Diodes Incorporated PT7M6315US29D2TBEX

Overview

PT7M6315US29D2TBEX from Diodes Incorporated is a precision supervisory circuit designed to monitor V_CC supply voltage in microprocessor and digital systems. It asserts an open-drain active-low RESET signal when V_CC drops below 2.9V (±1.5% at 25°C), with a factory-programmed reset timeout of 26ms (typical), operating across 1.0V–5.5V supply range and -40°C to +85°C temperature range.

For engineers reviewing the PT7M6315US29D2TBEX datasheet, PT7M6315US29D2TBEX pinout, PT7M6315US29D2TBEX application, or PT7M6315US29D2TBEX equivalent, key selection criteria include reset threshold accuracy, open-drain output compatibility with higher-voltage pull-ups, manual reset debouncing capability, and SOT143-4 package suitability for space-constrained embedded power monitoring.

Technical Context

The PT7M6315US29D2TBEX implements a fixed-threshold voltage monitor with hysteresis (50mV typical) to prevent oscillation during brownout recovery. Its internal timing delay block ensures RESET remains asserted for 26ms after V_CC rises above 2.9V or after MR deassertion.

It features a debounced manual reset input (MR) with 26ms pulse width guarantee, and supports operation down to 1.0V supply - enabling reliable reset assertion during deep brownout. The open-drain RST output allows level-shifting via external pull-up to voltages exceeding V_CC, supporting mixed-voltage system interfacing.

Key Specifications

Pinout & Package

PT7M6315US29D2TBEX is housed in a Pb-free, RoHS-compliant 4-pin SOT143 (TB) package measuring 2.9mm × 1.3mm × 1.0mm, optimized for high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX809SEUR+T and TPS3808G33DBVR, PT7M6315US29D2TBEX delivers precise 2.9V monitoring with guaranteed 26ms reset hold and integrated MR debouncing - critical for deterministic µP restart in industrial and medical systems where fixed, minimal timeout and manual intervention are required.

Availability

PT7M6315US29D2TBEX is available at Aetrix Electronics and suitable for industrial PLC I/O modules, smart meter MCU supervision, and medical infusion pump controllers requiring stable component supply and long-term lifecycle support.

Supply support for PT7M6315US29D2TBEX 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 consumer markets.

The PT7M6315US series belongs to Diodes' supervisory IC product line, engineered specifically for cost-sensitive, space-constrained embedded systems requiring accurate, single-function power-on reset and brownout protection without external components.

FAQ

What is the exact reset threshold voltage for PT7M6315US29D2TBEX?

The PT7M6315US29D2TBEX has a factory-trimmed nominal reset threshold voltage of 2.9V, with ±1.5% accuracy at 25°C and ±2.5% over the full -40°C to +85°C operating temperature range. This value is defined as V_TH- - the voltage at which RESET is asserted during V_CC fall.

Can the RST output be pulled up to a voltage higher than V_CC?

Yes. The RST pin is an N-channel open-drain output, allowing connection to an external pull-up resistor tied to a voltage rail higher than V_CC - for example, pulling RST to 3.3V while V_CC is 1.8V. The device guarantees V_OL ≤ 0.4V at I_OH = 8mA and V_CC = 5V, ensuring clean logic-low assertion.

Is manual reset (MR) debounced internally, and what is its timing behavior?

Yes. The MR input is internally debounced with a fixed 26ms pulse width - identical to the reset timeout period. When MR is pulled low, RST asserts immediately and remains low for ≥26ms after MR returns high, eliminating need for external RC filtering and ensuring robust push-button interface in noisy environments.

What package type and lead finish does PT7M6315US29D2TBEX use?

PT7M6315US29D2TBEX uses the SOT143-4 (TB) package: a 4-pin, surface-mount, Pb-free, RoHS-compliant, halogen- and antimony-free "Green" package measuring 2.9mm × 1.3mm × 1.0mm. The "TB" suffix denotes this specific mechanical outline and lead finish per Diodes' packaging standards.