542MLFT

Overview

The Renesas 542MLFT is a clock fan-out buffer and divider integrated circuit housed in an 8-SOIC package. It accepts a CMOS input signal up to 156 MHz and provides two tri-state CMOS outputs with a 1:2 division ratio. The device operates on a supply voltage ranging from 3V to 5.5V within an industrial temperature range of 0°C to 70°C. This component serves as a cost-effective solution for generating high-quality divided clock signals, such as producing low-skew 50 MHz and 25 MHz clocks from a 100 MHz input.

Feature Summary

• Clock fan-out buffer and divider with 1:2 input-to-output ratio
• Maximum operating frequency of 156 MHz
• Tri-state CMOS outputs with OE pin control
• All-chip power-down mode capability

Applications

• Generating low-skew divided clock signals from higher frequency inputs
• System clock distribution in digital circuits
• PCIe clocking architectures requiring specific division ratios

Procurement Notes

The 542MLFT part number is officially listed as obsolete and no longer manufactured by Renesas Electronics Corporation. Procurement should focus on verifying the availability of parameter-equivalent replacement parts, such as the 542MLF, through authorized distributors. Buyers must confirm current stock levels and lead times for these substitutes, as direct sourcing of the original suffix variant is not possible.

Selection Notes

Designers requiring this functionality should evaluate the 542MLF as a primary alternative. Selection criteria must include verification of the 8-SOIC package dimensions (0.154 inch width) and compatibility with the 3V to 5.5V supply range. Ensure that the replacement part meets the required 156 MHz maximum frequency and supports the necessary tri-state output configuration for the target application.

Part Context

The 542MLFT belongs to the ICS542 family of clock dividers produced by Renesas. This family includes variants like the ICS542MT and other related components such as the ICS541 and ICS543. These devices are designed to provide efficient clock division solutions, often used in conjunction with clock multipliers like the ICS501 series for comprehensive timing management in electronic systems.

Replacement Considerations

The 542MLF is identified as a parameter-equivalent substitute for the 542MLFT. Verification of pinout compatibility and electrical specifications against the original datasheet is recommended before integration.