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onsemi MC34164P-5G
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- Part No.:
- MC34164P-5G
- Manufacturer:
- onsemi
- Category:
- Supervisors
- Package:
- TO-226-3, TO-92-3 Long Body
- Datasheet:
-
MC34164P-5G.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,179
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Product details
Overview
MC34164P-5G from onsemi is a micropower undervoltage sensing circuit designed as a reset controller for 5.0 V microprocessor power supplies in portable and battery-powered systems. It features a precise 4.15–4.45 V threshold with hysteresis, open-collector reset output sinking ≥7.0 mA, guaranteed operation down to 1.0 V input, and standby current as low as 12 µA. It is used in appliance, automotive, consumer, and industrial equipment for reliable power-on reset generation.
For engineers reviewing the MC34164P-5G datasheet, pinout, applications, or equivalent options, key selection criteria include its 5.0 V detection threshold, TO-92 package compatibility, reset sink capability under low-voltage conditions, and temperature-stable comparator performance across 0 °C to +70 °C.
Technical Context
The MC34164P-5G integrates a bandgap reference, precision comparator with built-in hysteresis (≥0.02 V), and an open-collector NPN reset output stage. Its comparator thresholds are specified over temperature (4.15 V min to 4.45 V max at TA = 0 °C to +70 °C), ensuring stable reset assertion/deassertion during supply ramp-up and brownout events.
It includes an internal clamp diode between Reset and Input pins for controlled discharge of external delay capacitors, enabling programmable reset timeout. The device operates with input voltages from 1.0 V to 10 V and draws ≤20 µA quiescent current at 5.0 V, supporting ultra-low-power system design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.15–4.45 V (precise 5.0 V supply monitoring with guaranteed hysteresis ≥0.02 V) |
| Reset Sink Current | ≥7.0 mA (drives standard logic-level reset inputs without external pull-up) |
| Operating Voltage Range | 1.0–10 V (enables reset assertion even during deep brownout or battery depletion) |
| Quiescent Current | 12–20 µA at 5.0 V (minimizes battery drain in always-on monitoring applications) |
| Temperature Range | 0 °C to +70 °C (commercial-grade operation suitable for appliance and consumer electronics) |
| Output Type | Open-collector NPN (allows wired-OR reset bus configuration and flexible voltage translation) |
| Input Hysteresis | 0.02–0.09 V (prevents oscillatory reset behavior during slow or noisy supply transitions) |
Pinout & Package
MC34164P-5G is housed in a 3-pin TO-92 (TO-226AA) plastic package with bent leads, rated for 1 W dissipation and RoHS-compliant Pb-free construction.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Reset (output) | Open-collector NPN output; sinks current when input falls below threshold |
| 2 | Input (VIN) | Main supply voltage sense node; connects directly to monitored 5.0 V rail |
| 3 | GND | Ground reference for internal bandgap and comparator; must be low-impedance |
Key Features
| Feature | Design Value |
|---|---|
| 5.0 V Precision Threshold | Guaranteed 4.15–4.45 V window over temperature ensures accurate reset timing for 5 V MPU rails |
| Internal Clamp Diode | Enables safe, controlled discharge of external RC delay networks without external components |
| Low-Voltage Operation | Functional down to 1.0 V input allows reset assertion during severe brownout or battery sag |
| Temperature-Compensated Reference | Bandgap-based reference maintains threshold stability across 0 °C to +70 °C ambient range |
| High Sink Capability | ≥7.0 mA output drive supports direct interface to legacy microcontroller reset pins with no buffer needed |
Applications
| Appliance Power Monitoring | Automotive Body Control Module |
|---|---|
Use Scenario: Monitoring 5.0 V logic supply in washing machine control board during AC line dropout. IC Role / Device Role / Timing Role: Undervoltage detector generating active-low reset pulse to hold MCU in reset until stable 5.0 V is restored. Use Value: Prevents erratic MCU operation or EEPROM corruption during brief mains interruptions. |
Use Scenario: Supervising 5.0 V supply to door lock actuator MCU in 12 V vehicle electrical system. IC Role / Device Role / Timing Role: Reset controller asserting reset during cold-crank voltage dip below 5.0 V threshold. Use Value: Ensures deterministic MCU boot after engine start, avoiding spurious actuation commands. |
| Consumer IoT Sensor Hub | Industrial Programmable Logic Controller |
Use Scenario: Battery-backed 5.0 V rail supervision in smart thermostat with Li-ion backup. IC Role / Device Role / Timing Role: Low-quiescent-current reset supervisor maintaining reset state until battery voltage recovers above 4.3 V. Use Value: Extends usable battery life while guaranteeing clean restart upon recharge. |
Use Scenario: 5.0 V I/O module power rail monitoring in DIN-rail mounted PLC with wide ambient range. IC Role / Device Role / Timing Role: Micropower undervoltage sensor triggering system-wide reset on 5 V rail collapse due to field wiring fault. Use Value: Enables fail-safe shutdown before corrupted logic states propagate to output drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar undervoltage sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC33164P-5G | Same electrical specs and pinout; differs only in manufacturer part numbering prefix (MC33 vs MC34 series) | Identical functional role; both qualified for commercial temperature range (0 °C to +70 °C) | Select MC33164P-5G if sourcing continuity is prioritized within the MC33164 family footprint |
| NCP302LSN50T1G | Fixed 5.0 V threshold, 1.6 µA typical quiescent current, SOT-23-3 package, no internal clamp diode | Lacks integrated clamp diode; requires external diode for RC delay discharge; lower IQ benefits ultra-long-life battery apps | Choose NCP302LSN50T1G where minimal standby current outweighs need for internal clamp functionality |
Compared with MC34164P-5G, MC33164P-5G offers identical performance and drop-in compatibility, while NCP302LSN50T1G trades clamp diode integration for significantly lower quiescent current-making it preferable for multi-year battery deployments where external component count is acceptable.
Availability
MC34164P-5G is available at Aetrix Electronics and suitable for appliance, automotive, and industrial applications requiring stable component supply, long-lifecycle support, and commercial-grade reset supervision.
Supply support for MC34164P-5G 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 supplier specializing in energy-efficient power management, analog, and sensing solutions for automotive, industrial, and consumer markets.
The MC34164 series belongs to onsemi's micropower supervisor product line, engineered specifically for low-cost, high-reliability reset control in battery-constrained microprocessor systems.
FAQ
What is the exact reset threshold voltage range for MC34164P-5G?
The MC34164P-5G has a guaranteed reset threshold range of 4.15 V (minimum) to 4.45 V (maximum) at TA = 0 °C to +70 °C, with typical hysteresis of 0.06 V. This ensures robust 5.0 V supply monitoring with margin against noise and drift. The threshold is defined by the rising input voltage level that releases reset (VIH) and falling level that asserts reset (VIL), both tightly specified in the datasheet.
Does MC34164P-5G require an external resistor to set its threshold?
No, MC34164P-5G does not require an external resistor to set its threshold-it is a fixed 5.0 V detector. Unlike adjustable supervisors, its internal bandgap and comparator network are trimmed at wafer test to deliver the 4.15–4.45 V window. External resistors are only needed if adding hysteresis enhancement (via RH) or RC delay (via CDLY), per Figures 15 and 14 in the datasheet.
Can MC34164P-5G operate with input voltages below 5.0 V?
Yes, MC34164P-5G is fully functional down to 1.0 V input, enabling reliable reset assertion during brownout conditions far below nominal 5.0 V. Its internal circuitry remains active and accurate across 1.0–10 V, making it suitable for battery-powered systems where supply voltage decays gradually before cutoff.
What is the purpose of the internal clamp diode in MC34164P-5G?
The internal clamp diode connects the Reset pin to the Input pin and enables safe, rapid discharge of external RC timing capacitors used for reset delay. This eliminates the need for an external diode in delay circuits (e.g., Figure 14), simplifying design and improving reliability during repeated power cycles or transient events.
Is MC34164P-5G pin-compatible with other packages in the MC34164 family?
No-MC34164P-5G uses a 3-pin TO-92 package with Pin 1 = Reset, Pin 2 = Input, Pin 3 = GND. Other variants like SOIC-8 (MC34164D-5G) and Micro8 (MC34164DM-5R2G) have different pin counts and layouts. Only TO-92 variants (e.g., MC33164P-5G) share identical pinout and mechanical footprint with MC34164P-5G.
MC34164P-5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 Long Body
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.33V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92 (TO-226)
MC34164P-5G FAQ
1.How can I place an order for MC34164P-5G through Aetrix?
Please submit a Request for Quotation (RFQ) for MC34164P-5G 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 MC34164P-5G reliable?
The price and inventory of MC34164P-5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC34164P-5G is usually 5 days.
3.What payment methods are accepted for MC34164P-5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC34164P-5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC34164P-5G?
MC34164P-5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC34164P-5G 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 MC34164P-5G?
For technical support, including MC34164P-5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC34164P-5G requirements.
6.How does Aetrix verify that MC34164P-5G is sourced from the original manufacturer or authorized distributors?
All MC34164P-5G 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 MC34164P-5G meets industry standards.
7.What is the process for return or replacement of MC34164P-5G?
All MC34164P-5G units undergo pre-shipment inspection (PSI). If there is an issue with MC34164P-5G, 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 MC34164P-5G part is unused and in its original packaging.
Return procedure for MC34164P-5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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