SCAS287U JANUARY   1993  – January 2017 SN54LVC74A , SN74LVC74A

 

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information: SN74LVC74A
    5. 6.5  Electrical Characteristics
    6. 6.6  Timing Requirements: SN54LVC74A
    7. 6.7  Timing Requirements: SN74LVC74A
    8. 6.8  Timing Requirements: SN74LVC74A, -40°C to 125°C and -40°C to 85°C
    9. 6.9  Switching Characteristics: SN54LVC74A
    10. 6.10 Switching Characteristics: SN74LVC74A
    11. 6.11 Switching Characteristics: SN74LVC74A, -40°C to 125°C and -40°C to 85°C
    12. 6.12 Operating Characteristics
    13. 6.13 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
  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 Related Links
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 Community Resource
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

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

1 Features

  • Operate From 1.65 V to 3.6 V
  • Inputs Accept Voltages to 5.5 V
  • Maximum tpd of 5.2 ns at 3.3 V
  • Typical VOLP (Output Ground Bounce)
    <0.8 V at VCC = 3.3 V, TA = 25°C
  • Typical VOHV (Output VOH Undershoot)
    >2 V at VCC = 3.3 V, TA = 25°C
  • Latch-Up Performance Exceeds 250 mA Per JESD 17
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 1000-V Charged-Device Model (C101)

2 Applications

  • Servers
  • Medical, Healthcare, and Fitness
  • Telecom Infrastructures
  • TVs, Set-Top Boxes, and Audio
  • Test and Measurement
  • Industrial Transport
  • Wireless Infrastructure
  • Enterprise Switching
  • Motor Drives
  • Factory Automation and Control

3 Description

The SNx4LVC74A devices integrate two positive-edge triggered D-type flip-flops in one convenient device.

The SN54LVC74A is designed for 2.7-V to 3.6-V VCC operation, and the SN74LVC74A is designed for 1.65-V to 3.6-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) input 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.

The data I/Os and control inputs are overvoltage tolerant. This feature allows the use of these devices for down-translation in a mixed-voltage environment.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
SNJ54LVC74AFK LCCC (20) 8.89 mm × 8.89 mm
SNJ54LVC74AJ CDIP (14) 19.56 mm × 6.67 mm
SNJ54LVC74AW CFP (14) 9.21 mm × 5.97 mm
SN74LVC74AD SOIC (14) 8.65 mm × 3.91 mm
SN74LVC74ADB SSOP (14) 6.20 mm × 5.30 mm
SN74LVC74ANS SO (14) 10.30 mm × 5.30 mm
SN74LVC74APW TSSOP (14) 5.00 mm × 4.40 mm
SN74LVC74ARGY VQFN (14) 3.50 mm × 3.50 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Logic Diagram, Each Flip-Flop (Positive Logic)

SN54LVC74A SN74LVC74A ld_cas287.gif