74HC244; 74HCT244

General description

The 74HC244; 74HCT244 is a high-speed Si-gate CMOS device and is pin compatible with Low-power Schottky TTL (LSTTL).

The 74HC244; 74HCT244 has octal non-inverting buffer/line drivers with 3-state outputs. The 3-state outputs are controlled by the output enable inputs 1OE and 2OE. A HIGH on nOE causes the outputs to assume a high-impedance OFF-state. The 74HC244; 74HCT244 is identical to the 74HC240; 74HCT240 but has non-inverting outputs.

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Features

Octal bus interface
Non-inverting 3-state outputs
Complies with JEDEC standard no. 7A
ESD protection:

HBM EIA/JESD22-A114-C exceeds 2000 V
MM EIA/JESD22-A115-A exceeds 200 V

Multiple package options
Specified from -40 Cel to +85 Cel and from -40 Cel to +125 Cel

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Products/packages

Type number	Orderable part number	Ordering code (12NC)	Product status	Package	Packing	Marking
74HC244BQ	74HC244BQ,115	9352 736 78115	Volume production	SOT764-1 (DHVQFN20)	Reel Pack, SMD, 7"	Standard Marking
74HC244D	74HC244D,652	9337 134 20652	Volume production	SOT163	Bulk Pack, CECC	Standard Marking
74HC244D	74HC244D,653	9337 134 20653	Volume production	SOT163	Reel Pack, SMD, 13", CECC	Standard Marking
74HC244DB	74HC244DB,112	9351 668 90112	Volume production	SOT339	Tube	Standard Marking
74HC244DB	74HC244DB,118	9351 668 90118	Volume production	SOT339	Reel Pack, SMD, 13"	Standard Marking
74HC244N	74HC244N,652	9336 705 40652	Volume production	SOT146-1 (DIP20)	Bulk Pack, CECC	Standard Marking
74HC244PW	74HC244PW,112	9351 746 40112	Volume production	SOT360	Tube	Standard Marking
74HC244PW	74HC244PW,118	9351 746 40118	Volume production	SOT360	Reel Pack, SMD, 13"	Standard Marking
74HCT244BQ	74HCT244BQ,115	9352 737 29115	Volume production	SOT764-1 (DHVQFN20)	Reel Pack, SMD, 7"	Standard Marking
74HCT244D	74HCT244D,652	9337 134 30652	Volume production	SOT163	Bulk Pack, CECC	Standard Marking
74HCT244D	74HCT244D,653	9337 134 30653	Volume production	SOT163	Reel Pack, SMD, 13", CECC	Standard Marking
74HCT244DB	74HCT244DB,112	9351 668 80112	Volume production	SOT339	Tube	Standard Marking
74HCT244DB	74HCT244DB,118	9351 668 80118	Volume production	SOT339	Reel Pack, SMD, 13"	Standard Marking
74HCT244N	74HCT244N,652	9336 707 90652	Volume production	SOT146-1 (DIP20)	Bulk Pack, CECC	Standard Marking
74HCT244PW	74HCT244PW,112	9351 652 20112	Volume production	SOT360	Tube	Standard Marking
74HCT244PW	74HCT244PW,118	9351 652 20118	Volume production	SOT360	Reel Pack, SMD, 13"	Standard Marking
74HCT244PW/C	74HCT244PW/C,118	9352 883 99118	Volume production	SOT360	Reel Pack, SMD, 13"	Standard Marking

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Quality/reliability/chemical content

Type number	Orderable part number	Chemical content	Leadfree Conversion date	IRF (FIT)	MTBF (hours)	MSL
74HC244BQ	74HC244BQ,115	74HC244BQ	Always Pb-free	6,62	1,51E+08	1
74HC244D	74HC244D,652	74HC244D	week 13, 2005	6,62	1,51E+08	1
74HC244D	74HC244D,653	74HC244D	week 13, 2005	6,62	1,51E+08	1
74HC244DB	74HC244DB,112	74HC244DB	week 17, 2005	6,62	1,51E+08	1
74HC244DB	74HC244DB,118	74HC244DB	week 17, 2005	6,62	1,51E+08	1
74HC244N	74HC244N,652	74HC244N	Always Pb-free	6,62	1,51E+08	NA
74HC244PW	74HC244PW,112	74HC244PW	week 7, 2005	6,62	1,51E+08	1
74HC244PW	74HC244PW,118	74HC244PW	week 7, 2005	6,62	1,51E+08	1
74HCT244BQ	74HCT244BQ,115	74HCT244BQ	Always Pb-free	6,62	1,51E+08	1
74HCT244D	74HCT244D,652	74HCT244D	week 30, 2004	6,62	1,51E+08	1
74HCT244D	74HCT244D,653	74HCT244D	week 30, 2004	6,62	1,51E+08	1
74HCT244DB	74HCT244DB,112	74HCT244DB	week 17, 2005	6,62	1,51E+08	1
74HCT244DB	74HCT244DB,118	74HCT244DB	week 17, 2005	6,62	1,51E+08	1
74HCT244N	74HCT244N,652	74HCT244N	Always Pb-free	6,62	1,51E+08	NA
74HCT244PW	74HCT244PW,112	74HCT244PW	week 17, 2005	6,62	1,51E+08	1
74HCT244PW	74HCT244PW,118	74HCT244PW	week 17, 2005	6,62	1,51E+08	1
74HCT244PW/C	74HCT244PW/C,118	74HCT244PW_C	Always Pb-free	6,62	1,51E+08	1

Quality and reliability disclaimer

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Pricing/ordering/availability

Type number	Ordering code(12NC)	Orderable part number	Indicative price/unit($)	Region	Distributor	In stock	Order quantity	Inventory date	Buy online	Samples
74HC244BQ	9352 736 78115	74HC244BQ,115	0.3800	NA	DIGI-KEY CORPORATION	6,000		11/20/2009	Buy online	Order samples
				NA	AVNET ELECTRONICS MARKETING	6,000		11/19/2009	Buy online
74HC244D	9337 134 20652	74HC244D,652	0.2400	NA	ARROW ELECTRONICS	4,486		11/19/2009	Buy online	not available
				NA	DIGI-KEY CORPORATION	2,515		11/20/2009	Buy online
				NA	MOUSER ELECTRONICS	2,944		11/20/2009	Buy online
				NA	FUTURE ELECTRONICS	33,950		11/19/2009	Buy online
				NA	AVNET ELECTRONICS MARKETING	3,614		11/19/2009	Buy online
				NA	MOUSER ELECTRONICS	2,944		11/20/2009	Buy online
74HC244D	9337 134 20653	74HC244D,653	0.2400	NA	ARROW ELECTRONICS	4,486		11/19/2009	Buy online	Order samples
				NA	DIGI-KEY CORPORATION	87		11/20/2009	Buy online
				NA	MOUSER ELECTRONICS	2,870		11/20/2009	Buy online
				NA	FUTURE ELECTRONICS	50,873		11/19/2009	Buy online
				NA	AVNET ELECTRONICS MARKETING	20,000		11/19/2009	Buy online
				NA	NEWARK	190		11/20/2009	Buy online
				NA	MOUSER ELECTRONICS	2,870		11/20/2009	Buy online
				ASIA	WPI	2,000	2000	11/19/2009	Buy online
74HC244DB	9351 668 90112	74HC244DB,112	0.2500							not available
74HC244DB	9351 668 90118	74HC244DB,118	0.2500							Order samples
74HC244N	9336 705 40652	74HC244N,652	0.2400	NA	ARROW ELECTRONICS	1,581		11/19/2009	Buy online	Order samples
				NA	DIGI-KEY CORPORATION	1,258		11/20/2009	Buy online
				NA	MOUSER ELECTRONICS	1,283		11/20/2009	Buy online
				NA	FUTURE ELECTRONICS	16,777		11/19/2009	Buy online
				NA	AVNET ELECTRONICS MARKETING	14,516		11/19/2009	Buy online
				NA	MOUSER ELECTRONICS	1,283		11/20/2009	Buy online
				ASIA	WPI	180	18	11/19/2009	Buy online
74HC244PW	9351 746 40112	74HC244PW,112	0.2400	NA	FUTURE ELECTRONICS	845		11/19/2009	Buy online	not available
74HC244PW	9351 746 40118	74HC244PW,118	0.2400	NA	DIGI-KEY CORPORATION	3,833		11/20/2009	Buy online	Order samples
				NA	MOUSER ELECTRONICS	70		11/20/2009	Buy online
				NA	FUTURE ELECTRONICS	32,500		11/19/2009	Buy online
				NA	MOUSER ELECTRONICS	70		11/20/2009	Buy online
				ASIA	SAC - Taiwan	yes	2500	11/20/2009	Buy online
74HCT244BQ	9352 737 29115	74HCT244BQ,115	0.3600	NA	MOUSER ELECTRONICS	80		11/20/2009	Buy online	Order samples
				NA	FUTURE ELECTRONICS	100		11/19/2009	Buy online
				NA	AVNET ELECTRONICS MARKETING	6,000		11/19/2009	Buy online
				NA	ARROW ELECTRONICS	3,000		11/19/2009	Buy online
				NA	MOUSER ELECTRONICS	80		11/20/2009	Buy online
74HCT244D	9337 134 30652	74HCT244D,652	0.2400	NA	ARROW ELECTRONICS	136		11/19/2009	Buy online	not available
				NA	DIGI-KEY CORPORATION	472		11/20/2009	Buy online
				NA	FUTURE ELECTRONICS	684		11/19/2009	Buy online
				NA	AVNET ELECTRONICS MARKETING	3,627		11/19/2009	Buy online
74HCT244D	9337 134 30653	74HCT244D,653	0.2400	NA	ARROW ELECTRONICS	136		11/19/2009	Buy online	Order samples
				NA	DIGI-KEY CORPORATION	5,053		11/20/2009	Buy online
				NA	MOUSER ELECTRONICS	3,840		11/20/2009	Buy online
				NA	FUTURE ELECTRONICS	4,786		11/19/2009	Buy online
				NA	ARROW ELECTRONICS	14,000		11/19/2009	Buy online
				NA	MOUSER ELECTRONICS	3,840		11/20/2009	Buy online
				ASIA	SAC - Taiwan	yes	2000	11/20/2009	Buy online
				ASIA	SACL - Hong Kong/China	yes	2000	11/20/2009	Buy online
74HCT244DB	9351 668 80112	74HCT244DB,112	0.2500	NA	ARROW ELECTRONICS	204		11/19/2009	Buy online	not available
				NA	MOUSER ELECTRONICS	1,808		11/20/2009	Buy online
				NA	MOUSER ELECTRONICS	1,808		11/20/2009	Buy online
74HCT244DB	9351 668 80118	74HCT244DB,118	0.2500	NA	ARROW ELECTRONICS	204		11/19/2009	Buy online	Order samples
				NA	ARROW ELECTRONICS	3,000		11/19/2009	Buy online
74HCT244N	9336 707 90652	74HCT244N,652	0.2400	NA	NEWARK	924		11/20/2009	Buy online	Order samples
				NA	ARROW ELECTRONICS	618		11/19/2009	Buy online
				NA	DIGI-KEY CORPORATION	790		11/20/2009	Buy online
				NA	FUTURE ELECTRONICS	6,146		11/19/2009	Buy online
				NA	AVNET ELECTRONICS MARKETING	3,253		11/19/2009	Buy online
74HCT244PW	9351 652 20112	74HCT244PW,112	0.2400	NA	ARROW ELECTRONICS	1,990		11/19/2009	Buy online	not available
				NA	MOUSER ELECTRONICS	847		11/20/2009	Buy online
				NA	FUTURE ELECTRONICS	3,750		11/19/2009	Buy online
				NA	MOUSER ELECTRONICS	847		11/20/2009	Buy online
74HCT244PW	9351 652 20118	74HCT244PW,118	0.2400	NA	ARROW ELECTRONICS	1,990		11/19/2009	Buy online	Order samples
				NA	FUTURE ELECTRONICS	60		11/19/2009	Buy online
				ASIA	SAC - Taiwan	yes	2500	11/20/2009	Buy online
74HCT244PW/C	9352 883 99118	74HCT244PW/C,118								not available

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Applications

Related applications
Intelligent washing machine
Transceiver board
Main CPU board

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Block diagrams/pinning

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Design support

Application Notes

AN263; Power considerations when using CMOS and BiCMOS logic devices (2002-02-05)

Support Documents

D12_PC_sch_ver2_0; D12 ISA BRIDGING BOARD/D12 EVALUATION BOARD (1998-04-23)

HCT_USER_GUIDE; HC/T User Guide (1997-11-01)

D12PCKitMan; PDIUSBD12 Evaluation Board (PC Kit) User's Manual (1998-09-01)

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Parametrics/similar products

Type number	Package	Description	Propagation Delay(ns)	Voltage	No. of Pins	Power Dissipation Considerations	Logic Switching Levels	Output Drive Capability
74HC244BQ	SOT764-1 (DHVQFN20)	Octal Buffer/Line Driver; Non-Inverting (3-State)	9@5V	2.0-6.0 V	20	Low Power or Battery Applications	CMOS	+/- 7.8 mA
74HC244D	SOT163	Octal Buffer/Line Driver; Non-Inverting (3-State)	9@5V	2.0-6.0 V	20	Low Power or Battery Applications	CMOS	+/- 7.8 mA
74HC244DB	SOT339	Octal Buffer/Line Driver; Non-Inverting (3-State)	9@5V	2.0-6.0 V	20	Low Power or Battery Applications	CMOS	+/- 7.8 mA
74HC244N	SOT146-1 (DIP20)	Octal Buffer/Line Driver; Non-Inverting (3-State)	9@5V	2.0-6.0 V	20	Low Power or Battery Applications	CMOS	+/- 7.8 mA
74HC244PW	SOT360	Octal Buffer/Line Driver; Non-Inverting (3-State)	9	2.0-6.0 V	20	Low Power or Battery Applications	CMOS	+/- 7.8 mA
74HCT244BQ	SOT764-1 (DHVQFN20)	Octal Buffer/Line Driver; Non-Inverting; TTL Enabled (3-State)	11	4.5-5.5 V	20	Low Power	TTL	+/- 6 mA
74HCT244D	SOT163	Octal Buffer/Line Driver; Non-Inverting; TTL Enabled (3-State)	11	4.5-5.5V	20	Low Power	TTL	+/- 6 mA
74HCT244DB	SOT339	Octal Buffer/Line Driver; Non-Inverting; TTL Enabled (3-State)	11	4.5-5.5V	20	Low Power	TTL	+/- 6 mA
74HCT244N	SOT146-1 (DIP20)	Octal Buffer/Line Driver; Non-Inverting; TTL Enabled (3-State)	11	4.5-5.5V	20	Low Power	TTL	+/- 6 mA
74HCT244PW	SOT360	Octal Buffer/Line Driver; Non-Inverting; TTL Enabled (3-State)	11	4.5-5.5V	20	Low Power	TTL	+/- 6 mA
74HCT244PW/C	SOT360	Octal Buffer/Line Driver; Non-Inverting; TTL Enabled (3-State)	11	4.5-5.5V	20	Low Power	TTL	+/- 6 mA

Similar products
74HC244; 74HCT244 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.

Datasheet

74HC244; 74HCT244 - Octal buffer, line driver; 3-state

General description

Features

Products/packages

Quality/reliability/chemical content

Pricing/ordering/availability

Applications

Block diagrams/pinning

Design support

Parametrics/similar products

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