My Inquiry
My Account
Vishay Siliconix DG409LEDQ-GE3
- Part No.:
- DG409LEDQ-GE3
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
DG409LEDQ-GE3.pdf
- Description:
- IC SWITCH SP4T X 2 23OHM 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,651
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DG409LEDQ-GE3 from Vishay Siliconix is a dual 4-channel differential analog multiplexer designed for precision signal routing in instrumentation and medical systems. It operates on single (3–16 V) or dual (±3–±8 V) supplies, delivers 15 Ω typical on-resistance at ±5 V, guarantees break-before-make switching, and supports TTL/CMOS/LV logic with 1 nA max off-leakage - ideal for low-power data acquisition front-ends.
For engineers reviewing the DG409LEDQ-GE3 datasheet, DG409LEDQ-GE3 pinout, DG409LEDQ-GE3 application, or DG409LEDQ-GE3 equivalent, key selection criteria include its differential 4:1 x 2 configuration, QFN16 (3 mm × 3 mm) package with exposed pad, -109 dB crosstalk at 100 kHz, and guaranteed tON/tOFF of 72 ns/50 ns under full temperature range (-40 °C to +85 °C).
Technical Context
The DG409LEDQ-GE3 implements a dual independent 4:1 differential switch architecture with separate A0/A1 address decoding per channel pair and shared EN control. Each 4-channel block routes one differential input (S1a/S1b through S4a/S4b) to common differential outputs (Da/Db), supporting bidirectional analog signal flow with rail-to-rail voltage handling up to ±5 V.
Its internal voltage regulator powers logic circuitry independently, enabling stable 6 μA max supply current across supply voltages and reducing system power dependency. Break-before-make timing (tOPEN ≥ 75 ns) is guaranteed to prevent transient crosstalk during channel transitions, and all digital inputs meet TTL-compatible thresholds across the full operating temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Configuration | Dual 4:1 differential analog multiplexer - two independent 4-input differential switch banks sharing one enable and address bus. |
| On-resistance (RDS(on)) | 15 Ω typ. at ±5 V - enables low insertion loss and minimal gain error in precision sensor signal paths. |
| Crosstalk | -109 dB at 100 kHz - ensures high channel isolation critical for multi-sensor differential measurements. |
| Switching time (tON/tOFF) | 72 ns / 50 ns max. over -40 °C to +85 °C - supports sampling rates up to ~10 MHz in automated test equipment. |
| Off-leakage current | ±5 nA max. at full temperature - preserves accuracy in high-impedance biomedical front-ends (e.g., ECG, EEG). |
| Supply range | Single: 3–16 V; Dual: ±3 V to ±8 V - accommodates battery-powered portable devices and industrial ±5 V rails. |
| Logic compatibility | TTL/CMOS/LV (3 V) - interfaces directly with microcontrollers, FPGAs, and ADC drivers without level-shifting. |
Pinout & Package
Package: 16-pin QFN (3 mm × 3 mm), exposed thermal pad (may be connected 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 A) | Positive-side analog inputs for four differential channels; conduct bidirectionally when selected. |
| 5 (Da) | Differential output (A-side) | Common positive output node for selected Sxa channel; routed to external differential receiver. |
| 6 (Db) | Differential output (B-side) | Common negative output node for selected Sxb channel; pairs with Da for balanced signal delivery. |
| 7, 8, 9, 10 (S1b–S4b) | Differential source inputs (Channel B) | Negative-side analog inputs corresponding to S1a–S4a; matched to maintain common-mode rejection. |
| 11 (EN) | Enable control input | Active-high logic input; resets all switches to OFF state when low - enables stacking and power-gating. |
| 12, 13 (A0, A1) | Binary address inputs | Selects one of four differential pairs (00→S1, 01→S2, 10→S3, 11→S4); TTL/CMOS compatible. |
| 14 (GND) | Analog/digital ground reference | Common return for logic and analog sections; decoupling recommended near pin. |
| 15 (V−) | Negative supply rail | Accepts 0 V (single-supply) or negative voltage (dual-supply); sets lower analog signal limit. |
| 16 (V+) | Positive supply rail | Accepts 3–16 V (single) or +3–+8 V (dual); powers analog switches and internal regulator. |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make guarantee | Prevents momentary shorting between adjacent differential channels during address changes - eliminates transient crosstalk in sensitive measurement systems. |
| Internal logic regulator | Decouples digital control power from analog supply rails, reducing supply noise coupling and enabling stable 6 μA max I+ across voltage ranges. |
| Differential 4:1 x 2 topology | Supports true differential signal routing without external baluns or op-amp buffering - preserves CMRR and reduces PCB area in medical sensors. |
| Low charge injection (-10 pC) | Minimizes voltage glitches at high-impedance nodes (e.g., ADC sample capacitors), improving DC accuracy in data acquisition. |
| ESD protection | ±2.5 kV HBM - enhances robustness during board assembly and field handling in portable healthcare devices. |
Applications
| Medical Instrumentation | Data Acquisition Systems |
|---|---|
Use Scenario: Multiplexing differential electrode signals from multi-lead ECG or EEG front-ends into a single ADC channel. IC Role / Device Role / Timing Role: Differential analog multiplexer providing rail-to-rail signal routing with <±5 nA leakage and -109 dB crosstalk. Use Value: Maintains clinical-grade common-mode rejection ratio (CMRR) and prevents inter-channel interference during real-time patient monitoring. | Use Scenario: Scanning multiple sensor outputs (thermocouples, strain gauges) in industrial PLC analog input modules. IC Role / Device Role / Timing Role: Dual 4:1 differential switch enabling sequential sampling of eight differential sensor pairs with synchronized enable control. Use Value: Eliminates need for discrete op-amp buffers per channel, reducing BOM cost and thermal drift in high-channel-count DAQ units. |
| Automatic Test Equipment | Battery-Powered Portable Devices |
Use Scenario: Routing calibrated reference signals and DUT outputs to precision metrology ADCs in benchtop multimeters. IC Role / Device Role / Timing Role: High-isolation analog switch with 72 ns tON supporting >10 MS/s multiplexed sampling sequences. Use Value: Enables fast, repeatable calibration sweeps without settling delays or cross-talk-induced measurement errors. | Use Scenario: Signal path selection in handheld ultrasound or point-of-care diagnostic devices powered by Li-ion batteries. IC Role / Device Role / Timing Role: Low-power analog multiplexer drawing only 6 μA max supply current while maintaining 15 Ω RDS(on) at 3.3 V. Use Value: Extends battery life without compromising signal fidelity - critical for FDA-cleared portable medical hardware. |
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 RDS(on); SOIC-16 only; no internal regulator. | Suitable for space-constrained single-bank routing but lacks dual independent channel capability. | Select when only one differential 4:1 path is needed and QFN footprint is not required. |
| ADG1419BRUZ | 12 Ω RDS(on); ±15 V dual-supply capable; TSSOP-16; higher 125 ns tON; no integrated logic regulator. | Better for high-voltage industrial sensing but less optimized for low-power portable designs. | Prefer for ±15 V systems where wider signal swing outweighs power and speed advantages of DG409LEDQ-GE3. |
Compared with MAX4619ESE+ and ADG1419BRUZ, the DG409LEDQ-GE3 uniquely combines dual independent 4:1 differential switching, QFN16 compactness, internal logic regulation for ultra-low I+, and guaranteed break-before-make - making it optimal for portable, multi-sensor medical and test equipment where size, power, and channel integrity are co-prioritized.
Availability
DG409LEDQ-GE3 is available at Aetrix Electronics and suitable for medical instrumentation, automated test equipment, and portable data acquisition systems requiring stable component supply, RoHS-compliant lead-free packaging, and long-term lifecycle support.
Supply support for DG409LEDQ-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 semiconductor manufacturer specializing in discrete components and analog ICs, with leadership in power MOSFETs, diodes, optoelectronics, and precision analog switches.
The DG409LEDQ-GE3 belongs to Vishay's high-performance analog multiplexer product line, engineered specifically for low-leakage, low-distortion signal routing in medical, instrumentation, and portable electronics where rail-to-rail operation and differential integrity are essential.
FAQ
What is the maximum supply voltage rating for DG409LEDQ-GE3?
The DG409LEDQ-GE3 supports single-supply operation up to 16 V and dual-supply operation up to ±8 V. Absolute maximum ratings specify V+ to V− ≤ 18 V, and exceeding these limits risks permanent damage. For reliable operation in medical or industrial environments, design margins should maintain V+ ≤ 15 V and |V−| ≤ 7.5 V.
Does DG409LEDQ-GE3 require external level-shifting for 3.3 V microcontroller control?
No - DG409LEDQ-GE3 features LV logic compatibility down to 3 V, with VINL ≤ 0.6 V and VINH ≥ 2.4 V at V+ = 5 V, ensuring direct interface with 3.3 V GPIOs without level shifters. Its internal regulator maintains consistent logic thresholds across supply voltages, simplifying mixed-voltage system design.
How is the exposed thermal pad on the QFN16 package of DG409LEDQ-GE3 intended to be used?
The exposed pad on DG409LEDQ-GE3 may be connected to GND, V−, or left floating based on thermal and noise requirements. Vishay recommends soldering it to a dedicated thermal pad tied to GND for optimal heat dissipation and noise suppression - especially critical in low-noise medical signal chains where thermal resistance must stay below 40 °C/W.
Is DG409LEDQ-GE3 pin-compatible with legacy DG409 variants?
Yes - DG409LEDQ-GE3 is pin-for-pin compatible with DG409 and DG509 in QFN16, SOIC16, and TSSOP16 packages. The "LE" suffix denotes enhanced performance (lower RDS(on), improved crosstalk), while "-GE3" confirms lead-free/RoHS compliance. No PCB layout changes are needed when upgrading from standard DG409 parts.
What is the guaranteed break-before-make interval for DG409LEDQ-GE3?
The DG409LEDQ-GE3 guarantees a minimum break-before-make time (tOPEN) of 75 ns at room temperature and 120 ns maximum over full -40 °C to +85 °C range under ±5 V dual-supply conditions. This ensures no overlap between channel conduction states, preventing transient short circuits in high-precision differential measurement paths.
DG409LEDQ-GE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tube
- 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-TSSOP
DG409LEDQ-GE3 FAQ
1.How can I place an order for DG409LEDQ-GE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for DG409LEDQ-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 DG409LEDQ-GE3 reliable?
The price and inventory of DG409LEDQ-GE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG409LEDQ-GE3 is usually 5 days.
3.What payment methods are accepted for DG409LEDQ-GE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG409LEDQ-GE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG409LEDQ-GE3?
DG409LEDQ-GE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG409LEDQ-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 DG409LEDQ-GE3?
For technical support, including DG409LEDQ-GE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG409LEDQ-GE3 requirements.
6.How does Aetrix verify that DG409LEDQ-GE3 is sourced from the original manufacturer or authorized distributors?
All DG409LEDQ-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 DG409LEDQ-GE3 meets industry standards.
7.What is the process for return or replacement of DG409LEDQ-GE3?
All DG409LEDQ-GE3 units undergo pre-shipment inspection (PSI). If there is an issue with DG409LEDQ-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 DG409LEDQ-GE3 part is unused and in its original packaging.
Return procedure for DG409LEDQ-GE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DG409LEDQ-GE3 Tags
-
SN74LVC1G3157DBVR
Texas Instruments
-
SN74LVC1G66DBVR
Texas Instruments
-
SN74LVC1G66DCKR
Texas Instruments
-
SN74LVC1G3157DSFR
Texas Instruments
-
1P1G3157QDCKRQ1
Texas Instruments
-
SN74LVC2G66DCUR
Texas Instruments
-
SN74LV4052APWR
Texas Instruments
-
74HC4051D,653
Nexperia USA Inc.
-
SN74LV4051APWR
Texas Instruments
-
CD74HC4052PWR
Texas Instruments
-
CD74HC4051PWR
Texas Instruments
-
TS5A3166DBVR
Texas Instruments
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
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…
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, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
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.
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.
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…
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…
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…
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 …
