MX315A

DATA BULLETIN MX315A Features  Field Programmable Tone Encoder  40 CTCSS Frequencies  Crystal-Controlled Frequency Stability  Low Distortion Sinewave Output  Few External Components Required  CMOS Low Power Requirements CTCSS Encoder Applications  Mobile Radio Base Stations & Repeater Stations  Mobile Radios  Hand-Held Radios  Industrial Controls  Intercom Systems  Door-Entry Systems Xtal/Clock Clock Generator Xtal D0-D5 Binary Rate Multiplier Programmed Clocks TX Tone Sinewave Output Emitter Follower VDD TX Enable TX Tone Square Wave TX Tone Output Enable TX Enable The MX315A is a monolithic CMOS tone encoder for sub-audible tone squelch systems, which provides three additional frequencies over the earlier MX315A. These frequencies are 69.3, 97.4 and 206.5Hz. The tone frequencies are derived from an input reference frequency. An on-chip inverter is provided to drive an external crystal circuit. Tone selection is achieved through six programming inputs and two control inputs (which allow either a logic “1” or “0” to enable the device). A low distortion sinewave is generated at the TX Tone Output when the MX315A is enabled. The emitter follower output stage can source 1mW directly into a 600 load (0dBm). The MX315A is available in the following package styles: 16-pin SOIC (MX315ADW), 14-pin PDIP (MX315AP) and 14-pin CDIP (MX315AJ).
1998 MXCOM, INC. www.mxcom.com tel: 800 638 5577 336 744 5050 fax: 336 744 5054 Doc. # 20480054.006 4800 Bethania ...