MM55108 PLL Frequency Synthesizer

Overview

This 27 MHz band, PLL frequency synthesizer LSI chip is designed specifically for CB transceivers. The integrated circuit`s incorporates PLL circuitry and a controller for CB applications on a single CMOS chip.
This PLL-circuit use a 8 bit BCD binary programmable divide-by-N counter.

Pin	Name	Description
1	Vcc	Positive Supply Voltage
2	F in	VCO Frequency Input
3	RI	Reference Oscillator Input
4	RO	Reference Oscillator Output
5	1/2R	Reference Oscillator Output divide by 2
6	RB	Reference Oscillator Output (Buffered)
7	PD	Phase Detector Output
8	LD	Loop Detect - Unlocked=LOW Locked=HIGH
9	P8	Programmable input 8
10	P7	Programmable input 7
11	P6	Programmable input 6
12	P5	Programmable input 5
13	P4	Programmable input 4
14	T/R	Transmit=HIGH - Receive=LOW
15	P3	Programmable input 3
16	P2	Programmable input 2
17	P1	Programmable input 1
18	GND	Ground

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