DM7490AN Fairchild Semiconductor, DM7490AN Datasheet - Page 2

• Manufacturer Part Number: DM7490AN
• Description: IC COUNTER BINARY/DECADE 14-DIP
• Manufacturer: Fairchild Semiconductor
• Series: 7400r

Specifications of DM7490AN

• Logic Type: Binary Counter, Decade
• Number Of Elements: 1
• Number Of Bits Per Element: 4
• Count Rate: 32MHz
• Trigger Type: Positive Edge
• Voltage - Supply: 4.75 V ~ 5.25 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 14-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Direction: -
• Reset: -
• Timing: -
• Other names: 7490; 7490N; DM7490N

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Function Tables
H
L
X
Note 1: Output QA is connected to input B for BCD count.
Note 2: Output QD is connected to input A for bi-quinary count
R0(1)
LOW Level
HIGH Level
Don’t Care
Count
Count
H
H
X
X
X
L
L
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
R0(2)
Reset Inputs
H
H
X
L
X
X
L
Reset/Count Function Table
BCD Count Sequence (Note 1)
BCD Bi-Quinary (5-2) (Note 2)
Q
Q
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
D
A
R9(1)
X
H
X
X
L
L
L
R9(2)
Q
Q
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
C
D
X
H
X
X
L
L
L
Outputs
Outputs
Q
H
L
L
D
Q
Q
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
B
C
Outputs
Q
COUNT
COUNT
COUNT
COUNT
L
L
L
C
Q
L
L
L
B
Q
Q
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
A
B
Q
H
L
L
A
2
Logic Diagram
The J and K inputs shown without connection are for reference only and
are functionally at a HIGH level.