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參數(shù)資料
| 型號(hào)： | 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(yè)數(shù)： | 1/5頁(yè) |
| 文件大?。?/td> | 123K |
| 代理商： | M-959 |
www.clare.com
DS-M959-R3
M-959
Dial Pulse Counter and Hook Status Monitor
1
Description
The M-959 is a low-power dial pulse counter and
hook status monitor. Contained in a 14-pin package,
the M-959 requires no external components except a
single 3.579 MHz television color burst crystal.
The M-959 is typically connected to a loop current
sensing circuit, which is connected in series with the
voice pair (Tip and Ring) of a telephone line. The M-
959 receives pulses from the loop current sense cir-
cuit and translates them into logic level outputs
indicating hook status and decoded dialed digits.
Logic inputs to the M-959 select dialed digit speeds
and control Data and Strobe outputs supporting bus
interrupt driven implementations.
Time-guarded dial pulse counting
10 or 20 PPS dialing speeds pin selectable
Tri-state data outputs
Valid data output strobe
Data strobe control for use in interrupt-driven
environments
Independent hook status monitoring
Low-power CMOS construction
Features
Pin Diagram
Ordering Information
Part #
M-959
Description
14-pin plastic DIP
Block Diagram
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