Clare M-959
The M-959 is a low-power dial pulse counter and hook status monitor. 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.| Part No. | M-959 |
|---|---|
| Datasheet | M-959 Download |
| Manufacturer |  Clare |
| Description | Dial Pulse Counter and Hook Status Monitor |
| Buy | Stock & Price |
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
Contained in a 14-pin package, the M-959 requires no external components except a single 3.579 MHz television color burst crystal. Logic inputs to the M-959 select dialed digit speeds and control Data and Strobe outputs supporting bus interrupt driven implementations. Pin Diagram Ordering Information Part # M-959DESCRIPTION
14-pin plastic DIP Block Diagram DS-M959-R3 1 M-959ABSOLUTE MAXIMUM RATINGS
are stress ratings. Stresses in excess of these ratings can cause permanent damage to the device. Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this data sheet is not implied. Exposure of the device to the absolute maximum ratings for an extended period may degrade the device and effect its reliability.
