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SNx4HC259 8-Bit Addressable Latches

1 Features

• Wide operating voltage range of 2 V to 6 V

• High-current inverting outputs drive up to 10

LSTTL loads

• Low power consumption, 80-μA max ICC

• Typical tpd = 14 ns

• ±4-mA output drive at 5 V

• Low input current of 1 μA max

• 8-bit parallel-out storage register performs serial-

to-parallel conversion with storage

• Asynchronous parallel clear

• Active-high decoder

• Enable input simplifies expansion

• Expandable for n-bit applications

• Four distinct functional modes

2 Description

These 8-bit addressable latches are designed

for general-purpose storage applications in digital

systems. Specific uses include working registers,

serial-holding registers, and active-high decoders

or demultiplexers. They are multifunctional devices

capable of storing single-line data in eight

addressable latches and being a 1-of-8 decoder or

demultiplexer with active-high outputs.

Device Information

PART NUMBER PACKAGE(1) BODY SIZE (NOM)

SN74HC259D SOIC (16) 9.90 mm × 3.90 mm

SN74HC259N PDIP (16) 19.31 mm × 6.35 mm

SN74HC259NS SO (16) 6.20 mm × 5.30 mm

SN74HC259PW TSSOP (16) 5.00 mm × 4.40 mm

SN54HC259J CDIP (16) 24.38 mm × 6.92 mm

SNJ54HC259FK LCCC (20) 8.89 mm × 8.45 mm

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

the end of the document.

Pin numbers are for the D, J, N, NS, PW, and W packages.

Functional Block Diagram

SN54HC259, SN74HC259

SCLS134F – DECEMBER 1982 – REVISED MARCH 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 Description.......................................................................1

3 Revision History.............................................................. 2

4 Pin Configuration and Functions...................................3

5 Specifications.................................................................. 4

5.1 Absolute Maximum Ratings........................................ 4

5.2 Recommended Operating Conditions(1) .................... 4

5.3 Thermal Information....................................................4

5.4 Electrical Characteristics.............................................5

5.5 Timing Requirements .................................................5

5.6 Switching Characteristics ...........................................6

5.7 Operating Characteristics........................................... 6

6 Parameter Measurement Information............................7

7 Detailed Description........................................................8

7.1 Overview.....................................................................8

7.2 Functional Block Diagram...........................................8

7.3 Device Functional Modes............................................9

8 Power Supply Recommendations................................10

9 Layout.............................................................................10

9.1 Layout Guidelines..................................................... 10

10 Device and Documentation Support..........................11

10.1 Receiving Notification of Documentation Updates.. 11

10.2 Support Resources................................................. 11

10.3 Trademarks............................................................. 11

10.4 Electrostatic Discharge Caution.............................. 11

10.5 Glossary.................................................................. 11

11 Mechanical, Packaging, and Orderable

Information.................................................................... 11

3 Revision History

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

Changes from Revision E (September 2003) to Revision F (March 2022) Page

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

modern data sheet standards............................................................................................................................. 1

SN54HC259, SN74HC259

SCLS134F – DECEMBER 1982 – REVISED MARCH 2022 www.ti.com