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Vishay Siliconix DG9431DY-T1-E3
- Part No.:
- DG9431DY-T1-E3
- Manufacturer:
- Vishay Siliconix
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG9431DY-T1-E3.pdf
- Description:
- IC SWITCH SPDT X 1 30OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,089
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Product details
Overview
DG9431DY-T1-E3 from Vishay Siliconix is a low-voltage single-pole/double-throw (SPDT) CMOS analog switch in SOIC-8 package, operating from +2.7 V to +5 V, with 20 Ω typical on-resistance at 5 V, 35 ns turn-on time, and 20 ns turn-off time. It delivers break-before-make switching for signal routing in portable test equipment and battery-powered communication systems.
For engineers reviewing the DG9431DY-T1-E3 datasheet, DG9431DY-T1-E3 pinout, DG9431DY-T1-E3 application, or DG9431DY-T1-E3 equivalent, key selection criteria include guaranteed break-before-make timing, sub-100 pA channel-on leakage at 25 °C, TSOP-6/SOIC-8 dual-package availability, and RoHS-compliant matte tin terminations.
Technical Context
The DG9431DY-T1-E3 implements a monolithic CMOS SPDT switch architecture built on Vishay's BCD-15 process, supporting bidirectional analog signal conduction with rail-to-rail voltage handling up to V+ and guaranteed break-before-make operation. Its logic interface accepts TTL/CMOS-compatible inputs (0.8 V low, 2.4 V high) and features epitaxial latchup protection.
It operates across –40 °C to +85 °C with absolute maximum ratings of –0.3 V to +13 V on V+, ±20 mA continuous terminal current, and >2000 V HBM ESD per Method 3015.7. Signal clamping diodes protect against overvoltage on IN, COM, NO, and NC pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7 V to +5 V - supports direct integration into 3.3 V and 5 V logic-supplied portable systems without level shifting. |
| On-Resistance (rDS(on)) | 20 Ω typ @ V+ = 5 V - ensures minimal signal attenuation and distortion in precision analog paths. |
| Turn-On / Turn-Off Time | 35 ns / 20 ns @ V+ = 5 V - enables high-speed multiplexing in sample-and-hold and data acquisition circuits. |
| Channel-On Leakage | ±200 pA max @ 25 °C - preserves accuracy in high-impedance sensor interfaces and low-current measurement nodes. |
| Charge Injection | 1 pC max - reduces settling error and pedestal distortion in switched-capacitor and ADC front-end applications. |
| ESD Rating | >2000 V HBM - provides robust handling during board assembly and field service in handheld devices. |
Pinout & Package
Package: SOIC-8 narrow-body surface-mount package (5.0 mm × 4.0 mm × 1.5 mm), RoHS-compliant matte tin terminations, lead (Pb)-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Digital control input | Accepts TTL/CMOS logic levels; drives internal switch matrix; low = connect COM to NO, high = connect COM to NC. |
| 2 (NO) | Normally-open analog terminal | Open-circuit when IN = 0; connects to COM when IN = 1; rated for ±20 mA continuous analog current. |
| 3 (NC) | Normally-closed analog terminal | Connected to COM when IN = 0; open when IN = 1; identical electrical specs to NO pin. |
| 4 (GND) | Analog and digital ground reference | Common return path for power supply and signal currents; must be low-impedance for leakage and noise control. |
| 5 (COM) | Common analog terminal | Bidirectional signal path shared between NO and NC; handles full analog signal range (0 to V+). |
| 6 (V+) | Positive supply rail | Powers internal CMOS circuitry and defines analog signal ceiling; decoupling capacitor required near pin. |
| 7, 8 | No Connect (NC) | Internally unconnected; must remain floating or tied to GND per layout best practice; no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make guarantee | Ensures no momentary short between NO and NC during switching-critical for avoiding signal glitches in audio or RF routing. |
| Low 1 pC charge injection | Minimizes voltage step errors in capacitor-coupled stages, enabling stable DC-coupled sampling in precision instrumentation. |
| 20 Ω on-resistance flatness | Variation ≤6 Ω across 1–3 V COM voltage range at 5 V supply-maintains consistent gain and linearity in variable-gain amplifiers. |
| Rail-to-rail analog signal range | Supports 0 V to V+ signal swing without clipping-enables full utilization of ADC input range in battery-powered data loggers. |
| TSOP-6 and SOIC-8 packaging | SOIC-8 (DG9431DY-T1-E3) offers ease of rework and legacy compatibility; TSOP-6 variant saves board space in ultra-compact designs. |
Applications
| Battery-Powered Test Equipment | Cellular Phone Front-End |
|---|---|
Use Scenario: Signal routing between multiple sensor inputs and a shared ADC in handheld multimeters or portable oscilloscopes. IC Role / Device Role / Timing Role: SPDT analog switch selecting one of two differential sensor outputs to feed a precision SAR ADC. Use Value: 35 ns switching enables rapid channel scanning without measurable acquisition delay; 200 pA leakage prevents offset drift in µV-level measurements. | Use Scenario: Antenna diversity switching between primary and backup RF paths in 4G/LTE handsets. IC Role / Device Role / Timing Role: Low-distortion analog switch isolating transmit/receive signal paths while maintaining impedance continuity. Use Value: 20 Ω rDS(on) and 32 pF CD(on) preserve RF insertion loss and return loss; break-before-make prevents TX-RX coupling during band switching. |
| Sample-and-Hold Circuits | Military Radio Audio Routing |
Use Scenario: Sampling analog sensor output into a hold capacitor prior to digitization in ruggedized environmental monitors. IC Role / Device Role / Timing Role: Precision switch connecting sensor to hold capacitor with minimal charge kickback. Use Value: 1 pC charge injection limits hold-step error to <1 LSB in 12-bit systems; 20 Ω on-resistance ensures fast capacitor charging. | Use Scenario: Selecting between encrypted voice codec output and auxiliary audio input in manpack radios operating across –40 °C to +85 °C. IC Role / Device Role / Timing Role: Temperature-stable analog switch routing audio signals without gain variation or distortion. Use Value: rDS(on) variation <2 Ω over full temperature range maintains consistent audio level; ESD-hardened design survives field handling. |
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 on-resistance (35 Ω typ), slower tON (60 ns), same SO-6 package but different pinout. | Limited to lower-speed industrial controls; not suitable for sub-50 ns timing-critical sampling. | Select only if footprint compatibility and cost outweigh speed/leakage requirements. |
| ADG741BRMZ-REEL7 | Lower leakage (±10 pA), same 35 ns tON, but requires ≥4.5 V supply for full spec compliance. | Better for ultra-low-current medical sensors; unsuitable for 3.3 V-only battery systems. | Prefer when sub-100 pA leakage is mandatory and supply headroom allows ≥4.5 V operation. |
Compared with MAX4617EUT+T and ADG741BRMZ-REEL7, the DG9431DY-T1-E3 uniquely balances 3.3 V/5 V dual-supply flexibility, guaranteed break-before-make, and 200 pA leakage-making it optimal for portable test gear where supply voltage margin and switching integrity are jointly constrained.
Availability
DG9431DY-T1-E3 is available at Aetrix Electronics and suitable for battery-operated systems, portable test equipment, and cellular phone front-end designs requiring stable component supply, RoHS-compliant manufacturing, and long-term industrial lifecycle support.
Supply support for DG9431DY-T1-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, high-performance components for industrial and portable applications.
The DG9431 belongs to Vishay's low-voltage analog switch product line, engineered specifically for compact, battery-powered systems demanding low power, fast switching, and rail-to-rail signal handling without external biasing.
FAQ
What is the guaranteed break-before-make interval for DG9431DY-T1-E3?
The DG9431DY-T1-E3 guarantees break-before-make operation with a minimum dead time of 3 ns and maximum of 10 ns at 25 °C and V+ = 5 V, as verified by Vishay's test circuit Figure 2. This timing prevents signal shorting during state transitions and is process-guaranteed-not production-tested-per datasheet Note d. The DG9431DY-T1-E3 maintains this behavior across its full –40 °C to +85 °C operating range.
Does DG9431DY-T1-E3 support 3.3 V logic control with a 5 V analog supply?
Yes, DG9431DY-T1-E3 supports independent logic and analog supply domains: its digital input threshold is fixed at 0.8 V (low) and 2.4 V (high), making it fully compatible with 3.3 V CMOS logic driving a 5 V V+ rail. No level shifter is needed. The DG9431DY-T1-E3 maintains specified tON/tOFF and rDS(on) performance under this mixed-supply condition per the V+ = 5 V specification table.
What is the maximum analog signal voltage allowed on COM, NO, or NC pins of DG9431DY-T1-E3?
The DG9431DY-T1-E3 allows analog signals from 0 V to V+ on COM, NO, and NC pins-i.e., rail-to-rail operation. Absolute maximum rating permits –0.3 V to (V+ + 0.3 V), but sustained operation beyond 0 V to V+ risks forward-biasing internal clamping diodes. For reliable linear operation, keep signals strictly within 0 V to V+; the DG9431DY-T1-E3 is not designed for negative or overvoltage analog inputs.
Is DG9431DY-T1-E3 pin-compatible with other Vishay SPDT switches like DG9432 or DG9433?
No, DG9431DY-T1-E3 is not pin-compatible with DG9432 or DG9433. The DG9431DY-T1-E3 uses an SOIC-8 package with specific pin assignments (IN, NO, NC, GND, COM, V+, NC, NC), whereas DG9432 is a dual SPDT in SOIC-14 and DG9433 is a triple SPDT in TSSOP-16. Pin count, function mapping, and package footprint differ-PCB redesign is required for substitution.
What thermal derating applies to DG9431DY-T1-E3 above 75 °C?
DG9431DY-T1-E3 requires linear thermal derating of 6.5 mW/°C above 75 °C ambient, as specified in Note c of the Absolute Maximum Ratings table. At 100 °C ambient, maximum allowable power dissipation drops to 400 mW − (25 °C × 6.5 mW/°C) = 237.5 mW. This applies to both SOIC-8 and TSOP-6 packages; the DG9431DY-T1-E3 must be thermally modeled with board copper area and airflow to ensure junction temperature remains below 150 °C.
DG9431DY-T1-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-T1-E3 FAQ
1.How can I place an order for DG9431DY-T1-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG9431DY-T1-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-T1-E3 reliable?
The price and inventory of DG9431DY-T1-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-T1-E3 is usually 5 days.
3.What payment methods are accepted for DG9431DY-T1-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG9431DY-T1-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG9431DY-T1-E3?
DG9431DY-T1-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG9431DY-T1-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-T1-E3?
For technical support, including DG9431DY-T1-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG9431DY-T1-E3 requirements.
6.How does Aetrix verify that DG9431DY-T1-E3 is sourced from the original manufacturer or authorized distributors?
All DG9431DY-T1-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-T1-E3 meets industry standards.
7.What is the process for return or replacement of DG9431DY-T1-E3?
All DG9431DY-T1-E3 units undergo pre-shipment inspection (PSI). If there is an issue with DG9431DY-T1-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-T1-E3 part is unused and in its original packaging.
Return procedure for DG9431DY-T1-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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