Datasheet

INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION (HCT564)
PIN No SYMBOL NAME AND FUNCTION
1 OE 3 State output Enable
Input (Active LOW)
2, 3, 4, 5,
6, 7, 8, 9
D0 to D7 Data Inputs
12, 13, 14,
15, 16, 17,
18, 19
Q0 to Q7 3 State outputs
11 CLOCK Clock Input (LOW to
HIGH, edge triggered)
10 GND Ground (0V)
20 V
CC
Positive Supply Voltage
PIN DESCRIPTION (HCT574)
PIN No SYMBOL NAME AND FUNCTION
1 OE 3 State output Enable
Input (Active LOW)
2, 3, 4, 5,
6, 7, 8, 9
D0 to D7 Data Inputs
12, 13, 14,
15, 16, 17,
18, 19
Q0 to Q7 3 State outputs
11 CLOCK Clock Input (LOW to
HIGH, edge triggered)
10 GND Ground (0V)
20 V
CC
Positive Supply Voltage
IEC LOGIC SYMBOLS
HCT574HCT564
M54/M74HCT564/574
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