NTE1745 Integrated Circuit High Speed Divider 1/20, 1/100 for VCR
Description: The NTE1745 is a semiconductor integrated circuit in an 8-Lead SIP type package consisting of a built-in 1/20 and 1/100 high-speed frequency divider featuring an ECL circuit configuration. Features: D High-Speed Operation (fmax = 130MHz) D Operation at Low Input Amplitudes (180mVp-p Minimum Input Amplitude) D TTL Level Output Applications: FM radio prescalers, digital equipment for consumer and industrial applications Function: This divider is based on an ECL circuit configuration. When a frequency up to a maximum of 130MHz is applied to the TI input pin, 1/20-divided output is produced when the division ratio selection input pin (M) is low-level or a 1/100-divided output is produced when the division ratio selection input pin (M) is high-level. The output (TO) is available in the TTL level open collector format. Absolute Maximum Ratings: (TA = -10 to +75C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9V Input Signal Voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5Vp-p Output Signal Voltage, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V Power Dissipation (TA = +25C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.33W Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -10 to +75C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to +125C
Electrical Characteristics: (TA = -10 to +75C unless otherwise specified)
Parameter Supply Voltage Low-Level Output Current Input Frequency High Input Voltage (M Input) Low Input Voltage (M Input) Input Signal Voltage Circuit Current Low-Level Output Voltage Minimum Operating Frequency High Input Current (M Input) Low Input Current (M Input) Output Leakage Current Symbol VCC IOL fIN VIH(M) VIL(M) Vi ICC VOL fmax IIH(M) IIL(M) IO(Leak) TA = +25C VCC = 5V VCC = 4.5V, IOL = 5mA VCC = 5V, TA = +25C, VIN = 180mVp-p VCC = 5V, VIH(M) = 2.6V VCC = 5V, VIL(M) = 0.4V VCC = 5V, VO = 5.5V Pin Connection Diagram (Front View) TA = +25C Test Conditions Min 4.5 - 30 2.6 0 180 - - 130 - - - Typ 5 - - - - - 6.5 - - 2 0.1 - Max 5.5 5 130 Vcc 0.4 800 - 0.5 - - - 100 Unit V mA MHz V V mVp-p mA V MHz A A A
8 7 6 5 4 3 2 1
.768 (19.52) Max
To Open Collector Output VCC N.C. Vref Input Reference Bias Input (T) Frequency Division Ratio Selection Input (M) N.C. GND
.118 (3.0) Max
.264 (6.72) Max 1 8 .165 (4.2) Min
.100 (2.54) Typ .700 (17.78)
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