MM74HCT240

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Inverting Octal 3-STATE Buffer

General Description

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.

Product Status/Pricing/Packing

Product Product Status Eco Status *Pricing Package Type Leads Packing Method Package Drawing **Package Marking Convention RoHS IPC1752 RoHS/REACH/JIG Certificate of Compliance
MM74HCT240MTC Full Production Green as of Aug 2011 $0.284 TSSOP 20 RAIL PDF Line 1:$Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code) &K
Line 2:HCT240
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MM74HCT240MTCX Full Production Green as of Aug 2011 $0.31 TSSOP 20 TAPE REEL PDF Line 1:$Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code) &K
Line 2:HCT240
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MM74HCT240WM Full Production ROHS Compliant $0.424 SOIC-Wide 20 RAIL PDF Line 1:$Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code) &K
Line 2:MM74HCT
Line 3:240WM
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MM74HCT240WMX Full Production ROHS Compliant $0.448 SOIC-Wide 20 TAPE REEL PDF Line 1:$Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code) &K
Line 2:MM74HCT
Line 3:240WM
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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

  • Automation
  • Broadband Access
  • Broadband Modem
  • Broadcast & Studio
  • Building & Home Control
  • Camcorder
  • Central Office
  • Consumer Appliances
  • CRT/RPTV
  • Desktop PC
  • DSC
  • DVD
  • E-book Reader
  • Enterprise Voice Network
  • Graphic Card
  • Home Audio System Components
  • LCD Monitor
  • LCD TV
  • Long-haul & Metro
  • Media Tablets
  • Medical Electronics/Devices
  • Mobile Comm Infrastructure
  • Mobile Handsets
  • Notebook PC
  • Other Audio & Video
  • Other Consumer Electronics
  • Other Data Processing
  • Other Industrial
  • Other Wired Communications
  • Other Wireless Communications
  • PC Server
  • PDP TV
  • PMP/MP3 Players
  • Printer
  • Routers & LAN Switches
  • SAN
  • Server & Mainframe
  • Set Top Boxes
  • Storage & Peripherals
  • Test and Measurement
  • Video Game Console
  • Wireless LAN Access Point/Router
  • Wireless LAN Card & Broadband Access
  • Workstation

Application Notes

Models

For additional information please visit the Models page .

Package & leads Condition Temperature range Vcc range Software version Revision date
HSPICE
SOIC-Wide-20 Slow 25°C to 150°C 4.5V to 5.5V 97.4 Apr 26, 2011
Fast 25°C to 150°C 4.5V to 5.5V 97.4 Apr 26, 2011
Typical 25°C to 150°C 4.5V to 5.5V 97.4 Apr 26, 2011
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