Decoders/Encoders/Multiplexers - Data Selectors/Multiplexers - SN74LVC257A-Q1

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Datasheet

Quadruple 2-Line to 1-Line Data Selector/Multiplexer With 3-State Outputs (Rev. B) (PDF 200 KB)
12 Feb 2008

	SN74LVC257A-Q1
Voltage Nodes(V)	2.7, 3.3
Vcc range(V)	2.0 to 3.6
Input Level	TTL/CMOS
Output Level	LVTTL
Output Drive(mA)	-24/24
Output	3S
From	2
To	1
ICC(uA)	10
Technology Family	LVC
tpd max(ns)	4.6
Rating	Automotive
	Samples
	Inventory

Other qualified versions of SN74LVC257A-Q1

Version	Part Number	Definition
Catalog	SN74LVC257A	TI's standard catalog product
Enhanced Product	SN74LVC257A-EP	Supports Defense, Aerospace and Medical Applications
Military	SN54LVC257A	QML certified for Military and Defense Applications

Product Information

Features

Qualified for Automotive Applications
ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)
Operates From 2 V to 3.6 V
Inputs Accept Voltages to 5.5 V
Max t_pd of 4.6 ns at 3.3 V
Typical V_OLP (Output Ground Bounce)
<0.8 V at V_CC = 3.3 V, T_A = 25°C
Typical V_OHV (Output V_OH Undershoot)
>2 V at V_CC = 3.3 V, T_A = 25°C

Description

The SN74LVC257A quadruple 2-line to 1-line data selector/multiplexer is designed for 2.7-V to 3.6-V V_CC operation.

The device is designed for high-performance memory-decoding or data-routing applications requiring very short propagation delay times. In high-performance memory systems, this decoder minimizes the effects of system decoding. When employed with high-speed memories utilizing a fast enable circuit, delay times of this decoder and the enable time of the memory usually are less than the typical access time of the memory. This means that the effective system delay introduced by the decoder is negligible.

The conditions at the binary-select inputs and the three enable inputs select one of eight output lines.

View All Description in Datasheet

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
CLVC257AQPWRG4Q1	ACTIVE	-40 to 125	0.36 \| 1ku	TSSOP (PW) \| 16	View	2000		Purchase Samples
SN74LVC257AQDRG4Q1	ACTIVE	-40 to 125	0.39 \| 1ku	SOIC (D) \| 16	View	2500		Purchase Samples
SN74LVC257AQDRQ1	ACTIVE	-40 to 125	0.39 \| 1ku	SOIC (D) \| 16	View	2500	Purchase Samples
SN74LVC257AQPWRQ1	ACTIVE	-40 to 125	0.36 \| 1ku	TSSOP (PW) \| 16	View	2000	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 10:54 AM GMT, 22 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 20 WeeksCLVC257AQPWRG4Q1
None Reported View Distributors
TI Lead Time*: 20 WeeksSN74LVC257AQDRG4Q1
None Reported View Distributors
TI Lead Time*: 20 WeeksSN74LVC257AQDRQ1
Americas	Rochester Electronics	>1k
TI Lead Time*: 20 WeeksSN74LVC257AQPWRQ1
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
CLVC257AQPWRG4Q1	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC257AQDRG4Q1	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74LVC257AQDRQ1	Pb-Free (RoHS)	CU NIPDAU	Level-2-250C-1 YEAR/Level-1-235C-UNLIM	View	View
SN74LVC257AQPWRQ1	Pb-Free (RoHS)	CU NIPDAU	Level-1-250C-UNLIM	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.

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