Parity Generator/Checker 9-Bit 14-Pin SOIC T/R

The ’HC280 and ’HCT280 are 9-bit odd/even parity, generator checker devices. Both even and odd parity outputs are available for checking or generating parity for words up to nine bits long. Even parity is indicated (SE output to any input of an additional HC/HCT280 parity checker.

Typical Propagation Delay = 17ns at V_CC = 5V, C_L = 15pF, T_A = 25°C

Replaces LS180 Types

Easily Cascadable

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