SCLS556C december   2003  – august 2023 SN74LV74A-Q1

PRODUCTION DATA  

  1.   1
  2. 1Features
  3. 2Description
  4. 3Revision History
  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  Timing Requirements, VCC = 2.5 V ±0.2 V
    7. 5.7  Timing Requirements, VCC = 3.3 V ±0.3 V
    8. 5.8  Timing Requirements, VCC = 5 V ±0.5 V
    9. 5.9  Switching Characteristics, VCC = 2.5 V ±0.2 V
    10. 5.10 Switching Characteristics, VCC = 3.3 V ±0.3 V
    11. 5.11 Switching Characteristics, VCC = 5 V ±0.5 V
    12. 5.12 Noise Characteristics
    13. 5.13 Operating Characteristics
  7. 6Parameter Measurement Information
  8. 7Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Device Functional Modes
  9. 8Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

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

7.1 Overview

This dual positive-edge-triggered D-type flip-flop is designed for 2-V to 5.5-V VCC operation.

A low level at the preset (PRE) or clear (CLR) inputs sets or resets the outputs, regardless of the levels of the other inputs. When PRE and CLR are inactive (high), data at the data (D) inputs meeting the setup-time requirements is transferred to the outputs on the positive-going edge of the clock pulse. Clock triggering occurs at a voltage level and is not directly related to the rise time of the clock pulse. Following the hold-time interval, data at the D input can be changed without affecting the levels at the outputs.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.