SCHS287C December   2023  – May 2024 CD54AC240 , CD54AC244 , CD54ACT240 , CD54ACT241 , CD54ACT244 , CD74AC240 , CD74AC244 , CD74ACT240 , CD74ACT241 , CD74ACT244

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 Static Electrical Characteristics: AC Series
    5. 4.5 Electrical Characteristics: ACT Series
    6. 4.6 Switching Characteristics: AC Series
    7. 4.7 Switching Characteristics: ACT Series
  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)
  • N|20
  • DW|20
Thermal pad, mechanical data (Package|Pins)
Orderable Information

4.7 Switching Characteristics: ACT Series

tr, tl = 3 ns, CL = 50 pF
PARAMETER CHARACTERISTICS VCC (V) AMBIENT TEMPERATURE (TA) - °C UNIT
-40 to +85 -55 to +125
MIN MAX MIN MAX
Propagation Delays: Data to Outputs
tPLH ACT240 5(2) 2.3 7.8 2.2 8.6 ns
tPHL
tPLH ACT241, 244 5 2.5 8.7 2.4 9.6 ns
tPHL
tPZL Output Enable Times 5 3.5 12.2 3.4 13.4 ns
tPZH
tPLZ Output Disable Times 5 3.5 12.2 3.4 13.4 ns
tPHZ
Power Dissipation Capacitance
CPD§(3) ACT240 — 65 Typ 65 Typ pF
ACT241, 244 — 71 Typ 71 Typ pF
Min. (Valley) Voh
VOHV(1) During Switching of Other Outputs (Output Under Test Not Switching) 5 4 Typ @25°C V
Max. (Peak) VOL
VOLP(1) During Switching of Other Outputs (Output Under Test Not Switching) 5 1 Typ. @ 25°C V
CI Input Capacitance — — 10 — 10 pF
CO 3-State Output Capacitance — — 15 — 15 pF
(1) 3.3 V: min. is @ 3.6 V; max. is @ 3 V
(2) 5 V: min. is @ 5.5 V; max. is @ 4.5 V
(3) CPD is used to determine the dynamic power consumption, per package.
  1. For AC series: PD = VCC 2 fi (CPD + CL)
  2. For ACT series: PD = VCC 2 fi (CPD + CL) + VCC ΔlCC where fi = input frequency
    1. CL = output load capacitance
    2. VCC = supply voltage.