8T49N244A-004ASGI8

Overview

The 8T49N244A-004ASGI8 is a FemtoClock NG frequency translator IC manufactured by Renesas Electronics. It operates within a supply voltage range of 2.375V to 2.625V and 3.135V to 3.465V, supporting a maximum frequency of 1.3GHz. The device features a 4:4 input-to-output ratio with differential input support but non-differential outputs. Packaged in an 80-LBGA (80-CABGA, 10x10mm) surface-mount format, it functions as a clock generator and PLL synthesizer. The component is designed for high-performance timing applications and supports multiple input standards including LVDS, LVPECL, HCSL, LVCMOS, LVTTL, and LVHSTL.

Feature Summary

• FemtoClock NG series frequency translator with 1.3GHz maximum output frequency
• 80-LBGA package with 2.375V–2.625V and 3.135V–3.465V dual supply requirements
• Supports LVDS and LVPECL output types with differential input capability
• Integrated PLL with bypass functionality for jitter attenuation

Applications

• Networking and communications equipment requiring precise clock translation
• High-speed data transmission systems utilizing LVDS/LVPECL interfaces
• Test and measurement instruments needing low-jitter frequency synthesis

Procurement Notes

This component is officially listed as discontinued by the manufacturer. Product Change Notices indicate end-of-life status effective May 30, 2025, with packaging label updates scheduled for December 8, 2025. Verification of current stock availability through authorized distributors is required, as standard ordering channels may no longer accept new orders. Compliance with RoHS3 specifications remains confirmed.

Selection Notes

Designers should verify compatibility with the specific 80-LBGA footprint and 10x10mm CABGA dimensions during PCB layout. The dual voltage supply requirement (2.5V core and 3.3V I/O) must be accommodated in the power design. Input signal integrity for LVDS/LVPECL sources should be evaluated against the device's jitter attenuation capabilities. Alternative components from the same family or successor products should be considered due to the discontinuation status.

Part Context

The 8T49N244A belongs to the FemtoClock NG Universal Frequency Translator family, which includes variants like the 8T49N242 and 8T49N366I. These devices are engineered for jitter attenuation and frequency synthesis in high-speed digital systems. The 'A' suffix typically denotes specific factory pre-programmed configurations, while 'SGI8' indicates the lead-free CABGA package variant.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult Renesas or SiTime engineering resources for qualified replacements following the business transfer timeline.