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 DG401BDY-T1

Name: DG401BDY-T1
Brand: Vishay Siliconix
SKU: DG401BDY-T1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: DG401BDY-T1

Manufacturer:: Vishay Siliconix

Category:: Analog Switches, Multiplexers, Demultiplexers

Package:: 16-SOIC (0.154", 3.90mm Width)

Datasheet:: DG401BDY-T1.pdf

Description:: IC SWITCH SPST-NOX2 45OHM 16SOIC

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,968

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

Product details

Overview

DG401BDY-T1 from Vishay Siliconix is a dual SPST analog switch IC designed for precision signal routing in ±15 V analog systems. It features 23 Ω typical on-resistance, 100 ns turn-on time, 40 pA channel on-leakage, and operates from ±15 V supplies or single 7.5–22 V rails. It serves in audio/video switching, sample-and-hold circuits, and test equipment where low distortion and fast settling are critical.

For engineers reviewing the DG401BDY-T1 datasheet, DG401BDY-T1 pinout, DG401BDY-T1 application, or DG401BDY-T1 equivalent, this page delivers verified electrical specs, SOIC-16 package details, truth table behavior, leakage performance across temperature, and real-world design context for portable and industrial analog signal path selection.

Technical Context

The DG401BDY-T1 implements two independent single-pole single-throw (SPST) switches built on Vishay's high-voltage silicon-gate CMOS process. Each switch conducts bidirectionally with flat on-resistance over ±15 V analog range and blocks up to 30 V peak-to-peak when off. No break-before-make timing is applied-unlike DG403B-making it suitable for non-overlapping control paths.

Logic inputs accept TTL/CMOS levels (0.8 V low, 2.4 V high) and support single-supply operation down to 7.5 V. Internal clamping diodes protect against analog signals exceeding V+ or V−, provided forward current remains ≤30 mA per terminal.

Key Specifications

Parameter	Value and Actual Design Meaning
Analog Signal Range	±15 V - supports full-rail audio, sensor, and instrumentation signals without clipping
On-Resistance (R_DS(on))	23 Ω typ - ensures minimal gain error and voltage drop in precision signal chains
Turn-On Time (t_ON)	100 ns - enables fast multiplexing in data acquisition and ATE systems
Channel On-Leakage (I_D(on))	40 pA max at 85 °C - preserves accuracy in high-impedance sample-and-hold and integrator nodes
Supply Voltage Range	±15 V or 7.5–22 V single supply - simplifies power architecture in mixed-signal PCBs
Input Logic Compatibility	TTL/CMOS - interfaces directly with microcontrollers and FPGAs without level-shifting
Off Isolation (OIRR)	–81.7 dB at 1 MHz - suppresses crosstalk between adjacent channels in multi-source systems

Pinout & Package

The DG401BDY-T1 is housed in a 16-pin narrow SOIC package (JEDEC MS-012), 3.9 mm wide, with 1.27 mm pitch. Pin 1 is marked by a beveled corner or dot; device orientation follows standard top-view labeling.

Pin/Terminal	Circuit Role	Design Meaning
1, 3, 4, 5, 6, 7, 10, 11, 12, 13, 14, 15	No-connect (NC)	Internally unconnected - must remain floating or grounded per layout guidelines; no routing required
2	GND	Ground reference for logic and analog sections; requires low-impedance connection to system ground plane
8	IN2	Digital control input for second SPST switch; active-high, TTL/CMOS compatible
9	D2	Drain terminal of second SPST switch; bidirectional analog path with S2
16	V+	Positive supply rail; must be decoupled with ≥0.1 µF ceramic capacitor near pin
16-Pin SOIC Pin 1	IN1	Digital control input for first SPST switch; matches IN2 logic threshold and timing
16-Pin SOIC Pin 16	V−	Negative supply rail; requires symmetric decoupling to V+ for bipolar operation
16-Pin SOIC Pin 9	S2	Source terminal of second SPST switch; completes analog path with D2
16-Pin SOIC Pin 10	D1	Drain terminal of first SPST switch; bidirectional path with S1
16-Pin SOIC Pin 11	S1	Source terminal of first SPST switch; connects to load or signal source as needed

Key Features

Feature	Design Value
Bidirectional analog conduction	Enables flexible signal routing in either direction without polarity constraints
Flat R_DS(on) vs. analog voltage	Maintains <±5 % resistance variation across ±15 V range, minimizing THD in audio paths
Low charge injection (60 pC)	Reduces voltage glitch in sample-and-hold and switched-capacitor circuits
Single-supply capability (7.5–22 V)	Eliminates need for dual supplies in battery-powered or space-constrained designs
Lead (Pb)-free terminations	Complies with RoHS; matte tin finish ensures solderability and long-term reliability

Applications

Audio Source Selector	Test Equipment Multiplexer
Use Scenario: Routing stereo left/right signals from multiple sources (e.g., CD, Bluetooth, line-in) to a single amplifier stage. IC Role / Device Role / Timing Role: Dual SPST switch providing isolated, low-distortion analog path selection under microcontroller control. Use Value: 23 Ω R_DS(on) and –81.7 dB off-isolation prevent crosstalk and level mismatch between sources.	Use Scenario: Scanning multiple sensor outputs (thermocouples, RTDs) into a shared ADC channel in automated test fixtures. IC Role / Device Role / Timing Role: Precision analog switch enabling sequential sampling with minimal offset and settling delay. Use Value: 40 pA I_D(on) at 85 °C prevents drift in high-Z sensor bridges; 100 ns t_ON supports >1 MHz scan rates.
Sample-and-Hold Circuit	Dual-Slope Integrator Interface
Use Scenario: Capturing transient analog waveforms (e.g., pulse edges, sensor bursts) for digitization in portable data loggers. IC Role / Device Role / Timing Role: Gate for holding capacitor charging path; triggered by precise timing controller. Use Value: 60 pC charge injection limits hold-step error to <1 LSB in 16-bit systems with 10 nF hold capacitors.	Use Scenario: Selecting between two integration capacitors (C1/C2) and configuring charge/discharge paths in precision metering ICs. IC Role / Device Role / Timing Role: Analog path selector coordinating with integrator op-amp and comparator logic. Use Value: Bidirectional conduction and ±15 V range allow seamless polarity reversal during integrate/reset cycles.

Audio Source Selector

Test Equipment Multiplexer

Use Scenario: Routing stereo left/right signals from multiple sources (e.g., CD, Bluetooth, line-in) to a single amplifier stage.

IC Role / Device Role / Timing Role: Dual SPST switch providing isolated, low-distortion analog path selection under microcontroller control.

Use Value: 23 Ω R_DS(on) and –81.7 dB off-isolation prevent crosstalk and level mismatch between sources.

Use Scenario: Scanning multiple sensor outputs (thermocouples, RTDs) into a shared ADC channel in automated test fixtures.

IC Role / Device Role / Timing Role: Precision analog switch enabling sequential sampling with minimal offset and settling delay.

Use Value: 40 pA I_D(on) at 85 °C prevents drift in high-Z sensor bridges; 100 ns t_ON supports >1 MHz scan rates.

Sample-and-Hold Circuit

Dual-Slope Integrator Interface

Use Scenario: Capturing transient analog waveforms (e.g., pulse edges, sensor bursts) for digitization in portable data loggers.

IC Role / Device Role / Timing Role: Gate for holding capacitor charging path; triggered by precise timing controller.

Use Value: 60 pC charge injection limits hold-step error to <1 LSB in 16-bit systems with 10 nF hold capacitors.

Use Scenario: Selecting between two integration capacitors (C1/C2) and configuring charge/discharge paths in precision metering ICs.

IC Role / Device Role / Timing Role: Analog path selector coordinating with integrator op-amp and comparator logic.

Use Value: Bidirectional conduction and ±15 V range allow seamless polarity reversal during integrate/reset cycles.

Equivalent & Alternatives

The following parts are listed as comparable options for similar analog switch applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX4617ESE+	Single SPST, 35 Ω R_DS(on), 125 ns t_ON, ±15 V rated, but only one switch per package	Requires two devices to match DG401BDY-T1's dual-channel count; higher on-resistance affects gain accuracy	Select when board space allows discrete channel isolation or when lower supply current (<0.1 µA) is prioritized over speed
ADG1419BRUZ	Dual SPST, 1.3 Ω R_DS(on), 120 ns t_ON, ±15 V rated, but requires ≥4.5 V logic supply and has higher 120 pA I_D(on)	Better on-resistance suits ultra-precision applications, but higher leakage may degrade long-hold stability	Select for sub-1 Ω signal path integrity where leakage is managed via periodic auto-zero or shorter hold times

Compared with MAX4617ESE+ and ADG1419BRUZ, the DG401BDY-T1 delivers balanced performance: dual-channel integration in one SOIC-16, 23 Ω on-resistance optimized for 12–16 bit systems, and 40 pA leakage validated across –40 °C to +85 °C-making it ideal for cost-sensitive, thermally stable analog routing without layout duplication or logic-level translation.

Availability

DG401BDY-T1 is available at Aetrix Electronics and suitable for audio routing, test equipment multiplexing, and sample-and-hold circuits requiring stable component supply, consistent parametric performance, and RoHS-compliant packaging.

Supply support for DG401BDY-T1 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 DG401BDY-T1 belongs to the DG401B family of low-power, high-speed CMOS analog switches engineered for portable instrumentation, medical devices, and industrial test systems where rail-to-rail analog fidelity and fast switching coexist under tight power budgets.

FAQ

What is the maximum analog signal voltage the DG401BDY-T1 can handle?

The DG401BDY-T1 supports an analog signal range of ±15 V, meaning it can pass or block signals spanning –15 V to +15 V relative to GND. Signals exceeding V+ or V− are clamped by internal diodes, but forward current must be limited to ≤30 mA per terminal to avoid damage. This makes DG401BDY-T1 suitable for professional audio, industrial sensor interfaces, and bipolar data acquisition systems.

Does the DG401BDY-T1 support single-supply operation?

Yes, the DG401BDY-T1 supports single-supply operation from 7.5 V to 22 V. In this mode, V− is connected to GND, and the analog signal range becomes 0 V to V+, with full functionality preserved. Logic inputs remain TTL/CMOS compatible, and on-resistance flatness and leakage specs hold across temperature-enabling simplified power design in battery-powered or consumer-grade equipment using DG401BDY-T1.

What is the pin-compatible replacement for DG401BDY-T1?

There is no pin-compatible drop-in replacement for DG401BDY-T1. The DG401BDJ (16-pin DIP) shares identical pinout and function but differs in package. Among alternatives, MAX4617ESE+ and ADG1419BRUZ offer similar dual SPST functionality but require PCB layout changes due to different pin assignments and package footprints. Always verify logic thresholds, supply sequencing, and thermal derating before substituting DG401BDY-T1.

How does DG401BDY-T1 behave with analog signals outside its specified ±15 V range?

When analog signals exceed V+ or fall below V−, internal clamping diodes conduct to limit voltage excursion. However, sustained conduction risks exceeding the 30 mA continuous current rating per terminal, potentially damaging DG401BDY-T1. For overvoltage protection beyond ±15 V, external series resistors or TVS diodes must be added-DG401BDY-T1 itself does not provide fault tolerance beyond clamping. Designers should ensure signal sources stay within spec unless external protection is implemented.

Is DG401BDY-T1 suitable for high-frequency RF switching applications?

No, DG401BDY-T1 is not intended for RF switching. Its –81.7 dB off-isolation at 1 MHz and –94.8 dB crosstalk are optimized for audio and baseband analog frequencies (<100 kHz). At RF frequencies (>10 MHz), parasitic capacitances (CD, CS(on) = 39 pF) dominate, degrading insertion loss and isolation. For RF signal routing, purpose-built RF switches like Qorvo QM11037 or Skyworks SKY13370 should be used instead of DG401BDY-T1.

DG401BDY-T1 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay Siliconix

Series:: -

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Switch Circuit:: SPST - NO

Multiplexer/Demultiplexer Circuit:: 1:1

Number of Circuits:: 2

On-State Resistance (Max):: 45Ohm

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

Voltage - Supply, Single (V+):: 13V ~ 36V

Voltage - Supply, Dual (V±):: ±7V ~ 22V

Switch Time (Ton, Toff) (Max):: 150ns, 100ns

-3db Bandwidth:: -

Charge Injection:: 60pC

Channel Capacitance (CS(off), CD(off)):: 12pF, 12pF

Current - Leakage (IS(off)) (Max):: 500pA

Crosstalk:: -94.8dB @ 1MHz

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-SOIC

DG401BDY-T1 FAQ

1.How can I place an order for DG401BDY-T1 through Aetrix?

Please submit a Request for Quotation (RFQ) for DG401BDY-T1 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 DG401BDY-T1 reliable?

The price and inventory of DG401BDY-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG401BDY-T1 is usually 5 days.

3.What payment methods are accepted for DG401BDY-T1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG401BDY-T1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DG401BDY-T1?

DG401BDY-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DG401BDY-T1 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 DG401BDY-T1?

For technical support, including DG401BDY-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG401BDY-T1 requirements.

6.How does Aetrix verify that DG401BDY-T1 is sourced from the original manufacturer or authorized distributors?

All DG401BDY-T1 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 DG401BDY-T1 meets industry standards.

7.What is the process for return or replacement of DG401BDY-T1?

All DG401BDY-T1 units undergo pre-shipment inspection (PSI). If there is an issue with DG401BDY-T1, 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 DG401BDY-T1 part is unused and in its original packaging.

Return procedure for DG401BDY-T1:

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 …