My Inquiry
My Account
onsemi MC33464N-30CTR
- Part No.:
- MC33464N-30CTR
- Manufacturer:
- onsemi
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MC33464N-30CTR.pdf
- Description:
- IC SUPERVISOR PWR SUP SUPPORT
- Quantity:
- Payment:
- Shipping:
Inventory:45,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MC33464N-30CTR from onsemi is a micropower undervoltage sensing circuit designed for battery-powered microprocessor systems, featuring a 3.0 V detection threshold, ±2.5% accuracy, 0.8 μA typical quiescent current at 1.5 V input, and complementary MOS reset output in SOT-23-5 package. It monitors logic supply rails in portable electronics to prevent erratic MCU operation during brownout.
For engineers reviewing the MC33464N-30CTR datasheet, pinout, applications, or equivalent options, key selection criteria include threshold tolerance, standby current below 1.0 V, hysteresis value (±0.15 V), output drive capability (1.0–2.0 mA source/sink), and SOT-23-5 thermal performance (RθJA = 667°C/W).
Technical Context
The MC33464N-30CTR integrates a precision bandgap voltage reference, comparator with built-in hysteresis, and complementary MOS output stage. Its threshold is trimmed to 3.0 V (2.925–3.075 V) with ±100 ppm/°C temperature coefficient, enabling stable reset assertion across −40°C to +85°C ambient.
It operates over 0.7–10 V input range and guarantees functional reset generation down to 0.7 V supply, with propagation delay under 100 μs. The complementary output drives both high-side and low-side reset paths without external pull-up, supporting direct interface to microprocessor reset inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Threshold Voltage | 3.0 V nominal (2.925–3.075 V), ±2.5% accuracy ensures reliable reset activation at defined system supply level |
| Quiescent Current | 0.8 μA typical at Vin = 1.5 V - enables multi-year battery life in always-on monitoring applications |
| Hysteresis | 0.15 V typical (0.09–0.21 V) prevents oscillation near threshold during slow supply ramp-up/down |
| Input Voltage Range | 0.7 V to 10 V - supports operation during deep brownout and compatibility with 1.2–5.0 V logic supplies |
| Output Drive | Complementary MOS: VOH ≥ Vin − 2.1 V (at 1.0 mA), VOL ≤ 0.05 V (at 1.0 mA) - eliminates need for external pull-up resistor |
| Propagation Delay | <100 μs - ensures timely reset assertion without compromising system startup timing budgets |
| Operating Temperature | −40°C to +85°C ambient - qualified for industrial and automotive cabin environments |
Pinout & Package
MC33464N-30CTR is housed in a 5-pin SOT-23 surface-mount plastic package (Case 1212), with 0.95 mm pitch, 1.5 mm × 2.9 mm footprint, and exposed pad not connected internally. Thermal resistance is 667°C/W (Junction-to-Ambient).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Input) | Voltage sense input | Connects directly to monitored power rail; internal reference compares this node to 3.0 V threshold |
| 2 (Vref) | Internal reference output | Provides buffered 1.25 V reference for external use; not required for basic reset function |
| 3 (GND) | Analog ground | Reference return for internal comparator and reference; must be low-impedance connection to system ground |
| 4 (Reset) | Complementary reset output | Active-low open-drain compatible signal; pulls low when Vin < 3.0 V, high when Vin > 3.0 V + hysteresis |
| 5 (NC) | No connect | Internally unconnected; must remain floating or tied to GND per layout guidelines - no electrical function |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 0.8 μA typical IIN at 1.5 V enables >10-year coin-cell battery life in wireless sensors |
| Guaranteed sub-1.0 V operation | Functional reset generation down to 0.7 V input ensures fail-safe behavior during severe brownout |
| Trimmed threshold accuracy | ±2.5% over temperature avoids unnecessary resets in margin-constrained 3.3 V systems |
| Complementary MOS output | Eliminates external pull-up resistor and associated leakage path, reducing BOM count and board space |
| Built-in hysteresis | 0.15 V typical prevents chatter on noisy or slowly ramping supplies without external RC network |
Applications
| Portable Medical Sensors | Smart Home Thermostats |
|---|---|
|
Use Scenario: Coin-cell powered temperature/humidity sensor transmitting data every 5 minutes via BLE. IC Role / Device Role / Timing Role: Undervoltage monitor asserting MCU reset before supply drops below 2.9 V, preventing corrupted memory writes or radio transmission errors. Use Value: 0.8 μA quiescent current extends CR2032 battery life beyond 3 years; complementary output reduces component count by eliminating pull-up resistor. |
Use Scenario: Mains-powered HVAC controller with supercapacitor backup maintaining real-time clock and settings during brief AC outages. IC Role / Device Role / Timing Role: Monitors 3.3 V backup rail to trigger controlled shutdown and NVRAM save before capacitor voltage falls below MCU operational minimum. Use Value: 3.0 V threshold aligns precisely with MCU reset specification; ±2.5% accuracy avoids premature shutdown during line ripple. |
| Industrial PLC I/O Modules | Automotive Body Control Units |
|
Use Scenario: DIN-rail mounted digital input module operating from 24 V DC supply with local 3.3 V LDO regulation. IC Role / Device Role / Timing Role: Supervises 3.3 V logic rail to ensure deterministic reset of ARM Cortex-M4 processor during input power transients or ESD events. Use Value: −40°C to +85°C rating matches industrial ambient requirements; <100 μs propagation delay meets fast-response safety diagnostics. |
Use Scenario: Door module monitoring 5 V supply derived from vehicle battery, requiring robust brownout detection amid load-dump and cold-crank conditions. IC Role / Device Role / Timing Role: Detects drop below 3.0 V on regulated 5 V rail to initiate graceful firmware recovery before MCU lockup. Use Value: 0.7–10 V input range accommodates cold-crank dips to 6 V and post-load-dump surges; hysteresis prevents reset toggling during transient noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar undervoltage monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCP302LSN30T1G | 3.0 V threshold, 0.5 μA IQ, open-drain output, SOT-23-3 package (3 pins, no Vref or NC) | Lacks Vref output and complementary drive; requires external pull-up; smaller footprint but less flexible interface | Select when minimal BOM count and ultra-low IQ outweigh need for Vref or active-high reset capability |
| TPS3808G30DBVR | 3.0 V threshold, 1.1 μA IQ, push-pull output, SOT-23-6 package, programmable delay | Includes adjustable reset timeout (0–10 s); higher quiescent current; no internal Vref output | Select when system requires timed reset hold-off after power recovery, and 0.3 μA higher IQ is acceptable |
Compared with NCP302LSN30T1G and TPS3808G30DBVR, the MC33464N-30CTR uniquely combines complementary output, buffered Vref, and sub-1.0 V operation in a 5-pin SOT-23 - enabling simpler reset circuitry and extended functionality without added components.
Availability
MC33464N-30CTR is available at Aetrix Electronics and suitable for portable medical sensors, smart home thermostats, industrial PLC I/O modules, and automotive body control units requiring stable component supply with guaranteed long-term manufacturability.
Supply support for MC33464N-30CTR 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 (formerly ON Semiconductor) is a global semiconductor manufacturer specializing in energy-efficient power management, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and IoT applications.
The MC33464 series belongs to onsemi's precision power monitoring product line, engineered specifically for ultra-low-power undervoltage detection in battery-critical systems where extended runtime and deterministic reset behavior are essential.
FAQ
What is the exact threshold voltage tolerance of the MC33464N-30CTR over temperature?
The MC33464N-30CTR has a nominal threshold of 3.0 V with a guaranteed tolerance of ±2.5% across −40°C to +85°C ambient temperature. Electrical characteristics specify min/max values of 2.925 V (lower) and 3.075 V (upper) at TA = 25°C, and the temperature coefficient is ±100 ppm/°C - meaning total drift remains within ±2.5% over full operating range.
Does the MC33464N-30CTR require an external pull-up resistor on its Reset pin?
No, the MC33464N-30CTR features a complementary MOS output that actively drives both high and low states. Unlike open-drain variants, it does not require an external pull-up resistor on Pin 4 (Reset). This simplifies PCB layout and eliminates a potential leakage path, making it ideal for ultra-low-power designs where every nanoamp counts.
Can the MC33464N-30CTR operate reliably below 1.0 V input supply?
Yes, the MC33464N-30CTR is explicitly specified to operate down to 0.7 V input voltage and guarantee functional reset assertion even when Vin falls below 1.0 V. This capability is confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables, enabling robust brownout protection in deeply discharged battery scenarios.
What is the purpose of Pin 2 (Vref) on the MC33464N-30CTR?
Pin 2 provides access to the internal 1.25 V bandgap reference voltage, which is buffered and stable over temperature and supply. While not required for basic reset functionality, it can be used externally for precision ADC reference, comparator biasing, or calibration - adding system-level flexibility without needing a separate reference IC.
How does the hysteresis of the MC33464N-30CTR prevent reset instability?
The MC33464N-30CTR incorporates built-in hysteresis of 0.09–0.21 V (typical 0.15 V), meaning the rising-edge threshold is ~3.15 V while the falling-edge threshold remains at 3.0 V. This gap prevents rapid on/off toggling when the input voltage lingers near the trip point due to noise or slow ramping - ensuring clean, glitch-free reset signaling critical for microprocessor reliability.
MC33464N-30CTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- -
- Number of Voltages Monitored:
- -
- Voltage - Threshold:
- -
- Output:
- -
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MC33464N-30CTR FAQ
1.How can I place an order for MC33464N-30CTR through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33464N-30CTR 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 MC33464N-30CTR reliable?
The price and inventory of MC33464N-30CTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33464N-30CTR is usually 5 days.
3.What payment methods are accepted for MC33464N-30CTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33464N-30CTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33464N-30CTR?
MC33464N-30CTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33464N-30CTR 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 MC33464N-30CTR?
For technical support, including MC33464N-30CTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33464N-30CTR requirements.
6.How does Aetrix verify that MC33464N-30CTR is sourced from the original manufacturer or authorized distributors?
All MC33464N-30CTR 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 MC33464N-30CTR meets industry standards.
7.What is the process for return or replacement of MC33464N-30CTR?
All MC33464N-30CTR units undergo pre-shipment inspection (PSI). If there is an issue with MC33464N-30CTR, 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 MC33464N-30CTR part is unused and in its original packaging.
Return procedure for MC33464N-30CTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC33464N-30CTR Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
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…
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, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
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.
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.
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…
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…
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…
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 …
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…
