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LC7185 PLL Frequency Synthesizer

This 27 MHz band, PLL frequency synthesizer LSI chip is designed specifically for CB transceivers. The specifications are suited for use in U.S.A.(FCC).
The LC7185-8750 incorporates PLL circuitry and a controller for CB applications on a single CMOS chip. The controller handles the PLL circuitry, frequency data ROM, channel preset/recall RAM, and LED display driver. It also supports channel scan, channel preset/recall, and emergency channel call.

PinNameDescription
1SADisplay Segment a
2SBDisplay Segment b
3SCDisplay Segment c
4SDDisplay Segment d
5SEDisplay Segment e
6SFDisplay Segment f
7SGDisplay Segment g
8D1
9D2
10KI1Keyboard In 1
11KI2Keyboard In 2
12KI3Keyboard In 3
13KI4Keyboard In 4
14KO1Keyboard Out 1
15KO2Keyboard Out 2
16KO3Keyboard Out 3
17BEEP
18UL
19XOUTX-tal Out
20XINX-tal In
21Vss2
22TEST
23PIN
24GNDGround
25INIT
26HOLD
27PD
28Vss1
29NCNo Connection
30TX

Explanation of pin function terms



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