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Diodes Incorporated PT7M7810RTE
- Part No.:
- PT7M7810RTE
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PT7M7810RTE.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,892
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Product details
Overview
PT7M7810RTE from Diodes Incorporated is a precision microprocessor supervisory circuit with 2.63V reset threshold, 200ms reset pulse width, and manual-reset input-designed to monitor VCC during power-up/down and brownout in embedded microprocessor systems. It asserts active-low RESET when VCC drops below 2.63V and holds it for ≥140ms after recovery, supporting reliable system initialization in industrial controllers and network edge devices.
For engineers reviewing the PT7M7810RTE datasheet, PT7M7810RTE pinout, PT7M7810RTE application, or PT7M7810RTE equivalent, key selection criteria include guaranteed RESET validity down to VCC = 1.0V, SOT23-3 package compatibility, absence of watchdog or WDI functionality, and precise ±2.5% threshold tolerance over –40°C to +85°C.
Technical Context
The PT7M7810RTE implements a fixed-threshold voltage monitor with hysteresis (typ. 50mV) and a monostable reset timer. Its internal circuitry guarantees RESET assertion at VCC ≥ 1.0V and releases RESET only after VCC exceeds 2.63V and remains stable for ≥200ms.
No watchdog timer or WDI input is integrated-confirmed by function comparison table and block diagram exclusions. The device uses a CMOS-compatible manual-reset input (MR) with no internal pull-up resistor (unlike PT7M7811/7812), requiring external pull-up for robust operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V (±2.5% over –40°C to +85°C); defines brownout detection point for 3.3V/2.8V supply rails |
| Reset Pulse Width | 200ms typ. (140–400ms); ensures sufficient hold time for µP core and peripheral initialization |
| Supply Voltage Range | 1.0V to 5.5V; enables operation during deep brownout and supports wide-input power domains |
| Quiescent Current | 10–30µA at 5V; minimizes standby power impact in battery-backed or energy-sensitive systems |
| MR Input Logic | Active-low CMOS; requires external pull-up; no internal resistor (per pin description and functional table) |
| RESET Output Type | Open-drain (per function comparison table and PT7M7810 row); allows wired-OR configuration and level translation |
| Operating Temperature | –40°C to +85°C; qualified for industrial-grade embedded applications without derating |
Pinout & Package
SOT23-3 package (3-pin, 1.3mm × 2.9mm × 1.1mm body, 0.95mm pitch), lead-free and RoHS-compliant per ordering info and mechanical drawings.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power Supply Input | Primary supply rail connection; RESET asserted when voltage falls below 2.63V |
| GND | Ground Reference | 0V reference for all internal comparators and output stage; must be low-impedance |
| RESET | Open-Drain Reset Output | Active-low signal; requires external pull-up to host VCC or logic rail; sinks current during reset |
Key Features
| Feature | Design Value |
|---|---|
| Precision 2.63V threshold | ±2.5% tolerance across full temperature range ensures consistent brownout response in industrial environments |
| Guaranteed RESET at 1.0V | Enables fail-safe reset assertion even during severe undervoltage events before µP loses state retention |
| 200ms monostable reset timer | Provides deterministic, jitter-free reset duration independent of supply ramp rate or noise |
| CMOS-compatible MR input | Supports direct interface to push-button switches or GPIOs without level-shifting or additional buffering |
| Open-drain RESET output | Permits shared reset bus across multiple ICs and flexible voltage domain interfacing (e.g., 3.3V µP with 5V peripheral rail) |
Applications
| Industrial PLC Controller | Network Edge Router |
|---|---|
Use Scenario: Power supply monitoring during AC/DC converter transients and backup battery switchover. IC Role / Device Role / Timing Role: Voltage supervisor asserting system-wide RESET to prevent firmware corruption during 10–100ms brownouts. Use Value: 2.63V threshold aligns with 3.3V I/O rail minimum; 200ms pulse ensures FPGA configuration and PHY lock completion before release. | Use Scenario: Monitoring PoE-powered switch ASIC supply under load surges and cable impedance variations. IC Role / Device Role / Timing Role: Standalone reset generator triggered by 3.3V rail sag below specification limit. Use Value: Open-drain output interfaces directly to ASIC's active-low nRESET, eliminating need for discrete MOSFET level shifter. |
| Smart Energy Meter | Medical Diagnostic Sensor Hub |
Use Scenario: Supervising supercapacitor-backed real-time clock and metrology IC during main power loss. IC Role / Device Role / Timing Role: Brownout detector holding µP in reset until backup rail stabilizes above 2.63V post-failover. Use Value: Valid operation down to 1.0V allows reset assertion even as supercap voltage decays from 3.0V to 1.2V. | Use Scenario: Ensuring deterministic boot sequence for ARM Cortex-M4-based sensor fusion module after Li-ion battery insertion. IC Role / Device Role / Timing Role: Primary reset source coordinating power sequencing between analog front-end, ADC, and MCU. Use Value: ±2.5% threshold tolerance prevents spurious resets caused by temperature-induced VCC drift in unheated enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD2T | 2.93V threshold, 140ms min reset pulse, SOT23-3, no MR input | Lacks manual reset; unsuitable where field-service reset is required | Select when only power-on reset is needed and higher threshold matches 3.3V rail margin |
| TPS3808G12DBVR | 1.2V threshold, adjustable delay, SOT23-6, includes WDI and enable input | Requires external capacitor for timing; adds complexity for simple reset-only use cases | Choose only if programmable delay or watchdog integration justifies extra pin count and BOM cost |
Compared with MAX809TRD2T and TPS3808G12DBVR, PT7M7810RTE uniquely combines 2.63V precision threshold, manual reset capability, open-drain output, and SOT23-3 footprint-making it optimal for space-constrained industrial designs needing deterministic brownout response and field-serviceability.
Availability
PT7M7810RTE is available at Aetrix Electronics and suitable for industrial PLC controllers, network edge routers, smart energy meters, and medical diagnostic sensor hubs requiring stable component supply and long-term lifecycle support.
Supply support for PT7M7810RTE 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions.
The PT7M78xx family targets microprocessor system reliability, delivering precision voltage supervision with minimal external components for industrial, networking, and embedded applications.
FAQ
What is the exact reset threshold voltage and its tolerance for PT7M7810RTE?
The PT7M7810RTE has a nominal reset threshold of 2.63V, with ±2.5% tolerance over the full operating temperature range (–40°C to +85°C). This value is confirmed in the DC Electrical Characteristics table and applies to both rising and falling VCC transitions, with 50mV typical hysteresis to prevent chatter near threshold.
Does PT7M7810RTE include a watchdog timer or WDI input?
No. PT7M7810RTE does not include a watchdog timer or WDI input. The function comparison table explicitly lists "–" for Watchdog Input in row 3 (PT7M7810), and the block diagram shows no watchdog circuitry. It provides only power-supply monitoring and manual reset functions.
What is the RESET output type and how should it be interfaced?
PT7M7810RTE features an open-drain RESET output. It must be pulled up externally to the target logic rail (e.g., 3.3V or 5V) via a resistor (typically 4.7kΩ–10kΩ). This allows shared reset buses and voltage-level flexibility, but prohibits direct connection to a µP's reset input without pull-up.
Is there an internal pull-up resistor on the MR pin?
No. Unlike PT7M7811/7812, PT7M7810RTE has no internal MR pull-up resistor. The pin description states "Leave unconnected or connected to VCC if not used", implying external pull-up is required for noise immunity and defined logic state. This is verified by omission from the rMR parameter table.
PT7M7810RTE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.63V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
PT7M7810RTE FAQ
1.How can I place an order for PT7M7810RTE through Aetrix?
Please submit a Request for Quotation (RFQ) for PT7M7810RTE 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 PT7M7810RTE reliable?
The price and inventory of PT7M7810RTE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PT7M7810RTE is usually 5 days.
3.What payment methods are accepted for PT7M7810RTE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PT7M7810RTE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PT7M7810RTE?
PT7M7810RTE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PT7M7810RTE 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 PT7M7810RTE?
For technical support, including PT7M7810RTE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PT7M7810RTE requirements.
6.How does Aetrix verify that PT7M7810RTE is sourced from the original manufacturer or authorized distributors?
All PT7M7810RTE 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 PT7M7810RTE meets industry standards.
7.What is the process for return or replacement of PT7M7810RTE?
All PT7M7810RTE units undergo pre-shipment inspection (PSI). If there is an issue with PT7M7810RTE, 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 PT7M7810RTE part is unused and in its original packaging.
Return procedure for PT7M7810RTE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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