CY29940AI

Clock Buffers, Drivers Overview

The CY29940AI is a low-voltage clock distribution buffer supporting frequencies up to 200 MHz. It accepts either differential LVPECL or single-ended LVCMOS/LVTTL inputs, selectable via the TCLK_SEL pin. The device provides 18 LVCMOS/LVTTL outputs capable of driving series or parallel terminated transmission lines, achieving an effective fanout of 1:36. It operates on dual or single supplies ranging from 2.375 V to 3.465 V. Key electrical parameters include a typical output-to-output skew of 60 ps and a maximum input frequency of 200 MHz.

Clock Buffers, Drivers Feature Summary

• Supports 200-MHz clock frequencies with LVPECL or LVCMOS/LVTTL inputs
• Provides 18 LVCMOS/LVTTL outputs for high fanout applications
• Features low output-to-output skew (typical 60 ps)
• Compatible with 2.5V or 3.3V core and output supplies

Clock Buffers, Drivers Applications

• Nested clock trees in synchronous systems
• Primary system clock distribution
• Test clock generation and distribution

Clock Buffers, Drivers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation. The 'AI' suffix denotes the Industrial temperature range (-40°C to +85°C) and tube packaging. Confirm availability status as product lifecycles may change. Ensure supply voltage requirements match the target application design constraints before procurement.

Clock Buffers, Drivers Selection Notes

Select this component when a 1:18 or 1:36 fanout is required with low skew characteristics. Choose based on input signal type; use PECL_CLK for differential LVPECL sources or TCLK for single-ended logic levels. Verify that the operating temperature range meets the environmental specifications of the deployment site.

Clock Buffers, Drivers Part Context

This part belongs to the CY29940 series of clock buffers manufactured by Cypress Semiconductor. It is functionally pin-compatible with MPC940L and MPC9109 devices. The AI variant specifically indicates the industrial temperature grade and standard tube shipping format.

Clock Buffers, Drivers Replacement Considerations

The datasheet confirms pin compatibility with MPC940L and MPC9109. These parts may serve as direct replacements if electrical specifications align with the system requirements.