NTE1254
Integrated Circuit Phase-Lock Loop (PLL) Frequency Synthesizer for CB

Features:
- Programmable Divider - Divided by 3 to 255
- 10-Bit Divider
- Phase Detector
- Reference Oscillation Circuit
- On-Chip Filter Amplifier
- Code Converter
- Only two or three crystals required for CB radio AM frequency selection
- Unlocked signals are detected at instant stop “IS” terminal
- Two type program mode can be selected to change input mode level
M: Low level . Binary code input enables, divided by 3 to 255
M: High level . BCD code enables that the data at P1 to P6 port is offset 90 by code converter
- Internal active filter amplifier has a long holding time due to very high input impedance characteristics of the CMOS-this is to obtain very good spurious response.
- Output signal of the “I” can be used to stop the spurious radiation when the channel selector makes misprogramming such as rotary switch´s lose contact.
- High speed and low power consumption due to CMOS
- Single power supply and fully TTL compatible: VDD = 5 ± 0.5 Volts
- Operating Temperature: TA = -30° to 65°C
- Pull down resistors installed in program and mode switch inputs

Info as pdf-file
NTE/ECG replacement list as pdf-file
NTE-ECG diagrams

Absolute Maximum Ratings:
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +6.0V
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +6.0V
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -35° to +75°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55° to +125°C


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