SCAS514H June   1995  – March 2024 SN54AC244 , SN74AC244

PRODMIX  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 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, VCC = 3.3 V ± 0.3 V
    6. 5.6 Switching Characteristics, VCC = 5 V ± 0.5 V
    7. 5.7 Operating Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Power Supply Recommendations
    2. 8.2 Layout
      1. 8.2.1 Layout Guidelines
        1. 8.2.1.1 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Receiving Notification of Documentation Updates
    2. 9.2 Support Resources
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • DB|20
  • RKS|20
  • NS|20
  • N|20
  • DGS|20
  • DW|20
  • PW|20
Thermal pad, mechanical data (Package|Pins)
Orderable Information

4 Pin Configuration and Functions

GUID-20200716-CA0I-S9LS-XJSH-FGFWDBZDT97R-low.gifFigure 4-1 SN54AC244 J or W Package; SN74AC244 DB, DGS, DW, N, NS, or PW Package
(Top View)
GUID-19C1A5EF-46D1-4CDC-AC74-0E7425F36DBA-low.pngFigure 4-3 SN54AC244 FK Package (Top View)
GUID-20210730-SS0I-6FGJ-V3VL-1HLPZRRWNCKT-low.gifFigure 4-2 SN74AC244 RKS Package (Top View)
Table 4-1 Pin Functions
PIN TYPE(1) DESCRIPTION
NAME NO.
1A1 2 I Input
1A2 4 I Input
1A3 6 I Input
1A4 8 I Input
1OE 1 I Output enable
1Y1 18 O Output
1Y2 16 O Output
1Y3 14 O Output
1Y4 12 O Output
2A1 11 I Input
2A2 13 I Input
2A3 15 I Input
2A4 17 I Input
2 OE 19 I Output enable
2Y1 9 O Output
2Y2 7 O Output
2Y3 5 O Output
2Y4 3 O Output
GND 10 — Ground
VCC 20 — Power pin
Thermal Pad(2) — The thermal pad can be connected to GND or left floating. Do not connect to any other signal or supply.
(1) Signal Types: I = Input, O = Output, I/O = Input or Output
(2) RKS package only