MM74HCT244 − Octal 3-STATE Buffer

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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 VCC and Ground.

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Product Status/Pricing/Packaging

Product Product & Eco Status *Pricing Packaging & Packing Info **Package Marking Convention Qualification Support Compliance Certificates
0 MM74HCT244SJX Full Production
ROHS Compliant
$0.2182  Details
1.8 x 5.3 x 12.6mm
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  
0 MM74HCT244WM Full Production
ROHS Compliant
$0.2581  Details
2.337 x 7.468 x 15.342mm
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  
0 MM74HCT244MTCX Full Production
Green as of Aug 2011
$0.174  Details
1.2 x 4.4 x 6.5mm
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  
0 MM74HCT244MTC Full Production
Green as of Aug 2011
$0.174  Details
1.2 x 4.4 x 6.5mm
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  
0 MM74HCT244WMX Full Production
ROHS Compliant
$0.2581  Details
2.337 x 7.468 x 15.342mm
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  
0 MM74HCT244SJ Full Production
ROHS Compliant
$0.2182  Details
1.8 x 5.3 x 12.6mm
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  
Show discontinued variants ...

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
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
IBIS
TSSOP 20L Electrical;Fast;Slow;Thermal;Typical -40°C to 85°C 4.5V to 5.5V 2.1 Feb 28, 2012
SO 20L WB Electrical;Fast;Slow;Thermal;Typical -40°C to 85°C 4.5V to 5.5V 2.1 Feb 28, 2012


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