MM74HC244

Octal 3-STATE Buffer

General DescriptionGeneral Description

The MM74HC244 is a non-inverting buffer and has two active low enables (1G and 2G); each enable independently controls 4 buffers. This device does not have Schmitt trigger inputs.

These 3-STATE buffers utilize advanced silicon-gate CMOS technology and are general purpose high speed 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 advantage of CMOS circuitry, i.e., high noise immunity, and low power consumption. All three devices have a fanout of 15 LS-TTL equivalent inputs.

All inputs are protected from damage due to static discharge by diodes to VCC and ground.

Product Status/Pricing/PackagingProduct Status/Pricing/Packaging

ProductProduct statusEco StatusPricing*Package typeLeadsPacking methodPackage DrawingPackage Marking Convention**
MM74HC244MTCFull ProductionRoHS Compliant$0.172TSSOP20RAIL PDFLine 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code)
&K Line 2: HC244
MM74HC244MTCXFull ProductionRoHS Compliant$0.172TSSOP20TAPE REEL PDFLine 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code)
&K Line 2: HC244
MM74HC244NFull ProductionRoHS Compliant$0.383DIP20RAIL PDFLine 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&4 (4-Digit Date Code)
&K&P (Marketing Status Code)
Line 2: MM74HC244N Line 3: MC74HC244N
MM74HC244SJFull ProductionRoHS Compliant$0.294SOP20RAIL PDFLine 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code)
&K Line 2: HC244SJ
MM74HC244SJXFull ProductionRoHS Compliant$0.287SOP20TAPE REEL PDFLine 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code)
&K Line 2: HC244SJ
MM74HC244WMFull ProductionRoHS Compliant$0.282SOIC-Wide20RAIL PDFLine 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code)
&K Line 2: MM74HC Line 3: 244WM
MM74HC244WMXFull ProductionRoHS Compliant$0.25SOIC-Wide20TAPE REEL PDFLine 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code)
&K Line 2: MM74HC Line 3: 244WM

Related ProductsSupport

Related ProductsEngineering Connections

Qualification SupportQualification Support


FeaturesFeatures


  • Typical propagation delay: 14 ns
  • 3-STATE outputs for connection to system buses
  • Wide power supply range: 2-6V
  • Low quiescent supply current: 80 µA
  • Output current: 6 mA

Application NotesApplication Notes

ModelsModels

For additional information please visit the Models page.

Package & leadsConditionTemperature rangeVcc rangeSoftware versionRevision date
HSPICE
SOIC-Wide-20Slow25°C to 150°C4.5V to 5.5V97.4Jan 1, 1999
Typical25°C to 150°C4.5V to 5.5V97.4Jan 1, 1999
Fast25°C to 150°C4.5V to 5.5V97.4Jan 1, 1999
IBIS
SOIC-Wide-20All-40°C to 85°C4.5V to 5.5V2.1Feb 16, 1999
TSSOP-20All-40°C to 85°C4.5V to 5.5V2.1Feb 16, 1999

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