MC12026AD

Clock Generators, PLLs, Frequency Synthesizers Overview

The MC12026AD is a high-frequency, low-voltage dual modulus prescaler designed for phase-locked loop (PLL) applications. It provides tuning signals up to 1.1 GHz in programmable frequency steps using CMOS synthesizers that require positive edges to trigger internal counters. The device operates on a supply voltage of 4.5 V to 5.5 V with a typical power consumption of 4.0 mA. It features a toggle frequency of 1.1 GHz and supports divide ratios of 8/9 or 16/17 via Divide Ratio Control (SW) and Modulus Control (MC) inputs. The component is housed in an SOIC-8 package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Toggle Frequency: 1.1 GHz
• Supply Voltage: 4.5 V to 5.5 V
• Low Power Consumption: 4.0 mA Typical
• Operating Temperature Range: -40°C to 85°C

Clock Generators, PLLs, Frequency Synthesizers Applications

• Phase-locked loop (PLL) applications
• CMOS synthesizers requiring positive edge triggering
• Programmable frequency step generation up to 1.1 GHz

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix 'AD' against current manufacturer documentation. The datasheet lists the MC12026ADG as discontinued and not recommended for new designs. Confirm availability status and lead times directly with authorized distributors or the manufacturer before procurement planning.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a dual modulus prescaler with a 1.1 GHz toggle frequency is required for PLL circuits. Ensure the design accommodates a 4.5 V to 5.5 V supply voltage. Verify compatibility with CMOS synthesizers needing positive edge triggering. Check if the pin-compatible MC12022 serves as an alternative based on specific logic requirements.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The MC12026A belongs to the ECL series of logic integrated circuits manufactured by onsemi. It is functionally similar to the MC12022 but optimized for specific PLL architectures. The device utilizes standard CMOS and TTL compatible levels for its Modulus Control input while operating internally at high frequencies.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The MC12026ADG is listed as discontinued. The MC12026ADR2G is available in tape and reel packaging. The MC12022 is noted as pin-compatible.