SCES584B JUNE   2005  – November 2014 SN74LVC8T245

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
  4. Logic Diagram (Positive Logic)
  5. Revision History
  6. Description (continued)
  7. Pin Configuration and Functions
  8. Specifications
    1. 8.1  Absolute Maximum Ratings
    2. 8.2  Handling Ratings
    3. 8.3  Recommended Operating Conditions
    4. 8.4  Thermal Information DB, DBQ and DGV
    5. 8.5  Thermal Information PW and RHL
    6. 8.6  Electrical Characteristics
    7. 8.7  Switching Characteristics, VCCA = 1.8 V ± 0.15 V
    8. 8.8  Switching Characteristics, VCCA = 2.5 V ± 0.2 V
    9. 8.9  Switching Characteristics, VCCA = 3.3 V ± 0.3 V
    10. 8.10 Switching Characteristics, VCCA = 5 V ± 0.5 V
    11. 8.11 Operating Characteristics
    12. 8.12 Typical Characteristics
  9. Parameter Measurement Information
  10. 10Detailed Description
    1. 10.1 Overview
    2. 10.2 Functional Block Diagram
    3. 10.3 Feature Description
      1. 10.3.1 Fully Configurable Dual-Rail Design Allows Each Port to Operate Over the Full 1.65-V to 5.5-V Power-Supply Range
      2. 10.3.2 Ioff Supports Partial-Power-Down Mode Operation
    4. 10.4 Device Functional Modes
  11. 11Application and Implementation
    1. 11.1 Application Information
    2. 11.2 Typical Application
      1. 11.2.1 Design Requirements
      2. 11.2.2 Detailed Design Procedure
      3. 11.2.3 Application Curve
  12. 12Power Supply Recommendations
  13. 13Layout
    1. 13.1 Layout Guidelines
    2. 13.2 Layout Example
  14. 14Device and Documentation Support
    1. 14.1 Trademarks
    2. 14.2 Electrostatic Discharge Caution
    3. 14.3 Glossary
  15. 15Mechanical, Packaging, and Orderable Information

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)
  • DGV|24
  • RHL|24
  • DBQ|24
  • NS|24
  • DB|24
  • DW|24
  • PW|24
散热焊盘机械数据 (封装 | 引脚)
订购信息

1 Features

  • Control Inputs VIH/VIL Levels Are Referenced to VCCA Voltage
  • VCC Isolation Feature – If Either VCC Input Is at GND, All Are in the High-Impedance State
  • Fully Configurable Dual-Rail Design Allows Each Port to Operate Over the Full 1.65-V to 5.5-V Power-Supply Range
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 4000-V Human-Body Model (A114-A)
    • 100-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)

2 Applications

  • Personal Electronic
  • Industrial
  • Enterprise
  • Telecom

3 Description

This 8-bit noninverting bus transceiver uses two separate configurable power-supply rails. The SN74LVC8T245 is optimized to operate with VCCA and VCCB set at 1.65 V to 5.5 V. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.65 V to 5.5 V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.65 V to 5.5 V. This allows for universal low-voltage bidirectional translation between any of the 1.8-V, 2.5-V, 3.3-V, and 5.5-V voltage nodes.

The SN74LVC8T245 is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR) input and the output-enable (OE) input activate either the B-port outputs or the A-port outputs or place both output ports into the high-impedance mode. The device transmits data from the A bus to the B bus when the B-port outputs are activated, and from the B bus to the A bus when the A-port outputs are activated. The input circuitry on both A and B ports is always active and must have a logic HIGH or LOW level applied to prevent excess ICC and ICCZ.

The SN74LVC8T245 is designed so that the control pins (DIR and OE) are supplied by VCCA.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
SN74LVC8T245 SSOP (24) 8.20 mm x 5.30 mm
SSOP (24) 8.65 mm x 3.90 mm
TSSOP (24) 7.80 mm x 4.40 mm
TVSOP (24) 5.00 mm x 4.40 mm
VQFN (24) 5.50 mm x 3.50 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

4 Logic Diagram (Positive Logic)

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