MC12032A

Order this document by MC12032A/D Consider MC12054A for New Design 2.0GHz Dual Modulus Prescaler MC12032A MC12032B The MC12032A 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. The MC12032B can be used with CMOS synthesizers requiring negative edges to trigger internal counters. 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. NOTE: The “B” Version Is Not Recommended for New Designs 2.0 GHz Toggle Frequency Supply Voltage 4.5 to 5.5 V MC12032A for Positive Edge Triggered Synthesizers 12 mA Maximum, –40 to 85°C, VCC = 5.5 Vdc Modulus Control Input Level Is Compatible With Standard CMOS and TTL Low–Power 8.5 mA Typical MECL PLL COMPONENTS ÷64/65, ÷128/129 DUAL MODULUS PRESCALER SEMICONDUCTOR TECHNICAL DATA 8 1 D SUFFIX PLASTIC PACKAGE CASE 751 (SO–8) FUNCTIONAL TABLE SW MC Divide Ratio HH 64 HL 65 LH 128 LL 129 NOTES: 1. SW: H = VCC, L = Open. A logic L can also be applied by grouunding this pin, but this is not recommended due to increased power soncumption. 2. MC: H = 2.0 V to VCC, L = GND to 0.8 V. DESIGN GUIDE Criteria Value Unit Internal Gate Count* 67 ea Internal Gate Propagation Delay 200 ps Internal Gate Power Dissipati...