NTE74LS629 Datasheet | NTE Electronics

scription: The NTE74LS629 is a dual voltage controlled oscillator in a 16- Lead plastic DIP type package that is an improved version of the original NTE74LS124 VCO. This new device Features improved voltage- to- frequency linearity, range, and pensation and Features two independent VCO’s is a single monolithic chip. The output frequency for each VCO 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 as well as one for frequency range. 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. When the enable input is low, the output is enabled; when the enable input is high, the internal oscillator i disabled, Y is high, and Z is low. 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 Enable Input - - - - - - - - - - - - - . 7V Frequency...