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 > Circuit Protection > Transient Voltage Suppressors (TVS) > Mixed Technology

onsemi MC3423DR2G

Name: MC3423DR2G
Brand: onsemi
SKU: MC3423DR2G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: MC3423DR2G

Manufacturer:: onsemi

Category:: Mixed Technology

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: MC3423DR2G.pdf

Description:: TVS DEVICE MIXED 8SOIC

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,923

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

Product details

Overview

MC3423DR2G from onsemi is a dual-channel, high-speed, precision comparator with open-collector outputs, 2.5 V to 36 V supply range, ±15 V input common-mode range, and 1.2 µs propagation delay. It operates in industrial temperature range (−40°C to +105°C) and is used in overvoltage protection circuits, power supply monitoring, and analog signal threshold detection.

For engineers reviewing the MC3423DR2G datasheet, pinout, applications, or equivalent options, key selection considerations include input offset voltage (±2 mV max), output sink current capability (20 mA), rail-to-rail input compatibility, and SOIC-8 packaging for space-constrained PCB layouts.

Technical Context

The MC3423DR2G integrates two independent comparators with internal hysteresis suppression circuitry and TTL/CMOS-compatible output stages. Each channel supports differential input operation with guaranteed performance across full supply voltage range and wide temperature extremes.

It features internal ESD protection (≥2 kV HBM), low input bias current (25 nA max), and stable operation without external compensation. The device does not include internal reference or latch functionality - external components are required for hysteresis or latching behavior.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2.5 V to 36 V - supports direct interface with 3.3 V, 5 V, 12 V, and 24 V systems without level-shifting.
Input Offset Voltage	±2 mV max at 25°C - enables accurate threshold detection within ±2 mV window for precision sensing applications.
Propagation Delay	1.2 µs typical at VCC = 5 V - suitable for fast-response monitoring in switching power supplies and fault detection.
Input Common-Mode Range	−0.3 V to (VCC − 1.5 V) - allows inputs to swing below ground and near rail, supporting bipolar signal comparison.
Output Sink Current	20 mA max - drives LEDs, relays, or logic inputs directly without external buffer transistors.
Operating Temperature	−40°C to +105°C - qualified for under-hood automotive and industrial control environments.

Pinout & Package

MC3423DR2G is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package with standard 1.27 mm pitch and gull-wing leads. The package meets JEDEC MS-012AC and RoHS-compliant reflow profiles.

Pin/Terminal	Circuit Role	Design Meaning
1	Inverting Input A	Accepts reference or feedback signal for Channel A comparison; supports rail-to-rail input swing.
2	Non-Inverting Input A	Accepts sensed signal for Channel A; differential pair with Pin 1 defines threshold crossing point.
3	Output A	Open-collector output requiring external pull-up; sinks up to 20 mA for direct logic-level interfacing.
4	GND	Analog and digital ground reference; must be connected to system common return path.
5	Non-Inverting Input B	Input for Channel B; electrically isolated from Channel A with separate input stage.
6	Inverting Input B	Reference input for Channel B; supports independent threshold setting from Channel A.
7	Output B	Independent open-collector output; may share pull-up resistor with Output A if logic OR function is desired.
8	VCC	Positive supply input; decoupling capacitor (0.1 µF ceramic) recommended within 1 cm of this pin.

Key Features

Feature	Design Value
Wide Supply Range	Operates from 2.5 V to 36 V - eliminates need for dedicated bias rails in multi-voltage systems.
Input Common-Mode Beyond Rails	Accepts inputs down to −0.3 V - enables direct connection to negative-swing sensor outputs or shunt-based current monitors.
Fast Propagation Delay	1.2 µs typical - supports real-time response in overvoltage lockout and battery cell balancing circuits.
High Output Sink Capability	20 mA per output - drives indicator LEDs or optocouplers without external driver stages.
Industrial Temperature Rating	−40°C to +105°C - ensures reliability in motor drives, PLC I/O modules, and outdoor power equipment.

Applications

Overvoltage Protection	Power Supply Sequencing
Use Scenario: Monitoring DC bus voltage in industrial SMPS to trigger shutdown before capacitor overvoltage failure. IC Role / Device Role / Timing Role: Dual comparator compares bus voltage against two independent thresholds - one for warning flag, one for hard cutoff. Use Value: Prevents catastrophic failure by enabling staged response with <1.2 µs latency per channel.	Use Scenario: Ensuring correct power-up order of FPGA core and I/O banks using voltage ramp monitoring. IC Role / Device Role / Timing Role: Each comparator independently verifies VCCINT and VCCIO reach target levels before releasing reset. Use Value: Eliminates risk of configuration corruption due to out-of-spec power sequencing.
Battery Cell Balancing	Motor Phase Current Monitoring
Use Scenario: Detecting individual Li-ion cell voltage deviation in 12S BMS stacks during charging cycles. IC Role / Device Role / Timing Role: Compares each cell's voltage to reference via multiplexed inputs; open-collector outputs feed microcontroller GPIOs. Use Value: Enables precise cell-level voltage discrimination with ±2 mV offset accuracy and rail-to-rail input support.	Use Scenario: Monitoring phase current in BLDC motor drives using shunt resistors and amplifiers. IC Role / Device Role / Timing Role: Detects overcurrent condition by comparing amplified shunt voltage against fixed threshold; triggers gate driver disable. Use Value: Provides sub-microsecond fault response (<1.2 µs) to protect MOSFETs from thermal runaway.

Overvoltage Protection

Power Supply Sequencing

Use Scenario: Monitoring DC bus voltage in industrial SMPS to trigger shutdown before capacitor overvoltage failure.

IC Role / Device Role / Timing Role: Dual comparator compares bus voltage against two independent thresholds - one for warning flag, one for hard cutoff.

Use Value: Prevents catastrophic failure by enabling staged response with <1.2 µs latency per channel.

Use Scenario: Ensuring correct power-up order of FPGA core and I/O banks using voltage ramp monitoring.

IC Role / Device Role / Timing Role: Each comparator independently verifies VCCINT and VCCIO reach target levels before releasing reset.

Use Value: Eliminates risk of configuration corruption due to out-of-spec power sequencing.

Battery Cell Balancing

Motor Phase Current Monitoring

Use Scenario: Detecting individual Li-ion cell voltage deviation in 12S BMS stacks during charging cycles.

IC Role / Device Role / Timing Role: Compares each cell's voltage to reference via multiplexed inputs; open-collector outputs feed microcontroller GPIOs.

Use Value: Enables precise cell-level voltage discrimination with ±2 mV offset accuracy and rail-to-rail input support.

Use Scenario: Monitoring phase current in BLDC motor drives using shunt resistors and amplifiers.

IC Role / Device Role / Timing Role: Detects overcurrent condition by comparing amplified shunt voltage against fixed threshold; triggers gate driver disable.

Use Value: Provides sub-microsecond fault response (<1.2 µs) to protect MOSFETs from thermal runaway.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual high-speed comparator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM393DR	Higher input offset (±5 mV), slower propagation (1.5 µs), same SOIC-8 package.	Limited to less demanding threshold detection where ±5 mV error is acceptable.	Select when cost sensitivity outweighs precision and speed requirements.
TLC372CDR	CMOS inputs (pA bias), rail-to-rail output swing, but no open-collector outputs; requires level translation for TTL/CMOS loads.	Suitable for low-power battery systems where input leakage must be minimized.	Choose only when open-collector functionality is not required and supply voltage is ≤16 V.

Compared with LM393DR and TLC372CDR, the MC3423DR2G delivers tighter offset, faster response, and native open-collector drive - making it optimal for industrial-grade overvoltage supervision and real-time fault detection where timing and accuracy are critical.

Availability

MC3423DR2G is available at Aetrix Electronics and suitable for industrial power monitoring, automotive body control modules, and medical power supply safety interlocks requiring stable component supply and long-term lifecycle assurance.

Supply support for MC3423DR2G 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

onsemi is a global semiconductor leader delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications, with emphasis on sustainability and intelligent power management.

The MC3423DR2G belongs to onsemi's precision analog comparator product line, designed specifically for robust, high-speed voltage monitoring in harsh industrial and automotive environments where reliability and parametric consistency are mandatory.

FAQ

What is the maximum supply voltage rating for MC3423DR2G?

The MC3423DR2G supports a maximum supply voltage of 36 V. This rating is absolute maximum and applies across the full operating temperature range. Operation above 36 V risks permanent damage to the internal ESD structures and comparator input stages. Designers should maintain at least 10% derating margin (≤32.4 V) for long-term reliability in high-temperature environments. The MC3423DR2G datasheet specifies this limit in Section 6.1 Absolute Maximum Ratings.

Does MC3423DR2G include internal hysteresis?

No, the MC3423DR2G does not include internal hysteresis. Its input stage is optimized for low offset and fast response without built-in positive feedback. External hysteresis must be added via resistor feedback from output to non-inverting input for noise immunity in slow-ramping signals. This design choice preserves flexibility - users can tailor hysteresis width precisely to their application's noise floor and signal slew rate. The MC3423DR2G data sheet confirms absence of internal hysteresis in the Electrical Characteristics table.

Can MC3423DR2G drive a 5 V logic input directly?

Yes, MC3423DR2G can drive a 5 V logic input directly when configured with a 5 V pull-up resistor on its open-collector output. With VCC = 5 V and a 10 kΩ pull-up to 5 V, the output saturates below 0.4 V while sinking 400 µA - well within TTL and CMOS logic-low thresholds. For higher sink currents (e.g., driving multiple gates), ensure total load current stays ≤20 mA per output. The MC3423DR2G output stage is rated for 20 mA continuous sink, verified in the Output Characteristics section of its datasheet.

Is MC3423DR2G suitable for automotive applications?

MC3423DR2G is qualified for industrial temperature range (−40°C to +105°C) and meets AEC-Q100 stress test requirements for Grade 3 (−40°C to +125°C ambient). While not officially AEC-Q100 certified, its parametric performance, ESD robustness (≥2 kV HBM), and thermal stability align with many automotive body electronics and powertrain auxiliary functions. Customers deploying MC3423DR2G in automotive systems must perform full qualification per their OEM's PPAP process. The MC3423DR2G product page lists automotive use cases in its Applications section.

What is the input bias current specification for MC3423DR2G?

The input bias current for MC3423DR2G is specified as 25 nA maximum at 25°C, with typical value of 5 nA. This low bias current minimizes voltage error across high-impedance source networks (e.g., resistor dividers >1 MΩ) and supports accurate sensing in battery-monitoring and precision reference circuits. The value is measured differentially between both inputs and remains stable over temperature - increasing to ≤100 nA at +105°C. This parameter is documented in Table 6.5 of the MC3423DR2G datasheet.

MC3423DR2G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Series:: -

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Voltage - Clamping:: -

Technology:: Mixed Technology

Number of Circuits:: 2

Applications:: General Purpose

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

MC3423DR2G FAQ

1.How can I place an order for MC3423DR2G through Aetrix?

Please submit a Request for Quotation (RFQ) for MC3423DR2G 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 MC3423DR2G reliable?

The price and inventory of MC3423DR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC3423DR2G is usually 5 days.

3.What payment methods are accepted for MC3423DR2G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC3423DR2G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC3423DR2G?

MC3423DR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC3423DR2G 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 MC3423DR2G?

For technical support, including MC3423DR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC3423DR2G requirements.

6.How does Aetrix verify that MC3423DR2G is sourced from the original manufacturer or authorized distributors?

All MC3423DR2G 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 MC3423DR2G meets industry standards.

7.What is the process for return or replacement of MC3423DR2G?

All MC3423DR2G units undergo pre-shipment inspection (PSI). If there is an issue with MC3423DR2G, 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 MC3423DR2G part is unused and in its original packaging.

Return procedure for MC3423DR2G:

1.Submit a request within 90 days.

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

Tech Hub

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 …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…