MM74HCT244 − Octal 3-STATE Buffer

The MM74HCT240 and MM74HCT244 3-STATE buffers utilize advanced silicon-gate CMOS technology and are general purpose high speed inverting and non-inverting buffers. They possess high drive current outputs which enable high speed operation even when driving large bus capacitances. These circuits achieve speeds comparable to low power Schottky devices, while retaining the low power consumption of CMOS. All three devices are TTL input compatible and have a fanout of 15 LS-TTL equivalent inputs.     MM74HCT devices are intended to interface between TTL and NMOS components and standard CMOS devices. These parts are also plug-in replacements for LS-TTL devices and can be used to reduce power consumption in existing designs.     The MM74HCT240 is an inverting buffer and the MM74HCT244 is a non-inverting buffer. Each device has two active low enables (1G and 2G), and each enable independently controls 4 buffers.     All inputs are protected from damage due to static discharge by diodes to V_CC and Ground.

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Product Status/Pricing/Packaging

Index	Product	Product & Eco Status	*Pricing	Packaging & Packing Info	**Package Marking Convention	Qualification Support	Compliance Certificates
0	MM74HCT244SJX	Full Production ROHS Compliant	$0.2117	SOP 20L Details SOP 20L Drawing  TAPE REEL	Line 1:$Y (Fairchild logo) &Z (Plant Code) &2 (2-Digit Date Code) &K Line 2:HCT244SJ	FIT :  0.9   Moisture Sensitivity Level (MSL) :  1   Max Reflow Temp :  260	RoHS IPC1752 RoHS/REACH/JIG RoHS/REACH/JIG
2	MM74HCT244N	Obsolete as of 02-Mar-2011 ROHS Compliant Replacement Part: MC74HCT244AN	N/A	MDIP 20L Details MDIP 20L Drawing  RAIL	Line 1:$Y (Fairchild logo) &Z (Plant Code) &4 (4-Digit Date Code) &K&P (Marketing Status Code)	Moisture Sensitivity Level (MSL) :  NA   Max Reflow Temp :  999	RoHS IPC1752 RoHS/REACH/JIG RoHS/REACH/JIG
0	MM74HCT244WM	Full Production ROHS Compliant	$0.2581	SO 20L WB Details SO 20L WB Drawing  RAIL	Line 1:$Y (Fairchild logo) &Z (Plant Code) &2 (2-Digit Date Code) &K Line 2:MM74HCT Line 3:244WM	FIT :  0.9   Moisture Sensitivity Level (MSL) :  1   Max Reflow Temp :  260	RoHS IPC1752 RoHS/REACH/JIG RoHS/REACH/JIG
0	MM74HCT244MTCX	Full Production Green as of Aug 2011	$0.174	TSSOP 20L Details TSSOP 20L Drawing  TAPE REEL	Line 1:$Y (Fairchild logo) &Z (Plant Code) &2 (2-Digit Date Code) &K Line 2:HCT244	FIT :  0.9   Moisture Sensitivity Level (MSL) :  1   Max Reflow Temp :  260	RoHS IPC1752 RoHS/REACH/JIG RoHS/REACH/JIG
0	MM74HCT244MTC	Full Production Green as of Aug 2011	$0.174	TSSOP 20L Details TSSOP 20L Drawing  RAIL	Line 1:$Y (Fairchild logo) &Z (Plant Code) &2 (2-Digit Date Code) &K Line 2:HCT244	FIT :  0.9   Moisture Sensitivity Level (MSL) :  1   Max Reflow Temp :  260	RoHS IPC1752 RoHS/REACH/JIG RoHS/REACH/JIG
0	MM74HCT244SJ	Full Production ROHS Compliant	$0.2248	SOP 20L Details SOP 20L Drawing  RAIL	Line 1:$Y (Fairchild logo) &Z (Plant Code) &2 (2-Digit Date Code) &K Line 2:HCT244SJ	FIT :  0.9   Moisture Sensitivity Level (MSL) :  1   Max Reflow Temp :  260	RoHS IPC1752 RoHS/REACH/JIG RoHS/REACH/JIG
0	MM74HCT244WMX	Full Production ROHS Compliant	$0.2581	SO 20L WB Details SO 20L WB Drawing  TAPE REEL	Line 1:$Y (Fairchild logo) &Z (Plant Code) &2 (2-Digit Date Code) &K Line 2:MM74HCT Line 3:244WM	FIT :  0.9   Moisture Sensitivity Level (MSL) :  1   Max Reflow Temp :  260	RoHS IPC1752 RoHS/REACH/JIG RoHS/REACH/JIG

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• Fairchild 1,000 piece Budgetary Pricing. *
• If there is no sample button displayed at the top of the page, please contact one of the Fairchild distributors or your local sales office to obtain samples.
• Top mark packaging information for product MM74HCT244 is available. **

Features

• TTL input compatible
• Typical propagation delay: 14 ns
• 3-STATE outputs for connection to system buses
• Low quiescent current: 80 µA
• High output drive current: 6 mA (min)

Applications

Server & Mainframe Workstation Desktop PC Notebook PC PC Server Media Tablets Storage & Peripherals Printer Graphic Card LCD Monitor CRT/RPTV

Other Data Processing Routers & LAN Switches SAN Long-haul & Metro Broadband Access Broadband Modem Enterprise Voice Network Central Office Broadcast & Studio Other Wired Communications Mobile Handsets

Wireless LAN Card & Broadband Access Wireless LAN Access Point/Router Mobile Comm Infrastructure Other Wireless Communications PMP/MP3 Players Home Audio System Components CRT/RPTV LCD TV PDP TV Camcorder DVD

Set Top Boxes DSC Video Game Console E-book Reader Consumer Appliances Other Audio & Video Other Consumer Electronics Medical Electronics/Devices Automation Test and Measurement Building & Home Control

Other Industrial

Application Notes

Models

For additional information please visit the Models page.

Package	Condition	Temperature Range	Vcc Range	Software Version	Revision Date
IBIS
SO 20L WB	Electrical;Fast;Slow;Thermal;Typical	-40°C to 85°C	4.5V to 5.5V	2.1	Feb 28, 2012
TSSOP 20L	Electrical;Fast;Slow;Thermal;Typical	-40°C to 85°C	4.5V to 5.5V	2.1	Feb 28, 2012
HSPICE
SO 20L WB	Fast	25°C to 150°C	4.5V to 5.5V	97.4	Feb 28, 2012
	Slow	25°C to 150°C	4.5V to 5.5V	97.4	Feb 28, 2012
	Typical	25°C to 150°C	4.5V to 5.5V	97.4	Feb 28, 2012