CY7B991V-5JXI

Overview

The CY7B991V-5JXI is a low voltage programmable skew clock buffer from the RoboClock series. It features one circuit with an 8:8 input-to-output ratio, supporting maximum frequencies up to 80 MHz. The device utilizes LVTTL outputs and operates within a supply voltage range of 2.97 V to 3.63 V. Designed for surface mount installation, it is housed in a 32-LCC (J-Lead) package, specifically identified as 32-PLCC (11.43x13.97). The component supports an extended operating temperature range from -40°C to +85°C.

Feature Summary

• Programmable skew capability for precise clock distribution
• 8:8 fanout ratio with single circuit configuration
• Operates at frequencies up to 80 MHz
• Extended industrial temperature range (-40°C to +85°C)

Applications

• High-speed digital system clock distribution
• Programmable skew adjustment in timing-critical circuits
• Low voltage logic interface buffering

Procurement Notes

Verify the specific ordering suffix 'I' against official Cypress documentation to confirm the extended temperature grade (-40°C to +85°C), as standard variants may differ. Confirm RoHS compliance status and current lifecycle stage, as older RoboClock components are frequently discontinued or subject to limited availability through authorized distributors.

Selection Notes

Select this component when an 8-channel LVTTL clock buffer with programmable skew is required for systems operating between 2.97 V and 3.63 V. Ensure the design accommodates the 32-LCC J-Lead footprint. Verify that the 80 MHz frequency limit meets the system's clock requirements and that the industrial temperature range aligns with the environmental specifications.

Part Context

This part belongs to the RoboClock family of clock buffers. It serves as a low-voltage alternative to earlier generations, offering programmable skew to manage timing delays in complex digital designs. The CY7B991V series typically integrates PLL functionality for jitter reduction and flexible clock routing in high-performance applications.

Replacement Considerations

Check for direct pin-compatible substitutes within the CY7B991V series or newer Infineon/Cypress clock buffer families. Verify that any replacement maintains the 8:8 ratio, LVTTL output levels, and 32-PLCC package dimensions.