SCLS130E December   1982  – May 2016 SN54HC244 , SN74HC244

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  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. Parameter Measurement Information
  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. 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 Related Links
    2. 12.2 Community Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

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

1 Features

  • Wide Operating Voltage Range of 2 V to 6 V
  • High-Current Outputs Drive Up to 15 LSTTL Loads
  • 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers
  • Low Power Consumption: ICC, 80-µA (Maximum)
  • Typical tpd = 11 ns
  • ±6-mA Output Drive at 5 V
  • Low Input Current of 1 µA (Maximum)
  • On Products Compliant to MIL-PRF-38535,
    All Parameters Are Tested Unless Otherwise Noted. On All Other Products, Production Processing Does Not Necessarily Include Testing of All Parameters.

2 Applications

  • Servers
  • LED Displays
  • Network Switches
  • Telecom Infrastructure
  • Motor Drivers
  • I/O Expanders

3 Description

The SNx4HC244 octal buffers and line drivers are designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The SNx4HC244 devices are organized as two 4-bit buffers and drivers with separate output-enable (OE) inputs. When OE is low, the device passes noninverted data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state.

Device Information(1)

PART NUMBER PACKAGE (PINS) BODY SIZE (NOM)
SN54HC244 CDIP (20) 6.92 mm × 24.38 mm
CFP (20) 6.92 mm × 13.72 mm
LCCC (20) 8.89 mm × 8.89 mm
SN74HC244DB SSOP (20) 5.30 mm × 7.25 mm
SN74HC244DW SOIC (20) 7.50 mm × 12.80 mm
SN74HC244N PDIP (20) 6.30 mm × 25.40 mm
SN74HC244NS SOP (20) 5.30 mm × 12.60 mm
SN74HC244PW TSSOP (20) 4.40 mm × 6.50 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Logic Diagram (Positive Logic)

SN54HC244 SN74HC244 func_dia.gif