DM74LS390N Fairchild Semiconductor, DM74LS390N Datasheet - Page 2

• Manufacturer Part Number: DM74LS390N
• Description: Counter ICs Dl 4-Bit Dec Counter
• Manufacturer: Fairchild Semiconductor

Specifications of DM74LS390N

• Mounting Style: Through Hole
• Package / Case: DIP-16
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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Function Tables
BCD Count Sequence
H
L
Note 1: Output Q
Note 2: Output Q
Logic Diagram
LOW Level
HIGH Level
Count
0
1
2
3
4
5
6
7
8
9
A
D
is connected to input B for BCD count.
is connected to input A for Bi-quinary count.
(Each Counter) (Note 1)
Q
H
H
L
L
L
L
L
L
L
L
D
Q
H
H
H
H
L
L
L
L
L
L
C
Outputs
Q
H
H
H
H
L
L
L
L
L
L
B
Q
H
H
H
H
H
L
L
L
L
L
A
2
Bi-Quinary (5-2)
Count
0
1
2
3
4
5
6
7
8
9
(Each Counter) (Note 2)
Q
H
H
H
H
H
L
L
L
L
L
A
Q
H
H
L
L
L
L
L
L
L
L
D
Outputs
Q
H
H
H
H
L
L
L
L
L
L
C
Q
H
H
H
H
L
L
L
L
L
L
B