2305MI-1HLFT

Overview

The ICS2305MI-1HLFT is a 3.3V zero-delay, low-skew clock buffer manufactured by Renesas Electronics (formerly IDT). It utilizes a PLL-based architecture to provide four true CMOS outputs with minimal propagation delay. The device operates within an industrial temperature range of -40°C to +85°C and is housed in an 8-pin SOIC package. Key electrical parameters include an input frequency range of 10 MHz to 133 MHz, output skew less than 250 ps, and device-to-device skew under 700 ps. It features 25 mA drive capability at TTL levels and supports tri-state mode for board-level testing.

Feature Summary

• Zero-delay operation using on-chip PLL feedback from CLKOUT pad
• Four low-skew CMOS outputs with <250 ps skew specification
• Industrial temperature range availability (-40°C to +85°C)
• Tri-state mode support for board-level testing

Applications

• SDRAM clock distribution
• Telecom equipment timing
• Datacom systems
• PC motherboards and workstations

Procurement Notes

Verify the specific suffix 'LFT' against official Renesas documentation to confirm lead-free status and tape-and-reel packaging configuration. Cross-reference the part number with current Renesas product transition notices, as legacy IDT parts may have superseded designations or updated manufacturing sites. Ensure compatibility with required operating voltage and temperature grades before procurement.

Selection Notes

Select this component when zero input-output delay is critical for synchronous system designs. The 2305MI-1H variant offers faster rise and fall times compared to the base 2305-1 model. Confirm that the 3.3V supply voltage aligns with the target system logic levels. Verify that the 8-pin SOIC package fits the PCB footprint constraints and that the 133 MHz maximum frequency meets the application's clock speed requirements.

Part Context

This component belongs to the IDT 2305 series of high-speed clock buffers, now managed by Renesas Electronics following their acquisition of IDT. The series is designed for low phase noise and high-speed clock distribution applications. The 'MI' designation typically indicates the industrial temperature grade and package type, while 'LFT' denotes lead-free construction and reel packaging.

Replacement Considerations

Direct substitutes include the 2305-1DCGI for similar performance in tube packaging or the 2305A-1HDCGI8 for the newer A-series revision. Verify pinout compatibility and electrical specifications against the original datasheet before substitution.