SCAS994 March   2024 SN74LV8T595

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 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Timing Characteristics
    7. 5.7 Switching Characteristics
    8. 5.8 Noise Characteristics
    9. 5.9 Typical Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Balanced CMOS Push-Pull Outputs
      2. 7.3.2 Balanced CMOS 3-State Outputs
      3. 7.3.3 Latching Logic with Known Power-Up State
      4. 7.3.4 LVxT Enhanced Input Voltage
      5. 7.3.5 Clamp Diode Structure
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
        1. 8.2.1.1 Power Considerations
        2. 8.2.1.2 Input Considerations
        3. 8.2.1.3 Output Considerations
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • BQB|16
  • PW|16
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.3.3 Latching Logic with Known Power-Up State

This device includes latching logic circuitry. Latching circuits commonly include D-type latches and D-type flip-flops, but include all logic circuits that act as volatile memory. In typical logic devices, the output state of each latching circuit is unknown after power is initially applied; however, this device includes an added Power On Reset (POR) circuit which sets the states of all included latching circuits during the power-up ramp prior to the device starting normal functionality.

GUID-20230825-SS0I-TXJ9-JFMD-1RQZR7NVGFHZ-low.svgFigure 7-2 Supply (VCC) Ramp Characteristics for Known Power-Up State

Figure 7-2 shows a correct supply voltage turn-on ramp and defines values used in the Recommended Operating Conditions and Electrical Characteristics tables.

Prior to starting the power-on ramp, the supply must be completely off (VCC ≤ VPOR(min)).

The supply voltage must ramp at a rate within the range provided in the Recommended Operating Conditions table.

The output state of each latching logic circuit only remains stable as long as power is applied to the device (VCC ≥ VPOR(max)).

Variation from these recommendations will result in the device having an unknown power-up state.