NTE1254中文资料NTE数据手册PDF规格书

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 P . 1 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