ICS8701CYT

Clock Generators, PLLs, Frequency Synthesizers Overview

The ICS8701CYT is a low skew, ÷1, ÷2 LVCMOS/LVTTL clock generator manufactured by Renesas Electronics Corporation. It provides twenty LVCMOS outputs with a typical output impedance of 7 Ω, designed to drive 50 Ω series or parallel terminated transmission lines. The device supports maximum output frequencies up to 250 MHz and operates at 3.3V input supply (VDD) with either 3.3V or 2.5V output supply (VDDO). Key electrical parameters include a maximum output skew of 250 ps, bank skew of 200 ps, multiple frequency skew of 300 ps, and part-to-part skew of 600 ps. Propagation delay ranges from 2.2 ns to 3.6 ns depending on the supply configuration. The component is characterized for ambient operating temperatures between 0°C and 70°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Twenty LVCMOS outputs with 7 Ω typical output impedance
• Maximum output frequency of 250 MHz
• Low skew performance: 250 ps max output skew, 600 ps max part-to-part skew
• Bank enable logic allows individual disabling of output banks

Clock Generators, PLLs, Frequency Synthesizers Applications

• Clock distribution in systems requiring well-defined performance and repeatability
• Driving 50 Ω series or parallel terminated transmission lines
• Applications utilizing redundant clock inputs or specific divide ratios

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the manufacturer designation, as the datasheet identifies Integrated Device Technology (IDT) as the original source, now part of Renesas. Confirm the specific ordering suffix matches the required package and shipping format, such as 'CYLFT' for tape and reel versus 'CYLF' for tray packaging. Ensure the voltage requirements align with the 3.3V core and 2.5V/3.3V output options specified in the DC characteristics.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when low skew and precise timing are critical for clock distribution networks. The device supports both ÷1 and ÷2 division modes per bank, controlled via DIV_SEL inputs. Verify that the system load conditions match the test conditions for skew specifications (equal load, same supply voltages). Consider the thermal dissipation characteristics if operating near the upper temperature limit of 70°C.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The ICS8701 belongs to the 8701 family of low skew clock generators. It is functionally similar to other devices in the series but specifically offers twenty outputs divided into four banks. The part number 'ICS8701CYT' indicates the commercial temperature range (0°C to 70°C) and likely corresponds to the 'CYLFT' variant in tape and reel packaging, though the 'T' suffix is not explicitly defined in the provided ordering table.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Users should consult Renesas or IDT technical support for direct replacements or pin-compatible alternatives within the 8701 family.