CD74HC240 - High Speed CMOS Logic Inverting Octal Buffers/Line Drivers with 3-State Outputs

The ’HC240 and ’HCT240 are inverting three-state buffers having two active-low output enables. The CD74HC241, ’HCT241, ’HC244 and ’HCT244 are non-inverting three-state buffers that differ only in that the 241 has one active-high and one active-low output enable, and the 244 has two active-low output enables. All three types have identical pinouts.

Products containing the "CD74HC240" keyword are: CD74HC240E , CD74HC240E , CD74HC240E/74HC240P , CD74HC240EE4 , CD74HC240EX , CD74HC240M , CD74HC240M , CD74HC240M96 , CD74HC240M96E4 , CD74HC240M96G4 , CD74HC240ME4 , CD74HC240MG4

• HC/ HCT240 Inverting
• HC/ HCT241 Non-Inverting
• HC/ HCT244 Non-Inverting
• Typical Propagation Delay = 8ns at V_CC = 5V, C_L = 15pF, T_A = 25°C for HC240
• Three-State Outputs
• Buffered Inputs
• High-Current Bus Driver Outputs
• Fanout (Over Temperature Range)
  • Standard Outputs . . . . . . 10 LSTTL Loads
  • Bus Driver Outputs . . . . . 15 LSTTL Loads
• Wide Operating Temperature Range . . . –55°C to 125°C
• Balanced Propagation Delay and Transition Times
• Significant Power Reduction Compared to LSTTL Logic ICs
• HC Types
  • 2V to 6V Operation
  • High Noise Immunity: N_IL = 30%, N_IH = 30% of V_CC at V_CC = 5V
• HCT Types
  • 4.5V to 5.5V Operation
  • Direct LSTTL Input Logic Compatibility, V_IL = 0.8V (Max), V_IH = 2V (Min)
  • CMOS Input Compatibility, I_l 1µA at V_OL, V_OH

Data sheet acquired from Harris Semiconductor