LC7444

The LC7444 consists of two independent VCO(voltage controlled oscillator) circuits.These circuits support VCO operation with only the addition of extemal resistors that detemine the oscillation range.

The absolute maximum ratings of the LC7444 can be summarized as:(1):the parameter is maximum supply voltage,the symbol is VDDmax,the rating is -0.3 to +7.0,the unit is V;(2):the parameter is maximum input voltage,the symbol is VINmax,the rating is -0.3 to VDD+0.3,the unit is V;(3):the parameter is maximum output voltage,the symbol is VOUTmax,the rating is -0.3 to VDD+0.3,the unit is V;(4):the parameter is allowable power dissipation,the symbol is Pdmax,the rating is 300,the unit is mW;(5):the parameter is operating temperature,the symbol is Topr,the rating is -10 to +70,the unit is ;(6):the parameter is storage temperature,the symbol is Tstg,the rating is -55 to +125,the unit is .

The allowable operating range of the LC7444 can be summarized as:(1):the parameter is supply voltage,the symbol is VDD,the min is 4.5,the Typ is 5.0,the max is 5.5,the unit is V;(2):the parameter is input high level voltage,the symbol is VIH,the min is 0.7VDD,the unit is V;(3):the parameter is input low level voltage,the symbol is VIL,the max is 0.3VDD,the unit is V;(4):the parameter is oscillator range resistors,the symbol is Rrng,the min is 6.8,the max is 13,the unit is k.