Decoders/Encoders/Multiplexers - Data Selectors/Multiplexers - SN74S257

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Datasheet

Quadruple 2-Line To 1-Line Data Selectors/Multiplexers (PDF 42615 KB)
01 Mar 1988

	SN54S257	SN74S257
Voltage Nodes(V)	5	5
Vcc range(V)	4.5 to 5.5	4.75 to 5.25
Input Level	TTL	TTL
Output Level	TTL	TTL
Output Drive(mA)		-6.5/20
Output	3S	3S
From	2	2
To	1	1
Technology Family	S	S
Rating	Military	Catalog
	Samples	Samples
	Inventory	Inventory

Other qualified versions of SN74S257

Version	Part Number	Definition
Military	SN54S257	QML certified for Military and Defense Applications

Product Information

Features

Three-State Outputs Interface Directly with System Bus
'LS257B and 'LS258B Offer Three Times the Sink-Current Capability of the Original 'LS257 and 'LS258
Same Pin Assignments as SN54LS157, SN74LS157, SN54S157, SN74S157, and SN54LS158, SN74LS158, SN54S158, SN74S158
Provides Bus Interface from Multiple Sources in High-Performance Systems

Off state (worst case)

Description

These devices are designed to multiplex signals from four-bit data sources to four-output data lines in bus-organized systems. The 3-state outputs will not load the data lines when the output control pin (G\) is at a high-logic level.

Series 54LS and 54S are characterized for operation over the full military temperature range of -55°C to 125°C; Series 74LS and 74S are 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
SN74S257DE4	ACTIVE	0 to 70		SOIC (D) \| 16	View		Purchase Samples
SN74S257DG4	ACTIVE	0 to 70		SOIC (D) \| 16	View		Purchase Samples
SN74S257N	ACTIVE	0 to 70	1.65 \| 1ku	PDIP (N) \| 16	View	25 \| TUBE	Purchase Samples
SN74S257N3	OBSOLETE	0 to 70		PDIP (N) \| 16	View		Not Available
SN74S257NE4	ACTIVE	0 to 70	1.65 \| 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 10:46 AM GMT, 08 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 14 WeeksSN74S257N
Americas	Rochester Electronics	>1k
Asia	Farnell Asia	200
Europe	EBV Elektronik	150
Europe	Farnell	200
TI Lead Time*: 14 WeeksSN74S257NE4
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
SN74S257N	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	View	View
SN74S257NE4	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 SN74S257

Datasheet

Quadruple 2-Line To 1-Line Data Selectors/Multiplexers (PDF, 42615 KB)
01 Mar 1988

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
Shelf-Life Evaluation of Lead-Free Component Finishes (HTM, 8 KB) 26969 views
24 May 2004 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

View Application Notes for Data Selectors/Multiplexers

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

Support and Community

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SN74S257 Status: ACTIVE

Quadruple 2-Line To 1-Line Data Selectors/Multiplexers With 3-State Outputs

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Datasheet

Other qualified versions of SN74S257

Product Information

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Description

Pricing / Packaging / CAD Design Tools / Samples

Inventory

Quality & Lead (Pb)-Free Data

Technical Documents

Datasheet

Application Notes

User Guides

Selection Guides

More Literature

Support and Community

Customer Tags

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