SLVSA03D June   2010  – March 2016 TLV809


  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Voltage Options
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements
    7. 7.7 Switching Characteristics
    8. 7.8 Typical Characteristics
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Supply Voltage Monitoring
      2. 8.3.2 RESET Output
    4. 8.4 Device Functional Modes
  9. Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 VDD Transient Rejection
      2. 9.1.2 Reset During Power-Up and Power-Down
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curve
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Community Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information


机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)

1 Features

  • 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

2 Applications

  • DSPs, Microcontrollers, and Microprocessors
  • Wireless Communication Systems
  • Portable and Battery-Powered Equipment
  • Programmable Controls
  • Intelligent Instruments
  • Industrial Equipment
  • Notebook and Desktop Computers
  • Automotive Systems

Typical Application

TLV809 typ_app_lvsa03.gif

3 Description

The TLV809 family of supervisory circuits provides circuit initialization and timing supervision, primarily for digital signal processors (DSPs) and processor-based systems.

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.

The TLV803 has an active-low, push-pull RESET output. See the TLV803 for an open-drain RESET output and the TLV810 for a push-pull, active-high RESET output.

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.

Device Information(1)

TLV809 SOT-23 (3), DBV 2.90 mm × 1.60 mm
SOT-23 (3), DBZ 2.92 mm × 1.30 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

4 Revision History

Changes from C Revision (February 2012) to D Revision

  • Added Device Information table, Pin Configuration and Functions section, ESD Ratings table, Overview section, Feature Description section, Device Functional Modes section, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information sectionGo
  • Deleted pinout drawing from page 1 Go
  • Changed Description section: added third paragraph and changed section wording for clarityGo
  • Changed Voltage Options table: changed title, deleted duplicated data already in POA Go
  • Deleted soldering temperature parameter from Absolute Maximum Ratings table Go
  • Changed IDD parameter test conditions in Electrical Characteristics table Go

Changes from B Revision (September 2010) to C Revision

  • Changed TLV809L30 DBZ ordering information column in Package/Ordering Information tableGo
  • Changed TLV809K33 DBZ ordering information column in Package/Ordering Information tableGo
  • Changed first TLV809I50 DBZ ordering information entry in Package/Ordering Information tableGo

Changes from A Revision (July 2010) to B Revision

  • Updated document format to current standardsGo
  • Added DBZ package to pinout figureGo
  • Added DBZ package to Package/Ordering Information tableGo
  • Added Thermal Information tableGo
  • Changed Figure 3Go