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参数资料
| 型号： | SN54HC4060FKR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 计数器 |
| 英文描述： | HC/UH SERIES, ASYN NEGATIVE EDGE TRIGGERED 14-BIT UP BINARY COUNTER, CQCC20 |
| 封装： | CERAMIC, LCC-20 |
| 文件页数： | 16/19页 |
| 文件大小： | 687K |
| 代理商： | SN54HC4060FKR |
SN54HC4060, SN74HC4060
14STAGE ASYNCHRONOUS BINARY COUNTERS AND OSCILLATORS
SCLS161D DECEMBER 1982 REVISED SEPTEMBER 2003
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
CONNECTING AN RC-OSCILLATOR CIRCUIT TO THE ’HC4060 DEVICES
The ’HC4060 devices consist of an oscillator section and 14 ripple-carry binary counter stages. The oscillator
configuration allows design of either RC- or crystal-oscillator circuits.
When an RC-oscillator circuit is implemented, two resistors and a capacitor are required. The components are
attached to the terminals as shown:
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
R2
R1
C
To determine the values of capacitance and resistance necessary to obtain a specific oscillator frequency (f), use
this formula:
f
+
1
2(R1)(C)
0.405 R2
R1
)R2 ) 0.693
If R2 > > R1 (i.e., R2 = 10R1), the above formula simplifies to:
f
+ 0.455
RC
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