The MC12052A is a super low power dual modulus prescaler used in phase–locked loop applications. Motorola’s advanced Bipolar MOSAIC V technology is utilized to achieve low power dissipation of 2.7 mW at a minimum supply voltage of 2.7 V. The MC12052A can be used with CMOS synthesizers requiring positive edges to trigger internal counters such as Motorola’s MC145XXX series in a PLL to provide tuning signals up to 1.1 GHz in programmable frequency steps.

A Divide Ratio Control (SW) permits selection of a 64/65 or 128/129 divide ratio as desired.

The Modulus Control (MC) selects the proper divide number after SW has been biased to select the desired divide ratio.

• 1.1 GHz Toggle Frequency

• The MC12052 is Pin and Functionally Compatible with the MC12022

• Low Power 1.0 mA Typical

• 2.0 mA Maximum, –40 to 85°C, VCC = 2.7 to 5.5 Vdc

• Short Setup Time (tset) 16 ns Maximum @ 1.1 GHz

• Modulus Control Input Level is Compatible with Standard CMOS and TTL

• Maximum Input Voltage Should Be Limited to 6.5 Vdc