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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Supervisors

Diodes Incorporated PT7M7810TTEX

Name: PT7M7810TTEX
Brand: Diodes Incorporated
SKU: PT7M7810TTEX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PT7M7810TTEX

Manufacturer:: Diodes Incorporated

Category:: Supervisors

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: PT7M7810TTEX.pdf

Description:: IC SUPERVISOR 1 CHANNEL SOT23-3

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Product details

Overview

PT7M7810TTEX from Diodes Incorporated is a precision microprocessor (μP) supervisor IC with 3.08V reset threshold, 200ms reset pulse width, and manual-reset input-designed for reliable power-up/power-down sequencing in embedded systems requiring stable voltage monitoring at V_CC ≥1.0V.

For engineers reviewing the PT7M7810TTEX datasheet, PT7M7810TTEX pinout, PT7M7810TTEX application, or PT7M7810TTEX equivalent, this device supports critical reset assertion during brownout, manual recovery, and low-voltage operation down to 1.0V-key for industrial controllers, network edge devices, and battery-backed storage subsystems.

Technical Context

The PT7M7810TTEX implements a fixed-threshold voltage monitor with ±2.5% accuracy over –40°C to +85°C and integrates a 200ms internal reset timeout timer. It asserts active-low RESET when V_CC falls below 3.08V and holds it for ≥200ms after V_CC recovers above threshold.

No watchdog or WDI functionality is included-confirmed by Function Comparison Table (Row 3) and block diagram-making it a dedicated reset supervisor without timing supervision. The MR input is CMOS-compatible with internal pull-up (10–40kΩ), enabling push-button reset without external components.

Key Specifications

Parameter	Value and Actual Design Meaning
Reset Threshold	3.08V ±2.5% (nominal); ensures reliable reset assertion during 3.3V supply brownout.
Reset Pulse Width	200ms typical; guarantees μP initialization time meets minimum reset hold requirements.
Supply Voltage Range	1.0V to 5.5V; enables valid reset output even during deep brownout or ultra-low-power wake-up.
Quiescent Current	10–30µA at 5V; minimizes standby power impact in always-on embedded systems.
MR Input Logic	CMOS-compatible active-low; internal 10–40kΩ pull-up eliminates need for external resistor.
RESET Output Type	Open-drain; allows wired-OR configuration and level-shifting across mixed-voltage domains.
Operating Temperature	–40°C to +85°C; qualified for industrial-grade environmental robustness.

Pinout & Package

PT7M7810TTEX is housed in a 3-pin SOT23 package (JEDEC TO-236AB), optimized for space-constrained PCB layouts and automated assembly.

Pin/Terminal	Circuit Role	Design Meaning
VCC	Power supply input	Monitored rail; RESET asserted when VCC drops below 3.08V; functional down to 1.0V.
GND	Ground reference	Common return path for all internal circuitry and reset timing logic.
MR	Manual-reset input	Active-low CMOS input; internal pull-up enables direct push-button connection to GND.
RESET	Open-drain reset output	Asserts low during power-up/brownout; requires external pull-up for system-level reset signaling.

Key Features

Feature	Design Value
Precision 3.08V threshold	±2.5% tolerance over full temperature range ensures consistent reset point for 3.3V systems.
200ms guaranteed reset pulse	Meets JEDEC JESD8-12B minimum reset duration for ARM Cortex-M and RISC-V microcontrollers.
1.0V VCC operation	Valid RESET assertion down to 1.0V enables fail-safe behavior during deep undervoltage conditions.
Internal MR pull-up	10–40kΩ resistor eliminates BOM count and layout area for manual reset circuitry.
Open-drain RESET output	Supports multi-source reset arbitration and flexible voltage-level interfacing (e.g., 1.8V/3.3V I/O domains).

Applications

Industrial PLC Controller

Network Edge Router

Use Scenario: Power sequencing during AC mains interruption or backup battery switchover.

IC Role / Device Role / Timing Role: Supervisor asserting system-wide reset when 3.3V rail dips below 3.08V during transient dropout.

Use Value: Prevents firmware corruption by holding CPU in reset until stable 3.3V is restored for ≥200ms.

Use Scenario: Cold boot and brownout recovery in fanless, thermally constrained router chassis.

IC Role / Device Role / Timing Role: Monitors primary 3.3V supply and triggers hardware reset on undervoltage, independent of software state.

Use Value: Eliminates watchdog dependency; ensures deterministic restart without firmware intervention.

RAID Storage Controller

Smart Meter MCU Subsystem

Use Scenario: Power-fail detection during write-cache flush before main power loss.

IC Role / Device Role / Timing Role: Generates clean, timed reset pulse to halt DMA and lock flash writes when 3.3V sags.

Use Value: Guarantees data integrity by synchronizing hardware reset with last valid supply margin.

Use Scenario: Battery-backed real-time clock and metrology core operating from 3.3V LDO.

IC Role / Device Role / Timing Role: Supervises 3.3V rail sourced from coin-cell backup; asserts reset if voltage decays below 3.08V.

Use Value: Maintains secure metering state by preventing partial register updates during battery exhaustion.

Equivalent & Alternatives

The following parts are listed as comparable options for similar μP reset supervisor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
APX809S-31SA-7	3.08V threshold, 240ms reset pulse, push-pull RESET output, no MR input.	Lacks manual reset; suited for systems where only power-supply monitoring is required.	Select when board space permits SOT23-3 and push-pull drive simplifies reset net routing.
TPS3808G33DBVR	3.3V threshold (±0.5%), 200ms pulse, adjustable delay option, MR input, push-pull output.	Higher accuracy and integrated delay capacitor option; requires external MR pull-up.	Choose for tighter threshold tolerance and compatibility with TI-based power management ecosystems.

Compared with APX809S-31SA-7 and TPS3808G33DBVR, PT7M7810TTEX offers open-drain flexibility and internal MR pull-up-reducing component count-while trading off threshold accuracy and MR absence in the former and higher cost in the latter.

Availability

PT7M7810TTEX is available at Aetrix Electronics and suitable for industrial PLC controllers, network edge routers, RAID storage controllers, and smart meter MCU subsystems requiring stable component supply with long-term manufacturability assurance.

Supply support for PT7M7810TTEX 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 semiconductor company specializing in discrete, analog, and mixed-signal ICs for power management, signal integrity, and protection applications.

The PT7M78xx family targets μP system reliability-specifically reducing component count and improving voltage-monitoring accuracy in embedded, networking, and storage applications where deterministic reset behavior is critical.

FAQ

What is the exact reset threshold voltage and tolerance for PT7M7810TTEX?

The PT7M7810TTEX has a nominal reset threshold of 3.08V, 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 under VRST specification and applies to both rising and falling VCC transitions.

Does PT7M7810TTEX include a watchdog timer function?

No. PT7M7810TTEX does not include a watchdog timer. Per the Function Comparison Table (Row 3) and block diagram, it lacks WDI input and watchdog timing circuitry-making it a dedicated voltage-monitoring reset supervisor without supervision capability.

What is the RESET output configuration and how should it be used?

PT7M7810TTEX features an open-drain RESET output. It must be pulled up externally to the target logic voltage (e.g., 3.3V or 1.8V) via a resistor (typically 4.7kΩ–10kΩ). This allows shared reset bus implementation and voltage-level translation across mixed-voltage systems.

Is PT7M7810TTEX compatible with 1.8V or 2.5V microcontrollers?

Yes. While its reset threshold is fixed at 3.08V, the device operates down to VCC = 1.0V and its open-drain RESET output can interface with any logic domain using an appropriate pull-up voltage. Its MR input is CMOS-compatible and functions correctly with 1.8V/2.5V logic levels when driven externally.

PT7M7810TTEX Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Programmable:: Not Verified

Type:: Simple Reset/Power-On Reset

Number of Voltages Monitored:: 1

Voltage - Threshold:: 3.08V

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

PT7M7810TTEX FAQ

1.How can I place an order for PT7M7810TTEX through Aetrix?

Please submit a Request for Quotation (RFQ) for PT7M7810TTEX 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 PT7M7810TTEX reliable?

The price and inventory of PT7M7810TTEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PT7M7810TTEX is usually 5 days.

3.What payment methods are accepted for PT7M7810TTEX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PT7M7810TTEX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PT7M7810TTEX?

PT7M7810TTEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PT7M7810TTEX 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 PT7M7810TTEX?

For technical support, including PT7M7810TTEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PT7M7810TTEX requirements.

6.How does Aetrix verify that PT7M7810TTEX is sourced from the original manufacturer or authorized distributors?

All PT7M7810TTEX 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 PT7M7810TTEX meets industry standards.

7.What is the process for return or replacement of PT7M7810TTEX?

All PT7M7810TTEX units undergo pre-shipment inspection (PSI). If there is an issue with PT7M7810TTEX, 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 PT7M7810TTEX part is unused and in its original packaging.

Return procedure for PT7M7810TTEX:

1.Submit a request within 90 days.

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

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