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參數(shù)資料
| 型號： | DM7490AN |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | Decade and Binary Counters |
| 中文描述： | TTL/H/L SERIES, ASYN NEGATIVE EDGE TRIGGERED 3-BIT UP DECADE COUNTER, PDIP14 |
| 封裝： | 0.300 INCH, PLASTIC, MS-001, DIP-14 |
| 文件頁數(shù)： | 2/5頁 |
| 文件大?。?/td> | 47K |
| 代理商： | DM7490AN |
www.fairchildsemi.com
2
D
Function Tables
BCD Count Sequence
(Note 1)
BCD Bi-Quinary (5-2)
(Note 2)
Reset/Count Function Table
H
=
HIGH Level
L
=
LOW Level
X
=
Don’t Care
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
Logic Diagram
The J and K inputs shown without connection are for reference only and
are functionally at a HIGH level.
Count
Outputs
Q
C
L
L
L
L
H
H
H
H
L
L
Q
D
L
L
L
L
L
L
L
L
H
H
Q
B
L
L
H
H
L
L
H
H
L
L
Q
A
L
H
L
H
L
H
L
H
L
H
0
1
2
3
4
5
6
7
8
9
Count
Outputs
Q
D
L
L
L
L
H
L
L
L
L
H
Q
A
L
L
L
L
L
H
H
H
H
H
Q
C
L
L
H
H
L
L
L
H
H
L
Q
B
L
H
L
H
L
L
H
L
H
L
0
1
2
3
4
5
6
7
8
9
Reset Inputs
R0(2)
Outputs
Q
C
L
L
L
COUNT
COUNT
COUNT
COUNT
R0(1)
R9(1)
R9(2)
Q
D
L
L
H
Q
B
L
L
L
Q
A
L
L
H
H
H
X
X
L
L
X
H
H
X
L
X
X
L
L
X
H
X
L
X
L
X
L
H
L
X
L
X
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DM74ALS00 | Quad 2-Input NAND Gate |
| DM74ALS00AM | Quad 2-Input NAND Gate |
| DM74ALS00AN | Low-Offset Voltage Operational Amplifier 8-SOIC 0 to 70 |
| DM74ALS00ASJ | Low-Offset Voltage Operational Amplifier 8-SOIC 0 to 70 |
| DM74ALS00A | Quad 2-Input NAND Gate(四2輸入與非門) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DM7490AN/A+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Asynchronous Up Counter |
| DM7490AN/B+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Asynchronous Up Counter |
| DM7491AN | 制造商:Texas Instruments 功能描述: |
| DM7492AJ/A+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Asynchronous Up Counter |
| DM7492AN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Asynchronous Up Counter |
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