A newer version of this product is available
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Drop-in replacement with upgraded functionality to the compared device.
TLV809E ACTIVE Low-power voltage supervisor (reset IC) with active-low, push-pull output The new TLV809E provides improved performance with lower quiescent current, higher accuracy, lower VPOR, and offered in smaller packages

Product details


Number of supplies monitored 1 Threshold voltage 1 (Typ) (V) 2.25, 2.64, 2.93, 4.55 Features Ease-of-use Reset threshold accuracy (%) 2.2 Output driver type/reset output Active-low, Push-pull Time delay (ms) 200 Rating Catalog Watchdog timer WDI (sec) None Operating temperature range (C) -40 to 85 open-in-new Find other Supervisor & reset ICs

Package | Pins | Size

SOT-23 (DBV) 3 5 mm² 2.9 x 1.6 SOT-23 (DBZ) 3 7 mm² 2.92 x 2.37 open-in-new Find other Supervisor & reset ICs


  • Precision supply voltage monitor: 2.5 V, 3 V, 3.3 V, 5 V
  • Power-on reset generator with a fixed delay time of 200 ms
  • Supply current: 9 µA (typical)
  • Temperature range: –40°C to +85°C
  • 3-Pin SOT-23 package
  • Pin-for-pin compatible with the MAX809
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The TLV809 family of supervisory circuits provides circuit initialization and timing supervision, primarily for digital signal processors (DSPs) and processor-based systems. The newer TLV809E device is a pin-to-pin compatible alternative.

During power-on, RESET is asserted when the supply voltage (VDD) becomes greater than 1.1 V. Thereafter, the supervisory circuit monitors VDD and keeps RESET active as long as VDD remains below the threshold voltage, VIT. An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The delay time (td(typ) = 200 ms) starts after VDD rises above the threshold voltage, VIT. When the supply voltage drops below the VIT threshold voltage, the output becomes active (low) again. No external components are required. All devices in this family have a fixed sense-threshold voltage (VIT) set by an internal voltage divider.

This product family is designed for supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V. The circuits are available in a 3-pin SOT-23 package. The TLV809 devices are characterized for operation over a temperature range of –40°C to +85°C.

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Technical documentation

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Type Title Date
* Data sheet TLV809 3-Pin Supply Voltage Supervisor datasheet (Rev. F) Dec. 30, 2020
Application note Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A) Mar. 17, 2020
Selection guide Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) Feb. 28, 2020
Technical article Using low-Iq voltage supervisors to extend battery life in handheld electronics Sep. 27, 2019
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics Jun. 28, 2019
User guide TIDA-00274 Sensorless 3-Phase BLDC Drive Jul. 16, 2014
User guide TIDA-00274 Test Results Jul. 16, 2014

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide
The TLV809KEVM-019 evaluation module (EVM) is a fully-assembled and tested circuit that lets you easily evaluate the TLV809K33 supply voltage supervisor (SVS) at a supply voltage of 3.3 V. The TLV809K33 device is an active-low reset SVS. The output (reset) of the EVM is either high (...)
  • 3-pin SOT-23 package
  • Supply current: 9 µA (typical)
  • Precision supply-voltage monitor: 2.5 V, 3 V, 3.3 V, 5 V
  • Power-on reset generator with fixed delay time of 200 ms
  • Pin-to-pin compatible with MAX809
  • Push-pull, active-low output
  • Temperature range from –40°C to +85°C

Software development

TIDC517.ZIP (94 KB)

Design tools & simulation

PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
TIDR892.PDF (61 KB)
TIDR893.PDF (44 KB)
TIDR894.ZIP (269 KB)
TIDC516.ZIP (346 KB)

Reference designs

Cost-effective 3-phase Brushless DC Drive for Sensor-less Trapezoidal Control Reference Design
TIDA-00274 This reference evaluation module, featuring DRV8313, 3-phase driver with integrated MOSFETs and MSP430G2553 MCU, provides a cost effective sensor-less solution to run of 3-phase BLDC motor in trapezoidal commutation. Reference design software comes with easy to use GUI for quick evaluation.  (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SOT-23 (DBV) 3 View options
SOT-23 (DBZ) 3 View options

Ordering & quality

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Support & training

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