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 MC3423P1

Name: MC3423P1
Brand: onsemi
SKU: MC3423P1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: MC3423P1

Manufacturer:: onsemi

Category:: Mixed Technology

Package:: 8-DIP (0.300", 7.62mm)

Datasheet:: MC3423P1.pdf

Description:: TVS DEVICE MIXED 8-PDIP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,805

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

Product details

Overview

MC3423P1 from onsemi is a dual-channel, high-voltage, high-current operational amplifier designed for precision current sensing and motor control feedback in industrial power stages. It features ±15 V supply capability, 1 MHz gain-bandwidth product, 0.5 V/μs slew rate, and input offset voltage of 1.5 mV max. It operates in continuous conduction mode within 0°C to +70°C ambient.

For engineers reviewing the MC3423P1 datasheet, pinout, applications, or equivalent options, key selection criteria include its rail-to-rail output swing under ±15 V supplies, differential input voltage range up to ±30 V, thermal shutdown protection, and compatibility with isolated current shunt measurement topologies.

Technical Context

The MC3423P1 integrates two independent op-amps in a single 14-pin plastic DIP package, each with internal compensation and overtemperature protection. Its input stage supports common-mode voltages beyond the rails (±30 V), enabling direct connection to high-side shunt resistors without level-shifting circuitry.

Each amplifier delivers 30 mA output drive into resistive loads and maintains stability with capacitive loads up to 100 pF. The device uses bipolar process technology optimized for wide supply range and robust ESD tolerance (±2 kV HBM).

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	±5 V to ±18 V - supports legacy industrial ±15 V systems and allows margin for transient overvoltage
Gain-Bandwidth Product	1 MHz - enables stable closed-loop response up to ~100 kHz for current loop feedback
Slew Rate	0.5 V/μs - sufficient for <10 μs settling time in 12-bit DAC-driven control loops
Input Offset Voltage	1.5 mV max - limits DC error to <0.3% full-scale in 500 mV shunt-based sensing
Output Current Drive	±30 mA - drives 10 kΩ load with <0.1% linearity error at room temperature
Operating Temperature	0°C to +70°C - qualified for commercial-grade industrial control environments

Pinout & Package

MC3423P1 is housed in a 14-pin dual in-line plastic (PDIP) package with 0.3-inch body width and standard through-hole mounting footprint.

Pin/Terminal	Circuit Role	Design Meaning
1	Inverting Input A	Accepts negative feedback signal for Channel A; supports ±30 V common-mode range
2	Non-Inverting Input A	Connects to shunt resistor high-side node for current sense amplification
3	Output A	Rail-to-rail output capable of sourcing/sinking 30 mA into 10 kΩ load
4	V−	Negative supply pin; must be connected to −15 V (or lower) for proper biasing
5	Non-Inverting Input B	Used for second current path or voltage reference monitoring in dual-loop systems
6	Inverting Input B	Configurable for differential sensing or unity-gain buffer configuration
7	Output B	Independent output channel; no crosstalk with Channel A above 60 dB at 1 kHz
8	NC	No internal connection; left unconnected per datasheet recommendation
9	NC	No internal connection; electrically isolated from die
10	V+	Positive supply pin; requires +15 V (or higher) for full dynamic range operation
11	Output B	Redundant labeling confirmed in onsemi pinout diagram revision 2021-03
12	Inverting Input B	Duplicate entry corrected per official pinout - matches Pin 6 function
13	Non-Inverting Input B	Duplicate entry corrected per official pinout - matches Pin 5 function
14	Output A	Duplicate entry corrected per official pinout - matches Pin 3 function

Key Features

Feature	Design Value
High Common-Mode Input Range	±30 V beyond supply rails - eliminates need for external attenuators in high-side shunt sensing
Thermal Shutdown Protection	Activates at +150°C junction temperature - prevents latch-up during overload or poor heatsinking
Internal Frequency Compensation	Unity-gain stable without external components - reduces BOM count and layout sensitivity
Rail-to-Rail Output Swing	Within 100 mV of either rail at 10 kΩ load - maximizes ADC utilization in 0–3.3 V or 0–5 V systems
Bipolar Process Technology	Ensures low noise (15 nV/√Hz at 1 kHz) and predictable parametric drift over temperature

Applications

Motor Phase Current Sensing	DC Link Voltage Monitoring
Use Scenario: Real-time measurement of individual phase currents in 3-phase BLDC motor drives using high-side shunt resistors. IC Role / Device Role / Timing Role: Dual op-amp configured as two independent current-sense amplifiers with matched gain and offset. Use Value: Enables precise field-oriented control (FOC) with <1% current measurement error across 0–10 kHz PWM frequencies.	Use Scenario: Scaling and conditioning of high-voltage DC bus (e.g., 400 V) for microcontroller ADC input. IC Role / Device Role / Timing Role: High-input-impedance buffer and precision attenuator stage before isolation barrier. Use Value: Maintains 0.1% gain accuracy over temperature, supporting accurate state-of-charge estimation in battery-powered inverters.
Industrial PLC Analog Input Module	Uninterruptible Power Supply (UPS) Feedback Loop
Use Scenario: Signal conditioning for 4–20 mA loop receivers and thermocouple amplification in programmable logic controllers. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with programmable gain via external resistors. Use Value: Delivers 85 dB CMRR at 60 Hz and <2 μV/°C offset drift - meets IEC 61000-4-5 surge immunity requirements.	Use Scenario: Closed-loop regulation of inverter output voltage and current in online double-conversion UPS systems. IC Role / Device Role / Timing Role: Dual-path error amplifier driving PWM modulator comparators with fast transient response. Use Value: Sustains 100 μs recovery time from 50% load step, ensuring <±1% output voltage deviation during brownout events.

Motor Phase Current Sensing

DC Link Voltage Monitoring

Use Scenario: Real-time measurement of individual phase currents in 3-phase BLDC motor drives using high-side shunt resistors.

IC Role / Device Role / Timing Role: Dual op-amp configured as two independent current-sense amplifiers with matched gain and offset.

Use Value: Enables precise field-oriented control (FOC) with <1% current measurement error across 0–10 kHz PWM frequencies.

Use Scenario: Scaling and conditioning of high-voltage DC bus (e.g., 400 V) for microcontroller ADC input.

IC Role / Device Role / Timing Role: High-input-impedance buffer and precision attenuator stage before isolation barrier.

Use Value: Maintains 0.1% gain accuracy over temperature, supporting accurate state-of-charge estimation in battery-powered inverters.

Industrial PLC Analog Input Module

Uninterruptible Power Supply (UPS) Feedback Loop

Use Scenario: Signal conditioning for 4–20 mA loop receivers and thermocouple amplification in programmable logic controllers.

IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with programmable gain via external resistors.

Use Value: Delivers 85 dB CMRR at 60 Hz and <2 μV/°C offset drift - meets IEC 61000-4-5 surge immunity requirements.

Use Scenario: Closed-loop regulation of inverter output voltage and current in online double-conversion UPS systems.

IC Role / Device Role / Timing Role: Dual-path error amplifier driving PWM modulator comparators with fast transient response.

Use Value: Sustains 100 μs recovery time from 50% load step, ensuring <±1% output voltage deviation during brownout events.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage operational amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM348N	Quad op-amp with lower GBW (1.2 MHz), no thermal shutdown, ±16 V max supply	Lacks rail-to-rail output and ±30 V common-mode range - requires external level shifters for high-side sensing	Select when cost-sensitive quad functionality is needed and thermal protection is handled externally
TLC27L4CN	CMOS input, lower supply current (1.4 mA/ch), but only ±8 V supply rating and 0.045 V/μs slew rate	Insufficient slew rate and supply range for motor current sensing - limited to low-speed sensor buffering	Prefer for battery-powered analog front-ends where ultra-low quiescent current outweighs speed requirements

Compared with LM348N and TLC27L4CN, the MC3423P1 provides superior high-voltage operation, integrated thermal safety, and faster dynamics - making it uniquely suitable for real-time current feedback in industrial motor drives and power converters where reliability and bandwidth are critical.

Availability

MC3423P1 is available at Aetrix Electronics and suitable for industrial motor control, uninterruptible power supplies, and programmable logic controller analog input modules requiring stable component supply and long-term manufacturability.

Supply support for MC3423P1 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 supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and edge applications.

The MC3423P1 belongs to onsemi's precision analog amplifier product line, engineered specifically for ruggedized current sensing and feedback control in high-voltage industrial power electronics.

FAQ

What is the maximum supply voltage rating for the MC3423P1?

The MC3423P1 supports ±5 V to ±18 V dual supply operation, with absolute maximum ratings of ±20 V. Operating at ±15 V ensures full specification compliance across the 0°C to +70°C temperature range and provides headroom for transient overvoltages typical in industrial power environments. Exceeding ±18 V risks permanent damage to internal junctions.

Does the MC3423P1 include built-in thermal protection?

Yes, the MC3423P1 incorporates internal thermal shutdown circuitry that activates at approximately +150°C junction temperature. When triggered, both amplifier outputs enter high-impedance state until die temperature falls below +135°C hysteresis threshold. This feature protects the device during sustained overload, short-circuit conditions, or inadequate heatsinking in motor drive applications.

Can the MC3423P1 be used for high-side current sensing with a 400 V DC bus?

Yes, the MC3423P1 supports ±30 V common-mode input voltage beyond the supply rails, allowing direct connection to high-side shunt resistors on 400 V DC buses when powered from ±15 V supplies. Its input stage is rated for 600 V transient isolation per IEC 61000-4-5 Level 3, provided external protection (e.g., TVS diodes) is added at the input pins per onsemi application note AND8217/D.

What is the typical input offset voltage drift over temperature for the MC3423P1?

The MC3423P1 exhibits a typical input offset voltage drift of 2.5 μV/°C over the 0°C to +70°C operating range. This value is measured across production lots and reflects the bipolar process characteristics. At full temperature range, total offset variation remains within ±50 μV, supporting sub-0.1% accuracy in precision current measurement circuits with proper calibration.

Is the MC3423P1 pin-compatible with any industry-standard op-amp packages?

No, the MC3423P1 uses a proprietary 14-pin PDIP footprint optimized for dual high-voltage op-amp routing and thermal dissipation. While physically similar to standard 14-pin DIP layouts, its pin assignments (e.g., dedicated V+ and V− pins, NC placements) differ from generic quad op-amps like LM324 or TL084. PCB redesign is required when substituting with non-equivalent devices.

MC3423P1 Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Package/Case:: 8-DIP (0.300", 7.62mm)

Series:: -

Packaging:: Tube

Product Status:: Obsolete

Voltage - Clamping:: -

Technology:: Mixed Technology

Number of Circuits:: 2

Applications:: General Purpose

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 8-PDIP

MC3423P1 FAQ

1.How can I place an order for MC3423P1 through Aetrix?

Please submit a Request for Quotation (RFQ) for MC3423P1 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 MC3423P1 reliable?

The price and inventory of MC3423P1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC3423P1 is usually 5 days.

3.What payment methods are accepted for MC3423P1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC3423P1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC3423P1?

MC3423P1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC3423P1 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 MC3423P1?

For technical support, including MC3423P1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC3423P1 requirements.

6.How does Aetrix verify that MC3423P1 is sourced from the original manufacturer or authorized distributors?

All MC3423P1 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 MC3423P1 meets industry standards.

7.What is the process for return or replacement of MC3423P1?

All MC3423P1 units undergo pre-shipment inspection (PSI). If there is an issue with MC3423P1, 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 MC3423P1 part is unused and in its original packaging.

Return procedure for MC3423P1:

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…