
74AC280
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
ΣΟDD
A to I
NAME AND FUNCTION
Parity Outputs
Data Inputs
NC
GND
VCC
No Connection
Ground (0V)
Positive Supply Voltage
TRUTH TABLE
NUMBER OF INPUTS A - I THAT ARE HIGH
LOGIC DIAGRAM
0, 2, 4, 6, 8
1, 3, 5, 7, 9
OUTPUTS
ΣEVEN
H
L
ΣODD
L
H
2/10