Texas Instruments SN74HC125DR Manual

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Side 1/33

SNx4HC125 Quadruple Buffers with 3-State Outputs

1 Features

• Buffered inputs

• Wide operating voltage range: 2 V to 6 V

• Wide operating temperature range:

–40°C to +85°C

• Supports fanout up to 10 LSTTL loads

• Significant power reduction compared to LSTTL

logic ICs

2 Applications

•Enable digital signals

3 Description

This device contains four independent buffers with

3-state outputs. Each gate performs the Boolean

function Y = A in positive logic.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)

SN74HC125D SOIC (14) 8.70 mm × 3.90 mm

SN74HC125DB SSOP (14) 6.50 mm × 5.30 mm

SN74HC125N PDIP (14) 19.30 mm × 6.40 mm

SN74HC125NS SO (14) 10.20 mm × 5.30 mm

SN74HC125PW TSSOP (14) 5.00 mm × 4.40 mm

SN54HC125J CDIP (14) 21.30 mm × 7.60 mm

SN54HC125FK LCCC (20) 8.90 mm × 8.90 mm

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

the end of the data sheet.

1OE

2OE

GND

VCC

4OE

3OE

Functional pinout

SN74HC125, SN54HC125

SCLS104F – AUGUST 1984 – REVISED APRIL 2021

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.........................4

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

6.5 Electrical Characteristics - 74..................................... 5

6.6 Electrical Characteristics - 54..................................... 6

6.7 Switching Characteristics - 74.....................................6

6.8 Switching Characteristics - 54.....................................7

6.9 Operating Characteristics........................................... 7

6.10 Typical Characteristics.............................................. 7

7 Parameter Measurement Information............................ 9

8 Detailed Description......................................................10

8.1 Overview...................................................................10

8.2 Functional Block Diagram......................................... 10

8.3 Feature Description...................................................10

8.4 Device Functional Modes..........................................11

9 Application and Implementation.................................. 12

9.1 Application Information............................................. 12

9.2 Typical Application.................................................... 12

10 Power Supply Recommendations..............................14

11 Layout........................................................................... 14

11.1 Layout Guidelines................................................... 14

11.2 Layout Example...................................................... 14

12 Device and Documentation Support..........................15

12.1 Documentation Support.......................................... 15

12.2 Related Links.......................................................... 15

12.3 Support Resources................................................. 15

12.4 Trademarks............................................................. 15

12.5 Electrostatic Discharge Caution..............................15

12.6 Glossary..................................................................15

13 Mechanical, Packaging, and Orderable

Information.................................................................... 15

4 Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Changes from Revision E (December 2015) to Revision F (April 2021) Page

• Updated the numbering format for tables, figures, and cross-references throughout the document..................1

• Updated to new data sheet standards................................................................................................................1

• Increased D (86 to 133.6), DB (96 to 108.0), NS (76 to 122.6), and PW (113 to 151.7); decreased N (80 to

63.0) °C/W.......................................................................................................................................................... 5

SN74HC125, SN54HC125

SCLS104F – AUGUST 1984 – REVISED APRIL 2021 www.ti.com