2.0 GHz Super Low Power Dual Modulus Prescaler

The MC12054A 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 5.4 mW at a minimum supply voltage of 2.7 V.

The MC12054A 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 2.0 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.

• 2.0 GHz Toggle Frequency

• The MC12054 is Pin and Functionally Compatible with the MC12031

• Low Power 2.0 mA Typical

• 2.6mA Maximum, –40 to 85°C, VCC = 2.7 to 5.5 Vdc

• Short Setup Time (tset) 10ns Maximum @ 2.0 GHz

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

• Maximum Input Voltage Should Be Limited to 6.5 Vdc