SCES565H April   2004  – March 2016 SN74AVCH8T245

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Description (continued)
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Thermal Information
    5. 7.5  Electrical Characteristics
    6. 7.6  Switching Characteristics, VCCA = 1.2 V
    7. 7.7  Switching Characteristics, VCCA= 1.5 V ± 0.1 V
    8. 7.8  Switching Characteristics, VCCA= 1.8 V ± 0.15 V
    9. 7.9  Switching Characteristics, VCCA= 2.5 V ± 0.2 V
    10. 7.10 Switching Characteristics, VCCA= 3.3 V ± 0.3 V
    11. 7.11 Operating Characteristics
    12. 7.12 Typical Characteristics
  8. Parameter Measurement Information
  9. Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Fully Configurable Dual-Rail Design
      2. 9.3.2 Supports High-Speed Translation
      3. 9.3.3 Partial-Power-Down Mode Operation
      4. 9.3.4 Bus-Hold Circuitry
      5. 9.3.5 VCC Isolation Feature
    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 Documentation Support
      1. 13.1.1 Related Documentation
    2. 13.2 Community Resources
    3. 13.3 Trademarks
    4. 13.4 Electrostatic Discharge Caution
    5. 13.5 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • Control Inputs (DIR and OE) VIH and VIL Levels Are Referenced to VCCA Voltage
  • Bus Hold on Data Inputs Eliminates the Need for External Pullup or Pulldown Resistors
  • VCC Isolation Feature
  • Fully Configurable Dual-Rail Design
  • I/Os Are 4.6-V Tolerant
  • Ioff Supports Partial-Power-Down Mode Operation
  • Max Data Rates:
    • 320 Mbps (VCCA ≥ 1.8 V and VCCB ≥ 1.8 V)
    • 170 Mbps (VCCA ≤ 1.8 V or VCCB ≤ 1.8 V)
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 8000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)

2 Applications

  • Personal Electronics
  • Industrial
  • Enterprise
  • Telecommunications

3 Description

The SN74AVCH8T245 is an 8-bit noninverting bus transceiver that uses two separate configurable power-supply rails. The A port is designed to track VCCA, which accepts any supply voltage from 1.2 V to 3.6 V. The B port is designed to track VCCB, which also accepts any supply voltage from 1.2 V to 3.6 V. This allows for universal low-voltage bidirectional translation between any of the 1.2-V, 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes.

The SN74AVCH8T245 is designed for asynchronous communication between data buses. The device transmits data from either 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 outputs so the buses are effectively isolated.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
SN74AVCH8T245 TVSOP (24) 5.00 mm × 4.40 mm
TSSOP (24) 7.80 mm × 4.40 mm
VQFN (24) 5.50 mm × 3.50 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Logic Diagram (Positive Logic)

SN74AVCH8T245 ld_ces565.gif