CD74HC123 Status: ACTIVE

High Speed CMOS Logic Dual Retriggerable Monostable Multivibrators with Reset

Harris

Alert me about changes<br/>to this product

Alert me about changes
to this product

Datasheet

CD54/74HC123, CD54/74HCT123, CD74HC423, CD74HCT423 (Rev. F) (PDF 653 KB)
13 Oct 2003

	CD54HC123	CD74HC123
Voltage Nodes(V)	6, 5, 2	2, 4.5, 6
Vcc range(V)		2 to 6
Input Level		CMOS
Output Level		CMOS
Rating	Military	Catalog
Technology Family	HC	HC
	Samples	Samples
	Inventory	Inventory

Other qualified versions of CD74HC123

Version	Part Number	Definition
Military	CD54HC123	QML certified for Military and Defense Applications

Customers Who Evaluated This Product Also Evaluated

OPA2277: High Precision Operational Amplifiers

MC34063A: 1.5-A Boost/Buck/Inverting Switching Regulator

TPA2005D1: 1.4-W Mono Class-D Audio Amplifier (TPA2005)

Product Information

Features

Overriding Reset Terminates Output Pulse
Triggering From the Leading or Trailing Edge
Q and Q\ Buffered Outputs
Separate Resets
Wide Range of Output-Pulse Widths
Schmitt Trigger on Both A\ and B Inputs
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

Description

The ’HC123, ’HCT123, CD74HC423 and CD74HCT423 are dual monostable multivibrators with resets. They are all retriggerable and differ only in that the 123 types can be triggered by a negative to positive reset pulse; whereas the 423 types do not have this feature. An external resistor (R_X) and an external capacitor (C_X) control the timing and the accuracy for the circuit. Adjustment of Rx and C_X provides a wide range of output pulse widths from the Q and Q\ terminals. Pulse triggering on the A\ and B inputs occur at a particular voltage level and is not related to the rise and fall times of the trigger pulses.

Once triggered, the output pulse width may be extended by retriggering inputs A\ and B. The output pulse can be terminated by a LOW level on the Reset (R) pin.

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
CD74HC123E	ACTIVE	-55 to 125	0.29 \| 1ku	PDIP (N) \| 16	View	25 \| TUBE	Contact TI Distributor or Sales Office
CD74HC123EE4	ACTIVE	-55 to 125	0.29 \| 1ku	PDIP (N) \| 16	View	25 \| TUBE	Contact TI Distributor or Sales Office
CD74HC123M	ACTIVE	-55 to 125	0.29 \| 1ku	SOIC (D) \| 16	View	40 \| TUBE	Purchase Samples
CD74HC123M96	ACTIVE	-55 to 125	0.26 \| 1ku	SOIC (D) \| 16	View	2500 \| LARGE T&R	Contact TI Distributor or Sales Office
CD74HC123M96E4	ACTIVE	-55 to 125	0.26 \| 1ku	SOIC (D) \| 16	View	2500 \| LARGE T&R	Contact TI Distributor or Sales Office
CD74HC123M96G4	ACTIVE	-55 to 125	0.26 \| 1ku	SOIC (D) \| 16	View	2500 \| LARGE T&R	Contact TI Distributor or Sales Office
CD74HC123ME4	ACTIVE	-55 to 125	0.29 \| 1ku	SOIC (D) \| 16	View	40 \| TUBE	Purchase Samples
CD74HC123MG4	ACTIVE	-55 to 125	0.29 \| 1ku	SOIC (D) \| 16	View	40 \| TUBE	Purchase Samples
CD74HC123MT	ACTIVE	-55 to 125	0.59 \| 1ku	SOIC (D) \| 16	View	250 \| SMALL T&R	Purchase Samples
CD74HC123MTE4	ACTIVE	-55 to 125	0.59 \| 1ku	SOIC (D) \| 16	View	250 \| SMALL T&R	Purchase Samples
CD74HC123MTG4	ACTIVE	-55 to 125	0.59 \| 1ku	SOIC (D) \| 16	View	250 \| SMALL T&R	Purchase Samples
CD74HC123NSR	ACTIVE	-55 to 125	0.26 \| 1ku	SO (NS) \| 16	View	2000 \| LARGE T&R	Purchase Samples
CD74HC123NSRE4	ACTIVE	-55 to 125	0.26 \| 1ku	SO (NS) \| 16	View	2000 \| LARGE T&R	Purchase Samples
CD74HC123NSRG4	ACTIVE	-55 to 125	0.26 \| 1ku	SO (NS) \| 16	View	2000 \| LARGE T&R	Purchase Samples
CD74HC123PW	ACTIVE	-55 to 125	0.29 \| 1ku	TSSOP (PW) \| 16	View	90 \| TUBE	Purchase Samples
CD74HC123PWE4	ACTIVE	-55 to 125	0.29 \| 1ku	TSSOP (PW) \| 16	View	90 \| TUBE	Purchase Samples
CD74HC123PWG4	ACTIVE	-55 to 125	0.29 \| 1ku	TSSOP (PW) \| 16	View	90 \| TUBE	Purchase Samples
CD74HC123PWR	ACTIVE	-55 to 125	0.26 \| 1ku	TSSOP (PW) \| 16	View	2000 \| LARGE T&R	Contact TI Distributor or Sales Office
CD74HC123PWRE4	ACTIVE	-55 to 125	0.26 \| 1ku	TSSOP (PW) \| 16	View	2000 \| LARGE T&R	Contact TI Distributor or Sales Office
CD74HC123PWRG4	ACTIVE	-55 to 125	0.26 \| 1ku	TSSOP (PW) \| 16	View	2000 \| LARGE T&R	Contact TI Distributor or Sales Office
CD74HC123PWT	ACTIVE	-55 to 125	0.59 \| 1ku	TSSOP (PW) \| 16	View	250 \| SMALL T&R	Purchase Samples
CD74HC123PWTE4	ACTIVE	-55 to 125	0.59 \| 1ku	TSSOP (PW) \| 16	View	250 \| SMALL T&R	Purchase Samples
CD74HC123PWTG4	ACTIVE	-55 to 125	0.59 \| 1ku	TSSOP (PW) \| 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 12:08 PM GMT, 25 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 20 WeeksCD74HC123E
Americas	Arrow	>1k
	Newark	>1k
	Rochester Electronics	>1k
Asia	Farnell Asia	257
Europe	Avnet-SILICA	250
Europe	Farnell	147
Worldwide	DigiKey	693
TI Lead Time*: 20 WeeksCD74HC123EE4
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksCD74HC123M
Americas	Arrow	>1k
	Avnet	>1k
	Newark	>1k
	Rochester Electronics	>1k
Asia	Farnell Asia	>1k
Asia	WPI	400
Europe	Abacus Polar	>1k
	Arrow Southern Europe	>1k
	Avnet-SILICA	>1k
	Compel	977
	EBV Elektronik	960
	Farnell	935
	Spoerle	>1k
Worldwide	DigiKey	Available
Worldwide	Mouser Electronics	>1k
TI Lead Time*: 20 WeeksCD74HC123M96
Americas	Arrow	>1k
	Avnet	>1k
	Rochester Electronics	>1k
Asia	WPI	>1k
Europe	Avnet-SILICA	>1k
	Compel	>1k
	EBV Elektronik	>1k
Worldwide	DigiKey	>1k
Worldwide	Mouser Electronics	364
TI Lead Time*: 20 WeeksCD74HC123M96E4
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksCD74HC123M96G4
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksCD74HC123ME4
Americas	Avnet	>1k
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksCD74HC123MG4
Americas	Rochester Electronics	>1k
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksCD74HC123MT
Worldwide	DigiKey	Available
Worldwide	Mouser Electronics	857
TI Lead Time*: 20 WeeksCD74HC123MTE4
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksCD74HC123MTG4
Worldwide	DigiKey	Available
TI Lead Time*: 15 WeeksCD74HC123NSR
None Reported View Distributors
TI Lead Time*: 15 WeeksCD74HC123NSRE4
None Reported View Distributors
TI Lead Time*: 15 WeeksCD74HC123NSRG4
None Reported View Distributors
TI Lead Time*: 20 WeeksCD74HC123PW
Americas	Avnet	>1k
Americas	Rochester Electronics	>1k
Asia	Farnell Asia	>1k
Europe	Avnet-SILICA	360
	Farnell	>1k
	Spoerle	810
Worldwide	DigiKey	Available
Worldwide	Mouser Electronics	>1k
TI Lead Time*: 20 WeeksCD74HC123PWE4
Europe	Arrow Northern Europe	630
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksCD74HC123PWG4
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksCD74HC123PWR
Americas	Arrow	>1k
Americas	Rochester Electronics	>1k
Asia	WPI	>1k
Worldwide	DigiKey	>1k
Worldwide	Mouser Electronics	241
TI Lead Time*: 20 WeeksCD74HC123PWRE4
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksCD74HC123PWRG4
Worldwide	DigiKey	Available
TI Lead Time*: 18 WeeksCD74HC123PWT
Worldwide	DigiKey	Available
TI Lead Time*: 18 WeeksCD74HC123PWTE4
Worldwide	DigiKey	Available
TI Lead Time*: 18 WeeksCD74HC123PWTG4
Worldwide	DigiKey	Available
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
CD74HC123E	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	View	View
CD74HC123EE4	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	View	View
CD74HC123M	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC123M96	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC123M96E4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC123M96G4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC123ME4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC123MG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC123MT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC123MTE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC123MTG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC123NSR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC123NSRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC123NSRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC123PW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC123PWE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC123PWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC123PWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC123PWRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC123PWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC123PWT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC123PWTE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
CD74HC123PWTG4	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 CD74HC123

Datasheet

CD54/74HC123, CD54/74HCT123, CD74HC423, CD74HCT423 (Rev. F) (PDF, 653 KB)
13 Oct 2003

Application Notes

Input and Output Characteristics of Digital Integrated Circuits (HTM, 9 KB) 9405 views
01 Oct 1996 Read Abstract
Live Insertion (HTM, 8 KB) 2444 views
01 Oct 1996 Read Abstract
Selecting the Right Texas Instruments Signal Switch (HTM, 8 KB) 6076 views
07 Sep 2001 Read Abstract
TI IBIS File Creation, Validation, and Distribution Processes (HTM, 9 KB) 3906 views
29 Aug 2002 Read Abstract
Shelf-Life Evaluation of Lead-Free Component Finishes (HTM, 8 KB) 27271 views
24 May 2004 Read Abstract
Designing With Logic (Rev. C) (HTM, 8 KB) 9164 views
01 Jun 1997 Read Abstract
SN54/74HCT CMOS Logic Family Applications and Restrictions (HTM, 8 KB) 3825 views
01 May 1996 Read Abstract
Using High Speed CMOS and Advanced CMOS in Systems With Multiple Vcc (HTM, 8 KB) 2081 views
01 Apr 1996 Read Abstract
Understanding and Interpreting Standard-Logic Data Sheets (Rev. B) (HTM, 8 KB) 21719 views
28 May 2003 Read Abstract
Implications of Slow or Floating CMOS Inputs (Rev. C) (HTM, 8 KB) 7120 views
01 Feb 1998 Read Abstract
CMOS Power Consumption and CPD Calculation (Rev. B) (HTM, 9 KB) 3173 views
01 Jun 1997 Read Abstract

View Application Notes for Monostable Multivibrators

User Guides

LOGIC Pocket Data Book (Rev. B) (PDF, 6001 KB) 47392 views
16 Jan 2007
Signal Switch Data Book (Rev. A) (PDF, 18396 KB) 9661 views
14 Nov 2003

Selection Guides

Logic Guide 2009 (Rev. Z) (PDF, 4263 KB) 90790 views
23 Jul 2009

More Literature

Logic Cross-Reference (Rev. A) (PDF, 2938 KB) 15434 views
07 Oct 2003
SN74HC4851/HC4852 Product Clip (Rev. B) (PDF, 501 KB) 2608 views
11 May 2004

Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Product Family	Comments
OPA2277	High Precision Operational Amplifiers	PRECISION AMPLIFIER-LOW OFFSET VOLTAGE	TI customers also evaluated this product.
MC34063A	1.5-A Boost/Buck/Inverting Switching Regulator	DC/DC CONVERTERS (INTEGRATED SWITCH)-INVERTING REGULATORS	TI customers also evaluated this product.
TPA2005D1	1.4-W Mono Class-D Audio Amplifier (TPA2005)	DIGITAL AMPLIFIER SOLUTIONS-ANALOG-INPUT CLASS-D SPEAKER AMPLIFIERS	TI customers also evaluated this product.
TPS2052B	Current-Limited, Power-Distribution Switches	PCMCIA AND USB-USB POWER SWITCHES	TI customers also evaluated this product.
TSC2007	Nano-Power Touch Screen Controller with I2C Serial Interface	TOUCH SCREEN CONTROLLER-TOUCH SCREEN CONTROLLER ONLY	TI customers also evaluated this product.
TPS5430	5.5V to 36V, 3A, 500kHz Step Down SWIFT™ Converter	DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS	TI customers also evaluated this product.
SN74LVC245A	Octal Bus Transceiver With 3-State Outputs	BUFFERS, DRIVERS AND TRANSCEIVERS-STANDARD TRANSCEIVERS	TI customers also evaluated this product.
TVP5150AM1	Ultralow Power NTSC/PAL/SECAM Video Decoder w/Robust Sync Detector	VIDEO AND IMAGING-VIDEO ENCODERS / DECODERS	TI customers also evaluated this product.
UCC27424	Dual 4A MOSFET Driver	AC/DC AND DC/DC POWER SUPPLIES-MOSFET DRIVERS	TI customers also evaluated this product.
TPS61085	18.5V, 2A, 650kHz, 1.2MHz Step-Up DC-DC Converter with Forced PWM Mode	DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-UP REGULATORS	TI customers also evaluated this product.

Support and Community

Customer Tags

No Tags are Available for this Part Number

CD74HC123 Status: ACTIVE

High Speed CMOS Logic Dual Retriggerable Monostable Multivibrators with Reset

Most Popular Links