SCLS595B November   2004  – August 2024 CD74HC4538-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Description
  4. 3 Pin Configuration and Functions
  5. 4 Specifications
    1. 4.1 Absolute Maximum Ratings
    2. 4.2 ESD Ratings
    3. 4.3 Recommended Operating Conditions
    4. 4.4 Thermal Information
    5. 4.5 Electrical Characteristics
    6. 4.6 Timing Requirements
    7. 4.7 Switching Characteristics
    8. 4.8 Operating Characteristics
    9. 4.9 Typical Characteristics
  6. 5 Parameter Measurement Information
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Typical Application
    2. 7.2 Power Supply Recommendations
    3. 7.3 Layout
      1. 7.3.1 Layout Guidelines
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support (Analog)
      1. 8.1.1 Related Links
    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. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

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

5 Parameter Measurement Information

Load Circuit and Voltage Waveforms

CD74HC4538-Q1 Load Circuit Figure 5-1 Load Circuit
CD74HC4538-Q1 Voltage Waveforms Pulse Durations Figure 5-2 Voltage Waveforms Pulse Durations
CD74HC4538-Q1 Voltage Waveforms Setup and Hold and Input Rise and Fall TimesFigure 5-3 Voltage Waveforms Setup and Hold and Input Rise and Fall Times
CD74HC4538-Q1 Voltage Waveforms Propagation Delay and Output Transition TimesFigure 5-4 Voltage Waveforms Propagation Delay and Output Transition Times
Note:
  • CL includes probe and test-fixture capacitance.
  • Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr = 6 ns, tf = 6 ns.
  • For clock inputs, fmax is measured when the input duty cycle is 50%.
  • The outputs are measured one at a time, with one input transition per measurement.
  • tPLH and tPHL are the same as tpd.