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M-959

Clare Inc.
Part Number M-959
Manufacturer Clare Inc.
Description Dial Pulse Counter and Hook Status Monitor
Published Mar 30, 2005
Detailed Description M-959 Dial Pulse Counter and Hook Status Monitor Features • Time-guarded dial pulse counting • 10 or 20 PPS dialing spee...
Datasheet PDF File M-959 PDF File

M-959
M-959

Overview
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 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 M959 receives pulses from the loop current sense circuit 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.
Pin Diagram Orderin...


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