74LS244 Datasheet – Texas Instruments

Part Number : 74LS244

Description : OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS, These octal buffers and line drivers are designed specifically to improve both the performance and density of three-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The designer has a choice of selected combinations of inverting and noninverting outputs, symmetrical, active-low output-control (G)\ inputs, and complementary output-control (G and G\) inputs. These devices feature high fan-out, improved fan-in, and 400-mV noise margin. The SN74LS’ and SN74S’ devices can be used to drive terminated lines down to 133 .

Manufactures : Texas Instruments

74LS244 Datasheet Pinout


  • 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers
  • PNP Inputs Reduce DC Loading
  • Hysteresis at Inputs Improves Noise Margins

74LS244 Datasheet

PDF Download : SN74LS244.pdf


74LS244 Pinout Datasheet – ON Semiconductor

Part Number : 74LS244, 74LS240

Description : LOW POWER SCHOTTKY, The SN74LS240 and SN74LS244 are Octal Buffers and Line
Drivers designed to be employed as memory address drivers, clock
drivers and bus-oriented transmitters/receivers which provide
improved PC board density.

• Hysteresis at Inputs to Improve Noise Margins
• 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers
• Input Clamp Diodes Limit High-Speed Termination Effects


Manufactures : ON Semiconductor

 74LS244 Pinout

74LS244 Pinout



SN74LS240N, SN74LS240DW, SN74LS244N, SN74LS244DW