83948AYILFT

Overview

The Renesas 83948AYI-147LFT is a clock fanout buffer and multiplexer IC manufactured by Renesas Electronics Corporation. It features a 2:12 input-to-output ratio, supporting a maximum frequency of 350 MHz. The device accepts multiple input logic standards including HCSL, LVCMOS, LVDS, LVHSTL, LVPECL, LVTTL, and SSTL, while providing LVCMOS and LVTTL outputs. It operates on a supply voltage range of 2.375V to 3.465V and is housed in a 32-LQFP surface-mount package with dimensions of 7x7 mm. The component is rated for an operating temperature range of -40°C to 85°C.

Feature Summary

• 2:12 Fanout Buffer and Multiplexer Configuration
• Maximum Frequency Support up to 350 MHz
• Multi-Standard Input Compatibility (LVDS, LVPECL, HCSL, etc.)
• Single Supply Voltage Operation (2.375V ~ 3.465V)

Applications

• High-speed digital system clock distribution
• Multiplexing clock sources in communication infrastructure
• Fanout buffering for LVCMOS/LVTTL loads

Procurement Notes

The 83948AYI-147LFT is officially classified as obsolete and no longer manufactured by Renesas Electronics Corporation. Product Change Notices indicate end-of-life status effective June 12, 2020. Procurement should focus on verifying the authenticity of remaining stock from authorized distributors or secondary market suppliers, as new production units are unavailable.

Selection Notes

Designers requiring this specific 2:12 ratio and 350 MHz performance must evaluate alternative components due to the obsolescence of the 83948A series. Selection criteria should prioritize compatible input/output voltage levels, pin compatibility if replacing on existing boards, and availability status. Verify that substitute devices support the required input signal formats such as LVDS or LVPECL.

Part Context

This component belongs to the ICS83948A family of clock buffers and multiplexers. The suffix 'AYI' denotes specific packaging and temperature grade variations, while '147LFT' indicates the lead-free tape and reel packaging format. The base part number is 83948A.

Replacement Considerations

Public data identifies NB3V8312CFAG from onsemi as a similar replacement option. Verification of electrical parameters and pinout compatibility is required before substitution.