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參數(shù)資料
| 型號： | M-959 |
| 廠商： | CLARE INC |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | Dial Pulse Counter and Hook Status Monitor |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PDIP14 |
| 封裝： | PLASTIC, DIP-14 |
| 文件頁數(shù)： | 3/5頁 |
| 文件大?。?/td> | 123K |
| 代理商： | M-959 |
Pin Functions
Pin
LC
Function
Loop Current Input. Signal from phone line to be monitored for dial pulse signaling and hook status. Active low,
internally pulled high.
Off-hook Output. Hook status of phone line. Active (off-hook) high.
Pulse Speed Input. Low for 10 pulse per second, high for 20 pulse per second. Internally pulled low.
Data Outputs. Binary decoded rotary dialed digit. Active during valid digit time (strobe high), low at any other time.
Digit Dialed D3
D2
1
0
0
2
0
0
3
0
0
4
0
1
5
0
1
6
0
1
7
0
1
8
1
0
9
1
0
0
1
0
Output Enable Input. Active high, a log low tri-states D3 through D0 outputs. Internally pulled high.
Crystal Oscillator Input
Crystal Oscillator Output.
Strobe Control Input. Momentary high during digit valid time resets STROBE latch output low until next valid
digit is received. Internally pulled low.
Digit Valid Output. Indicates valid digit data present on D3 through D0. Active high.
OH
10/20
D3-D0
D1
0
1
1
0
0
1
1
0
0
1
D0
1
0
1
0
1
0
1
0
1
0
OE
XIN
XOUT
Clear
Strobe
M-959
www.clare.com
3
Rev. 3
Timing Diagram
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