Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Interface > Analog Switches, Multiplexers, Demultiplexers

Vishay Siliconix DG409LEDN-T1-GE4

Name: DG409LEDN-T1-GE4
Brand: Vishay Siliconix
SKU: DG409LEDN-T1-GE4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: DG409LEDN-T1-GE4

Manufacturer:: Vishay Siliconix

Category:: Analog Switches, Multiplexers, Demultiplexers

Package:: 16-VFQFN Exposed Pad

Datasheet:: DG409LEDN-T1-GE4.pdf

Description:: IC SWITCH SP4T X 2 23OHM 16QFN

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:4,941

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

DG409LEDN-T1-GE4 from Vishay Siliconix is a dual 4-channel differential analog multiplexer designed for precision signal routing in battery-powered and low-power instrumentation systems. It operates on single supplies (3–16 V) or dual supplies (±3 V to ±8 V), features 15 Ω typical on-resistance, 72 ns max enable turn-on time, and break-before-make switching - enabling reliable channel isolation in medical data acquisition and automated test equipment.

For engineers reviewing the DG409LEDN-T1-GE4 datasheet, DG409LEDN-T1-GE4 pinout, DG409LEDN-T1-GE4 application, or DG409LEDN-T1-GE4 equivalent, key selection criteria include its differential 4:1 x 2 configuration, QFN16 (3 mm × 3 mm) package with exposed pad, guaranteed break-before-make timing, -109 dB crosstalk at 100 kHz, and compatibility with TTL/CMOS/LV logic down to 3 V.

Technical Context

The DG409LEDN-T1-GE4 implements two independent 4:1 differential analog multiplexers, each controlled by a 2-bit binary address (A0, A1) and shared enable (EN). Its internal voltage regulator powers logic circuitry, reducing supply current to 6 μA max and enabling stable operation across wide voltage ranges without external level-shifting.

Each channel conducts bidirectionally with matched R_DS(on) (ΔR_DS ≤ 3 Ω), low charge injection (−10 pC), and rail-to-rail analog signal handling (±5 V dual, 0–5 V single). Off-isolation reaches −87 dB (DG409LE, 100 kHz), optimized via layout-aware design where worst-case isolation occurs on Channel 4 due to proximity to drain pins.

Key Specifications

Parameter	Value and Actual Design Meaning
Analog Configuration	Dual 4:1 differential multiplexer - routes one of four differential input pairs to a common dual output, supporting balanced signal integrity.
On-Resistance	15 Ω typ. at ±5 V dual supply - ensures minimal signal attenuation and gain error in precision measurement paths.
Switching Speed	t_ON(EN) = 72 ns max - enables high-throughput channel scanning in data acquisition systems sampling >10 MSPS.
Crosstalk	−109 dB at 100 kHz - suppresses inter-channel interference critical for multi-sensor biomedical front-ends.
Supply Range	Single: 3–16 V; Dual: ±3 V to ±8 V - supports direct integration with Li-ion (3.7 V), USB (5 V), and industrial ±5 V rails.
Leakage Current	I_S(OFF) ≤ 5 nA max (−40 °C to +85 °C) - preserves accuracy in high-impedance sensor interfaces (e.g., pH electrodes, thermopiles).
Logic Compatibility	TTL/CMOS/LV compatible (V_INL ≤ 0.6 V, V_INH ≥ 2.4 V at 5 V) - interfaces directly with microcontrollers and FPGAs without level shifters.

Pinout & Package

Package: QFN-16 (3 mm × 3 mm), variation 2, with exposed thermal pad (connectable to GND, V−, or left floating per design requirements).

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4 (S1a–S4a)	Differential source inputs (Channel 1–4, side A)	Accepts one leg of differential analog inputs; must be paired with corresponding Sxa pins for common-mode rejection.
5, 6, 7, 8 (S1b–S4b)	Differential source inputs (Channel 1–4, side B)	Completes differential pair routing; matched parasitics to Sxa pins ensure <1% gain mismatch across channels.
9 (Da)	Differential output (side A)	Delivers selected channel's A-side signal to downstream instrumentation amplifier or ADC driver.
10 (Db)	Differential output (side B)	Delivers complementary B-side signal; maintains phase coherence with Da for noise cancellation.
11 (A0), 12 (A1)	Binary address inputs	Selects active channel (00→Ch1, 01→Ch2, 10→Ch3, 11→Ch4); CMOS-compatible thresholds prevent false switching.
13 (EN)	Enable control	Active-high; resets all switches to OFF state when low - essential for stacking multiple DG409LE devices in large MUX arrays.
14 (GND)	Ground reference	Logic and analog ground return; ties to PCB ground plane beneath exposed pad for EMI suppression.
15 (V−)	Negative supply rail	Supports dual-supply operation; must be decoupled locally to minimize switching noise coupling into analog paths.
16 (V+)	Positive supply rail	Powers analog switches and internal regulator; internal regulation reduces I⁺ to 6 μA max, extending battery life.

Key Features

Feature	Design Value
Break-before-make guarantee	Prevents momentary shorting between adjacent differential channels during switching - eliminates crosstalk spikes in sensitive EEG or ECG amplifiers.
Internal logic regulator	Reduces total supply current to ≤6 μA at 5 V - enables >10-year battery operation in portable diagnostic devices.
Rail-to-rail analog range	Supports full ±5 V (dual) or 0–5 V (single) signal swing - eliminates need for external biasing in sensor front-ends.
Low charge injection (−10 pC)	Minimizes voltage glitches at ADC inputs during channel changes - critical for high-resolution (≥16-bit) successive-approximation converters.
ESD protection	±2.5 kV HBM - withstands handling and board-level ESD events without latch-up or parameter shift in clinical environments.

Applications

Medical Instrumentation	Automated Test Equipment
Use Scenario: Routing differential signals from multiple biopotential sensors (ECG, EMG) to a single high-precision ADC in a handheld patient monitor. IC Role / Device Role / Timing Role: Dual 4:1 differential multiplexer providing channel-selectable, low-noise signal path with guaranteed break-before-make timing. Use Value: −109 dB crosstalk prevents cross-talk between cardiac and muscular signals; 15 Ω R_DS(on) ensures <0.01% gain error across 12-bit to 16-bit measurements.	Use Scenario: Scanning 8-channel analog stimulus/response paths in benchtop functional testers for mixed-signal ICs. IC Role / Device Role / Timing Role: Two independent 4:1 differential MUXes enabling simultaneous routing of stimulus and response signals with matched delay. Use Value: 72 ns t_ON(EN) allows sub-14 MHz channel update rates; rail-to-rail support accommodates ±10 V test signals without clipping.
Data Acquisition Systems	Battery-Powered Portable Devices
Use Scenario: Multiplexing thermocouple, RTD, and strain gauge inputs in an industrial DAQ module with cold-junction compensation. IC Role / Device Role / Timing Role: Differential analog switch isolating high-impedance sensor nodes while rejecting common-mode noise on long cables. Use Value: 5 nA max I_S(OFF) prevents offset drift in µV-level thermocouple readings; QFN16 package minimizes board area in space-constrained modules.	Use Scenario: Signal routing in a handheld ultrasound probe with integrated beamforming ASIC and rechargeable Li-ion battery. IC Role / Device Role / Timing Role: Low-power differential MUX selecting transducer elements while maintaining SNR in analog front-end chain. Use Value: 6 μA max I⁺ extends battery runtime; −87 dB off-isolation prevents RF leakage from transmit pulses into receive paths.

Medical Instrumentation

Automated Test Equipment

Use Scenario: Routing differential signals from multiple biopotential sensors (ECG, EMG) to a single high-precision ADC in a handheld patient monitor.

IC Role / Device Role / Timing Role: Dual 4:1 differential multiplexer providing channel-selectable, low-noise signal path with guaranteed break-before-make timing.

Use Value: −109 dB crosstalk prevents cross-talk between cardiac and muscular signals; 15 Ω R_DS(on) ensures <0.01% gain error across 12-bit to 16-bit measurements.

Use Scenario: Scanning 8-channel analog stimulus/response paths in benchtop functional testers for mixed-signal ICs.

IC Role / Device Role / Timing Role: Two independent 4:1 differential MUXes enabling simultaneous routing of stimulus and response signals with matched delay.

Use Value: 72 ns t_ON(EN) allows sub-14 MHz channel update rates; rail-to-rail support accommodates ±10 V test signals without clipping.

Data Acquisition Systems

Battery-Powered Portable Devices

Use Scenario: Multiplexing thermocouple, RTD, and strain gauge inputs in an industrial DAQ module with cold-junction compensation.

IC Role / Device Role / Timing Role: Differential analog switch isolating high-impedance sensor nodes while rejecting common-mode noise on long cables.

Use Value: 5 nA max I_S(OFF) prevents offset drift in µV-level thermocouple readings; QFN16 package minimizes board area in space-constrained modules.

Use Scenario: Signal routing in a handheld ultrasound probe with integrated beamforming ASIC and rechargeable Li-ion battery.

IC Role / Device Role / Timing Role: Low-power differential MUX selecting transducer elements while maintaining SNR in analog front-end chain.

Use Value: 6 μA max I⁺ extends battery runtime; −87 dB off-isolation prevents RF leakage from transmit pulses into receive paths.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual differential analog multiplexer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX4619ESE+	Single 4:1 differential MUX (not dual); 12 Ω R_DS(on); SOIC-16 only; no internal regulator (I_CC = 100 nA).	Requires two devices for dual-path routing; higher leakage (10 nA) limits use in ultra-low-drift applications.	Choose when lower on-resistance outweighs power savings and dual-channel integration.
ADG1419BRUZ	Dual 4:1 differential MUX; 10 Ω R_DS(on); TSSOP-16; 100 nA I_CC; no break-before-make guarantee.	Higher supply current reduces battery life; lack of B-B-M timing risks transient shorts in safety-critical medical designs.	Choose for highest bandwidth (>200 MHz) and lowest on-resistance where power and timing guarantees are secondary.

Compared with MAX4619ESE+ and ADG1419BRUZ, the DG409LEDN-T1-GE4 uniquely combines dual 4:1 differential routing, internal logic regulation (6 μA I⁺), guaranteed break-before-make, and QFN16 footprint - making it optimal for compact, battery-operated, safety-compliant medical and portable instrumentation.

Availability

DG409LEDN-T1-GE4 is available at Aetrix Electronics and suitable for medical instrumentation, automated test equipment, portable data acquisition, and battery-powered diagnostic devices requiring stable component supply across extended product lifecycles.

Supply support for DG409LEDN-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 leader in discrete semiconductors and passive components, specializing in high-reliability analog switches, MOSFETs, and precision resistors for demanding industrial and medical applications.

The DG409LEDN-T1-GE4 belongs to Vishay's high-performance analog multiplexer product line, engineered specifically for low-leakage, low-distortion signal routing in portable, battery-powered, and safety-critical measurement systems.

FAQ

What is the maximum operating temperature range for the DG409LEDN-T1-GE4?

The DG409LEDN-T1-GE4 is rated for operation from −40 °C to +85 °C (industrial temperature range). All electrical specifications - including R_DS(on), leakage current, and switching times - are guaranteed across this full range, making DG409LEDN-T1-GE4 suitable for deployment in uncontrolled environments such as field-deployable medical analyzers and outdoor test gear.

Can the exposed thermal pad on the DG409LEDN-T1-GE4 QFN package be left floating?

Yes, the exposed pad on the DG409LEDN-T1-GE4 QFN package may be left floating, connected to GND, or tied to V− depending on system requirements. Vishay specifies that grounding the pad improves thermal performance and EMI immunity, while connecting it to V− can reduce substrate coupling in high-gain analog stages. Floating is acceptable if thermal and noise constraints permit.

Does the DG409LEDN-T1-GE4 support single-supply operation with a 3.3 V rail?

Yes, the DG409LEDN-T1-GE4 fully supports 3.3 V single-supply operation. At V+ = 3.3 V, it delivers R_DS(on) ≤ 92 Ω, t_ON(EN) ≤ 180 ns, and maintains TTL/CMOS logic compatibility (V_INL ≤ 0.4 V, V_INH ≥ 2.0 V). This makes DG409LEDN-T1-GE4 ideal for interfacing with 3.3 V microcontrollers in portable health monitors.

How does the break-before-make timing work in the DG409LEDN-T1-GE4?

The DG409LEDN-T1-GE4 guarantees break-before-make switching via internal decoder timing control. When address bits change, the previously selected channel turns OFF before the new channel turns ON - preventing momentary shorting between differential inputs. Measured t_OPEN is ≥1 ns (typical 84 ns at ±5 V), ensuring robust isolation even during rapid channel scanning in real-time DAQ systems.

Is the DG409LEDN-T1-GE4 RoHS-compliant and lead-free?

Yes, the "-GE4" suffix in DG409LEDN-T1-GE4 indicates lead-free and RoHS-compliant construction per EU Directive 2011/65/EU. The device uses matte tin (Sn) termination finish and complies with Vishay's material categorization standard (document 99912). Full compliance documentation and test reports are available upon request from Aetrix Electronics.

DG409LEDN-T1-GE4 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay Siliconix

Series:: -

Packaging:: Tape & Reel (TR)

Product Status:: Active

Switch Circuit:: SP4T

Multiplexer/Demultiplexer Circuit:: 4:1

Number of Circuits:: 2

On-State Resistance (Max):: 23Ohm

Channel-to-Channel Matching (ΔRon):: 1Ohm

Voltage - Supply, Single (V+):: 3V ~ 16V

Voltage - Supply, Dual (V±):: ±3.3V ~ 8V

Switch Time (Ton, Toff) (Max):: 72ns, 47ns

-3db Bandwidth:: -

Charge Injection:: -10pC

Channel Capacitance (CS(off), CD(off)):: 5.5pF, 13.5pF

Current - Leakage (IS(off)) (Max):: 1nA

Crosstalk:: -109dB @ 100kHz

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-QFN (3x3)

DG409LEDN-T1-GE4 FAQ

1.How can I place an order for DG409LEDN-T1-GE4 through Aetrix?

Please submit a Request for Quotation (RFQ) for DG409LEDN-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 DG409LEDN-T1-GE4 reliable?

The price and inventory of DG409LEDN-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 DG409LEDN-T1-GE4 is usually 5 days.

3.What payment methods are accepted for DG409LEDN-T1-GE4?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG409LEDN-T1-GE4 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DG409LEDN-T1-GE4?

DG409LEDN-T1-GE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DG409LEDN-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 DG409LEDN-T1-GE4?

For technical support, including DG409LEDN-T1-GE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG409LEDN-T1-GE4 requirements.

6.How does Aetrix verify that DG409LEDN-T1-GE4 is sourced from the original manufacturer or authorized distributors?

All DG409LEDN-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 DG409LEDN-T1-GE4 meets industry standards.

7.What is the process for return or replacement of DG409LEDN-T1-GE4?

All DG409LEDN-T1-GE4 units undergo pre-shipment inspection (PSI). If there is an issue with DG409LEDN-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 DG409LEDN-T1-GE4 part is unused and in its original packaging.

Return procedure for DG409LEDN-T1-GE4:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-11 Comparator Circuit: Voltage Thresholds, Op-Amp Differences, LM393 and Practical Design

Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.

2026-09-10 Schmitt Trigger Explained: Hysteresis, Circuits, Inverters and Applications

Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …