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 DG333ADJ

Name: DG333ADJ
Brand: Vishay Siliconix
SKU: DG333ADJ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: DG333ADJ

Manufacturer:: Vishay Siliconix

Category:: Analog Switches, Multiplexers, Demultiplexers

Package:: 20-DIP (0.300", 7.62mm)

Datasheet:: DG333ADJ.pdf

Description:: IC SWITCH SPDT X 4 45OHM 20DIP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,594

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

Product details

Overview

DG333ADJ from Vishay Siliconix is a precision quad SPDT analog switch IC designed for high-accuracy signal routing in instrumentation and test systems. It features 25 Ω typical on-resistance, 175 ns max turn-on time, ±22 V dual-supply operation, and break-before-make switching - enabling rail-to-rail analog signal control in battery-powered and industrial measurement applications.

For engineers reviewing the DG333ADJ datasheet, DG333ADJ pinout, DG333ADJ application, or DG333ADJ equivalent, key selection criteria include on-resistance matching (<2 Ω), low charge injection (10 pC typ.), leakage performance (0.25 nA max off-leakage), and compatibility with TTL/CMOS logic levels across -40 °C to +85 °C.

Technical Context

The DG333ADJ implements four independent SPDT switches fabricated in Vishay's HVSG-2 CMOS process, supporting both bipolar (±4 V to ±22 V) and unipolar (5 V to 40 V) supply configurations. Each channel conducts bidirectionally with matched on-resistance and flat R_DS(on) (Δ < 3 Ω over ±5 V signal range).

Its improved charge injection compensation minimizes switching transients, while epitaxial layer construction prevents latchup. Pin 15 is not connected - a defining mechanical and electrical distinction from the DG333AL variant which uses Pin 15 as VL (logic supply).

Key Specifications

Parameter	Value and Actual Design Meaning
Analog signal range	Full rail-to-rail: V− to V+ - supports ±22 V dual-supply or 5–40 V single-supply operation without signal clipping.
Channel on-resistance	25 Ω typ. at ±15 V - ensures minimal insertion loss and voltage drop in precision signal paths.
On-resistance match	<2 Ω max between channels - critical for matched gain/attenuation in multi-channel instrumentation.
Charge injection	10 pC max - limits voltage glitch during switching in sampled-data systems like switched-capacitor filters.
Turn-on time	175 ns max - enables reliable operation up to ~2 MHz clock rates in timing-critical analog multiplexing.
Off-leakage current	0.25 nA max at 85 °C - preserves accuracy in high-impedance sensor interfaces and integrator circuits.
Logic compatibility	TTL/CMOS: VIH ≥ 2.4 V, VIL ≤ 0.8 V - simplifies interface with microcontrollers and FPGAs without level-shifting.

Pinout & Package

DG333ADJ is housed in a 20-pin plastic DIP (dual-in-line package) with 0.300-inch wide body per Vishay Doc. 71262. Pin 15 is not connected (NC), distinguishing it from DG333AL which uses Pin 15 as VL.

Pin/Terminal	Circuit Role	Design Meaning
1, 4, 5, 8, 13, 14, 17, 18	Switch terminals (S/D pairs)	Eight analog I/O pins grouped as four SPDT switch pairs (S1/D1 through S4/D4); bidirectional conduction when enabled.
2, 3, 6, 7, 10, 11, 16, 19	Control inputs (IN1–IN4, S1–S8)	Four independent digital control inputs (IN1–IN4) drive eight internal switch drivers (S1–S8) per truth table.
9, 12	Power supplies (V+, V−)	Accept ±4 V to ±22 V dual supply or 5–40 V single supply; define full analog signal swing range.
15	No connect (NC)	Physically present but internally unconnected - must be left floating or grounded per layout best practice.
20	GND	Analog/digital reference common - requires low-impedance connection to system ground plane for noise immunity.

Key Features

Feature	Design Value
Rail-to-rail signal handling	Supports analog signals from V− to V+ without clipping - essential for full-scale sensor output routing.
Break-before-make switching	Guaranteed 5 ns minimum t_D - prevents momentary short-circuit between source paths during state transitions.
Low distortion architecture	Flat on-resistance (Δ < 3 Ω) and low charge injection (10 pC) minimize harmonic and transient distortion in audio and measurement paths.
Latchup-immune process	HVSG-2 CMOS with epitaxial isolation - eliminates risk of destructive latchup under overvoltage or ESD stress.
ESD tolerance	>2 kV per MIL-STD-3015.7 - enhances robustness in benchtop test equipment and field-deployable instruments.

Applications

Audio Switching	Test Equipment Multiplexing
Use Scenario: Routing line-level stereo signals between multiple sources (DACs, codecs, amplifiers) in professional audio mixers. IC Role / Device Role / Timing Role: Quad SPDT analog switch providing channel-selectable signal path with minimal crosstalk and THD degradation. Use Value: 80 dB channel-to-channel crosstalk and <3 Ω R_DS(on) flatness preserve stereo imaging and dynamic range across all four switch banks.	Use Scenario: Automated signal routing in benchtop multimeters and parameter analyzers requiring nanovolt-level accuracy and low leakage. IC Role / Device Role / Timing Role: Precision analog multiplexer enabling sequential measurement of high-impedance sensors (e.g., pH electrodes, thermocouples) without loading error. Use Value: 0.25 nA max off-leakage and 25 Ω on-resistance ensure measurement integrity even at >10 MΩ source impedances.
Portable Instrumentation	Switched-Capacitor Filter Banks
Use Scenario: Battery-powered handheld oscilloscopes and data loggers needing low-power signal conditioning and channel selection. IC Role / Device Role / Timing Role: Low-quiescent-current analog switch enabling rail-to-rail input stage configuration with minimal standby power draw. Use Value: 200 μA max I+ supply current at 25 °C allows >100-hour operation on AA batteries in sleep-mode instrument architectures.	Use Scenario: Programmable band-pass filter implementation using capacitor arrays switched at 100 kHz–1 MHz clock frequencies. IC Role / Device Role / Timing Role: High-speed, low-charge-injection switch controlling capacitor connections in discrete-time filter topologies. Use Value: 10 pC charge injection and 175 ns switching enable stable filter center frequency accuracy within ±0.5% over temperature.

Audio Switching

Test Equipment Multiplexing

Use Scenario: Routing line-level stereo signals between multiple sources (DACs, codecs, amplifiers) in professional audio mixers.

IC Role / Device Role / Timing Role: Quad SPDT analog switch providing channel-selectable signal path with minimal crosstalk and THD degradation.

Use Value: 80 dB channel-to-channel crosstalk and <3 Ω R_DS(on) flatness preserve stereo imaging and dynamic range across all four switch banks.

Use Scenario: Automated signal routing in benchtop multimeters and parameter analyzers requiring nanovolt-level accuracy and low leakage.

IC Role / Device Role / Timing Role: Precision analog multiplexer enabling sequential measurement of high-impedance sensors (e.g., pH electrodes, thermocouples) without loading error.

Use Value: 0.25 nA max off-leakage and 25 Ω on-resistance ensure measurement integrity even at >10 MΩ source impedances.

Portable Instrumentation

Switched-Capacitor Filter Banks

Use Scenario: Battery-powered handheld oscilloscopes and data loggers needing low-power signal conditioning and channel selection.

IC Role / Device Role / Timing Role: Low-quiescent-current analog switch enabling rail-to-rail input stage configuration with minimal standby power draw.

Use Value: 200 μA max I+ supply current at 25 °C allows >100-hour operation on AA batteries in sleep-mode instrument architectures.

Use Scenario: Programmable band-pass filter implementation using capacitor arrays switched at 100 kHz–1 MHz clock frequencies.

IC Role / Device Role / Timing Role: High-speed, low-charge-injection switch controlling capacitor connections in discrete-time filter topologies.

Use Value: 10 pC charge injection and 175 ns switching enable stable filter center frequency accuracy within ±0.5% over temperature.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX4674ESE+	Quad SPDT, 4.5 Ω on-resistance, 30 ns switching, 5 V only supply - lower R_DS(on) but narrower voltage range.	Better for low-voltage, high-speed digital signal routing; unsuitable for ±15 V instrumentation front-ends.	Select MAX4674ESE+ when speed and low on-resistance outweigh supply flexibility.
ADG1434BRUZ	Quad SPDT, 1.3 Ω on-resistance, ±15 V supply, 125 ns switching, 2.5 pC charge injection - higher precision but higher cost and larger TSSOP-24 package.	Ideal for medical-grade patient monitoring where sub-nA leakage and ultra-low glitch are mandatory.	Choose ADG1434BRUZ for ultra-high-precision applications demanding <3 pC charge injection and <2 nA leakage.

Compared with MAX4674ESE+ and ADG1434BRUZ, DG333ADJ delivers optimal balance of ±22 V signal range, 25 Ω on-resistance, and DIP packaging for legacy test equipment upgrades - offering broader supply compatibility than the MAX part and lower cost than the ADG part without sacrificing critical leakage or switching specs.

Availability

DG333ADJ is available at Aetrix Electronics and suitable for test equipment multiplexing, portable instrumentation, and switched-capacitor filter design requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for DG333ADJ 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 industrial and automotive markets.

The DG333ADJ belongs to Vishay's precision analog switch product line, engineered specifically for high-accuracy signal routing in test & measurement, medical instrumentation, and communications infrastructure where low leakage, matched on-resistance, and rail-to-rail operation are non-negotiable.

FAQ

What is the maximum analog signal voltage range supported by DG333ADJ?

DG333ADJ supports analog signals from V− to V+ across its full specified supply range: ±4 V to ±22 V in dual-supply mode, or 5 V to 40 V in single-supply mode. This rail-to-rail capability ensures no signal clipping occurs within these bounds, making DG333ADJ suitable for high-dynamic-range applications such as oscilloscope front-ends and programmable gain amplifier stages.

Is DG333ADJ pin-compatible with DG333AL?

No, DG333ADJ is not pin-compatible with DG333AL. While both share the same 20-pin DIP footprint, DG333AL uses Pin 15 as VL (logic supply), whereas DG333ADJ leaves Pin 15 unconnected (NC). Interchanging them without board modification risks incorrect logic-level biasing or open-circuit control lines, potentially causing undefined switch states in DG333AL-based designs.

What is the guaranteed on-resistance matching specification for DG333ADJ?

DG333ADJ guarantees on-resistance matching of ≤2 Ω between any two channels under bipolar supply conditions (V+ = 16.5 V, V− = −16.5 V, I_S = −10 mA, V_D = ±10 V). This tight matching ensures consistent gain/attenuation across parallel signal paths - critical for differential measurements, multi-channel data acquisition, and balanced audio routing where channel tracking directly impacts common-mode rejection.

Does DG333ADJ support break-before-make switching, and what is its minimum delay?

Yes, DG333ADJ implements break-before-make switching with a guaranteed minimum time delay (t_D) of 5 ns between opening one path and closing another. This prevents momentary short-circuits during state transitions - a vital feature in power-sensitive or fault-tolerant systems such as battery management units and relay-replacement circuits where cross-conduction could cause current surges or logic corruption.

Can DG333ADJ operate from a single 12 V supply, and what are the resulting performance trade-offs?

Yes, DG333ADJ supports single-supply operation from 12 V (V+ = 12 V, V− = 0 V). In this configuration, typical on-resistance increases to 35 Ω (vs. 25 Ω at ±15 V), turn-on time improves to 90 ns, and analog signal range becomes 0 V to 12 V. These shifts reflect inherent MOSFET channel behavior - designers must verify signal headroom and settling time requirements against these adjusted specs when migrating from dual-supply use cases.

DG333ADJ Specifications

Product attributes: Attribute value

Manufacturer:: Vishay Siliconix

Series:: -

Packaging:: Tube

Product Status:: Obsolete

Switch Circuit:: SPDT

Multiplexer/Demultiplexer Circuit:: 2:1

Number of Circuits:: 4

On-State Resistance (Max):: 45Ohm

Channel-to-Channel Matching (ΔRon):: 2Ohm (Max)

Voltage - Supply, Single (V+):: 5V ~ 40V

Voltage - Supply, Dual (V±):: ±4V ~ 22V

Switch Time (Ton, Toff) (Max):: 175ns, 145ns

-3db Bandwidth:: -

Charge Injection:: 10pC

Channel Capacitance (CS(off), CD(off)):: 8pF

Current - Leakage (IS(off)) (Max):: 250pA

Crosstalk:: -80dB @ 1MHz

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 20-PDIP

DG333ADJ FAQ

1.How can I place an order for DG333ADJ through Aetrix?

Please submit a Request for Quotation (RFQ) for DG333ADJ 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 DG333ADJ reliable?

The price and inventory of DG333ADJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DG333ADJ is usually 5 days.

3.What payment methods are accepted for DG333ADJ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DG333ADJ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DG333ADJ?

DG333ADJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DG333ADJ 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 DG333ADJ?

For technical support, including DG333ADJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DG333ADJ requirements.

6.How does Aetrix verify that DG333ADJ is sourced from the original manufacturer or authorized distributors?

All DG333ADJ 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 DG333ADJ meets industry standards.

7.What is the process for return or replacement of DG333ADJ?

All DG333ADJ units undergo pre-shipment inspection (PSI). If there is an issue with DG333ADJ, 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 DG333ADJ part is unused and in its original packaging.

Return procedure for DG333ADJ:

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 …