Texas Instruments TLV809J25DBVR

Overview

TLV809J25DBVR from Texas Instruments is a 3-pin push-pull supply voltage supervisor IC designed for undervoltage monitoring and power-on reset generation in DSP, FPGA, and microcontroller-based systems. It features a precise 2.25 V threshold voltage (V_IT–), 200 ms fixed reset delay time (t_d), 9 µA typical supply current (I_DD), and operates across –40°C to +85°C. It is used in battery-powered equipment to ensure reliable system initialization during brownout conditions.

For engineers reviewing the TLV809J25DBVR datasheet, TLV809J25DBVR pinout, TLV809J25DBVR application, or TLV809J25DBVR equivalent, key selection considerations include its fixed 2.25 V detection threshold, push-pull RESET output with no external pull-up required, 200 ms reset timeout, SOT-23 (DBV) package compatibility, and direct functional alignment with legacy MAX809 designs.

Technical Context

The TLV809J25DBVR implements a precision bandgap reference and comparator circuit to monitor VDD against a factory-trimmed 2.25 V threshold with ±50 mV hysteresis (V_hys). Its internal oscillator-driven timer initiates a 200 ms (typical) delay after VDD rises above V_IT–, ensuring stable deassertion of the active-low RESET signal.

This device operates in two functional modes: normal operation (VDD = 2 V to 6 V), where it continuously monitors for undervoltage events, and shutdown mode (VDD < 1.1 V), where RESET is forced active and the output enters high-impedance state. The push-pull output stage delivers VOL ≤ 0.3 V at 500 µA and VOH ≥ VDD – 0.2 V, eliminating need for external pull-up resistors.

Key Specifications

Pinout & Package

SOT-23 (DBV) package: 3-pin surface-mount, 2.90 mm × 1.60 mm body size, tape-and-reel delivery (3000 pcs/reel), RoHS-compliant, NIPDAU lead finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX809TRD25+T, TLV809J25DBVR offers 40% lower quiescent current for extended battery life; compared with TLV809K33DBVR, it provides accurate 2.25 V detection essential for 2.5 V systems-neither alternative shares identical threshold, making TLV809J25DBVR uniquely suited for 2.5 V rail monitoring.

Availability

TLV809J25DBVR is available at Aetrix Electronics and suitable for factory automation, portable and battery-powered equipment, and electricity meters requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for TLV809J25DBVR 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

Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and consumer markets since 1930.

The TLV809 family was developed to provide cost-effective, low-power, pin-compatible alternatives to legacy voltage supervisors-specifically targeting DSP, FPGA, and microcontroller reset management in space-constrained, battery-sensitive applications.

FAQ

What is the exact threshold voltage of TLV809J25DBVR?

The TLV809J25DBVR has a guaranteed threshold voltage (V_IT–) of 2.25 V, with a min/max specification of 2.20 V to 2.30 V over the full –40°C to +85°C operating temperature range. This value is factory-trimmed and applies specifically to the J25 variant, distinguishing it from other TLV809 family members like the K33 (2.93 V) or I50 (4.55 V).

Does TLV809J25DBVR require an external pull-up resistor on the RESET pin?

No, TLV809J25DBVR does not require an external pull-up resistor because it features a push-pull output stage. The RESET pin actively drives high or low depending on VDD status, eliminating reliance on external components and reducing board area and BOM cost-unlike open-drain alternatives such as the TLV803 series.

What is the reset delay time of TLV809J25DBVR and how is it implemented?

The TLV809J25DBVR provides a fixed 200 ms typical reset delay time (t_d), ranging from 120 ms to 280 ms. This delay begins when VDD rises above the 2.25 V threshold and is generated by an internal oscillator-driven timer-no external capacitors or resistors are needed, ensuring consistent timing across units and temperatures.

Is TLV809J25DBVR pin-compatible with MAX809?

Yes, TLV809J25DBVR is explicitly designed as a pin-for-pin compatible replacement for the MAX809 family. It uses the same SOT-23 (DBV) package, identical pinout (GND, RESET, VDD), and matches the 2.25 V threshold and 200 ms delay of the MAX809TRD25+T, enabling direct substitution in legacy designs without PCB modification.

What is the maximum supply voltage rating for TLV809J25DBVR?

The absolute maximum supply voltage (VDD) for TLV809J25DBVR is 6.5 V, but the recommended operating range is 2 V to 6 V. Continuous operation at 6.5 V is limited to 1000 hours per TI's reliability guidance; for robust long-term use, VDD should be maintained within the 2–6 V range with a 0.1 µF ceramic bypass capacitor to GND.