Decoders/Encoders/Multiplexers - Decoders/Demultiplexers - SN74HC138-Q1

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Datasheet

3-Line to 8-Line Decoder/Demultiplexer (Rev. A) (PDF 320 KB)
17 Sep 2008

	SN74HC138-Q1
Voltage Nodes(V)	6, 5, 2
Vcc range(V)	2.0 to 6.0
Input Level	CMOS
Output Level	CMOS
Output	2S
From	3
To	8
Rating	Automotive
Technology Family	HC
	Samples
	Inventory

Other qualified versions of SN74HC138-Q1

Version	Part Number	Definition
Catalog	SN74HC138	TI's standard catalog product
Military	SN54HC138	QML certified for Military and Defense Applications

Customers Who Evaluated This Product Also Evaluated

CD74HC238: High Speed CMOS Logic 3-to-8 Line Decoder Demultiplexer Inverting and Non-Inverting
SN74AHC138: 3-Line To 8-Line Decoder / Demultiplexer
CD74HC154: High Speed CMOS Logic 4-to-16 Line Decoder/Demultiplexer
SN74AVC2T45: Dual-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation and 3-State Outputs

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)
Targeted Specifically for High-Speed Memory Decoders and Data-Transmission Systems
2-V to 6-V V_CC Operation
Outputs Can Drive Up To 10 LSTTL Loads
Low Power Consumption, 80-µA Max I_CC
Typical t_pd = 15 ns
±4-mA Output Drive at 5 V
Low Input Current of 1 µA Max
Incorporate Three Enable Inputs to Simplify Cascading and/or Data Reception

Description

The SN74HC138 is designed to be used in high-performance memory-decoding or data-routing applications requiring very short propagation delay times. In high-performance memory systems, this decoder can be used to minimize the effects of system decoding. When employed with high-speed memories utilizing a fast enable circuit, the 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 decoders is negligible.

The conditions at the binary-select inputs at the three enable inputs select one of eight output lines. Two active-low and one active-high enable inputs reduce the need for external gates or inverters when expanding.

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
SN74HC138QDRG4Q1	ACTIVE	-40 to 125	0.28 \| 1ku	SOIC (D) \| 16	View	2500
SN74HC138QDRQ1	ACTIVE	-40 to 125	0.28 \| 1ku	SOIC (D) \| 16	View	2500	Purchase Samples
SN74HC138QPWRG4Q1	ACTIVE	-40 to 125	0.28 \| 1ku	TSSOP (PW) \| 16	View	2000		Purchase Samples
SN74HC138QPWRQ1	ACTIVE	-40 to 125	0.28 \| 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 11:01 AM GMT, 22 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 20 WeeksSN74HC138QDRG4Q1
Worldwide	DigiKey	>1k
TI Lead Time*: 20 WeeksSN74HC138QDRQ1
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksSN74HC138QPWRG4Q1
None Reported View Distributors
TI Lead Time*: 20 WeeksSN74HC138QPWRQ1
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
SN74HC138QDRG4Q1	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74HC138QDRQ1	Pb-Free (RoHS)	CU NIPDAU	Level-2-250C-1 YEAR/Level-1-235C-UNLIM	View	View
SN74HC138QPWRG4Q1	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
SN74HC138QPWRQ1	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.

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 SN74HC138-Q1

Datasheet

3-Line to 8-Line Decoder/Demultiplexer (Rev. A) (PDF, 320 KB)
17 Sep 2008

Application Notes

Input and Output Characteristics of Digital Integrated Circuits (HTM, 9 KB) 9367 views
01 Oct 1996 Read Abstract
Live Insertion (HTM, 8 KB) 2440 views
01 Oct 1996 Read Abstract
Selecting the Right Texas Instruments Signal Switch (HTM, 8 KB) 6067 views
07 Sep 2001 Read Abstract
TI IBIS File Creation, Validation, and Distribution Processes (HTM, 9 KB) 3902 views
29 Aug 2002 Read Abstract
Shelf-Life Evaluation of Lead-Free Component Finishes (HTM, 8 KB) 27231 views
24 May 2004 Read Abstract
Designing With Logic (Rev. C) (HTM, 8 KB) 9152 views
01 Jun 1997 Read Abstract
SN54/74HCT CMOS Logic Family Applications and Restrictions (HTM, 8 KB) 3809 views
01 May 1996 Read Abstract
Using High Speed CMOS and Advanced CMOS in Systems With Multiple Vcc (HTM, 8 KB) 2078 views
01 Apr 1996 Read Abstract
Understanding and Interpreting Standard-Logic Data Sheets (Rev. B) (HTM, 8 KB) 21673 views
28 May 2003 Read Abstract
Implications of Slow or Floating CMOS Inputs (Rev. C) (HTM, 8 KB) 7099 views
01 Feb 1998 Read Abstract
CMOS Power Consumption and CPD Calculation (Rev. B) (HTM, 9 KB) 3169 views
01 Jun 1997 Read Abstract

View Application Notes for Decoders/Demultiplexers

User Guides

LOGIC Pocket Data Book (Rev. B) (PDF, 6001 KB) 47290 views
16 Jan 2007
Signal Switch Data Book (Rev. A) (PDF, 18396 KB) 9634 views
14 Nov 2003

Selection Guides

Logic Guide 2009 (Rev. Z) (PDF, 4263 KB) 90505 views
23 Jul 2009

More Literature

Logic Cross-Reference (Rev. A) (PDF, 2938 KB) 15408 views
07 Oct 2003
SN74HC4851/HC4852 Product Clip (Rev. B) (PDF, 501 KB) 2603 views
11 May 2004

Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Product Family	Comments
CD74HC238	High Speed CMOS Logic 3-to-8 Line Decoder Demultiplexer Inverting and Non-Inverting	DECODERS/ENCODERS/MULTIPLEXERS-DECODERS/DEMULTIPLEXERS	TI customers also evaluated this product.
SN74AHC138	3-Line To 8-Line Decoder / Demultiplexer	DECODERS/ENCODERS/MULTIPLEXERS-DECODERS/DEMULTIPLEXERS	TI customers also evaluated this product.
CD74HC154	High Speed CMOS Logic 4-to-16 Line Decoder/Demultiplexer	DECODERS/ENCODERS/MULTIPLEXERS-DECODERS/DEMULTIPLEXERS	TI customers also evaluated this product.
SN74AVC2T45	Dual-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation and 3-State Outputs	VOLTAGE LEVEL TRANSLATION-DUAL SUPPLY TRANSLATORS	TI customers also evaluated this product.

SN74HC138-Q1 Status: ACTIVE

Automotive Catalog 3-Line To 8-Line Decoders/Demultiplexers

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Datasheet

Other qualified versions of SN74HC138-Q1

Customers Who Evaluated This Product Also Evaluated

Product Information

Features

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

Other Support

SN74HC138-Q1 Status: ACTIVE

Automotive Catalog 3-Line To 8-Line Decoders/Demultiplexers

Most Popular Links

Datasheet

Other qualified versions of SN74HC138-Q1

Customers Who Evaluated This Product Also Evaluated

Product Information

Features

Description

Pricing / Packaging / CAD Design Tools / Samples

Inventory

Quality & Lead (Pb)-Free Data

Technical Documents

Datasheet

Application Notes

User Guides

Selection Guides

More Literature

Related Products

Support and Community

Customer Tags

Other Support