SCHS158F November   1998  – March 2022 CD54HC173 , CD54HCT173 , CD74HC173 , CD74HCT173

PRODUCTION DATA  

  1. 1 Features
  2. 2 Description
  3. 3 Revision History
  4. 4 Pin Configuration and Functions
  5. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 Recommended Operating Conditions
    3. 5.3 Thermal Information
    4. 5.4 Electrical Characteristics
    5. 5.5 Switching Characteristics
    6. 5.6 Prerequisite For Switching Characteristics
  6. 6 Parameter Measurement Information
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Device Functional Modes
  8. 8 Power Supply Recommendations
  9. 9 Layout
    1. 9.1 Layout Guidelines
  10. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  11. 11Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

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

7.3 Device Functional Modes

Table 7-1 Truth Table(1)(2)
INPUTS DATA OUTPUT
MR CP DATA ENABLE
E1 E2 D Qn
H X X X X L
L L X X X Q0
L ↑ H X X Q0
L ↑ X H X Q0
L ↑ L L L L
L ↑ L L H H
(1) H = High voltage level. L = Low voltage level. X = Irrelevant. ↑ = Transition from low to high level. Q0 = Level before the indicated steady-state input conditions were established.
(2) When either OE1 or OE2 (or both) is (are) high, the output is disabled to the high-impedance stat, however, sequential operation of the flip-flops is not affected.