SCLS345K May   1996  – April 2024 SN54AHC157 , SN74AHC157

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  Switching Characteristics, VCC = 3.3V ± 0.3V
    7. 4.7  Switching Characteristics, VCC = 5V ± 0.5V
    8. 4.8  Noise Characteristics
    9. 4.9  Operating Characteristics
    10. 4.10 Typical Characteristics
  6. 5 Parameter Measurement Information
  7. 6 Detailed Description
    1. 6.1 Functional Block Diagram
    2. 6.2 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Power Supply Recommendations
    2. 7.2 Layout
      1. 7.2.1 Layout Guidelines
      2. 7.2.2 Layout Example
  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)
  • DB|16
  • PW|16
  • NS|16
  • N|16
  • RGY|16
  • D|16
  • DGV|16
Thermal pad, mechanical data (Package|Pins)
Orderable Information

4.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)(1)
SN54AHC157 SN74AHC157 UNIT
MIN MAX MIN MAX
VCC Supply voltage 2 5.5 2 5.5 V
VIH High-level input voltage VCC= 2 V 1.5 1.5 V
VCC= 3V 2.1 2.1
VCC= 5.5 V 3.85 3.85
VIL Low-level Input voltage VCC= 2 V 0.5 0.5 V
VCC= 3 V 0.9 0.9
VCC= 5.5 V 1.65 1.65
VI Input voltage 0 5.5 0 5.5 V
VO Output voltage 0 VCC 0 VCC V
IOH High-level output current VCC= 2 V –0.05 –0.05 µA
VCC= 3.3 V ± 0.3 V –4 –4
VCC= 5 V ± 0.5 V –8 –8
IOL Low-level output current VCC= 2 V 0.05 0.05 µA
VCC= 3.3 V ± 0.3 V 4 4
VCC= 5 V ± 0.5 V 8 8
Δt/Δv Input Transition rise or fall rate VCC= 3.3 V ± 0.3 V 100 100 ns/V
VCC= 5 V ± 0.5 V 20 20
TA Operating free-air temperature –55 125 –40 125 °C
(1) All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004.