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Diodes Incorporated PT7M7810LTEX
- Part No.:
- PT7M7810LTEX
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PT7M7810LTEX.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,287
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Product details
Overview
PT7M7810LTEX from Diodes Incorporated is a precision microprocessor supervisory circuit with 4.63V reset threshold (L suffix), 200ms reset pulse width, debounced manual-reset input, and guaranteed RESET validity down to VCC = 1.0V. It monitors power supply integrity during power-up, brownout, and power-down in embedded μP systems and supports watchdog-free operation.
For engineers reviewing the PT7M7810LTEX datasheet, PT7M7810LTEX pinout, PT7M7810LTEX application, or PT7M7810LTEX equivalent, this device serves as a dedicated voltage monitor and reset generator for industrial control, server management, and security system power sequencing where deterministic reset timing and low-voltage operation are critical.
Technical Context
The PT7M7810LTEX implements a fixed-threshold voltage detector with ±2.5% accuracy over −40°C to +85°C, generating an active-low push-pull RESET signal. Its internal reset timer ensures a minimum 140ms (typ. 200ms) assertion after VCC crosses VRST or MR release.
No watchdog or WDI functionality is integrated - per Function Comparison Table, PT7M7810 lacks both WDI and watchdog input, distinguishing it from PT7M7811/7812/7823–7825 variants. Manual reset is supported via CMOS-compatible MR input with internal pull-up (10–40kΩ).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V ±2.5% - precise detection of 5V rail undervoltage before brownout affects μP execution |
| Reset Pulse Width | 200ms typ. - ensures full μP initialization and memory stabilization before release |
| Supply Voltage Range | 1.0V to 5.5V - guarantees RESET assertion even during deep brownout or partial power loss |
| Quiescent Current | 10–30µA at 5V - enables long-term battery-backed monitoring without significant drain |
| MR Input Type | CMOS-compatible with internal 10–40kΩ pull-up - eliminates external resistor for push-button reset |
| RESET Output Type | Push-pull - drives high/low actively without external pull-up, simplifying interface to μP reset pin |
| Operating Temperature | −40°C to +85°C - validated for industrial and commercial embedded environments |
Pinout & Package
PT7M7810LTEX is packaged in a 3-pin SOT23 (T code) surface-mount package with gull-wing leads, optimized for space-constrained PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power Supply Input | Primary supply rail connection; RESET asserts when VCC falls below 4.63V |
| GND | Ground Reference | Common return path for all internal circuits and reset timing reference |
| MR | Manual Reset Input | Active-low CMOS input; pulling low forces RESET assertion for ≥200ms after release |
| RESET | Reset Output | Active-low push-pull output; drives μP reset pin directly without external components |
Key Features
| Feature | Design Value |
|---|---|
| Precision 4.63V threshold | Enables reliable supervision of standard 5V logic rails with minimal margin error |
| 200ms reset timeout | Meets μP reset hold-time requirements for stable boot across diverse silicon families |
| VCC = 1.0V RESET guarantee | Ensures reset remains asserted through final stages of power collapse, preventing runaway code |
| Internal MR pull-up | Reduces BOM count by eliminating external resistor for momentary switch implementation |
| Lead-free & RoHS-compliant | Fulfills environmental compliance for global industrial and networking equipment shipments |
Applications
| Industrial PLC Control | Network Switch Management |
|---|---|
Use Scenario: Power sequencing and fault recovery in programmable logic controllers operating in factory-floor environments with fluctuating 5V supplies. IC Role / Device Role / Timing Role: Voltage supervisor asserting RESET during brownout to halt I/O execution and prevent corrupted register writes. Use Value: Prevents spurious relay actuation or sensor misreads by enforcing deterministic reset behavior at precisely 4.63V. | Use Scenario: Monitoring primary 5V rail in managed Ethernet switches with hot-swap capability and firmware update resilience. IC Role / Device Role / Timing Role: Dedicated reset generator ensuring clean reboot after power interruption or thermal shutdown. Use Value: Guarantees 200ms reset hold time required by switch ASICs to complete internal state save before restart. |
| Security System Panel | Embedded Storage Controller |
Use Scenario: Supervising backup battery and main supply in access control panels with tamper-detection logic and nonvolatile event logging. IC Role / Device Role / Timing Role: Low-voltage reset enabler maintaining secure state during battery switchover or AC dropout. Use Value: Valid RESET output down to VCC = 1.0V prevents data corruption during last-moment battery depletion. | Use Scenario: Power integrity monitoring in SATA/NVMe SSD controller boards where unexpected reset causes NAND write failure. IC Role / Device Role / Timing Role: Precision 4.63V threshold detector triggering controlled shutdown before 5V rail collapse reaches critical levels. Use Value: Matches typical SSD controller reset specification while minimizing false triggers from ripple noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| APX809S-46SA-7 | Same 4.6V threshold, 200ms reset, SOT23-3, but includes watchdog disable option and tighter ±1.5% threshold tolerance | Supports watchdog-enabled designs; requires no layout change for pin-compatible replacement | Select when higher threshold accuracy or future watchdog integration is planned |
| TPS3808G18DBVR | 1.8V threshold variant; not functionally equivalent - differs in reset voltage, no MR input, and different timing architecture | Designed for low-voltage SoC supervision, not 5V rail monitoring | Not suitable as direct replacement; only consider if redesigning for sub-2V supply domains |
Compared with APX809S-46SA-7, PT7M7810LTEX offers lower cost and simpler qualification path for watchdog-free 5V supervision, while TPS3808G18DBVR serves fundamentally different voltage domains and lacks manual reset - making it incompatible for this application context.
Availability
PT7M7810LTEX is available at Aetrix Electronics and suitable for industrial PLC control, network switch management, and security system panel designs requiring stable component supply and long-lifecycle support.
Supply support for PT7M7810LTEX 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 by integrating precision voltage monitoring, reset timing, and manual reset into compact SOT packages - specifically designed for cost-sensitive, space-constrained embedded power-supply supervision.
FAQ
Does PT7M7810LTEX include a watchdog timer?
No. According to the Function Comparison Table and Block Diagram, PT7M7810 has no WDI pin and no watchdog functionality. It provides only voltage monitoring, manual reset, and fixed 200ms reset timeout - unlike PT7M7811/7812/7823–7825 variants which integrate watchdog inputs.
What is the minimum VCC required for valid RESET assertion?
PT7M7810LTEX guarantees RESET output validity down to VCC = 1.0V, as confirmed in the Functional Description and DC Electrical Characteristics table. At this level, RESET remains a logic-low signal ≤0.4V, ensuring μP reset is maintained until complete power collapse.
Can PT7M7810LTEX drive a reset pin directly without external components?
Yes. Its push-pull RESET output drives both high and low actively, eliminating the need for an external pull-up resistor. This simplifies interface to standard μP reset inputs and reduces PCB footprint versus open-drain alternatives like PT7M7803.
Is PT7M7810LTEX qualified for automotive use?
No. The datasheet states automotive qualification (AEC-Q100/101/200, PPAP, IATF 16949) requires direct contact with Diodes representatives. PT7M7810LTEX is specified for industrial/commercial temperature range (−40°C to +85°C) and carries no automotive-grade markings or test reports in the provided documentation.
PT7M7810LTEX 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:
- 4.63V
- 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
PT7M7810LTEX FAQ
1.How can I place an order for PT7M7810LTEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PT7M7810LTEX 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 PT7M7810LTEX reliable?
The price and inventory of PT7M7810LTEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PT7M7810LTEX is usually 5 days.
3.What payment methods are accepted for PT7M7810LTEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PT7M7810LTEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PT7M7810LTEX?
PT7M7810LTEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PT7M7810LTEX 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 PT7M7810LTEX?
For technical support, including PT7M7810LTEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PT7M7810LTEX requirements.
6.How does Aetrix verify that PT7M7810LTEX is sourced from the original manufacturer or authorized distributors?
All PT7M7810LTEX 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 PT7M7810LTEX meets industry standards.
7.What is the process for return or replacement of PT7M7810LTEX?
All PT7M7810LTEX units undergo pre-shipment inspection (PSI). If there is an issue with PT7M7810LTEX, 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 PT7M7810LTEX part is unused and in its original packaging.
Return procedure for PT7M7810LTEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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