CML MX165C
The MX165C CTCSS Encoder/Decoder is a low voltage, CMOS device that meets TIA/EIA-603 Standards. The MX165C will encode and decode the tones 159.8Hz, 183.5Hz, 189.9Hz, 196.6Hz, 199.5Hz, 206.5Hz, 229.1Hz, and 254.1Hz in addition to the 39 standard CTCSS tones, for a total of 47 CTCSS tones + Notone. With the incorporation of the on-chip TX and RX speech filter, the MX165C enhances voice/tone multiplexing by attenuating TX and RX speech 36dB at frequencies below 250Hz while passing signals > 300Hz with only 1dB of ripple.| Part No. | MX165C |
|---|---|
| Datasheet | MX165C Download |
| Manufacturer |  CML |
| Description | Low Voltage CTCSS Encoder/Decoder |
| Buy | Stock & Price |
FEATURES
● Meets TIA/EIA-603 Standards● 47 CTCSS Tones + Notone
● TX/RX Speech Filters
● Improved Sinad
● Serial or Parallel Programming
● Easy µP Interface
● Scanning on any Channel
● Standard 1MHz Xtal (See MX465 for 4MHz)
● Low Voltage 3.3V to 5.0V
APPLICATIONS
● Mobile Radio Channel Sharing● Scan Trunking
● Wireless Intercom Traffic Control
● Hookswitch Supervision
● Repeater Control TONE IN TONE IN FILTER + - f TONE CLKS CLKS TONE DECODE FILTER REFERENCE VOLTAGE - + LOAD/LATCH D5/SERIAL ENABLE 1 D4/SERIAL ENABLE 2 D3/SERIAL DATA IN D2/SERIAL CLOCK D1 D0 RX/TX PTL XTAL/CLK XTAL CLKS/XTAL DIGITAL INTERFACE AND CLOCK GENERATION CLKS/XTAL A0-A5 D0-D10 TONE DETECT RX TONE DETECT LOGIC TONE OUT FILTER TX TONE OUT TONE ROM 48 x 10 VDD VSS VBIAS TX AUDIO IN RX AUDIO IN DECODE COMPARATOR REF. DECODE COMPARATOR IN CLK 300Hz AUDIO FILTER + - TX AUDIO OUT RX AUDIO OUT RX TONE DECODE This not only minimizes CTCSS talk-off in the TX mode but also improves Hum and Noise performance in the RX mode.
