Használati útmutató Texas Instruments SN74LV125APWR

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SN74LV125A Quadruple Bus Buffer Gates With 3-State Outputs

1 Features

• 2-V to 5.5-V VCC Operation

• Max tpd of 6 ns at 5 V

• Typical VOLP (Output Ground Bounce)

< 0.8 V at VCC = 3.3 V, TA = 25°C

• Typical VOHV (Output VOH Undershoot)

> 2.3 V at VCC = 3.3 V, TA = 25°C

• Support Mixed-Mode Voltage Operation on

All Ports

• Ioff Supports Partial-Power-Down Mode Operation

• Latch-Up Performance Exceeds 250 mA Per

JESD 17

• ESD Protection Exceeds JESD 22

– 4000-V Human-Body Model

– 200-V Machine Model

– 2000-V Charged-Device Model

2 Applications

• Flow Meters

• Solid State Drives (SSDs): Enterprise

• Power Over Ethernet (PoE)

• Programmable Logic Controllers

• Motor Drives and Controls

• Electronic Points of Sale

3 Description

The SN74LV125A quadruple bus buffer gate is

designed for 2-V to 5.5-V VCC operation.

Device Information

PART NUMBER(1) PACKAGE BODY SIZE (NOM)

SN74LV125A

DGV (TVSOP, 14) 3.60 mm x 4.40 mm

D (SOIC, 14) 8.65 mm × 3.90 mm

NS (SO, 14) 10.20 mm x 5.30 mm

DB (SSOP, 14) 6.20 mm x 5.30 mm

PW (TSSOP, 14) 5.00 mm x 4.40 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

2A 2Y

2OE

1A 1Y

1OE

4A 4Y

4OE

3A 3Y

3OE

Simplified Schematic

SN74LV125A

SCES124O – DECEMBER 1997 – REVISED MAY 2022

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

Table of Contents

1 Features............................................................................1

2 Applications..................................................................... 1

3 Description.......................................................................1

4 Revision History.............................................................. 2

5 Pin Configuration and Functions...................................3

Pin Functions.................................................................... 3

6 Specifications.................................................................. 4

6.1 Absolute Maximum Ratings........................................ 4

6.2 ESD Ratings............................................................... 4

6.3 Recommended Operating Conditions.........................5

6.4 Thermal Information....................................................5

6.5 Electrical Characteristics.............................................6

6.6 Switching Characteristics, VCC = 2.5 V ± 0.2 V...........6

6.7 Switching Characteristics, VCC = 3.3 V ± 0.3 V...........6

6.8 Switching Characteristics, VCC = 5 V ± 0.5 V..............7

6.9 Noise Characteristics..................................................7

6.10 Operating Characteristics......................................... 7

6.11 Typical Characteristics.............................................. 7

7 Parameter Measurement Information............................ 8

8 Detailed Description........................................................9

8.1 Overview.....................................................................9

8.2 Functional Block Diagram........................................... 9

8.3 Feature Description.....................................................9

8.4 Device Functional Modes............................................9

9 Application and Implementation.................................. 10

9.1 Application Information............................................. 10

9.2 Typical Application.................................................... 10

10 Power Supply Recommendations..............................11

11 Layout...........................................................................12

11.1 Layout Guidelines................................................... 12

11.2 Layout Example...................................................... 12

12 Device and Documentation Support..........................12

12.1 Related Links.......................................................... 12

12.2 Trademarks.............................................................12

12.3 Electrostatic Discharge Caution..............................12

12.4 Glossary..................................................................12

13 Mechanical, Packaging, and Orderable

Information.................................................................... 12

4 Revision History

Changes from Revision N (January 2015) to Revision O (May 2022) Page

• Updated the numbering, formatting, tables, figures, and cross-references throughout the document to reflect

modern data sheet standards.............................................................................................................................4

Changes from Revision M (December 2014) to Revision N (January 2015) Page

• Added Tj spec to table...........................................................................................Absolute Maximum Ratings 4

• Added text to section .........................................................................................................................Overview 9

Changes from Revision L (April 2005) to Revision M (December 2014) Page

• Added , table, table, table, Applications Device Information Pin Functions ESD Ratings Thermal Information

table, Typical Characteristics Feature Description Device Functional Modes Application and , section, ,

Implementation Power Supply Recommendations Layout Device and section, section, section,

Documentation Support Mechanical, Packaging, and Orderable Information section, and section................... 1

• Deleted table.....................................................................................................................Ordering Information 1