SCAS375I March   1994  – January 2015 SN74LVC4245A

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Simplified Schematic
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1 Absolute Maximum Ratings, (please advise specific title)
    2. 6.2 Absolute Maximum Ratings, (please advise specific title)
    3. 6.3 ESD Ratings
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics, (please advise specific title)
    6. 6.6 Switching Characteristics
    7. 6.7 Typical Characteristics
  7. Parameter Measurement Information
    1. 7.1 A Port
    2. 7.2 B Port
  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 Curves
  10. 10Power Supply Recommendations
    1. 10.1 Power-Up Consideration
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Trademarks
    2. 12.2 Electrostatic Discharge Caution
    3. 12.3 Glossary

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • DB|24
  • DW|24
  • PW|24
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • Bidirectional Voltage Translator
  • 5.5 V on A Port and 2.7 V to 3.6 V on B Port
  • Control Inputs VIH/VIL Levels Are Referenced to VCCA Voltage
  • Latch-Up Performance Exceeds 250 mA Per JESD 17
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model
    • 200-V Machine Model
    • 1000-V Charged-Device Model

2 Applications

  • ATCA Solutions
  • CPAP Machines
  • Cameras: Surveillance Analog
  • Chemical or Gas Sensors
  • CT Scanners
  • DLP 3D Machine Vision and Optical Networking
  • Digital Signage
  • ECGs: Electrocardiograms
  • Field Transmitters: Pressure Sensors and Temperature Sensors
  • High-Speed Data Acquisition and Generation
  • HMI (Human Machine Interface)
  • RF4CE Remote Controls
  • Server Motherboards
  • Software Defined Radios (SDR)
  • Wireless LAN Cards and Data Access Cards
  • X-ray: Medical, Dental, and Baggage Scanners

Description

This 8-bit (octal) noninverting bus transceiver contains two separate supply rails; B port has VCCB, which is set at 3.3 V, and A port has VCCA, which is set at 5 V. This allows for translation from a 3.3-V to a 5-V environment, and vice versa.

The SN74LVC4245A device is designed for asynchronous communication between data buses. The device transmits data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the device so the buses are effectively isolated. The control circuitry (DIR, OE) is powered by VCCA.

The SN74LVC4245A device terminal out allows the designer to switch to a normal all-3.3-V or all-5-V 20-terminal SN74LVC4245 device without board re-layout. The designer uses the data paths for pins 2–11 and 14–23 of the SN74LVC4245A device to align with the conventional '245 terminal out.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
SN74LVC4245A SSOP (24) 8.20 mm × 5.30 mm
SOIC (24) 15.40 mm × 7.50 mm
TSSOP (24) 7.80 mm × 4.40 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

3 Simplified Schematic

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