M54477L

The M54477L is a semiconductor integrated circuit consisting of a 1/128, 1/136 2-modulus divider using emitter coupled logic(ECL).The M54477L 1/128 or 1/136 prescaler,consists of a high speed frequency divider using an ECL circuit con-figuration.

Features of the M54477L are:(1)high-speed operation(fmax=1.0GHz);(2)operates at low input amplitudes(-20dBm min
);(3)ECL level output.The application is prescalers for PLL synthesized TV tuners amd general use in consumer and industrial digital equipment.

The absolute maximum ratings of the M54477L can be summarized as:(1):the symbol is VCC,the parameter is supply voltage,the rating is -0.4 to 7,the unit is V;(2):the symbol is VI,the parameter is input voltage,the rating is 0 to VCC,the unit is V;(3):the symbol is Pd,the parameter is power dissipation,the rating is 1.15,the unit is W;(4):the symbol is Topr,the parameter is operating temperature,the rating is -20 to +75,the unit is ;(5):the symbol is Tstg,the parameter is storage temperature,the rating is -55 to +125,the unit is .

The electrical characteristics of the  M54477L can be summarized as:(1):the symbol is ICC,the parameter is supply current,the Typ is 33,the Max is 50,the unit is mA;(2):the symbol is VIN,the parameter is input sensitivity,the Min is -20,the Max is 4,the unit is dBm;(3):the symbol is VO,the parameter is output amplitude,the Min is 0.9,the Typ is 1.3,the Max is 1.7,the unit is Vp-p;(4):the symbol is VIH,the parameter is high-level input voltage,the Min is 0.7VCC,the unit is V;(5):the symbol is VIL,the parameter is low-level input voltage,the Max is 0.3VCC,the unit is V;(6):the symbol is IIH,the parameter is high-level input current,the Max is 50,the unit is A;(7):the symbol is IIL,the parameter is low-level input current,the Max is -150,the unit is A.