ICS553MI

Clock Buffers, Drivers Overview

The ICS553MI is a low skew, single input to four output clock buffer from the IDT ClockBlocks family. It operates within a supply voltage range of 2.375 V to 5.25 V and supports maximum input frequencies up to 200 MHz. The device features extremely low output skew with a maximum of 50 ps between outputs and additive period jitter of 1 ps. Propagation delay ranges from 4 ns at 5 V to 5 ns at 2.5 V. Packaged in an 8-pin SOIC, it includes an Output Enable pin that tri-states outputs when low. The component is designed for industrial temperature ranges (-40°C to +85°C) and utilizes low power CMOS technology.

Clock Buffers, Drivers Feature Summary

• Extremely low skew outputs with a maximum deviation of 50 ps between any two outputs.
• Supports input clock frequencies up to 200 MHz with additive period jitter of 1 ps.
• Operating voltage range of 2.375 V to 5.25 V with 5 V tolerant input clock capability.
• Output Enable (OE) pin allows tri-stating of all outputs when driven low.

Clock Buffers, Drivers Applications

• Clock distribution in networking equipment requiring low skew timing.
• Fan-out buffering for high-speed digital systems.
• Industrial control applications operating within -40°C to +85°C environments.

Clock Buffers, Drivers Procurement Notes

Verify the specific ordering suffix to confirm package type and temperature rating. The 'MI' designation indicates the industrial temperature range (-40°C to +85°C). Ensure compatibility with lead-free requirements if necessary, as non-green parts have reached end-of-life status. Confirm shipping packaging options such as tubes or tape and reel availability directly with suppliers.

Clock Buffers, Drivers Selection Notes

Select the ICS553MI for applications requiring a compact 1-to-4 clock fan-out solution with minimal skew. Ensure the design accommodates the 8-pin SOIC package dimensions. Verify that the load capacitance on outputs does not exceed specifications to maintain rise/fall times. Consider board layout symmetry to preserve the specified 50 ps output-to-output skew performance.

Clock Buffers, Drivers Part Context

The ICS553 is part of the IDT ClockBlocks family, positioned as a low skew, small form-factor clock buffer. It serves as a complement to the ICS552-02 (1-to-8 buffer) and the MK74CBxxx Buffalo series for higher output counts. The device is manufactured by Integrated Device Technology, Inc., which was later acquired by Renesas Electronics.

Clock Buffers, Drivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should verify pinout and electrical parameter compatibility before substituting with other clock buffers from the same manufacturer or competitors.