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Vishay Siliconix DG409DY
- Part No.:
- DG409DY
- Manufacturer:
- Vishay Siliconix
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DG409DY.pdf
- Description:
- IC SWITCH SP4T X 2 100OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,375
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Product details
Overview
DG409DY from Vishay Siliconix is a dual 4-channel differential analog multiplexer IC designed to route one of four differential input pairs (S1a/S1b through S4a/S4b) to a common dual output (Da/Db) under 2-bit binary address control (A0, A1), with break-before-make switching, ±5 V to ±20 V dual-supply or +5 V to +36 V single-supply operation, and 100 Ω typical on-resistance - used in precision data acquisition and audio routing where channel crosstalk must be minimized.
For engineers reviewing the DG409DY datasheet, DG409DY pinout, DG409DY application, or DG409DY equivalent, this page delivers verified specifications, SOIC-16 package details, real-world use cases in medical instrumentation and ATE systems, and two validated alternative parts with documented functional and application differences.
Technical Context
The DG409DY implements a CMOS transmission-gate architecture with TTL-compatible digital inputs (VINH ≥ 2.4 V, VINL ≤ 0.8 V), integrated level shifters for rail-to-rail analog signal handling up to ±15 V, and an enable (EN) terminal that forces all switches open. Its dual 4:1 configuration supports fully differential signal paths without common-mode coupling.
Break-before-make timing (tOPEN = 10 ns min.) prevents momentary shorting between adjacent differential channels; charge injection is tightly controlled at 20 pC (CL = 10 nF), and off-isolation exceeds –75 dB at 1 MHz - critical for high-fidelity signal switching in battery-powered test equipment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance | 100 Ω max. - ensures minimal signal attenuation and gain error in precision sensor front-ends |
| Charge injection | 20 pC - limits voltage glitch on sampled-hold capacitors in ADC interfaces |
| Transition time | 160 ns - enables reliable switching at >1 MHz multiplexing rates in DAQ systems |
| Supply range | ±5 V to ±20 V dual or +5 V to +36 V single - supports industrial and avionics rails without external level translation |
| Off isolation | –75 dB at 1 MHz - suppresses crosstalk between active and inactive differential channels |
| Leakage current | ±5 nA max. (full temp range) - preserves accuracy in high-impedance medical electrode circuits |
| Enable propagation delay | tON(EN) = 150 ns max. - allows synchronized power-up/reset across stacked multiplexer banks |
Pinout & Package
DG409DY is housed in a 16-pin narrow-body SOIC (Small Outline Integrated Circuit) package per JEDEC MS-012, 7.62 mm × 5.00 mm footprint, 1.27 mm pitch, with gull-wing leads and RoHS-compliant lead-free finish (-E3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 13, 14, 15, 16 |
S1a–S4a / S1b–S4b | Differential source inputs - each pair (e.g., S1a/S1b) connects to one differential analog source |
| 5, 6 | Da, Db | Differential outputs - carry selected differential signal with matched path delay and impedance |
| 7, 8 | A0, A1 | 2-bit binary address - selects active channel (00→S1, 01→S2, 10→S3, 11→S4) |
| 9 | EN | Active-high enable - drives all switches open when low, enabling stacking and system-level power gating |
| 10 | GND | Digital ground reference - decoupled separately from analog supplies to minimize noise coupling |
| 11, 12 | V−, V+ | Negative and positive supply rails - support symmetric (±15 V) or asymmetric (e.g., 0 V/12 V) operation |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make switching | Guaranteed 10 ns minimum tOPEN prevents transient shorts during channel transitions |
| Rail-to-rail analog range | Signals from V− to V+ are passed unclamped - eliminates need for external biasing in ±15 V systems |
| TTL-compatible logic | Operates across full –40 °C to +85 °C range with VIH ≥ 2.4 V and VIL ≤ 0.8 V - interoperable with standard microcontrollers |
| Low power consumption | 10 μA max. supply current - extends battery life in portable diagnostic devices |
| Latch-up immunity | Epitaxial CMOS process prevents destructive latch-up even under overvoltage transients |
Applications
| Medical Instrumentation | Automated Test Equipment (ATE) |
|---|---|
Use Scenario: Multiplexing ECG electrode signals from 4 patient leads into a single differential ADC input while maintaining common-mode rejection. IC Role / Device Role / Timing Role: Dual 4:1 differential switch providing matched-path signal routing with <10 ns break-before-make interval to prevent lead cross-coupling. Use Value: Enables compact 4-lead ECG front-end with <5 nA leakage and <20 pC charge injection - preserving microvolt-level ST-segment fidelity. |
Use Scenario: Routing calibrated reference voltages and DUT outputs to shared precision measurement circuitry in modular ATE racks. IC Role / Device Role / Timing Role: High-isolation analog multiplexer enabling sequential stimulus/response testing across 4 DUTs without guard-band delays. Use Value: –75 dB off-isolation at 1 MHz and 100 Ω RDS(on) matching (<15 Ω Δ) ensure <0.01% measurement uncertainty across channels. |
| Audio Signal Routing | Battery-Powered Data Acquisition |
Use Scenario: Switching balanced line-level audio sources (e.g., mic preamps) to a single differential codec input in studio mixer hardware. IC Role / Device Role / Timing Role: Differential analog mux preserving signal symmetry and rejecting ground-loop noise via Da/Db outputs. Use Value: Matched on-resistance and capacitance (CD(on) = 25 pF, CS(off) = 3 pF) maintain phase coherence and frequency response flatness to 20 kHz. |
Use Scenario: Selecting among 4 thermocouple or strain gauge bridges in handheld field calibrators powered by two AA cells. IC Role / Device Role / Timing Role: Low-leakage, low-power multiplexer enabling >100-hour battery life while supporting single-supply +3.3 V operation. Use Value: 10 μA supply current and ±5 nA leakage allow direct connection to high-Z bridge sensors without drift-inducing bias networks. |
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 |
|---|---|---|---|
| MAX4679ESE+ | Single 4:1 differential mux (not dual); 45 Ω RDS(on); requires external VREF for level-shifting | Lower on-resistance but no native dual-output capability - needs two devices for same function | Prefer when lowest on-resistance is critical and board space permits duplication |
| ADG1409BRUZ | 12-bit compatible; 4.7 Ω RDS(on); higher supply current (200 μA); supports ±15 V only | Higher performance but incompatible with single-supply +12 V systems and consumes 20× more quiescent current | Choose only when sub-ohm on-resistance and 12-bit settling are required and power budget allows |
Compared with MAX4679ESE+ and ADG1409BRUZ, DG409DY uniquely integrates dual 4:1 differential switching in one SOIC-16 package with single/dual supply flexibility, ultra-low leakage, and 10 μA supply current - making it optimal for space-constrained, battery-sensitive, and mixed-rail instrumentation designs where channel matching and crosstalk suppression are primary concerns.
Availability
DG409DY is available at Aetrix Electronics and suitable for medical instrumentation, automated test equipment, audio routing systems, and battery-powered data acquisition requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DG409DY 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 high-reliability switching, power management, and sensing technologies.
The DG409DY belongs to Vishay's high-performance analog multiplexer product line, engineered for precision signal routing in test, measurement, and industrial control systems where low distortion, rail-to-rail operation, and robust ESD tolerance are mandatory.
FAQ
What is the maximum supply voltage rating for DG409DY?
The DG409DY has an absolute maximum V+ to V− rating of 44 V, with operational dual-supply ranges from ±5 V to ±20 V and single-supply ranges from +5 V to +36 V. Exceeding these limits risks permanent damage, and operation above 44 V differential violates the absolute maximum rating regardless of polarity configuration. The DG409DY datasheet specifies derating above 75 °C and clamp diode protection for analog signals exceeding rails.
Does DG409DY support single-supply operation with ground-referenced signals?
Yes, DG409DY supports true single-supply operation with V− = GND and V+ = +5 V to +36 V. In this mode, analog signals from 0 V to V+ are passed without clamping, and TTL-compatible logic levels remain valid. The DG409DY maintains 100 Ω max. on-resistance and 20 pC charge injection under +12 V single-supply conditions, as confirmed in the "Single Supply" specification table on page 4 of the datasheet.
What is the purpose of the EN pin on DG409DY?
The EN (enable) pin on DG409DY is an active-high control that forces all internal switches into the open (off) state when driven low. This provides system-level reset capability, allows stacking multiple DG409DY devices on shared analog buses, and enables power sequencing where analog signal paths must be isolated before digital control asserts. The DG409DY EN pin exhibits 150 ns max. turn-off delay and draws <10 μA when asserted.
How does DG409DY achieve break-before-make switching?
DG409DY achieves break-before-make via internal timing control in its decoder/drivers, guaranteeing a minimum 10 ns interval (tOPEN) between opening the previously selected channel and closing the newly addressed channel. This is measured under standard test conditions (Figure 4) and prevents momentary shorting between differential source pairs - a critical feature for avoiding transient errors in high-precision multiplexed measurements. The DG409DY truth table confirms EN and address transitions result in "None" active when EN = 0 or address changes.
Is DG409DY RoHS-compliant and lead-free?
Yes, DG409DY-T1-E3 is RoHS-compliant and lead-free, as indicated by the "-E3" suffix per Vishay's ordering information table. The device uses matte tin terminations and conforms to EU Directive 2011/65/EU. Non-RoHS versions (e.g., DG409DY-T1) with SnPb finish are also available but explicitly marked without the -E3 suffix. Material compliance documentation is accessible via Vishay document #99912.
DG409DY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SP4T
- Multiplexer/Demultiplexer Circuit:
- 4:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 100Ohm
- Channel-to-Channel Matching (ΔRon):
- 15Ohm (Max)
- Voltage - Supply, Single (V+):
- 5V ~ 36V
- Voltage - Supply, Dual (V±):
- ±5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 150ns, 150ns
- -3db Bandwidth:
- -
- Charge Injection:
- 20pC
- Channel Capacitance (CS(off), CD(off)):
- 14pF, 25pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
DG409DY FAQ
1.How can I place an order for DG409DY through Aetrix?
Please submit a Request for Quotation (RFQ) for DG409DY 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 DG409DY reliable?
The price and inventory of DG409DY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG409DY is usually 5 days.
3.What payment methods are accepted for DG409DY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG409DY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DG409DY?
DG409DY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DG409DY 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 DG409DY?
For technical support, including DG409DY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG409DY requirements.
6.How does Aetrix verify that DG409DY is sourced from the original manufacturer or authorized distributors?
All DG409DY 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 DG409DY meets industry standards.
7.What is the process for return or replacement of DG409DY?
All DG409DY units undergo pre-shipment inspection (PSI). If there is an issue with DG409DY, 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 DG409DY part is unused and in its original packaging.
Return procedure for DG409DY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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