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M-959 Función - Dial Pulse Counter and Hook Status Monitor - Clare Inc.

Número de pieza M-959
Descripción Dial Pulse Counter and Hook Status Monitor
Fabricantes Clare Inc. 
Logotipo Clare  Inc. Logotipo
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M-959 Hoja de datos, Descripción, Manual
M-959
Dial Pulse Counter and Hook Status Monitor
Features
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
Pin Diagram
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.
Ordering Information
Part #
M-959
Description
14-pin plastic DIP
Block Diagram
DS-M959-R3
www.clare.com
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M-959 Datasheet ( Hojas de datos )


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Número de piezaDescripciónFabricantes
M-959Dial Pulse Counter and Hook Status MonitorClare  Inc.
Clare Inc.

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