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Diodes Incorporated PT7M7824RTAEX
- Part No.:
- PT7M7824RTAEX
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
PT7M7824RTAEX.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,728
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Product details
Overview
PT7M7824RTAEX from Diodes Incorporated is a precision microprocessor (μP) supervisory circuit with push-pull active-low RESET output, manual-reset input (MR), and watchdog timer (WDI) functionality. It features a 2.63V reset threshold (R suffix), 200ms reset pulse width, guaranteed RESET validity down to VCC = 1.0V, and operates across –40°C to +85°C for embedded power monitoring in industrial control systems.
For engineers reviewing the PT7M7824RTAEX datasheet, PT7M7824RTAEX pinout, PT7M7824RTAEX application, or PT7M7824RTAEX equivalent, key selection criteria include its dual-trigger reset assertion (power brownout + manual reset), integrated watchdog timeout of 1.6s, SOT23-5 package compatibility, and support for low-voltage operation in battery-backed systems.
Technical Context
The PT7M7824RTAEX implements a voltage-monitoring architecture that asserts RESET when VCC falls below 2.63V (±2.5% over temperature) and holds it low for ≥200ms after VCC recovers above threshold. Its internal timebase governs both reset timeout and watchdog timing, ensuring deterministic behavior during power transients.
It integrates three independent supervision functions: power-on/power-down reset generation, edge-triggered manual reset via CMOS-compatible MR pin, and watchdog monitoring of WDI toggling - all with guaranteed operation at VCC as low as 1.0V and no external components required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V ±2.5% over –40°C to +85°C - defines precise brownout detection point for 3.3V/2.8V rail monitoring |
| Reset Pulse Width | 200ms typ. - ensures sufficient hold time for μP initialization after power recovery or manual reset |
| Watchdog Timeout | 1.6s typ. - provides robust software liveliness check without requiring external timing components |
| Supply Voltage Range | 1.0V to 5.5V - enables operation during deep brownout and supports wide-input power architectures |
| RESET Output Type | Push-pull active-low - drives logic directly without pull-up resistor; sinks up to 3.2mA at VCC ≥4.5V |
| MR Input Logic | CMOS-compatible active-low with internal 35–75kΩ pull-up - simplifies push-button interface with no external bias needed |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded applications including networking and security systems |
Pinout & Package
PT7M7824RTAEX is housed in a 5-pin SOT23-5 (TA) plastic package with gull-wing leads, optimized for high-density PCB layouts and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | Primary supply rail; RESET assertion triggered when voltage drops below 2.63V |
| GND | Ground reference | Common return path for all internal circuits and output drivers |
| RESET | Active-low push-pull reset output | Drives μP reset pin low during fault conditions; valid down to VCC = 1.0V |
| MR | Manual-reset input | CMOS-compatible active-low trigger; internal pull-up eliminates external resistor |
| WDI | Watchdog input | Edge-sensitive input; reset asserted if no transition occurs within 1.6s |
Key Features
| Feature | Design Value |
|---|---|
| Precision voltage monitoring | 2.63V threshold with ±2.5% tolerance over full temperature range ensures reliable brownout detection |
| Dual-trigger reset assertion | Simultaneous support for power-supply faults, manual reset, and watchdog timeout - single-chip solution for multi-condition supervision |
| Low-voltage operation guarantee | RESET remains valid at VCC = 1.0V - critical for battery backup and ultra-low-power wake-up scenarios |
| Integrated watchdog timer | 1.6s timeout with edge-triggered WDI input - eliminates need for external RC timing network |
| Debounced manual-reset interface | Internal pull-up (35–75kΩ) and noise-immune logic - enables direct connection to momentary switch without filtering |
Applications
| Industrial PLC Controller | Network Router Power Management |
|---|---|
Use Scenario: Maintaining deterministic boot sequence during AC line sags or DC rail fluctuations in programmable logic controllers. IC Role / Device Role / Timing Role: μP supervisor asserting hardware reset to prevent corrupted firmware execution during brownout events. Use Value: 200ms guaranteed reset pulse ensures full μP core initialization before code execution resumes. |
Use Scenario: Ensuring clean restart of routing ASICs and PHYs after transient power interruptions in enterprise-grade routers. IC Role / Device Role / Timing Role: Dual-role supervisor providing both power-fail reset and watchdog-triggered recovery for packet-processing subsystems. Use Value: Push-pull RESET output drives multiple loads directly, eliminating external buffer stages in multi-rail designs. |
| Security System Sensor Hub | Embedded Storage Controller |
Use Scenario: Preventing false alarms or missed triggers caused by undervoltage-induced MCU lockup in battery-powered perimeter sensors. IC Role / Device Role / Timing Role: Low-threshold (2.63V) supervisor monitoring 3.3V system rail while supporting manual reset for field service. Use Value: Guaranteed RESET function at VCC = 1.0V allows continued supervision during battery depletion down to end-of-life voltage. |
Use Scenario: Safeguarding NAND flash controller state machines during unexpected power loss in SSD modules. IC Role / Device Role / Timing Role: Watchdog-enforced software health check combined with power-rail monitoring to prevent data corruption. Use Value: Edge-sensitive WDI input detects software hangs with <150ns pulse width - compatible with fast GPIO toggling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar μP supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| APX823S263TSG-13 | 2.63V threshold, open-drain RESET, no WDI, 200ms timeout | Lacks watchdog and manual reset; suited only for basic power-monitoring use cases | Select when watchdog and MR are unnecessary and board layout requires open-drain drive |
| MAX6326XR26-T | 2.63V threshold, push-pull RESET, no MR or WDI, 140ms min timeout | Single-function reset generator; no supervision flexibility beyond power-up/down | Choose for cost-sensitive, minimal-feature applications where manual or watchdog reset is omitted |
Compared with APX823S263TSG-13 and MAX6326XR26-T, PT7M7824RTAEX uniquely combines push-pull RESET, manual reset, and watchdog in one SOT23-5 package - enabling full-system supervision without adding discrete logic or timing components.
Availability
PT7M7824RTAEX is available at Aetrix Electronics and suitable for industrial PLC controllers, network router power management, security system sensor hubs, and embedded storage controllers requiring stable component supply and long-term design-in support.
Supply support for PT7M7824RTAEX 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 was designed specifically for μP system reliability - integrating voltage monitoring, reset timing, manual reset, and watchdog functions into compact packages for space-constrained embedded applications.
FAQ
What is the exact reset threshold voltage for PT7M7824RTAEX?
The PT7M7824RTAEX 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 by the 'R' suffix in the part number and verified in the DC Electrical Characteristics table of the official datasheet (Document Number 43008 Rev 2-4).
Does PT7M7824RTAEX support watchdog functionality, and how is it enabled?
Yes, PT7M7824RTAEX includes a built-in watchdog timer with a typical timeout of 1.6 seconds. It is enabled by applying periodic rising or falling edges to the WDI pin; the timer resets on each edge. Leaving WDI unconnected or driving it with a high-impedance buffer disables the watchdog function entirely.
Can PT7M7824RTAEX operate reliably at VCC = 1.0V?
Yes - the device guarantees valid RESET/RESET output states down to VCC = 1.0V, as explicitly stated in the datasheet's "Features" and "Functional Description" sections. This ensures supervision capability during deep brownout or battery-depletion conditions.
What package type and pin count does PT7M7824RTAEX use?
PT7M7824RTAEX uses the TA package: a 5-pin SOT23-5 (Small Outline Transistor) plastic package with gull-wing leads. This is confirmed in the "Ordering Information" table and mechanical drawings of the official Diodes datasheet (Document Number 43008 Rev 2-4).
PT7M7824RTAEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- 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/Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
PT7M7824RTAEX FAQ
1.How can I place an order for PT7M7824RTAEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PT7M7824RTAEX 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 PT7M7824RTAEX reliable?
The price and inventory of PT7M7824RTAEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PT7M7824RTAEX is usually 5 days.
3.What payment methods are accepted for PT7M7824RTAEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PT7M7824RTAEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PT7M7824RTAEX?
PT7M7824RTAEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PT7M7824RTAEX 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 PT7M7824RTAEX?
For technical support, including PT7M7824RTAEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PT7M7824RTAEX requirements.
6.How does Aetrix verify that PT7M7824RTAEX is sourced from the original manufacturer or authorized distributors?
All PT7M7824RTAEX 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 PT7M7824RTAEX meets industry standards.
7.What is the process for return or replacement of PT7M7824RTAEX?
All PT7M7824RTAEX units undergo pre-shipment inspection (PSI). If there is an issue with PT7M7824RTAEX, 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 PT7M7824RTAEX part is unused and in its original packaging.
Return procedure for PT7M7824RTAEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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