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

Vishay Siliconix DG451EQ-T1-E3

Name: DG451EQ-T1-E3
Brand: Vishay Siliconix
SKU: DG451EQ-T1-E3
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DG451EQ-T1-E3

Manufacturer:: Vishay Siliconix

Category:: Analog Switches, Multiplexers, Demultiplexers

Package:: 16-TSSOP (0.173", 4.40mm Width)

Datasheet:: DG451EQ-T1-E3.pdf

Description:: IC SW SPST-NCX4 5.3OHM 16TSSOP

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Product details

Overview

DG451EQ-T1-E3 from Vishay Siliconix is a high-voltage quad SPST analog switch with normally closed (NC) configuration, designed for precision signal routing in ±15 V dual-supply or 12 V single-supply systems. It delivers 4 Ω typical on-resistance, 0.2 Ω typical on-resistance flatness, and supports ±15 V analog signal swing - enabling low-distortion audio switching and relay replacement in test equipment.

For engineers reviewing the DG451EQ-T1-E3 datasheet, DG451EQ-T1-E3 pinout, DG451EQ-T1-E3 application, or DG451EQ-T1-E3 equivalent, key selection criteria include verified 100 mA continuous current handling, 80 ns turn-on time, TTL/CMOS-compatible logic thresholds, and confirmed TSSOP-16 package compatibility with DG411-series drop-in replacements.

Technical Context

The DG451EQ-T1-E3 implements four independent CMOS transmission gates with symmetrical bidirectional conduction and rail-to-rail analog voltage handling up to ±15 V. Its control logic is non-inverting (Logic 0 = ON), distinguishing it from the DG452 (inverting) and DG453 (dual NC/NO) variants in the same family.

It operates across -40 °C to +125 °C with ultra-low 18 µW power dissipation, fully specified at ±5 V, ±15 V, and 12 V supply configurations. Internal ESD protection (2 kV HBM) and clamping diodes support robust operation in industrial signal-switching environments without external protection circuitry.

Key Specifications

Parameter	Value and Actual Design Meaning
On-resistance	4 Ω typical - ensures minimal insertion loss and signal attenuation in precision analog paths
On-resistance flatness	0.2 Ω typical - maintains consistent gain and THD < 0.04 % across full ±10 V signal range
Turn-on / Turn-off time	80 ns / 60 ns - enables reliable video-rate switching and fast data acquisition sampling
Analog signal range	±15 V - supports full-rail operation with dual ±15 V supplies, eliminating level-shifting needs
Supply voltage max	44 V (V+ to V−) - provides margin for transient overvoltage in industrial control interfaces
Continuous current	100 mA per channel - sufficient for driving 600 Ω audio loads or relay coils directly
Logic compatibility	TTL/CMOS - accepts 0.8 V low / 2.4 V high thresholds with VL = 5 V, simplifying microcontroller interfacing

Pinout & Package

Package: 16-pin TSSOP (JEDEC MS-012, 4.4 mm × 5.0 mm × 1.2 mm height), RoHS-compliant, moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
IN1–IN4	Digital control inputs	Active-low logic: INx = 0 V → corresponding switch ON (NC path closed)
S1–S4	Source terminals	Common (NC) connection points - tied internally to D1–D4 when switch is ON
D1–D4	Drain terminals	Normally open outputs - conduct to Sx only when respective INx = 0 V
V+	Positive supply	Bias for high-side switches; supports up to +16.5 V (absolute max +20 V)
V−	Negative supply	Bias for low-side switches; supports down to -16.5 V (absolute max -20 V)
GND	Analog ground reference	Return path for leakage currents and substrate bias; separate from digital VL ground
VL	Logic supply	Independent 5 V supply for control logic - isolates digital noise from analog signal paths

Key Features

Feature	Design Value
Rail-to-rail analog conduction	Switches conduct equally in both directions with signal range extending to V+ and V− rails - eliminates polarity constraints in AC-coupled systems
Ultra-low charge injection	22 pC typical - minimizes voltage glitch during switching in sample-and-hold and multiplexed ADC front-ends
Low THD	0.04 % at 5 VRMS, 20 Hz–20 kHz - preserves fidelity in professional audio routing applications
Pin compatibility	Direct replacement for DG411 - allows legacy design upgrades without PCB rework or layout changes
High off-isolation	-60 dB at 1 MHz - prevents crosstalk between channels in multi-signal test instrumentation

Applications

Audio Signal Routing	Precision Test Equipment
Use Scenario: Switching line-level stereo signals between multiple DACs, amplifiers, or measurement instruments in studio-grade audio interfaces. IC Role / Device Role / Timing Role: Quad SPST NC switch providing low-noise, low-THD signal path selection with no DC bias dependency. Use Value: 4 Ω R_ON and 0.04 % THD ensure transparent signal transfer; 0.2 Ω flatness prevents frequency-dependent amplitude variation across 20 Hz–20 kHz.	Use Scenario: Multiplexing sensor inputs or calibration references into a high-resolution data acquisition system with auto-ranging capability. IC Role / Device Role / Timing Role: Precision analog switch enabling channel scanning at up to 10 kSPS while maintaining <10 nA leakage and minimal settling error. Use Value: ±15 V signal range accommodates industrial sensor outputs; 22 pC charge injection limits hold-step error to <25 µV with 1 nF sampling capacitor.
Relay Replacement	Video Signal Switching
Use Scenario: Replacing electromechanical relays in programmable power supply output routing or battery management system isolation circuits. IC Role / Device Role / Timing Role: Solid-state SPST switch delivering 100 mA continuous current per channel with zero contact bounce and infinite cycle life. Use Value: 44 V absolute max V+–V− rating supports 36 V industrial bus isolation; 80 ns t_ON enables real-time fault response faster than mechanical relays by >1000×.	Use Scenario: Routing composite or component video signals (e.g., CVBS, YPbPr) in broadcast monitoring gear or medical imaging displays. IC Role / Device Role / Timing Role: High-bandwidth analog switch supporting >100 MHz signal bandwidth with -60 dB off-isolation and -85 dB crosstalk. Use Value: 103 pF channel-on capacitance and fast 80 ns/60 ns switching preserve rise/fall times in 75 Ω video lines; rail-to-rail operation avoids clipping of sync pulses.

Audio Signal Routing

Precision Test Equipment

Use Scenario: Switching line-level stereo signals between multiple DACs, amplifiers, or measurement instruments in studio-grade audio interfaces.

IC Role / Device Role / Timing Role: Quad SPST NC switch providing low-noise, low-THD signal path selection with no DC bias dependency.

Use Value: 4 Ω R_ON and 0.04 % THD ensure transparent signal transfer; 0.2 Ω flatness prevents frequency-dependent amplitude variation across 20 Hz–20 kHz.

Use Scenario: Multiplexing sensor inputs or calibration references into a high-resolution data acquisition system with auto-ranging capability.

IC Role / Device Role / Timing Role: Precision analog switch enabling channel scanning at up to 10 kSPS while maintaining <10 nA leakage and minimal settling error.

Use Value: ±15 V signal range accommodates industrial sensor outputs; 22 pC charge injection limits hold-step error to <25 µV with 1 nF sampling capacitor.

Relay Replacement

Video Signal Switching

Use Scenario: Replacing electromechanical relays in programmable power supply output routing or battery management system isolation circuits.

IC Role / Device Role / Timing Role: Solid-state SPST switch delivering 100 mA continuous current per channel with zero contact bounce and infinite cycle life.

Use Value: 44 V absolute max V+–V− rating supports 36 V industrial bus isolation; 80 ns t_ON enables real-time fault response faster than mechanical relays by >1000×.

Use Scenario: Routing composite or component video signals (e.g., CVBS, YPbPr) in broadcast monitoring gear or medical imaging displays.

IC Role / Device Role / Timing Role: High-bandwidth analog switch supporting >100 MHz signal bandwidth with -60 dB off-isolation and -85 dB crosstalk.

Use Value: 103 pF channel-on capacitance and fast 80 ns/60 ns switching preserve rise/fall times in 75 Ω video lines; rail-to-rail operation avoids clipping of sync pulses.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
DG411DJ-E3	Same NC function, SOIC-16 package, higher 600 mW power dissipation rating	Better thermal performance in high-density layouts; not TSSOP footprint compatible	Select when board space allows SOIC and higher ambient temperature operation (>75 °C) is required
MAX4511ESE+	Pin-compatible TSSOP-16, 35 Ω R_ON, ±20 V max supply, 100 ns t_ON	Higher on-resistance and slower switching limit use in high-fidelity audio or fast DAQ	Choose only if Vishay supply continuity is constrained and moderate-performance switching suffices

Compared with DG451EQ-T1-E3, DG411DJ-E3 offers superior thermal derating but requires PCB redesign for SOIC; MAX4511ESE+ retains TSSOP-16 fit but trades 8.75× higher R_ON and 25 % slower switching - making DG451EQ-T1-E3 optimal for low-distortion, high-speed analog routing where footprint and performance are jointly critical.

Availability

DG451EQ-T1-E3 is available at Aetrix Electronics and suitable for precision test equipment, professional audio interfaces, and industrial relay-replacement designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for DG451EQ-T1-E3 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 MOSFETs, diodes, optoelectronics, and precision analog switches with emphasis on high-reliability industrial and automotive applications.

The DG451 series belongs to Vishay's high-voltage analog switch product line, engineered specifically for low-distortion, rail-to-rail signal routing in automated test equipment, medical instrumentation, and broadcast systems demanding sub-0.05 % THD and nanosecond switching.

FAQ

What is the maximum analog signal voltage range supported by DG451EQ-T1-E3?

DG451EQ-T1-E3 supports an analog signal range of ±15 V when operated with dual ±15 V supplies, and 0 V to +12 V with a unipolar 12 V supply. This rail-to-rail capability allows direct interfacing with industrial sensors and legacy audio equipment without external level-shifting circuitry. The device's internal structure ensures symmetrical conduction and minimal distortion across the full range.

Is DG451EQ-T1-E3 pin-compatible with older DG411 variants?

Yes, DG451EQ-T1-E3 is explicitly pin-compatible with DG411, DG412, and DG413 according to Vishay's datasheet (Document 74470, Rev. E). The TSSOP-16 footprint, pin numbering, and terminal functions match identically - enabling drop-in replacement in existing designs without layout modification or firmware changes.

What logic supply voltage does DG451EQ-T1-E3 require for TTL/CMOS compatibility?

DG451EQ-T1-E3 requires a dedicated 5 V logic supply (VL) to achieve TTL/CMOS compatibility, with guaranteed switching thresholds of 0.8 V (low) and 2.4 V (high). This separate VL rail isolates digital noise from analog signal paths and ensures reliable operation even when analog supplies operate at ±15 V or 12 V.

How does DG451EQ-T1-E3 handle bidirectional analog signals?

DG451EQ-T1-E3 conducts equally well in both directions when ON due to its symmetrical CMOS transmission gate architecture. Each switch has identical on-resistance (4 Ω typical) and flatness (0.2 Ω typical) regardless of signal flow direction - making it ideal for AC-coupled audio, differential sensor interfaces, and bidirectional data buses where polarity independence is essential.

What thermal derating applies to DG451EQ-T1-E3 in TSSOP-16 package?

In its 16-pin TSSOP package, DG451EQ-T1-E3 has a thermal resistance of 178 °C/W and a maximum power dissipation of 450 mW at +70 °C ambient. Above +70 °C, power must be linearly derated by 5.6 mW/°C - meaning usable power drops to ~394 mW at +80 °C and ~338 mW at +90 °C. This reflects its suitability for compact, convection-cooled industrial modules.

DG451EQ-T1-E3 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay Siliconix

Series:: -

Packaging:: Tape & Reel (TR)

Product Status:: Active

Switch Circuit:: SPST - NC

Multiplexer/Demultiplexer Circuit:: 1:1

Number of Circuits:: 4

On-State Resistance (Max):: 5.3Ohm

Channel-to-Channel Matching (ΔRon):: 120mOhm

Voltage - Supply, Single (V+):: 12V ~ 36V

Voltage - Supply, Dual (V±):: ±5V ~ 15V

Switch Time (Ton, Toff) (Max):: 118ns, 97ns

-3db Bandwidth:: -

Charge Injection:: 22pC

Channel Capacitance (CS(off), CD(off)):: 31pf, 34pF

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

Crosstalk:: -85dB @ 1MHz

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-TSSOP

DG451EQ-T1-E3 FAQ

1.How can I place an order for DG451EQ-T1-E3 through Aetrix?

Please submit a Request for Quotation (RFQ) for DG451EQ-T1-E3 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 DG451EQ-T1-E3 reliable?

The price and inventory of DG451EQ-T1-E3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG451EQ-T1-E3 is usually 5 days.

3.What payment methods are accepted for DG451EQ-T1-E3?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG451EQ-T1-E3 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DG451EQ-T1-E3?

DG451EQ-T1-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DG451EQ-T1-E3 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 DG451EQ-T1-E3?

For technical support, including DG451EQ-T1-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG451EQ-T1-E3 requirements.

6.How does Aetrix verify that DG451EQ-T1-E3 is sourced from the original manufacturer or authorized distributors?

All DG451EQ-T1-E3 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 DG451EQ-T1-E3 meets industry standards.

7.What is the process for return or replacement of DG451EQ-T1-E3?

All DG451EQ-T1-E3 units undergo pre-shipment inspection (PSI). If there is an issue with DG451EQ-T1-E3, 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 DG451EQ-T1-E3 part is unused and in its original packaging.

Return procedure for DG451EQ-T1-E3:

1.Submit a request within 90 days.

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

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