CD74HC02 - High Speed CMOS Logic Quad 2-Input NOR Gates

The ’HC02 and ’HCT02 logic gates utilize silicon-gate CMOS technology to achieve operating speeds similar to LSTTL gates with the low power consumption of standard CMOS integrated circuits. All devices have the ability to drive 10 LSTTL loads. The HCT logic family is functionally pin compatible with the standard LS logic family.

• Buffered Inputs
• Typical Propagation Delay: 7ns at V_CC = 5V, C_L = 15pF, T_A = 25°C
• 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