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MC12079P データシート(PDF) 1 Page - Texas Instruments |
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MC12079P データシート(HTML) 1 Page - Texas Instruments |
1 / 4 page MC12079 SEMICONDUCTOR TECHNICAL DATA MECL PLL COMPONENTS ÷64/128/256 PRESCALER Order this document by MC12079/D P SUFFIX PLASTIC PACKAGE CASE 626 PIN CONNECTIONS D SUFFIX PLASTIC PACKAGE CASE 751 (SO–8) 8 1 1 8 IN (Top View) 8 IN VCC SW1 OUT NC SW2 Gnd 7 6 5 1 2 3 4 Device Operating Temperature Range Package ORDERING INFORMATION MC12079D MC12079P TA = – 40° to +85°C SO–8 Plastic 2.8 GHz Prescaler The MC12079 is a single modulus divide by 64, 128, 256 prescaler for low power frequency division of a 2.8 GHz (typical) high frequency input signal. Divide ratio control inputs SW1 and SW2 select the required divide ratio of ÷64, ÷128, or ÷256. An external load resistor is required to terminate the output. A 1.2 k Ω resistor is recommended to achieve a 1.6 Vpp output swing, when dividing a 1.1 GHz input signal by the minimum divide ratio of 64, assuming a 12 pF load. Output current can be minimized dependent on conditions such as output frequency, capacitive load being driven, and output voltage swing required. Typical values for load resistors are included in the Vout specification for various divide ratios at 2.8 GHz input frequency. • 2.8 GHz Toggle Frequency • Supply Voltage 4.5 to 5.5 V • Low Power 9mA Typical at VCC = 5.0 V • Operating Temperature Range of –40 to 85°C FUNCTIONAL TABLE SW1 SW2 Divide Ratio H H 64 H L 128 L H 128 L L 256 NOTE: SW1 & SW2: H = VCC, L = Open. MAXIMUM RATINGS Characteristic Symbol Range Unit Power Supply Voltage, Pin 2 VCC –0.5 to 7.0 Vdc Operating Temperature Range TA –40 to 85 °C Storage Temperature Range Tstg –65 to 150 °C Maximum Output Current, Pin 4 IO 4.0 mA NOTE: ESD data available upon request. © Motorola, Inc. 1997 Rev 3 |
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同様の説明 - MC12079P |
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