days.
3.What payment methods are accepted for DG9431DV-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG9431DV-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG9431DV-T1?
DG9431DV-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG9431DV-T1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DG9431DV-T1?
For technical support, including DG9431DV-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG9431DV-T1 requirements.
6.How does Aetrix verify that DG9431DV-T1 is sourced from the original manufacturer or authorized distributors?
All DG9431DV-T1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DG9431DV-T1 meets industry standards.
7.What is the process for return or replacement of DG9431DV-T1?
All DG9431DV-T1 units undergo pre-shipment inspection (PSI). If there is an issue with DG9431DV-T1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DG9431DV-T1 part is unused and in its original packaging.
Return procedure for DG9431DV-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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