MM74C912N 데이터 시트보기 (PDF) - Fairchild Semiconductor
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MM74C912N Datasheet PDF : 8 Pages
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Truth Tables
Input Control
X = Don’t Care
CE
Digit Address
WE
Operation
K3
K2
K1
0
0
0
0
0 Write Digit 1
0
0
0
0
1 Latch Digit 1
0
0
0
1
0 Write Digit 2
0
0
0
1
1 Latch Digit 2
0
0
1
0
0 Write Digit 3
0
0
1
0
1 Latch Digit 3
0
0
1
1
0 Write Digit 4
0
0
1
1
1 Latch Digit 4
0
1
0
0
0 Write Digit 5
0
1
0
0
1 Latch Digit 5
0
1
0
1
0 Write Digit 6
0
1
0
1
1 Latch Digit 6
0
1
1
0
0 Write Null Digit
0
1
1
0
1 Latch Null Digit
0
1
1
1
0 Write Null Digit
0
1
1
1
1 Latch Null Digit
1
X
X
X
X Disable Writing
Output Control
SOE
0
0
OSE
0
1
Operation
Refresh Display
Stop Oscillator (Note 1)
1
0
Disable Segment Outputs
1
1
Standby Mode
Note 1: Segment drive may exceed maximum display dissipation.
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