DESCRIPTION
It is composed of nine data inputs (A to I) and odd/even parity outputs (ΣODD and ΣEVEN). The PIN CONNECTION AND IEC LOGIC SYMBOLS December 1998 1/8 74ACT280 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION
PIN No 5, 6 8, 9, 10, 11, 12, 13, 1, 2, 4 3 7 14 SYMBOL ΣEVEN ΣODD A to I NAME AND FUNCT ION Parity Outputs Data Inputs NC GND VCC No Connection Ground (0V) Positive Supply Voltage TRUTH TABLE NUMBER OF INPUT A TRHU I T HAT ARE HIGH 0, 2, 4, 6, 8 1, 3, 5, 7, 9 ΣEVEN H L OUTPUT Σ ODD L H LOGIC DIAGRAM 2/8 74ACT280 ABSOLUTE MAXIMUM RATINGS
Symbol VCC VI VO IIK IOK IO Tstg TL Supply Voltage DC Input Voltage DC Output Voltage DC Input Diode Current DC Output Diode Current DC Output Current Storage Temperature Lead Temperature (10 sec) Parameter Value -0.5 to +7 -0.5 to VCC + 0.5 -0.5 to VCC + 0.5 ± 20 ± 20 ± 50 ± 200 -65 to +150 300 Unit V V V mA mA mA mA o o ICC or IGND DC VCC or Ground Current C C ABSOLUTE MAXIMUM RATINGS
are those values beyond which damage to the device may occur.
STMicroelectronics
