SCAS290Q January   1993  – January 2015 SN74LVC125A

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Simplified Schematic
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Switching Characteristics
    7. 6.7 Operating Characteristics
    8. 6.8 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 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. 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 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • D|14
  • RGY|14
  • DB|14
  • PW|14
  • NS|14
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • 3-State Outputs
  • Separate OE for all 4 buffers
  • Operates From 1.65 V to 3.6 V
  • Specified From –40°C to 85°C
    and –40°C to 125°C
  • Inputs Accept Voltages to 5.5 V
  • Max tpd of 4.8 ns at 3.3 V
  • Typical VOLP (Output Ground Bounce)
    < 0.8 V at VCC = 3.3 V, TA = 25°C
  • Typical VOHV (Output VOH Undershoot)
    > 2 V at VCC = 3.3 V, TA = 25°C
  • 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

  • Cable Modem Termination Systems
  • IP Phones: Wired and Wireless
  • Optical Modules
  • Optical Networking:
    • EPON or Video Over Fiber
  • Point-to-Point Microwave Backhaul
  • Power: Telecom DC/DC Modules:
    • Analog or Digital
  • Private Branch Exchanges (PBX)
  • TETRA Base Stations
  • Telecom Base Band Units
  • Telecom Shelters:
    • Filter Unit s
    • Power Distribution Units (PDU)
    • Power Monitoring Units (PMU)
    • Wireless Battery Monitoring
    • Remote Electrical Tilt Units (RET)
    • Remote Radio Units (RRU)
    • Tower Mounted Amplifiers (TMA)
  • Vector Signal Analyzers and Generators
  • Video Conferencing: IP-Based HD
  • WiMAX and Wireless Infrastructure Equipment
  • Wireless Communications Testers
  • xDSL Modems and DSLAM

Description

This quadruple bus buffer gate is designed for 1.65-V to 3.6-V VCC operation.

The SN74LVC125A device features independent line drivers with 3-state outputs. Each output is disabled when the associated output-enable (OE) input is high.

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.

Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of this device as a translator in a mixed 3.3-V/5-V system environment.

Device Information(1)

PART NUMBER PACKAGE (PIN) BODY SIZE
SN74LVC125A SOIC (14) 8.65 mm × 3.91 mm
SSOP (14) 6.20 mm × 5.30 mm
SOP (14) 10.30 mm × 5.30 mm
TSSOP (14) 5.00 mm × 4.40 mm
VQFN (14) 3.50 mm × 3.50 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

3 Simplified Schematic

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