M-993 Description
The M-993 is a monolithic CMOS integrated circuit designed to generate multifrequency (MF) tone pairs for use in trunk signaling. The tones generated conform to CCITT R1 signal remendations and to AT&T MF standards. The M-993 permits design engineers to implement a highly accurate MF sender with a minimum of space, power, and added ponents.
M-993 Key Features
- Generates standard CCITT R1 MF tones
- Digital input control
- Linear (analog) output
- Power output capable of driving standard line
- 14-pin DIP
- Single 5-Volt supply
- Inexpensive 3.58 MHz time base