SBOS551D March   2011  – January 2025 TLV3011-Q1 , TLV3011B-Q1 , TLV3012-Q1 , TLV3012B-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Thermal Information
    4. 5.4 Recommended Operating Conditions
    5. 5.5 Electrical Characteristics
    6. 5.6 Switching Characteristics
  7. 6 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
    4. 7.4 Device Functional Modes
      1. 7.4.1 Open Drain Output (TLV3011-Q1 and TLV3011B-Q1)
      2. 7.4.2 Push-Pull Output (TLV3012-Q1 and TLV3012B-Q1)
      3. 7.4.3 Voltage Reference
      4. 7.4.4 Internal Hysteresis
      5. 7.4.5 TLV3011B-Q1 and TLV3012B-Q1 Fail-Safe inputs
      6. 7.4.6 TLV3011B-Q1 and TLV3012B-Q1 Power On Reset
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Adding External Hysteresis
    2. 8.2 Typical Application
      1. 8.2.1 Under-Voltage Detection
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
    3. 8.3 System Examples
      1. 8.3.1 Power-On Reset
      2. 8.3.2 Relaxation Oscillator
    4. 8.4 Power Supply Recommendations
    5. 8.5 Layout
      1. 8.5.1 Layout Guidelines
      2. 8.5.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Receiving Notification of Documentation Updates
    2. 9.2 Support Resources
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.4.5 TLV3011B-Q1 and TLV3012B-Q1 Fail-Safe inputs

The TLV3011B-Q1 and TLV3012B-Q1 inputs are Fail-Safe up to 5.5V independent of V+ voltage. Fail-Safe is defined as maintaining the same high input impedance when V+ is unpowered or within the recommended operating ranges.

The Fail-Safe inputs can be any value between 0V and 5.5V, even while V+ is zero or ramping up or down. This feature avoids power sequencing issues as long as the input voltage range and supply voltage are within the specified ranges. This is possible since the inputs are not clamped to V+ and the input current maintains the value even when a higher voltage is applied to the inputs.

As long as one of the input pins remains within the valid input range, and the supply voltage is valid and not in POR, the output state is correct.

The following is a summary of the TLV3011B-Q1 and TLV3012B-Q1 device input voltage excursions and the outcomes:

  1. When both IN- and IN+ are within the specified input voltage range:
    1. If IN- is higher than IN+ and the offset voltage, the output is low.
    2. If IN- is lower than IN+ and the offset voltage, the output is high.
  2. When IN- is higher than the specified input voltage range and IN+ is within the specified voltage range, the output is low.
  3. When IN+ is higher than the specified input voltage range and IN- is within the specified input voltage range, the output is high
  4. When IN- and IN+ are both outside the specified input voltage range, the output state is indeterminate (random). Do not operate in this region.
Because the inputs do not have upper ESD diode clamps to V+, input voltages must be externally clamped to below 5.5V if the source can possibly exceed 5.5V. A current limiting resistor in series with the input is also recommend in case of input transients.