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www.lansdale.com page 1 of 15 issue a ml12013 mecl pll components dual modulus prescaler legacy device: motorola mc12013 this device is a two?odulus prescaler which will divide by 10 and 11. a mecl?o?ttl translator is provided to interface directly with the mc12014 counter control logic. in addition, there is a buffered clock input and mecl bias voltage source. ? 550 mhz (?0/11) ? mecl to mttl translator on chip ? mecl and mttl enable inputs ? 5.0 or ?.2 v operation* ? buffered clock input ?series input rc typ, 20 and 4.0 pf ? v bb reference voltage ? 310 milliwatts (typ) * when using a 5.0 v supply, apply 5.0 v to pin 1 (v cco ), pin 6 (mttl v cc ), pin 16 (v cc ), and ground pin 8 (v ee ). when using ?.2 v supply, ground pin 1 (v cco ), pin 6 (mttl v cc ), and pin 16 (v cc ) and apply ?.2 v to pin 8 (v ee ). if the translator is not required, pin 6 may be left open to conserve dc power drain. note : lansdale lead free ( p b ) product, as it becomes available, will be identified by a part number prefix change from ml to ml e .
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www.lansdale.com page 3 of 15 issue a lansdale semiconductor, inc. ml12013 figure 2b shhows a generic block diagram of connecting a prescaler to a pll device that supports dual modulus control. application note an535 describes using a two?odulus prescaler technique by using prescaler higher frequencies can be achieved than by a single cmos pll device ml12013 figure 2b generic block diagram showing prescaler connection to pll device vco loop filter prescaler pll ml145146 ml145158 ml145159 fout fin mc mc in
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www.lansdale.com page 15 of 15 issue a lansdale semiconductor, inc. ml12013 lansdale semiconductor reserves the right to make changes without further notice to any products herein to improve reliabili- ty, function or design. lansdale does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others. ?ypical parameters which may be provided in lansdale data sheets and/or specifications can vary in different applications, and actual performance may vary over time. all operating parameters, including ?ypicals must be validated for each customer application by the customers technical experts. lansdale semiconductor is a registered trademark of lansdale semiconductor, inc.

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