SCLS334J March   1996  – October 2014 SN74AHCT16244

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Simplified Schematic
  5. 5 Revision History
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 Handling Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Switching Characteristics, VCC = 5 V ± 0.5 V
    7. 7.7 Noise Characteristics
    8. 7.8 Operating Characteristics
    9. 7.9 Typical Characteristics
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
    4. 9.4 Device Functional Modes
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Trademarks
    2. 13.2 Electrostatic Discharge Caution
    3. 13.3 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • DGG|48
  • DL|48
  • DGV|48
Thermal pad, mechanical data (Package|Pins)
Orderable Information

9 Detailed Description

9.1 Overview

The SN74AHCT16244 device is a 16-bit buffer and line driver specifically designed to improve the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. This device can be used as a four 4-bit buffers, two 8-bit buffers, or one 16-bit buffer. It provides true outputs and symmetrical active-low output-enable (OE) inputs. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor. The minimum value of the resistor is determined by the current-sinking capability of the driver. The SN74AHCT16244 is characterized for operation from –40°C to 125°C.

9.2 Functional Block Diagram

logic_symbol_scls327.gif
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
Figure 3.

9.3 Feature Description

  • VCC is optimized at 5 V
  • Allows up voltage translation from 3.3 V to 5 V
    • Inputs accept VIH levels of 2 V
  • Slow edge rates minimize output ringing
  • Inputs are TTL-voltage compatible

9.4 Device Functional Modes

Table 1. Function Table
(Each 4-bit Buffer/Driver)

INPUTS OUTPUT
Y
OE A
L H H
L L L
H X Z