JAJSON0F December   1982  – May 2022 SN54HC244 , SN74HC244

PRODUCTION DATA  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics
    6. 6.6  Electrical Characteristics – SN54HC244
    7. 6.7  Electrical Characteristics – SN74HC244
    8. 6.8  Switching Characteristics
    9. 6.9  Switching Characteristics – CL = 50 pF
    10. 6.10 Switching Characteristics – CL = 150 pF
    11. 6.11 Typical Characteristic
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curve
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Links
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 サポート・リソース
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

パッケージ・オプション

デバイスごとのパッケージ図は、PDF版データシートをご参照ください。

メカニカル・データ（パッケージ｜ピン）
  • DB|20
  • NS|20
  • N|20
  • DW|20
  • PW|20
サーマルパッド・メカニカル・データ
発注情報

7 Parameter Measurement Information

GUID-568E9F45-C94C-4AF5-A6AE-535B60443819-low.gifFigure 7-1 Load Circuit
GUID-9ADBE4E5-6BD5-4F63-97C3-24E878C701D2-low.gifFigure 7-2 Propagation Delay and
Output Transition Times
GUID-C41F3815-80C5-48B1-B6F8-2983C3E876B6-low.gifFigure 7-3 Input Rise and Fall Times
GUID-A17173FD-5389-40C9-9D33-61D4E60136D0-low.gifFigure 7-4 Enable and Disable Times
for 3-State Outputs
Note: NOTE:

A. CL includes probe and test-fixture capacitance.

B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.

C. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr = 6 ns, tf = 6 ns.

D. The outputs are measured one at a time with one input transition per measurement.

E. tPLZ and tPHZ are the same as tdis.

F. tPZL and tPZH are the same as ten.

G. tPLH and tPHL are the same as tpd.

Table 7-1 Switching Information Table
PARAMETERRLCLS1S2
tentPZH1 kΩ50 pF or 150 pFOpenClosed
tPZL1 kΩ50 pF or 150 pFClosedOpen
tdistPHZ1 kΩ50 pFOpenClosed
tPLZ1 kΩ50 pFClosedOpen
tpd or tt—50 pF or 150 pFOpenOpen