SCHS155E November   1998  – May 2024 CD54HC164 , CD54HCT164 , CD74HC164 , CD74HCT164

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 Recommended Operating Conditions
    3. 4.3 Thermal Information
    4. 4.4 Electrical Characteristics
    5. 4.5 Prerequisite for Switching Characteristics
    6. 4.6 Switching 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 Power Supply Recommendations
  9. 8 Layout
    1. 8.1 Layout Guidelines
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
    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

6.3 Device Functional Modes

Truth Table(1)
OPERATING MODE INPUTS OUTPUTS
CLR CLK A B QA QB- QH
RESET (CLEAR) L X X X L L - L
Shift H ↑ I I L qA - qF
H ↑ I h L qA - qF
H ↑ h I L qA - qF
H ↑ h h H qA - qF
(1) H = High voltage level.
h = High voltage level one set-up time prior to the low-to-high clock transition.
I = Low voltage level one set-up time prior to the low-to-high clock transition.
L = Low voltage level.
X = Don't care.
↑ = Transition from low to high level.
qn = Lower case letters indicate the state of the reference input clock transition.