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Vishay Siliconix DG9431DY-E3
- Part No.:
- DG9431DY-E3
- Manufacturer:
- Vishay Siliconix
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG9431DY-E3.pdf
- Description:
- IC SWITCH SPDT X 1 30OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,828
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Product details
Overview
DG9431DY-E3 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 and 20 ns turn-off times, and injects only 1 pC charge - enabling high-accuracy signal routing in portable test equipment and sample-and-hold circuits.
For engineers reviewing the DG9431DY-E3 datasheet, DG9431DY-E3 pinout, DG9431DY-E3 application, or DG9431DY-E3 equivalent, key selection criteria include its TSOP-6/SOIC-8 package options, guaranteed break-before-make timing, ±20 mA continuous current rating, and 2000 V HBM ESD protection per Method 3015.7.
Technical Context
The DG9431DY-E3 implements a monolithic CMOS SPDT switch architecture with epitaxial latchup prevention and rail-to-rail analog signal handling (0 V to V+). Its control logic accepts TTL/CMOS-compatible inputs (0.8 V low, 2.4 V high), and internal clamping diodes protect terminals against overvoltage up to V+ + 0.3 V.
Designed on Vishay's BCD-15 process, the device guarantees break-before-make operation and supports bidirectional signal flow with matched on-resistance (ΔrDS(on) ≤ 2 Ω) and flat rDS(on) response (≤6 Ω variation across 1–3 V COM range at 5 V supply).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7 V to +12 V - supports wide input rails while maintaining specified performance from 2.7 V minimum. |
| rDS(on) @ 5 V | 20 Ω typical - enables low insertion loss and minimal signal distortion in audio and precision analog paths. |
| tON / tOFF | 35 ns / 20 ns - ensures fast channel switching for time-critical sampling and multiplexing applications. |
| Charge Injection | 1 pC - minimizes voltage glitch in sample-and-hold and ADC front-end circuits. |
| Off-Leakage Current | ±100 pA max at 25 °C - preserves signal integrity in high-impedance sensor interfaces. |
| ESD Rating | >2000 V HBM - provides robust handling during board assembly and field operation. |
| Break-Before-Make | Guaranteed - prevents momentary shorting between NC and NO paths during state transitions. |
Pinout & Package
Package: SOIC-8 (narrow body, 150 mil width), RoHS-compliant matte tin terminations with -E3 suffix.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Digital Control Input | Accepts TTL/CMOS logic; drives internal switch matrix; low = connect COM to NO, high = connect COM to NC. |
| 2 (NC) | Normally Closed Terminal | Analog path connected to COM when IN = logic low; rated for ±20 mA continuous current. |
| 3 (NO) | Normally Open Terminal | Analog path connected to COM when IN = logic high; same voltage/current ratings as NC. |
| 4 (GND) | Ground Reference | Return path for digital control and substrate bias; must be tied to system ground plane. |
| 5 (COM) | Common Analog Terminal | Bidirectional signal port; handles rail-to-rail analog voltages (0 V to V+) with low on-resistance. |
| 6 (V+) | Positive Supply Rail | Power source for internal circuitry; also defines analog signal ceiling; decoupling capacitor required. |
| 7, 8 (NC) | No Connect | Internally unconnected pins; must remain floating or grounded per PCB layout best practices. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports 0 V to V+ input range without clipping or distortion - critical for full-scale sensor and DAC outputs. |
| Guaranteed break-before-make | Eliminates signal shorting during switching - essential for protecting downstream amplifiers and ADC inputs. |
| Low 1 pC charge injection | Reduces hold-mode error in precision sample-and-hold circuits to sub-millivolt levels with 1 nF hold capacitors. |
| 2000 V HBM ESD protection | Meets industrial handling requirements without external protection components - lowers BOM count and layout complexity. |
| TSOP-6 and SOIC-8 packaging | Enables footprint flexibility: TSOP-6 saves board space in wearables; SOIC-8 simplifies prototyping and rework. |
Applications
| Battery-Powered Test Equipment | Portable Medical Sensors |
|---|---|
Use Scenario: Signal routing between multiple sensor inputs and a shared ADC in handheld multimeters or oscilloscope probes. IC Role / Device Role / Timing Role: SPDT analog switch selecting active sensor channel under microcontroller GPIO control. Use Value: 35 ns switching and 20 Ω rDS(on) preserve signal fidelity and minimize settling time before ADC sampling. | Use Scenario: Multiplexing ECG, SpO₂, and temperature signals into a low-power wearable health monitor. IC Role / Device Role / Timing Role: Low-leakage analog switch isolating high-impedance biopotential electrodes during channel scanning. Use Value: ±100 pA off-leakage and 1 pC charge injection prevent baseline drift and motion artifact in millivolt-level bio-signals. |
| Cellular Phone Audio Routing | Industrial PLC I/O Modules |
Use Scenario: Dynamic reconfiguration of microphone and speaker paths during call mode, headset detection, and noise cancellation. IC Role / Device Role / Timing Role: Bidirectional SPDT switch managing audio signal direction and path selection in baseband processor interface. Use Value: 20 Ω on-resistance and rail-to-rail operation maintain SNR >90 dB across 20 Hz–20 kHz audio band. | Use Scenario: Isolating analog sensor inputs (4–20 mA, 0–10 V) from shared signal conditioning circuitry in modular I/O cards. IC Role / Device Role / Timing Role: High-reliability analog switch providing channel-by-channel fault containment and calibration path selection. Use Value: Guaranteed break-before-make and 2000 V ESD withstand prevent cross-channel coupling and field-induced latchup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4617ESA+ | Higher rDS(on) (35 Ω typ @ 5 V), slower tON/tOFF (60/30 ns), no guaranteed break-before-make | Suitable for non-critical signal routing where timing margin exists | Select when lower cost is prioritized over timing precision and short-circuit immunity |
| ADG774ARZ | Lower leakage (±1 pA typ), but higher rDS(on) (4.5 Ω min not guaranteed), no 2000 V ESD rating | Better for ultra-high-Z sensor nodes; less robust in industrial handling environments | Select when femtoampere leakage dominates design requirements and ESD exposure is controlled |
Compared with MAX4617ESA+ and ADG774ARZ, the DG9431DY-E3 uniquely balances low on-resistance, guaranteed break-before-make, and production-grade ESD robustness - making it optimal for portable instrumentation and mixed-signal I/O modules requiring both speed and reliability.
Availability
DG9431DY-E3 is available at Aetrix Electronics and suitable for battery-operated systems, portable test equipment, and industrial PLC I/O modules requiring stable component supply and long-term manufacturing continuity.
Supply support for DG9431DY-E3 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 and power-efficient solutions.
The DG9431DY-E3 belongs to Vishay's low-voltage analog switch product line, engineered for portable and battery-powered applications demanding low power, small footprint, and rail-to-rail signal integrity.
FAQ
What is the maximum analog signal voltage range supported by the DG9431DY-E3?
The DG9431DY-E3 supports analog signals from 0 V to V+, where V+ ranges from +2.7 V to +12 V. At V+ = 5 V, the full analog range is 0 V to 5 V. Internal clamping diodes limit terminal voltages to V+ + 0.3 V, preventing damage from transient overvoltage. This rail-to-rail capability makes DG9431DY-E3 suitable for interfacing with DACs, sensors, and op-amp outputs without level-shifting.
Does the DG9431DY-E3 require external pull-up or pull-down resistors on the IN pin?
No, the DG9431DY-E3 does not require external pull-up or pull-down resistors on the IN pin. Its TTL/CMOS-compatible input threshold is defined as logic low ≤ 0.8 V and logic high ≥ 2.4 V, with input current limited to ±1 µA across temperature. Direct connection to microcontroller GPIO or FPGA output is sufficient. External resistors may be added only if needed for noise immunity in high-EMI environments - not for basic functionality of DG9431DY-E3.
Is the DG9431DY-E3 pin-compatible with the DG9431DY-T1 version?
Yes, the DG9431DY-E3 is pin-compatible with the DG9431DY-T1. Both use the same SOIC-8 package with identical pinout, electrical specifications, and thermal characteristics. The -E3 suffix denotes lead-free (RoHS-compliant) matte tin terminations, while -T1 indicates tape-and-reel packaging; functionally and mechanically, DG9431DY-E3 and DG9431DY-T1 are interchangeable in existing designs without layout changes.
What is the thermal derating behavior of the DG9431DY-E3 above 75 °C?
The DG9431DY-E3 requires thermal derating above 75 °C at 6.5 mW/°C. Its SOIC-8 package has a maximum power dissipation of 400 mW at ≤75 °C ambient. Above that, allowable power drops linearly - e.g., at 100 °C ambient, max dissipation is reduced to 400 mW − (25 °C × 6.5 mW/°C) = 237.5 mW. This derating applies to total device power, including I²R losses and supply current, and must be accounted for in thermally constrained DG9431DY-E3 applications.
Can the DG9431DY-E3 be used with dual-supply (±V) configurations?
No, the DG9431DY-E3 is designed exclusively for single-supply operation with V+ referenced to GND. It lacks a negative supply pin and internal level-shifting circuitry for bipolar rails. The absolute maximum rating for V+ is −0.3 V to +13 V relative to GND, and analog signals must stay within 0 V to V+. For dual-supply applications requiring ±5 V or ±15 V signal switching, a different analog switch family - such as the DG4xx series - must be selected instead of DG9431DY-E3.
DG9431DY-E3 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:
- 8-SOIC
DG9431DY-E3 FAQ
1.How can I place an order for DG9431DY-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG9431DY-E3 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 DG9431DY-E3 reliable?
The price and inventory of DG9431DY-E3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG9431DY-E3 is usually 5 days.
3.What payment methods are accepted for DG9431DY-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG9431DY-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG9431DY-E3?
DG9431DY-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG9431DY-E3 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 DG9431DY-E3?
For technical support, including DG9431DY-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG9431DY-E3 requirements.
6.How does Aetrix verify that DG9431DY-E3 is sourced from the original manufacturer or authorized distributors?
All DG9431DY-E3 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 DG9431DY-E3 meets industry standards.
7.What is the process for return or replacement of DG9431DY-E3?
All DG9431DY-E3 units undergo pre-shipment inspection (PSI). If there is an issue with DG9431DY-E3, 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 DG9431DY-E3 part is unused and in its original packaging.
Return procedure for DG9431DY-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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