SCES576G June   2004  – November 2014 SN74AVC4T245

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  Handling Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics
    6. 6.6  Operating Characteristics
    7. 6.7  Switching Characteristics: VCCA = 1.2 V
    8. 6.8  Switching Characteristics: VCCA = 1.5 V ± 0.1 V
    9. 6.9  Switching Characteristics: VCCA = 1.8 V ± 0.15 V
    10. 6.10 Switching Characteristics: VCCA = 2.5 V ± 0.2 V
    11. 6.11 Switching Characteristics: VCCA = 3.3 V ± 0.3 V
    12. 6.12 Typical Characteristics
  7. Parameter Measurement Information
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Fully Configurable Dual-Rail Design Allows Each Port to Operate Over the Full 1.2-V to 3.6-V Power-Supply Range
      2. 8.3.2 Supports High Speed Translation
      3. 8.3.3 Ioff Supports Partial-Power-Down Mode Operation
    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
  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
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • PW|16
  • RGY|16
  • D|16
  • DGV|16
  • RSV|16
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • Control Inputs VIH/VIL Levels Are Referenced to VCCA Voltage
  • Fully Configurable Dual-Rail Design Allows Each Port to Operate Over the Full 1.2-V to 3.6-V Power-Supply Range
  • I/Os Are 4.6-V Tolerant
  • Ioff Supports Partial Power-Down-Mode Operation
  • Maximum Data Rates
    • 380 Mbps (1.8-V to 3.3-V Translation)
    • 200 Mbps (< 1.8-V to 3.3-V Translation)
    • 200 Mbps (Translate to 2.5 V or 1.8 V)
    • 150 Mbps (Translate to 1.5 V)
    • 100 Mbps (Translate to 1.2 V)
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 8000-V Human-Body Model (A114-A)
    • 150-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)

2 Applications

  • Personal Electronics
  • Industrial
  • Enterprise
  • Telecom

Logic Diagram (Positive Logic)
for 1/2 of SN74AVC4T245

lo_ces576.gif

3 Description

This 4-bit noninverting bus transceiver uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.2 V to 3.6 V. The B port is designed to track VCCB. VCCB accepts any supply voltage from
1.2 V to 3.6 V. The SN74AVC4T245 is optimized to operate with VCCA/VCCB set at 1.4 V to 3.6 V. It is operational with VCCA/VCCB as low as 1.2 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 SN74AVC4T245 device 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 SN74AVC4T245 device is designed so that the control pins (1DIR, 2DIR, 1OE, and 2OE) are supplied by VCCA.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

The VCC isolation feature ensures that if either VCC input is at GND, then both ports are in the high-impedance state.

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.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
SN74AVC4T245 SOIC (16) 9.90 mm x 3.91 mm
TVSOP (16) 3.60 mm x 4.40 mm
TSSOP (16) 5.00 mm x 4.40 mm
VQFN (16) 4.00 mm x 3.50 mm
UQFN (16) 2.60 mm x 1.80 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.