Enhanced Product Octal Buffers And Line Drivers With 3-State Outputs

Enhanced Product Octal Buffers And Line Drivers With 3-State Outputs - SN74HCT244-EP


This octal buffer and line driver is designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The SN74HCT244 device is organized as two 4-bit buffers/drivers, with separate output-enable (OE)\ inputs. When OE\ is low, the device passes noninverted data from the A inputs to the Y outputs. When OE\ is high, the outputs are in the high-impedance state.


  • Controlled Baseline
    • One Assembly/Test Site, One Fabrication Site
  • Extended Temperature Performance of –40°C to 125°C
  • Enhanced Diminishing Manufacturing Sources (DMS) Support
  • Enhanced Product-Change Notification
  • Qualification Pedigree
  • Operating Voltage Range of 4.5 V to 5.5 V
  • High-Current Inverting Outputs Drive Up To 15 LSTTL Loads
  • Low Power Consumption, 160-µA Max ICC
  • Typical tpd = 13 ns
  • ±6-mA Output Drive at 5 V
  • Low Input Current of 1 µA Max
  • Inputs Are TTL-Voltage Compatible
  • 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers

Component qualification in accordance with JEDEC and industry standards to ensure reliable operation over an extended temperature range. This includes, but is not limited to, Highly Accelerated Stress Test (HAST) or biased 85/85, temperature cycle, autoclave or unbiased HAST, electromigration, bond intermetallic life, and mold compound life. Such qualification testing should not be viewed as justifying use of this component beyond specified performance and environmental limits.

View more

Parametrics Compare all products in Buffer Drivers

Technology Family
VCC (Min) (V)
VCC (Max) (V)
Bits (#)
Voltage (Nom) (V)
Input Type
Output Type
Schmitt Trigger
Operating Temperature Range (C)
Package Group
SN74HCT244-EP SN54HCT244
HCT    HCT   
4.5    4.5   
5.5    5.5   
8    8   
5    5   
TTL    TTL   
No    No   
HiRel Enhanced Product    Military   
-40 to 125    -55 to 125   

Other qualified versions of SN74HCT244-EP

Version Part Number Definition
Military SN54HCT244 QML certified for Military and Defense Applications
Catalog SN74HCT244 TI's standard catalog product
Automotive SN74HCT244-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects