SN74HC244 Octal Buffers And Line Drivers With 3-State Outputs | TI.com

SN74HC244 (ACTIVE)

Octal Buffers And Line Drivers With 3-State Outputs

 

Description

The SNx4HC244 octal buffers and line drivers are designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The SNx4HC244 devices are organized as two 4-bit buffers and 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.

Features

  • Wide Operating Voltage Range of 2 V to 6 V
  • High-Current Outputs Drive Up to 15 LSTTL
    Loads
  • 3-State Outputs Drive Bus Lines or Buffer Memory
    Address Registers
  • Low Power Consumption: ICC, 80-µA (Maximum)
  • Typical tpd = 11 ns
  • ±6-mA Output Drive at 5 V
  • Low Input Current of 1 µA (Maximum)
  • On Products Compliant to MIL-PRF-38535,
    All Parameters Are Tested Unless Otherwise
    Noted. On All Other Products, Production
    Processing Does Not Necessarily Include
    Testing of All Parameters.

Parametrics

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Part number Order Technology Family VCC (Min) (V) VCC (Max) (V) Bits (#) Voltage (Nom) (V) F @ nom voltage (Max) (MHz) ICC @ nom voltage (Max) (mA) tpd @ nom Voltage (Max) (ns) IOL (Max) (mA) IOH (Max) (mA) Schmitt trigger Rating Operating temperature range (C)
SN74HC244 Order now HC     2     6     8     6     28     0.08     29     7.8     -7.8     No     Catalog     -40 to 85    
SN54HC244 Samples not available HC     2     6     8     6     28     0.08     29     7.8     -7.8     No     Military     -55 to 125    
SN74HC244-EP Order now HC     2     6     8     6     28     0.08     34     7.8     -7.8     No     HiRel Enhanced Product     -40 to 125
-55 to 125    
SN74HC244-Q1 Order now HC     2     6     8     6     28     0.08     34     7.8     -7.8     No     Automotive     -40 to 125