91309AGILFT

Overview

The Renesas Electronics 91309AGILFT 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 supports frequency ranges from 10 MHz to 133 MHz at 3.3V operation. The device features less than 125 ps cycle-to-cycle jitter, group-to-group skew under 215 ps, and within-group skew under 100 ps. It is housed in a 16-pin TSSOP package with a width of 4.40 mm and operates within a commercial temperature range of 0°C to +70°C.

Feature Summary

• Zero-delay buffer architecture using PLL technology for precise phase and frequency alignment
• Low jitter performance with less than 125 ps cycle-to-cycle jitter
• Controlled skew outputs: Group-to-Group <215 ps; Within Group <100 ps
• High loop filter bandwidth suitable for Spread Spectrum applications

Applications

• High-speed clock distribution in communication systems operating between 10 MHz and 133 MHz
• Systems requiring low skew and low jitter clock buffering
• Applications utilizing Spread Spectrum clocking techniques

Procurement Notes

The 91309AGILFT is classified as obsolete by the manufacturer. Current availability is limited, with some distributors indicating out-of-stock status or discontinuation notices. Verification of end-of-life (EOL) status and last-time-buy dates through official Renesas channels is recommended before design finalization.

Selection Notes

This component is part of the IDT/Renesas 91309 series. When selecting this part, ensure compatibility with 3.3V logic levels and verify that the 16-pin TSSOP package fits the PCB layout constraints. Consider the -40°C to +85°C industrial variant (91309AGILF) if wider temperature tolerance is required, noting the packaging differences between tube and reel options.

Part Context

The 91309AGILFT belongs to the IDT 91309 family of high-performance communication buffers. IDT was acquired by Renesas Electronics, leading to dual branding in documentation. This specific suffix 'FT' denotes tape-and-reel packaging. The device serves as a critical timing element for synchronizing clocks in data-intensive communication infrastructure.

Replacement Considerations

Renesas recommends the 2308B as a replacement for new designs. The 2308B is a 3.3V Zero Delay Clock Multiplier. Engineers should evaluate pinout compatibility and electrical parameter equivalence when migrating from the obsolete 91309AGILFT to the 2308B.