SCHS248B November   1998  – August 2024 CD54AC257 , CD54ACT257 , CD74AC257 , CD74ACT257 , CD74ACT258

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 Switching Specifications
  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 Power Supply Recommendations
    2. 7.2 Layout
      1. 7.2.1 Layout Guidelines
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support (Analog)
      1. 8.1.1 Related Documentation
    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)
  • J|16
Thermal pad, mechanical data (Package|Pins)
Orderable Information

4.5 Switching Specifications

Input tr, tf = 3ns, CL = 50pF (Worst Case)
PARAMETER SYMBOL VCC (V) -40°C TO 85°C -55°C TO 125°C UNITS
MIN TYP MAX MIN TYP MAX
AC TYPES
Propagation Delay, In to Y AC/ACT257 tPLH, tPHL 1.5 - - 106 - - 117 ns
3.3 (1) 3.3 - 11.8 3.3 - 13 ns
5(2) 2.4 - 8.5 2.3 - 9.3 ns
Propagation Delay, S to Y AC/ACT257 tPLH, tPHL 1.5 - - 153 - - 168 ns
3.3 4.8 - 17.1 4.7 - 18.8 ns
5 3.5 - 12.2 3.4 - 13.4 ns
Propagation Delay, OE to Y AC/ACT257 tPLZ, tPHZ, tPZL, tPZH 1.5 - - 167 - - 184 ns
3.3 5.3 - 18.7 5.2 - 20.6 ns
5 3.8 - 13.4 3.7 - 14.7 ns
Propagation Delay, In to Y ’AC/CD74ACT258 tPLH, tPHL 1.5 - - 91 - - 100 ns
3.3 2.9 - 10.2 2.8 - 11.2 ns
5 2.1 - 7.3 2 - 8 ns
Propagation Delay, S to Y ’AC/CD74ACT258 tPLH, tPHL 1.5 - - 153 - - 168 ns
3.3 4.8 - 17.1 4.7 - 18.8 ns
5 3.5 - 12.2 3.4 - 13.4 ns
Propagation Delay, OE to Y ’AC/CD74ACT258 tPLZ, tPHZ, tPZL, tPZH 1.5 - - 167 - - 184 ns
3.3 5.3 - 18.7 5.2 - 20.6 ns
5 3.8 - 13.4 3.7 - 14.7 ns
Three-State Output Capacitance CO - - - 15 - - 15 pF
Input Capacitance CI - - - 10 - - 10 pF
Power Dissipation Capacitance CPD (3) - - 130 - - 130 - pF
ACT TYPES
Propagation Delay, In to Y AC/ACT257 tPLH, tPHL 5 (2) 2.8 - 9.7 2.7 - 10.7 ns
Propagation Delay, S to Y AC/ACT257 tPLH, tPHL 5 4 - 14 3.9 - 15.4 ns
Propagation Delay, OE to Y AC/ACT257 tPLZ, tPHZ, tPZL, tPZH 5 4.1 - 14.6 4 - 16.1 ns
Propagation Delay, In to Y ’AC/CD74ACT258 tPLH, tPHL 5 2.4 - 8.5 2.3 - 9.3 ns
Propagation Delay, S to Y ’AC/CD74ACT258 tPLH, tPHL 5 4 - 14 3.9 - 15.4 ns
Propagation Delay, OE to Y ’AC/CD74ACT258 tPLZ, tPHZ, tPZL, tPZH 5 4.1 - 14.6 4 - 16.1 ns
Three-State Output Capacitance CO - - - 15 - - 15 pF
Input Capacitance CI - - - 10 - - 10 pF
Power Dissipation Capacitance CPD(3) - - 130 - - 130 - pF
(1) 3.3V Min is at 3.6V, Max is at 3V.
(2) 5V Min is at 5.5V, Max is at 4.5V.
(3) CPD is used to determine the dynamic power consumption per multiplexer.
Note:

AC: PD = CPD VCC 2 fi + ∑ (CL VCC 2 fo)

ACT: PD = CPD VCC 2 fi + ∑ (CL VCC 2 fo) + VCC ΔICC where fi = input frequency, fo = output frequency, CL = output load capacitance, VCC = supply voltage.