NTE974 Datasheet | NTE Electronics

Description : The NTE974 consists of two digital phase detectors, a charge pump, and an amplifier. In bination with a voltage controlled multivibrator, it is useful in a broad range of phase- locked loop applications. The circuit accepts MTTL waveforms at the R and V inputs and generates an error voltage that is proportional to the frequency and/or phase difference of the input signals. Phase detector #1 is intended for use in systems requiring zero frequency and phase difference at lock. Phase detector #2 is used if quadrature lock is desired. Phase detector #2 can also be used to indicate that the main loop, utilizing phase detector #1, is out of lock. Absolute Maximum Ratings: Supply Operating Voltage Range - - - - - - - - . . . . 4.75 to 5.25V Supply Voltage, VCC - - - - - - - - - - - - . . +7.0V Input Voltage, VI - - - - - - - - - - - - - +5.5V Output Voltage, VO - - - - - - - - - - - - . . . +5.5V Operating Temperature Range, Topr - - - - - - - - . . . 0° to +75°C Storage Temperature Range, Tstg - - - - - - - - . . - 55° to +125°C Maximum Junction Temperature, TJ - - - - - - - - - . . +150°C Thermal Resistance, Junction- to- Case, Rth JC -...