CD74HC161 Status: ACTIVE

High Speed CMOS Logic 4-Bit Binary Counter with Asynchronous Reset

Harris

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Datasheet

CD54/74HC161, CD54/74HCT161, CD54/74HC163, CD54/74HCT163 (Rev. D) (PDF 573 KB)
13 Oct 2003

	CD54HC161	CD74HC161
Voltage Nodes(V)	6, 5, 2	6, 5, 2
Vcc range(V)		2.0 to 6.0
Input Level		CMOS
Output Level		CMOS
Clear		Async
Rating	Military	Catalog
Technology Family	HC	HC
	Samples	Samples
	Inventory	Inventory

Other qualified versions of CD74HC161

Version	Part Number	Definition
Military	CD54HC161	QML certified for Military and Defense Applications

Customers Who Evaluated This Product Also Evaluated

CD74HC193: High Speed CMOS Logic Presettable Synchronous 4-Bit Binary Up/Down Counter with Asynchronous Reset

Product Information

Features

’HC161, ’HCT161 4-Bit Binary Counter, Asynchronous Reset
’HC163, ’HCT163 4-Bit Binary Counter, Synchronous Reset
Synchronous Counting and Loading
Two Count Enable Inputs for n-Bit Cascading
Look-Ahead Carry for High-Speed Counting
Fanout (Over Temperature Range)
- Standard Outputs...10 LSTTL Loads
- Bus Driver Outputs...15 LSTTL Loads
Wide Operating Temperature Range . . . -55°C to 125°C
Balanced Propagation Delay and Transition Times
Significant Power Reduction Compared to LSTTL Logic ICs
HC Types
- 2V to 6V Operation
- High Noise Immunity: N_IL = 30%, N_IH = 30% of V_CC at V_CC = 5V
HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility, V_IL = 0.8V (Max), V_IH = 2V (Min)
- CMOS Input Compatibility, I_l 1µA at V_OL, V_OH

The CD54HCT161 is obsolete and no longer is supplied.
Data sheet acquired from Harris Semiconductor.

Description

The ’HC161, ’HCT161, ’HC163, and ’HCT163 are presettable synchronous counters that feature look-ahead carry logic for use in high-speed counting applications. The ’HC161 and ’HCT161 are asynchronous reset decade and binary counters, respectively; the ’HC163 and ’HCT163 devices are decade and binary counters, respectively, that are reset synchronously with the clock. Counting and parallel presetting are both accomplished synchronously with the negative-to-positive transition of the clock.

A low level on the synchronous parallel enable input, SPE, disables counting operation and allows data at the P0 to P3 inputs to be loaded into the counter (provided that the setup and hold requirements for SPE are met).

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
CD74HC161E	ACTIVE	-55 to 125	0.39 \| 1ku	PDIP (N) \| 16	View	25 \| TUBE	Purchase Samples
CD74HC161EE4	ACTIVE	-55 to 125	0.39 \| 1ku	PDIP (N) \| 16	View	25 \| TUBE	Purchase Samples
CD74HC161M	ACTIVE	-55 to 125	0.39 \| 1ku	SOIC (D) \| 16	View	40 \| TUBE	Purchase Samples
CD74HC161M96	ACTIVE	-55 to 125	0.35 \| 1ku	SOIC (D) \| 16	View	2500 \| LARGE T&R	Contact TI Distributor or Sales Office
CD74HC161M96E4	ACTIVE	-55 to 125	0.35 \| 1ku	SOIC (D) \| 16	View	2500 \| LARGE T&R	Contact TI Distributor or Sales Office
CD74HC161M96G4	ACTIVE	-55 to 125	0.35 \| 1ku	SOIC (D) \| 16	View	2500 \| LARGE T&R	Contact TI Distributor or Sales Office
CD74HC161ME4	ACTIVE	-55 to 125	0.39 \| 1ku	SOIC (D) \| 16	View	40 \| TUBE	Purchase Samples
CD74HC161MG4	ACTIVE	-55 to 125	0.39 \| 1ku	SOIC (D) \| 16	View	40 \| TUBE	Purchase Samples
CD74HC161MT	ACTIVE	-55 to 125	0.70 \| 1ku	SOIC (D) \| 16	View	250 \| SMALL T&R	Purchase Samples
CD74HC161MTE4	ACTIVE	-55 to 125	0.70 \| 1ku	SOIC (D) \| 16	View	250 \| SMALL T&R	Purchase Samples
CD74HC161MTG4	ACTIVE	-55 to 125	0.70 \| 1ku	SOIC (D) \| 16	View	250 \| SMALL T&R	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 11:36 AM GMT, 09 Feb 2010
Region	Company	In Stock	Purchase
TI Lead Time*: 20 WeeksCD74HC161E
Americas	Avnet	>1k
	Rochester Electronics	>1k
Europe	Arrow Southern Europe	375
Worldwide	Mouser Electronics	>1k
TI Lead Time*: 20 WeeksCD74HC161EE4
None Reported View Distributors
TI Lead Time*: 20 WeeksCD74HC161M
Americas	Avnet	>1k
	Rochester Electronics	80
Europe	Arrow Southern Europe	22
	Avnet-SILICA	280
TI Lead Time*: 20 WeeksCD74HC161M96
Americas	Arrow	>1k
	Rochester Electronics	>1k
TI Lead Time*: 20 WeeksCD74HC161M96E4
Americas	Rochester Electronics	>1k
TI Lead Time*: 20 WeeksCD74HC161M96G4
None Reported View Distributors
TI Lead Time*: 20 WeeksCD74HC161ME4
None Reported View Distributors
TI Lead Time*: 20 WeeksCD74HC161MG4
None Reported View Distributors
TI Lead Time*: 18 WeeksCD74HC161MT
None Reported View Distributors
TI Lead Time*: 18 WeeksCD74HC161MTE4
None Reported View Distributors
TI Lead Time*: 18 WeeksCD74HC161MTG4
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
CD74HC161E	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	View	View
CD74HC161EE4	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	View	View
CD74HC161M	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC161M96	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC161M96E4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC161M96G4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC161ME4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC161MG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC161MT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC161MTE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC161MTG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-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 CD74HC161

Datasheet

CD54/74HC161, CD54/74HCT161, CD54/74HC163, CD54/74HCT163 (Rev. D) (PDF, 573 KB)
13 Oct 2003

Application Notes

Input and Output Characteristics of Digital Integrated Circuits (HTM, 9 KB) 10335 views
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01 Jun 1997 Read Abstract
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01 May 1996 Read Abstract
Using High Speed CMOS and Advanced CMOS in Systems With Multiple Vcc (HTM, 8 KB) 2180 views
01 Apr 1996 Read Abstract
Understanding and Interpreting Standard-Logic Data Sheets (Rev. B) (HTM, 8 KB) 23173 views
28 May 2003 Read Abstract
Implications of Slow or Floating CMOS Inputs (Rev. C) (HTM, 8 KB) 7469 views
01 Feb 1998 Read Abstract
CMOS Power Consumption and CPD Calculation (Rev. B) (HTM, 9 KB) 3339 views
01 Jun 1997 Read Abstract

View Application Notes for Binary Counter

User Guides

LOGIC Pocket Data Book (Rev. B) (PDF, 6001 KB) 49573 views
16 Jan 2007
Signal Switch Data Book (Rev. A) (PDF, 18396 KB) 10232 views
14 Nov 2003

Selection Guides

Logic Guide 2009 (Rev. Z) (PDF, 4263 KB) 98861 views
23 Jul 2009

More Literature

Logic Cross-Reference (Rev. A) (PDF, 2938 KB) 16371 views
07 Oct 2003
SN74HC4851/HC4852 Product Clip (Rev. B) (PDF, 501 KB) 2735 views
11 May 2004

Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Product Family	Comments
CD74HC193	High Speed CMOS Logic Presettable Synchronous 4-Bit Binary Up/Down Counter with Asynchronous Reset	COUNTER-BINARY COUNTER	TI customers also evaluated this product.

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CD74HC161 Status: ACTIVE

High Speed CMOS Logic 4-Bit Binary Counter with Asynchronous Reset

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