91309AGLFT

Overview

The Renesas 91309AGLFT is a high-performance, low-skew, low-jitter zero-delay buffer clock IC. It utilizes phase-locked loop (PLL) technology to align the REF input with CLKOUT signals in both phase and frequency. Designed for communication systems, it distributes high-speed clocks operating between 10 MHz and 133 MHz at 3.3V. The device features less than 125 ps cycle-to-cycle jitter, skew-controlled outputs, and a high loop filter bandwidth suitable for spread spectrum applications. It is housed in a 16-pin TSSOP package.

Feature Summary

• Zero-delay buffer architecture using PLL technology for phase and frequency alignment
• Frequency range of 10 MHz to 133 MHz with 3.3V operation
• Cycle-to-cycle jitter specification of less than 125 ps
• Skew control: Group-to-group <215 ps; within group <100 ps

Applications

• High-speed clock distribution in communication systems
• Spread spectrum clocking applications due to high loop filter bandwidth
• Systems requiring low skew and low jitter clock synchronization

Procurement Notes

The 91309AGLFT is listed as obsolete by the manufacturer. Availability is restricted, with current stock status showing out-of-stock conditions across major distributors. Verification of component authenticity and condition is critical when sourcing from secondary markets due to the end-of-life status.

Selection Notes

Designers should consider the 2308B as a recommended replacement for new designs, as explicitly suggested by the manufacturer for this obsolete part. Ensure that the required frequency range and voltage levels match the capabilities of the substitute component before finalizing the selection.

Part Context

Originally manufactured by IDT (Integrated Device Technology), this component was acquired by Renesas Electronics. The 'G' suffix indicates a commercial temperature range of 0°C to +70°C, while the 'LFT' suffix denotes lead-free packaging and RoHS compliance. It belongs to the 91309 series of clock buffers.

Replacement Considerations

The manufacturer recommends the 2308B as a direct alternative for new design and re-design activities. Verify pin compatibility and electrical specifications against the 2308B datasheet to ensure seamless integration into existing layouts.