SN74ALS259 Status: ACTIVE

Octal Addressable Latches

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Datasheet

8-Bit Addressable Latches (Rev. A) (PDF 738 KB)
01 Dec 1994

	SN54ALS259	SN74ALS259
Voltage Nodes(V)	5	5
Vcc range(V)	4.5 to 5.5	4.5 to 5.5
Input Level	TTL	TTL
Output Level	TTL	TTL
Output Drive(mA)		-0.4/8
Output	2S	2S
No. of Bits	8	8
th(ns)	0	0
tpd max(ns)		19
tsu(ns)		15
Rating	Military	Catalog
Technology Family	ALS	ALS
	Samples	Samples
	Inventory	Inventory

Other qualified versions of SN74ALS259

Version	Part Number	Definition
Military	SN54ALS259	QML certified for Military and Defense Applications

Customers Who Evaluated This Product Also Evaluated

SN74HC259: 8-Bit Addressable Latches

Product Information

Features

8-Bit Parallel-Out Storage Register Performs Serial-to-Parallel Conversion With Storage
Asynchronous Parallel Clear
Active-High Decoder
Enable/Disable Input Simplifies Expansion
Expandable for n-Bit Applications
Four Distinct Functional Modes
Package Options Include Plastic Small-Outline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs

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.

Four distinct modes of operation are selectable by controlling the clear () and enable (G\) inputs as shown in the function table. In the addressable-latch mode, data at the data-in terminal is written into the addressed latch. The

addressed latch follows the data input with all unaddressed latches remaining in their previous states. In the memory mode, all latches remain in their previous states and are unaffected by the data or address inputs. To eliminate the possibility of entering erroneous data in the latches, G\ should be held high (inactive) while the address lines are changing. In the 1-of-8 decoding or demultiplexing mode, the addressed output follows the level of the D input with all other outputs low. In the clear mode, all outputs are low and unaffected by the address and data inputs.

The SN54ALS259 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS259 is characterized for operation from 0°C to 70°C.

Pricing / Packaging / CAD Design Tools / Samples

			Price	Packaging			CAD Design Tools	Samples
Device	Status	Temp (^oC)	Price \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Footprints	Samples
SN74ALS259D	ACTIVE	0 to 70	2.44 \| 1ku	SOIC (D) \| 16	View	40 \| TUBE	Purchase Samples
SN74ALS259DE4	ACTIVE	0 to 70	2.44 \| 1ku	SOIC (D) \| 16	View	40 \| TUBE	Purchase Samples
SN74ALS259DG4	ACTIVE	0 to 70	2.44 \| 1ku	SOIC (D) \| 16	View	40 \| TUBE	Purchase Samples
SN74ALS259DR	ACTIVE	0 to 70	2.22 \| 1ku	SOIC (D) \| 16	View	2500 \| LARGE T&R	Purchase Samples
SN74ALS259DRE4	ACTIVE	0 to 70	2.22 \| 1ku	SOIC (D) \| 16	View	2500 \| LARGE T&R	Purchase Samples
SN74ALS259DRG4	ACTIVE	0 to 70	2.22 \| 1ku	SOIC (D) \| 16	View	2500 \| LARGE T&R	Purchase Samples
SN74ALS259N	ACTIVE	0 to 70	2.22 \| 1ku	PDIP (N) \| 16	View	25 \| TUBE	Purchase Samples
SN74ALS259NE4	ACTIVE	0 to 70	2.22 \| 1ku	PDIP (N) \| 16	View	25 \| TUBE	Purchase Samples

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

Reported Distributor Inventory as of 11:05 AM GMT, 08 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 15 WeeksSN74ALS259D
Americas	Rochester Electronics	>1k
Worldwide	DigiKey	Available
Worldwide	Mouser Electronics	4
TI Lead Time*: 15 WeeksSN74ALS259DE4
Worldwide	DigiKey	Available
TI Lead Time*: 15 WeeksSN74ALS259DG4
Worldwide	DigiKey	Available
TI Lead Time*: 11 WeeksSN74ALS259DR
Americas	Rochester Electronics	>1k
Worldwide	DigiKey	>1k
TI Lead Time*: 11 WeeksSN74ALS259DRE4
Worldwide	DigiKey	Available
TI Lead Time*: 11 WeeksSN74ALS259DRG4
Worldwide	DigiKey	Available
TI Lead Time*: 14 WeeksSN74ALS259N
Americas	Arrow	130
Americas	Rochester Electronics	>1k
Asia	Farnell Asia	200
Europe	Avnet-SILICA	50
Europe	Farnell	200
Worldwide	Mouser Electronics	215
TI Lead Time*: 14 WeeksSN74ALS259NE4
None Reported View Distributors
View all Distributors

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

	Product Content				DPPM / MTBF / FIT Rate
Device	Eco Plan*	Lead / Ball Finish	MSL Rating / Peak Reflow	Details	Details
SN74ALS259D	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74ALS259DE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74ALS259DG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74ALS259DR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74ALS259DRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74ALS259DRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74ALS259N	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	View	View
SN74ALS259NE4	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	View	View

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Most useful technical documents for SN74ALS259

Datasheet

8-Bit Addressable Latches (Rev. A) (PDF, 738 KB)
01 Dec 1994

Application Notes

Input and Output Characteristics of Digital Integrated Circuits (HTM, 9 KB) 9160 views
01 Oct 1996 Read Abstract
Live Insertion (HTM, 8 KB) 2410 views
01 Oct 1996 Read Abstract
TI IBIS File Creation, Validation, and Distribution Processes (HTM, 9 KB) 3849 views
29 Aug 2002 Read Abstract
Shelf-Life Evaluation of Lead-Free Component Finishes (HTM, 8 KB) 26969 views
24 May 2004 Read Abstract
Advanced Schottky (ALS and AS) Logic Families (HTM, 8 KB) 1223 views
01 Aug 1995 Read Abstract
Designing With Logic (Rev. C) (HTM, 8 KB) 9068 views
01 Jun 1997 Read Abstract
Understanding and Interpreting Standard-Logic Data Sheets (Rev. B) (HTM, 8 KB) 21380 views
28 May 2003 Read Abstract
Bus-Interface Devices With Output-Damping Resistors Or Reduced-Drive Outputs (Rev. A) (HTM, 8 KB) 2402 views
01 Aug 1997 Read Abstract

View Application Notes for Other Latches

User Guides

LOGIC Pocket Data Book (Rev. B) (PDF, 6001 KB) 46833 views
16 Jan 2007

Selection Guides

Logic Guide 2009 (Rev. Z) (PDF, 4263 KB) 88618 views
23 Jul 2009

More Literature

Logic Cross-Reference (Rev. A) (PDF, 2938 KB) 15250 views
07 Oct 2003

Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Product Family	Comments
SN74HC259	8-Bit Addressable Latches	FLIP-FLOPS, LATCHES AND REGISTERS-OTHER LATCHES	TI customers also evaluated this product.

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SN74ALS259 Status: ACTIVE

Octal Addressable Latches

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