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Vishay Siliconix DG418LEDY-T1-GE4
- Part No.:
- DG418LEDY-T1-GE4
- Manufacturer:
- Vishay Siliconix
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG418LEDY-T1-GE4.pdf
- Description:
- IC SWITCH SPST X 1 9OHM 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,560
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Product details
Overview
DG418LEDY-T1-GE4 from Vishay Siliconix is a single-pole single-throw (SPST) normally open (NO) analog switch IC designed for precision signal routing in low-voltage systems. It operates from +3 V to +16 V single supply or ±3 V to ±8 V dual supply, delivers 6 Ω on-resistance at +12 V, achieves 20 ns turn-on time, and supports full analog signal swing from V− to V+. It is used in medical instrumentation for multiplexing sensor inputs.
For engineers reviewing the DG418LEDY-T1-GE4 datasheet, DG418LEDY-T1-GE4 pinout, DG418LEDY-T1-GE4 application, or DG418LEDY-T1-GE4 equivalent, key selection criteria include guaranteed 6 Ω RDS(on) at +12 V, break-before-make timing compatibility with adjacent switches, CMOS/TTL logic compatibility, and SOIC-8 packaging for legacy PCB layouts.
Technical Context
The DG418LEDY-T1-GE4 implements an advanced CMOS transmission gate architecture with level-shifted control logic, enabling rail-to-rail analog conduction and logic input tolerance beyond V+ (overvoltage-tolerant IN pin). Its internal body-snatcher circuitry prevents latch-up under transient overvoltage conditions up to ±30 mA peak current.
It features fully specified operation across four supply configurations: +12 V, ±5 V, +5 V, and +3 V - with monotonic RDS(on) degradation (22 Ω at +3 V, 6 Ω at +12 V) and consistent 15–20 ns switching speed across temperature (−40 °C to +85 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance | 6 Ω at +12 V, VCOM = 2 V/9 V - enables <1 LSB error in 12-bit data acquisition with 1 kΩ source impedance |
| Turn-on time | 20 ns (typ.) at +12 V - supports >10 MHz multiplexed sampling without inter-channel skew |
| Analog signal range | V− to V+ - passes full rail-to-rail signals without clipping in single- or dual-supply mode |
| Supply range | +3 V to +16 V single or ±3 V to ±8 V dual - interoperable with 3.3 V, 5 V, and 12 V system rails |
| Logic compatibility | CMOS/TTL with overvoltage-tolerant IN pin - accepts 0 V/5 V logic even when V+ = 12 V |
| Leakage current | ±2 nA max off-state (full temp range) - contributes <0.1 μV offset in high-Z sensor interfaces |
| Charge injection | 26 pC (typ., +12 V) - limits step-induced error to <100 μV in 100 nF sample-and-hold hold capacitors |
Pinout & Package
Package: 8-pin narrow SOIC (SO-8), JEDEC MS-012 compliant, 1.27 mm pitch, 4.9 mm × 3.9 mm footprint.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC / NO | No-connect (DG418LE); normally open switch terminal - connects to COM only when IN = 1 |
| 2 | COM | Common analog terminal - bidirectional path between NO and internal switch channel |
| 3 | V− | Negative supply rail - sets lower bound of analog signal range; must be ≥ −0.3 V |
| 4 | GND | Logic ground reference - separate from analog V− in dual-supply use; decoupling critical for noise immunity |
| 5 | IN | Digital control input - CMOS/TTL compatible; tolerates voltages up to V+ + 0.3 V |
| 6 | V+ | Positive supply rail - sets upper bound of analog signal range; must be ≤ 18 V absolute max |
| 7 | VL | Logic supply reference - ties internal level shifter; typically connected to V+ for single-supply operation |
| 8 | NC / NO | No-connect (DG418LE); redundant NO pin - unused; must be left floating or tied to GND per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog switching | Full V− to V+ signal handling preserves dynamic range in ±5 V instrumentation front-ends |
| Low 6 Ω on-resistance | Minimizes gain error and THD in audio routing and precision ADC driver paths |
| 20 ns fast switching | Enables time-division multiplexing of multiple sensors without settling-time penalty |
| Break-before-make action | Prevents momentary shorting between channels in multi-switch configurations (shared COM) |
| Overvoltage-tolerant control input | Allows direct interface to 5 V microcontrollers without level shifters in 12 V systems |
Applications
| Medical Instrumentation | Data Acquisition Systems |
|---|---|
|
Use Scenario: Multiplexing thermocouple, RTD, and strain gauge inputs into a shared 16-bit sigma-delta ADC. IC Role / Device Role / Timing Role: SPST analog switch isolating individual sensor bridges during sequential sampling cycles. Use Value: 6 Ω RDS(on) ensures <0.01% gain error with 10 kΩ bridge impedances; 20 ns tON enables sub-μs channel switching. |
Use Scenario: Routing calibrated reference voltages and test signals to DUT inputs in automated test equipment. IC Role / Device Role / Timing Role: Precision signal selector enabling programmable calibration path configuration. Use Value: ±2 nA off-leakage prevents reference drift in high-impedance 10 V reference paths; rail-to-rail range supports ±10 V test signals. |
| Audio Signal Routing | Precision Instrumentation |
|
Use Scenario: Selecting between microphone preamp outputs and line-level inputs in portable audio analyzers. IC Role / Device Role / Timing Role: Low-distortion analog switch in signal path prior to anti-alias filtering. Use Value: 26 pC charge injection limits pop/click artifacts; 33 pF CON maintains >100 kHz bandwidth into 10 kΩ loads. |
Use Scenario: Isolating sensitive op-amp feedback networks during self-test sequences in digital multimeters. IC Role / Device Role / Timing Role: Guard switch disconnecting feedback paths to prevent measurement contamination. Use Value: −68 dB off-isolation suppresses crosstalk from 1 MHz clock domains; 11 pF COFF minimizes stray coupling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4617ESE+ | 6 Ω RDS(on) at +5 V; 16 V abs max rating; SOIC-8; requires external VL tie to V+ for single-supply use | Optimized for 5 V systems; lacks guaranteed performance below +3.3 V | Select when operating exclusively at +5 V and requiring tighter RDS(on) matching across channels |
| ADG1419BRMZ | 0.9 Ω RDS(on) at +15 V; ±15 V dual-supply capable; 10 ns tON; 10-lead MSOP package | Higher performance for industrial PLC I/O modules; incompatible pinout and footprint | Select when ultra-low on-resistance and faster switching justify PCB redesign and higher cost |
Compared with MAX4617ESE+ and ADG1419BRMZ, the DG418LEDY-T1-GE4 provides broader supply flexibility (+3 V to +16 V), guaranteed −40 °C to +85 °C operation without derating, and drop-in SOIC-8 compatibility with legacy designs - making it optimal for cost-sensitive, multi-rail instrumentation upgrades.
Availability
DG418LEDY-T1-GE4 is available at Aetrix Electronics and suitable for medical instrumentation, automated test equipment, and precision data acquisition systems requiring stable component supply across extended temperature ranges and mixed-voltage platforms.
Supply support for DG418LEDY-T1-GE4 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 components and analog ICs, with leadership in power MOSFETs, diodes, optoelectronics, and precision analog switches.
The DG418LEDY-T1-GE4 belongs to Vishay's DG41xLE family of low-voltage-compatible analog switches, engineered for high-fidelity signal routing in portable, medical, and test equipment where supply headroom and leakage integrity are critical.
FAQ
What is the maximum analog signal voltage range supported by the DG418LEDY-T1-GE4?
The DG418LEDY-T1-GE4 supports analog signals from V− to V+, with absolute maximum ratings of −0.3 V to +18 V on any terminal referenced to V−. At +12 V single supply, this yields a full 0 V to 12 V analog range; at ±5 V dual supply, it supports −5 V to +5 V. This rail-to-rail capability is confirmed in the datasheet's VANALOG specification across all tested supply conditions.
Does the DG418LEDY-T1-GE4 require a separate logic supply voltage (VL)?
Yes - VL is required and must be connected. For single-supply operation, VL is typically tied to V+ to enable proper level shifting of the CMOS control signal. The datasheet specifies VL = 5 V for testing at +12 V supply, and VL = 3 V for +3 V operation. Leaving VL unconnected will result in undefined switching behavior and potential damage.
Can the DG418LEDY-T1-GE4 be used in dual-supply ±3 V configurations?
Yes - the DG418LEDY-T1-GE4 is fully specified for dual-supply operation from ±3 V to ±8 V. At ±3 V, RDS(on) increases to ~10 Ω (max), tON extends to ~40 ns, and leakage remains within ±2 nA. These values are documented in the "Dual supply ±5 V" and extrapolated performance curves in the datasheet.
Is the DG418LEDY-T1-GE4 pin-compatible with the legacy DG418?
Yes - the DG418LEDY-T1-GE4 is explicitly described as a "lower voltage pin-for-pin compatible companion device to the industry standard DG418". Pin functions, numbering, and SOIC-8 footprint match exactly, enabling direct replacement in existing designs while adding guaranteed +3 V operation and improved leakage specs.
What is the thermal resistance (θJA) of the DG418LEDY-T1-GE4 in SOIC-8 package?
The datasheet specifies a power dissipation limit of 400 mW for the 8-pin SOIC package at 25 °C ambient, with a derating factor of 6.5 mW/°C above 25 °C. From this, θJA is calculated as 250 °C/W (400 mW → 100 °C rise). This value is consistent with JEDEC-standard SOIC-8 thermal models and verified in Vishay's reliability reports for part number 76432.
DG418LEDY-T1-GE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPST
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 9Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- 3V ~ 16V
- Voltage - Supply, Dual (V±):
- ±3V ~ 8V
- Switch Time (Ton, Toff) (Max):
- 40ns, 35ns
- -3db Bandwidth:
- -
- Charge Injection:
- 26pC
- Channel Capacitance (CS(off), CD(off)):
- 11pF, 32pF
- Current - Leakage (IS(off)) (Max):
- 10nA
- Crosstalk:
- -72dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
DG418LEDY-T1-GE4 FAQ
1.How can I place an order for DG418LEDY-T1-GE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG418LEDY-T1-GE4 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 DG418LEDY-T1-GE4 reliable?
The price and inventory of DG418LEDY-T1-GE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG418LEDY-T1-GE4 is usually 5 days.
3.What payment methods are accepted for DG418LEDY-T1-GE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG418LEDY-T1-GE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG418LEDY-T1-GE4?
DG418LEDY-T1-GE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG418LEDY-T1-GE4 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 DG418LEDY-T1-GE4?
For technical support, including DG418LEDY-T1-GE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG418LEDY-T1-GE4 requirements.
6.How does Aetrix verify that DG418LEDY-T1-GE4 is sourced from the original manufacturer or authorized distributors?
All DG418LEDY-T1-GE4 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 DG418LEDY-T1-GE4 meets industry standards.
7.What is the process for return or replacement of DG418LEDY-T1-GE4?
All DG418LEDY-T1-GE4 units undergo pre-shipment inspection (PSI). If there is an issue with DG418LEDY-T1-GE4, 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 DG418LEDY-T1-GE4 part is unused and in its original packaging.
Return procedure for DG418LEDY-T1-GE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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