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Vishay Siliconix DG9234EDY-T1-GE3
- Part No.:
- DG9234EDY-T1-GE3
- Manufacturer:
- Vishay Siliconix
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG9234EDY-T1-GE3.pdf
- Description:
- IC SW SPST-NO/NCX2 25OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,164
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Product details
Overview
DG9234EDY-T1-GE3 from Vishay Siliconix is a dual SPST analog switch with break-before-make timing, designed for precision signal routing in low-voltage instrumentation and healthcare systems. It features 17 Ω typical on-resistance at 5 V, 1 pC charge injection, 100 pA max on-leakage at 25 °C, and operates from +2.7 V to +5.5 V single supply - enabling high-fidelity signal path control in ADC front ends and sample-and-hold circuits.
For engineers reviewing the DG9234EDY-T1-GE3 datasheet, DG9234EDY-T1-GE3 pinout, DG9234EDY-T1-GE3 application, or DG9234EDY-T1-GE3 equivalent, key selection criteria include its normally-open/ normally-closed dual-switch configuration, SOIC-8 package compatibility, ESD tolerance (8 kV HBM), and verified performance in medical-grade low-leakage analog switching.
Technical Context
The DG9234EDY-T1-GE3 integrates two independent CMOS SPST switches with complementary logic states: switch-1 is normally open (NO), switch-2 is normally closed (NC), and switching follows strict break-before-make timing to prevent transient shorting. Its monolithic construction ensures matched RDS(on) (≤2 Ω max mismatch) and flat on-resistance (<6 Ω variation over 0–5 V signal range) across temperature.
Designed for rail-to-rail analog signal handling up to the positive supply, it supports bidirectional conduction with <3.8 pF off-capacitance and <7.8 pF on-capacitance, while maintaining 80 dB off-isolation at 1 MHz and −108 dB crosstalk - critical for multi-channel data acquisition and relay replacement in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance (RDS(on)) | 17 Ω typ. at 5 V - enables low insertion loss and minimal signal distortion in precision analog paths |
| Charge injection | 1 pC max - minimizes voltage glitch in sample-and-hold and switched-capacitor circuits |
| Switch leakage (on-state) | 100 pA max at 25 °C - preserves accuracy in high-impedance sensor interfaces and medical front ends |
| Supply range | +2.7 V to +5.5 V - supports direct interface with 3.3 V and 5 V logic and mixed-signal ICs |
| Switching time (tON/tOFF) | 32 ns / 10 ns typ. at 5 V - allows fast multiplexing in automated test equipment and real-time control loops |
| ESD tolerance (HBM) | 8 kV - ensures robustness during PCB handling and system-level ESD events without external protection |
| Off-isolation | −80 dB at 1 MHz - suppresses channel-to-channel interference in multi-signal routing applications |
Pinout & Package
Package: SOIC-8 (narrow body, JEDEC MS-012), 4.90 mm × 3.90 mm × 1.50 mm, lead (Pb)-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC1) | No-connect terminal | Internally unconnected; must be left floating or tied to GND per layout best practice |
| 2 (V+) | Positive supply rail | Accepts +2.7 V to +5.5 V; powers internal logic and switch driver circuitry |
| 3 (COM1) | Common terminal of switch-1 | Bidirectional analog/digital signal path for first SPST switch; connects to NO1 when enabled |
| 4 (IN1) | Control input for switch-1 | CMOS-compatible logic input: "0" ≤ 0.8 V turns switch-1 OFF (NO), "1" ≥ 2.4 V turns it ON |
| 5 (IN2) | Control input for switch-2 | CMOS-compatible logic input: "0" ≤ 0.8 V turns switch-2 ON (NC), "1" ≥ 2.4 V turns it OFF |
| 6 (COM2) | Common terminal of switch-2 | Bidirectional analog/digital signal path for second SPST switch; connects to NC2 when enabled |
| 7 (GND) | Ground reference | Analog and digital ground return; requires low-impedance connection to minimize noise coupling |
| 8 (NC2) | No-connect terminal | Internally unconnected; must be left floating or tied to GND per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make timing | Guaranteed non-overlapping conduction between switch-1 (NO) and switch-2 (NC) prevents momentary shorts in dual-path routing |
| Low parasitic capacitance | 3.8 pF off-capacitance and 7.8 pF on-capacitance minimize loading and bandwidth degradation in high-frequency signal paths |
| Rail-to-rail analog operation | Supports 0 V to V+ signal swing - enables full-scale use of ADC/DAC dynamic range without level-shifting |
| Ultra-low power consumption | 1 nW typical supply current - extends battery life in portable medical monitors and handheld test instruments |
| Latch-up immunity | >300 mA per JESD78 - ensures robust operation under transient overvoltage or ESD stress conditions |
Applications
| Medical Instrumentation | Data Acquisition Systems |
|---|---|
|
Use Scenario: Signal routing in portable ECG front-end modules requiring ultra-low leakage and minimal charge injection. IC Role / Device Role / Timing Role: Dual SPST switch isolates electrode inputs and routes signals to programmable gain amplifier stages with break-before-make sequencing. Use Value: 100 pA max on-leakage preserves microvolt-level biopotential integrity; 1 pC charge injection prevents baseline shift during sampling. |
Use Scenario: Multiplexing multiple sensor channels into a shared ADC in industrial process controllers. IC Role / Device Role / Timing Role: Precision analog switch providing low-RDS(on) signal path selection with matched on-resistance across channels. Use Value: 17 Ω RDS(on) and ≤2 Ω match ensure consistent gain scaling; 80 dB off-isolation prevents cross-talk between active/inactive channels. |
| Automatic Test Equipment | Battery-Powered Meters |
|
Use Scenario: Relay replacement in compact benchtop multimeters needing fast, solid-state switching with no contact wear. IC Role / Device Role / Timing Role: Dual SPST switch performs guarded measurements and signal path reconfiguration under microcontroller control. Use Value: 32 ns tON enables rapid test sequence execution; 8 kV HBM ESD rating eliminates need for external protection diodes. |
Use Scenario: Power management and signal conditioning in handheld pH meters and dissolved oxygen analyzers. IC Role / Device Role / Timing Role: Low-power analog switch controls biasing of electrochemical sensors and selects reference voltages. Use Value: 1 nW typical power draw extends operating time on coin-cell batteries; SOIC-8 footprint simplifies compact PCB layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4623EUA+ | Single-supply +2.7 V to +12 V; higher RDS(on) (35 Ω typ. at 5 V); no break-before-make guarantee | Suitable for wider supply ranges but lacks DG9234EDY-T1-GE3's precision timing and leakage performance | Select when extended voltage range outweighs need for sub-100 pA leakage and deterministic switching sequence |
| ADG721BRMZ | CMOS dual SPST with same SOIC-8 package; 4 Ω RDS(on) at 5 V but 2.5 pC charge injection and 500 pA leakage | Better on-resistance for low-loss paths, but higher charge injection limits use in precision sampling | Select when lowest on-resistance is critical and charge injection can be managed via system-level compensation |
Compared with MAX4623EUA+ and ADG721BRMZ, DG9234EDY-T1-GE3 uniquely balances ultra-low leakage (100 pA), minimal charge injection (1 pC), and guaranteed break-before-make timing - making it optimal for medical-grade signal integrity where timing predictability and DC accuracy are non-negotiable.
Availability
DG9234EDY-T1-GE3 is available at Aetrix Electronics and suitable for medical instrumentation, data acquisition systems, and automatic test equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for DG9234EDY-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 solutions for industrial, automotive, and medical markets.
The DG9234EDY-T1-GE3 belongs to Vishay's precision analog switch family, engineered specifically for low-leakage, low-charge-injection signal routing in battery-powered and safety-critical measurement systems.
FAQ
What is the switching configuration of DG9234EDY-T1-GE3?
DG9234EDY-T1-GE3 implements a dual SPST architecture with complementary logic: switch-1 is normally open (NO), switch-2 is normally closed (NC), and both operate with guaranteed break-before-make timing. This configuration prevents momentary shorting during state transitions - a critical requirement in precision analog routing where signal integrity must be preserved during reconfiguration. The truth table confirms IN1 = "1" closes switch-1, while IN2 = "0" closes switch-2.
Does DG9234EDY-T1-GE3 support rail-to-rail analog signal operation?
Yes, DG9234EDY-T1-GE3 supports rail-to-rail analog signal operation from 0 V to V+, with full functionality across the +2.7 V to +5.5 V supply range. At V+ = 5 V, the analog signal range is specified as 0 V to 5 V; at V+ = 3 V, it is 0 V to 3 V. This capability allows direct interfacing with ADCs, DACs, and op-amps without external level-shifting circuitry - simplifying design in low-voltage instrumentation where headroom is constrained.
What is the maximum allowable leakage current for DG9234EDY-T1-GE3 at 85 °C?
Per the datasheet, DG9234EDY-T1-GE3 guarantees ≤5000 pA (5 nA) maximum on-state leakage current (ICOM(on)) across the full −40 °C to +85 °C temperature range. At 25 °C, the limit is tighter: ≤200 pA. This wide-temperature specification ensures reliable performance in medical devices and industrial equipment exposed to ambient thermal variations, while maintaining signal fidelity in high-impedance sensor interfaces.
Is DG9234EDY-T1-GE3 compatible with 3.3 V logic control signals?
Yes, DG9234EDY-T1-GE3 is fully compatible with 3.3 V logic control signals. Its digital inputs are TTL/CMOS-compatible with logic "0" defined as ≤0.8 V and logic "1" as ≥2.4 V - well within standard 3.3 V logic thresholds (0 V/3.3 V). No level-shifting is required when driven by microcontrollers, FPGAs, or ASICs operating at 3.3 V, reducing BOM count and layout complexity in mixed-voltage systems.
What package type is used for DG9234EDY-T1-GE3?
DG9234EDY-T1-GE3 uses an 8-pin narrow-body SOIC package (JEDEC MS-012), measuring 4.90 mm × 3.90 mm × 1.50 mm. It is lead (Pb)-free and RoHS-compliant, with tape-and-reel packaging (2500 units per reel). This industry-standard footprint ensures drop-in compatibility with existing SOIC-8 layouts and supports automated assembly processes without requiring board redesign.
DG9234EDY-T1-GE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPST - NO/NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 25Ohm
- Channel-to-Channel Matching (ΔRon):
- 400mOhm
- Voltage - Supply, Single (V+):
- 2.7V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 75ns, 50ns
- -3db Bandwidth:
- -
- Charge Injection:
- -0.78pC
- Channel Capacitance (CS(off), CD(off)):
- 3.8pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -108dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
DG9234EDY-T1-GE3 FAQ
1.How can I place an order for DG9234EDY-T1-GE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG9234EDY-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 DG9234EDY-T1-GE3 reliable?
The price and inventory of DG9234EDY-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 DG9234EDY-T1-GE3 is usually 5 days.
3.What payment methods are accepted for DG9234EDY-T1-GE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG9234EDY-T1-GE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG9234EDY-T1-GE3?
DG9234EDY-T1-GE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG9234EDY-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 DG9234EDY-T1-GE3?
For technical support, including DG9234EDY-T1-GE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG9234EDY-T1-GE3 requirements.
6.How does Aetrix verify that DG9234EDY-T1-GE3 is sourced from the original manufacturer or authorized distributors?
All DG9234EDY-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 DG9234EDY-T1-GE3 meets industry standards.
7.What is the process for return or replacement of DG9234EDY-T1-GE3?
All DG9234EDY-T1-GE3 units undergo pre-shipment inspection (PSI). If there is an issue with DG9234EDY-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 DG9234EDY-T1-GE3 part is unused and in its original packaging.
Return procedure for DG9234EDY-T1-GE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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