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Vishay Siliconix DG9431EDY-T1-GE3
- Part No.:
- DG9431EDY-T1-GE3
- Manufacturer:
- Vishay Siliconix
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG9431EDY-T1-GE3.pdf
- Description:
- IC SWITCH SPDT X 1 30OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:9,137
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Product details
Overview
DG9431EDY-T1-GE3 from Vishay Siliconix is a monolithic CMOS SPDT analog switch optimized for precision signal routing in low-voltage instrumentation and healthcare systems. It delivers 17 Ω typical on-resistance at 5 V, 1 pC charge injection, 100 pA max off-leakage at 25 °C, and operates from +2.7 V to +5.5 V single supply - enabling high-fidelity signal path switching in ADC/DAC front ends and sample-and-hold circuits.
For engineers reviewing the DG9431EDY-T1-GE3 datasheet, DG9431EDY-T1-GE3 pinout, DG9431EDY-T1-GE3 application, or DG9431EDY-T1-GE3 equivalent, key selection criteria include guaranteed break-before-make timing, sub-100 pA leakage performance across -40 °C to +85 °C, low 3.8 pF off-capacitance, and SOIC-8 package compatibility with standard PCB land patterns per Vishay Doc. 72610.
Technical Context
The DG9431EDY-T1-GE3 implements a single-pole double-throw (SPDT) topology with symmetrical bidirectional conduction when enabled and rail-to-rail blocking when disabled. Its CMOS architecture ensures TTL/CMOS logic compatibility and overvoltage tolerance on the IN control pin.
Break-before-make switching is guaranteed by internal timing control, eliminating signal shorting during state transitions. The device supports full analog signal swing from 0 V to V+ (up to 5 V), with RDS(on) flatness of 3.5 Ω (typ.) and matching of 0.4 Ω (typ.) between NO and NC paths at 5 V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance | 17 Ω (typ.) at 5 V - enables low insertion loss in precision analog signal chains |
| Charge injection | −0.78 pC (typ.) - minimizes voltage glitch in sample-and-hold and multiplexed ADC inputs |
| Off-leakage current | ±100 pA (max.) at 25 °C - preserves accuracy in high-impedance sensor interfaces |
| Switching time | tON = 32 ns, tOFF = 10 ns (typ.) at 5 V - supports >10 MHz multiplexing in data acquisition |
| Capacitance | CNO/NC(off) = 3.8 pF, CCOM(on) = 7.8 pF - reduces crosstalk and bandwidth degradation in multi-channel systems |
| Supply range | +2.7 V to +5.5 V single supply - compatible with 3.3 V and 5 V logic domains without level shifting |
| ESD tolerance | 8 kV HBM, 1 kV CDM - enhances robustness during handling and system integration |
Pinout & Package
DG9431EDY-T1-GE3 is packaged in an 8-pin narrow-body SOIC (JEDEC MS-012) with 1.27 mm pitch, footprint per Vishay Doc. 72606. Thermal derating is 7 mW/°C above 70 °C; maximum power dissipation is 400 mW.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NO) | Normally open switch terminal | Connects to COM when IN = HIGH; used for active-path signal routing |
| 2 (V+) | Positive supply rail | Accepts +2.7 V to +5.5 V; powers internal CMOS switch core and level shifter |
| 3 (COM) | Common analog terminal | Central node shared between NO and NC; bidirectional signal path |
| 4 (IN) | Digital control input | TTL/CMOS-compatible; logic HIGH (≥2.4 V) selects NO, LOW (≤0.8 V) selects NC |
| 5 (NC) | Normally closed switch terminal | Connects to COM when IN = LOW; provides default signal path |
| 6 (GND) | Analog/digital ground reference | Return path for supply and signal; must be low-impedance for leakage and noise control |
| 7, 8 | Not connected | No internal bond; left unconnected per datasheet - no PCB trace required |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed break-before-make | Eliminates momentary shorting between NO and NC paths during switching - critical for fault-tolerant signal routing |
| Low on-resistance flatness | 3.5 Ω (typ.) variation over 0–5 V analog range - maintains consistent gain and linearity in variable-gain stages |
| Sub-nanowatt static power | 1 nW typical consumption - enables always-on operation in battery-powered portable medical devices |
| Rail-to-rail analog capability | Full 0 V to V+ signal handling - supports unipolar sensor outputs and DAC buffers without clamping diodes |
| High off-isolation | −80 dB at 1 MHz - suppresses interference between channels in multi-signal acquisition systems |
Applications
| Medical Patient Monitoring | Data Acquisition Front End |
|---|---|
Use Scenario: Routing ECG, EEG, or SpO₂ sensor signals to a shared ADC channel in a portable monitor. IC Role / Device Role / Timing Role: SPDT analog switch selecting between multiple biopotential inputs while maintaining signal integrity and low noise floor. Use Value: 1 pC charge injection prevents baseline shift during multiplexing; 100 pA leakage avoids DC offset drift in high-impedance electrode interfaces. | Use Scenario: Channel selection in a 16-channel industrial DAQ system with ±10 V input range and 16-bit resolution. IC Role / Device Role / Timing Role: Precision analog multiplexer enabling sequential sampling without cross-talk or settling error. Use Value: 3.8 pF off-capacitance and −108 dB crosstalk ensure minimal inter-channel coupling; 32 ns tON supports ≥10 kSPS aggregate throughput. |
| Portable Diagnostic Instrument | Low-Power Sensor Interface |
Use Scenario: Signal path switching in handheld ultrasound or glucose meter with rechargeable Li-ion battery. IC Role / Device Role / Timing Role: Low-voltage analog switch managing gain-setting resistors and filter configurations in analog front end. Use Value: 1 nW quiescent power extends battery life; +2.7 V minimum supply allows direct operation from partially discharged cells. | Use Scenario: Selecting between thermistor, RTD, and strain gauge bridges in a wireless condition-monitoring node. IC Role / Device Role / Timing Role: High-impedance analog switch isolating sensor elements during measurement to prevent loading errors. Use Value: ±100 pA leakage ensures <0.1 µV error in 10 MΩ bridge arms; 17 Ω RDS(on) introduces negligible series resistance in excitation paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4617EUA+ | Higher RDS(on) (45 Ω typ. at 5 V), higher charge injection (2.5 pC), SOIC-8 package | Lower precision; suitable for non-critical general-purpose switching | Select when cost sensitivity outweighs leakage and charge injection requirements |
| ADG774ARZ | Quad SPDT, 4.5 Ω RDS(on) at 5 V, but 10 pC charge injection and higher 100 nA leakage | Higher channel density but degraded precision for medical-grade signal routing | Prefer for space-constrained multi-channel designs where leakage <100 pA is not mandatory |
Compared with MAX4617EUA+ and ADG774ARZ, DG9431EDY-T1-GE3 uniquely balances ultra-low leakage (100 pA max), sub-1 pC charge injection, and 17 Ω on-resistance in a single-channel SOIC-8 - making it the only option qualified for battery-powered, high-accuracy biomedical front ends requiring guaranteed break-before-make timing.
Availability
DG9431EDY-T1-GE3 is available at Aetrix Electronics and suitable for medical patient monitoring, portable diagnostic instruments, industrial data acquisition front ends, and low-power sensor interface applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for DG9431EDY-T1-GE3 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 leader in discrete semiconductors and passive components, specializing in high-reliability analog switches, MOSFETs, and precision resistive solutions for demanding industrial and medical applications.
DG9431EDY-T1-GE3 belongs to Vishay's precision analog switch product line, engineered specifically for low-leakage, low-charge-injection signal routing in battery-powered and high-accuracy measurement systems.
FAQ
What is the maximum operating temperature range for DG9431EDY-T1-GE3?
The DG9431EDY-T1-GE3 is rated for operation from −40 °C to +85 °C (D suffix). This range is validated per the datasheet's "Specifications" tables and supported by thermal derating curves showing 7 mW/°C reduction above 70 °C. All electrical parameters - including 100 pA leakage and 17 Ω RDS(on) - are guaranteed across this full industrial temperature range.
Does DG9431EDY-T1-GE3 support dual-supply operation?
No, DG9431EDY-T1-GE3 is designed exclusively for single-supply operation from +2.7 V to +5.5 V. The datasheet specifies no dual-supply (±V) configuration, and absolute maximum ratings define only V+ to GND limits (−0.3 V to +6 V). Attempting dual-supply bias risks violating internal ESD protection structures and invalidating guaranteed performance.
Is DG9431EDY-T1-GE3 pin-compatible with other Vishay SPDT switches in SOIC-8?
DG9431EDY-T1-GE3 uses the standard SOIC-8 pinout shown in the datasheet's "Pin Configuration" diagram (pins 1–6 assigned to NO, V+, COM, IN, NC, GND; pins 7–8 NC). While Vishay's DG9432E shares identical pinout and function, DG9431EDY-T1-GE3 is not pin-compatible with DG9433E (dual SPDT) or DG9434E (quad SPDT), which use different pin assignments and internal routing.
What is the recommended PCB land pattern for DG9431EDY-T1-GE3?
Vishay specifies the recommended land pattern for DG9431EDY-T1-GE3 in Application Note 72606, which defines pad dimensions for narrow-body SOIC-8: 0.047" (1.194 mm) width, 0.172" (4.369 mm) length, 0.028" (0.711 mm) spacing, and 0.050" (1.270 mm) center-to-center pitch. These dimensions ensure reliable solder joint formation and thermal performance per JEDEC MS-012 standards.
Can DG9431EDY-T1-GE3 safely switch signals exceeding the V+ supply rail?
No. Per Absolute Maximum Ratings, analog signals on NO, NC, or COM must remain within −0.3 V to (V+ + 0.3 V). Exceeding this range forward-biases internal ESD clamp diodes, risking permanent damage if current exceeds ±20 mA continuous or ±40 mA pulsed. External clamping or level-shifting circuitry is required for overvoltage signal handling.
DG9431EDY-T1-GE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 1:2
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 30Ohm
- Channel-to-Channel Matching (ΔRon):
- 400mOhm
- Voltage - Supply, Single (V+):
- 2.7V ~ 12V
- 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:
- 8-SOIC
DG9431EDY-T1-GE3 FAQ
1.How can I place an order for DG9431EDY-T1-GE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG9431EDY-T1-GE3 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 DG9431EDY-T1-GE3 reliable?
The price and inventory of DG9431EDY-T1-GE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG9431EDY-T1-GE3 is usually 5 days.
3.What payment methods are accepted for DG9431EDY-T1-GE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG9431EDY-T1-GE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG9431EDY-T1-GE3?
DG9431EDY-T1-GE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG9431EDY-T1-GE3 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 DG9431EDY-T1-GE3?
For technical support, including DG9431EDY-T1-GE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG9431EDY-T1-GE3 requirements.
6.How does Aetrix verify that DG9431EDY-T1-GE3 is sourced from the original manufacturer or authorized distributors?
All DG9431EDY-T1-GE3 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 DG9431EDY-T1-GE3 meets industry standards.
7.What is the process for return or replacement of DG9431EDY-T1-GE3?
All DG9431EDY-T1-GE3 units undergo pre-shipment inspection (PSI). If there is an issue with DG9431EDY-T1-GE3, 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 DG9431EDY-T1-GE3 part is unused and in its original packaging.
Return procedure for DG9431EDY-T1-GE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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