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PDF NTE1254 Data sheet ( Hoja de datos )
| Número de pieza | NTE1254 | |
| Descripción | Integrated Circuit Phase-Lock Loop (PLL) Frequency Synthesizer for CB | |
| Fabricantes | NTE | |
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NTE1254
Integrated Circuit
Phase–Lock Loop (PLL) Frequency
Synthesizer for CB
Features:
D Programmable Divider – Divided by 3 to 255
D 10–Bit Divider
D Phase Detector
D Reference Oscillation Circuit
D On–Chip Filter Amplifier
D Code Converter
D Only two or three crystals required for CB radio AM frequency selection
D Unlocked signals are detected at instant stop “IS” terminal
D 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
D Internal active filter amplifier has a long holding time due to very high input impedance charac-
teristics of the CMOS–this is to obtain very good spurious response.
D 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.
D High speed and low power consumption due to CMOS
D Single power supply and fully TTL compatible: VDD = 5 ± 0.5 Volts
D Operating Temperature: TA = –30° to 65°C
D Pull down resistors installed in program and mode switch inputs
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
1 page | ||
| Páginas | Total 2 Páginas | |
| PDF Descargar | [ Datasheet NTE1254.PDF ] | |
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