Diodes Incorporated PT7M7823TTAEX

Overview

PT7M7823TTAEX from Diodes Incorporated is a precision μP supervisor IC with 2.93V reset threshold, push-pull RESET output, manual-reset input (MR), and watchdog timer (WDI) - designed for reliable power-up/power-down sequencing and brownout protection in embedded microprocessor systems. It guarantees RESET assertion down to VCC = 1.0V, delivers 200ms reset pulse width, and operates across –40°C to +85°C.

For engineers reviewing the PT7M7823TTAEX datasheet, PT7M7823TTAEX pinout, PT7M7823TTAEX application, or PT7M7823TTAEX equivalent, key selection criteria include its 2.93V threshold accuracy (±2.5% over temperature), integrated watchdog timeout (1.6s typ), debounced MR input, and SOT23-5 package compatibility with space-constrained industrial control and networking hardware.

Technical Context

The PT7M7823TTAEX implements a dual-function supervisory architecture: a precision voltage monitor with hysteresis (4mV typ for T/S/R/K variants) and an independent watchdog timer that resets on WDI inactivity exceeding 1.6s. Its internal timebase ensures deterministic reset timing during power transitions.

It features a CMOS-compatible manual-reset input with internal pull-up (52kΩ typ), active-low push-pull RESET output capable of sinking 1.2mA at VCC ≥ 2.7V, and guaranteed logic-level validity across full 1.0V–5.5V supply range - enabling robust operation in low-voltage battery-backed systems.

Key Specifications

Pinout & Package

PT7M7823TTAEX is housed in a 5-pin SOT23-5 (TA) plastic package with gull-wing leads, optimized for automated assembly and thermal performance in high-density layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with APX823-29SA-7 and TPS3808G33DBVR, PT7M7823TTAEX uniquely integrates 2.93V precision monitoring, push-pull RESET, debounced MR, and WDI in one SOT23-5 package - delivering full supervisory functionality without external components or design compromises.

Availability

PT7M7823TTAEX is available at Aetrix Electronics and suitable for industrial PLC controllers, network router power management, security camera SoC modules, and storage server BMC monitoring requiring stable component supply and long-term production continuity.

Supply support for PT7M7823TTAEX 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 for industrial, computing, and communications markets.

PT7M7823TTAEX belongs to the PT7M78xx μP supervisor product line, engineered specifically to reduce component count and improve power-supply reliability in microprocessor-based systems through integrated voltage monitoring, reset generation, and watchdog supervision.

FAQ

What is the exact reset threshold voltage and tolerance for PT7M7823TTAEX?

The PT7M7823TTAEX has a nominal reset threshold voltage of 2.93V, with a guaranteed tolerance of ±2.5% over the full operating temperature range (–40°C to +85°C). This value is confirmed in the DC Electrical Characteristics table of the official Diodes datasheet (Document Number 43008 Rev 2-4), and applies to the "T" suffix variant.

Does PT7M7823TTAEX support manual reset and watchdog functions simultaneously?

Yes - PT7M7823TTAEX supports concurrent manual reset (MR) and watchdog (WDI) functionality. The MR input is debounced and internally pulled up (52kΩ typ), while WDI detects edges to reset the 1.6s watchdog timer. Both features operate independently and can trigger RESET simultaneously without conflict, as verified in the Function Comparison Table and Block Diagram.

What package type and pin count does PT7M7823TTAEX use?

PT7M7823TTAEX uses the TA package: a 5-pin SOT23-5 (Small Outline Transistor) plastic package with gull-wing leads. This is explicitly stated in the Ordering Information table (page 13) and confirmed by the Pin Configuration diagrams (pages 2–3) in the Diodes datasheet.

Is PT7M7823TTAEX compatible with 1.8V or 2.5V supply rails?

Yes - PT7M7823TTAEX operates across 1.0V to 5.5V supply range and guarantees valid RESET/RESET outputs down to VCC = 1.0V. Its 2.93V threshold remains accurate even at lower VCC levels, making it suitable for monitoring 3.3V rails in systems powered by 1.8V or 2.5V intermediate supplies, as specified in the Recommended Operating Conditions table.