NTE74LS625 Datasheet | NTE Electronics

Description : The NTE74LS625 is a dual voltage controlled oscillator in a 16- Lead plastic DIP type package that is an improved version of the original NTE74LS325 VCO. This new device features improved voltage- to- frequency linearity, range, and pensation as well as two independent VCO’s and has plementary Z outputs. The output frequency is established by a single external capacitor in bination with voltage- sensitive inputs used for frequency control and frequency range. This device has a voltage- sensitive input for frequency control. A single 5V supply can be used; however, one set of supply voltage and ground pins (VCC and GND) is provided fo the enable, synchronization- gating, and output sections, and a separate set (OSC VCC and OSC GND) is provided for the oscillator and associated frequency- control circuits so that effective isolation can be acplished in the system. For operation of frequencies greater than 10Mhz, it is remended that two independent supplies be used. Disabling either VCO can b achieved by removing the appropriate OSC VCC. Caution! Crosstalk may occur when both VCO’s are operated simultaneously. The pulse- synchronization- gating section ensures that the first output pulse is neither clipped nor extended. The duty cycle of the square- wave output is fixed at approximately 50 percent. Features : D Separate Supply Voltage Pins for Isolation of Frequency Control Inputs and Oscillator from Output Circuitry D Highly Stable Operation over Specified Temperature and/or Supply Voltage Ranges Absolute Maximum Ratings: (Note 1) Supply Voltage (Note 2), VCC - - - - - - - - - - - . . 7V Input Voltage - - - - - - - - - - - - - - . 7V Operating Temperature Range, TA - - - - - - - - . . . . 0C to +70C...