SCES955 September   2023 TXH0137D-Q1

ADVANCE INFORMATION  

  1.   1
  2. 1Features
  3. 2Applications
  4. 3Description
  5. 4Pin Configuration and Functions
  6. 5Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Switching Characteristics
    7. 5.7 Typical Characteristics
  7. 6Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
    4. 6.4 Device Functional Modes
      1. 6.4.1 Resistive Load Drive
      2. 6.4.2 ON State Input Current
      3. 6.4.3 High-Drive Outputs
  8.   Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 TTL and other Logic Inputs
        2. 7.2.2.2 High-Impedance Input Drivers
        3. 7.2.2.3 Output Low Voltage
      3. 7.2.3 Application Curve
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
      3. 7.4.3 Thermal Considerations
        1. 7.4.3.1 Improving Package Thermal Performance
  9. 7Device and Documentation Support
    1. 7.1 Receiving Notification of Documentation Updates
    2. 7.2 Support Resources
    3. 7.3 Trademarks
    4. 7.4 Electrostatic Discharge Caution
    5. 7.5 Glossary
  10. 8Revision History
  11. 9Mechanical, Packaging, and Orderable Information
    1. 9.1 Packaging Option Addendum
    2. 9.2 Tape and Reel Information
    3. 9.3 Mechanical Data

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • PW|14
Thermal pad, mechanical data (Package|Pins)

6.4.1 Resistive Load Drive

When driving a resistive load, a pull-up resistor is needed to limit the current through the pass transistor for a logic level of 210 mV to 450 mV when the TXH0137D-Q1 is in the low state to about 100 mA. To calculate the pull-up resistor value use the following equation.

Equation 1. RPU=(VPU - 0.21 V)0.1 A

where

  • RPU is the pull-up resistor
  • VPU is the pull-up voltage
  • 0.21 V is the low logic level voltage
  • 0.1 A is the maximum drive strength for the low logic level current

Table 6-1 provides the resistor values, reference voltages and currents at 100 mA, 50 mA, 25 mA, 15 mA, and 3 mA. The resistor value shown are recommended for typical VOL or less.

Table 6-1 Pull-Up Resistor Values

VPU (V)
  • Pull-Up Resistor Values (Ω) (1)

100 mA

50 mA

25 mA

15 mA

3 mA

30 V

298

596

1192

1986

9930

24 V

238

476

952

1586

7930

12 V

118

236

472

786

3930

5 V

48

96

192

319

1597

3.3 V

31

62

124

206

1030

2.5 V

23

46

92

153

763

1.8 V

16

32

64

106

530

1.5 V

13

26

52

86

430
(1) Use +10% to compensate for VPU range and resistor tolerance