CY2DP814ZXC

Overview

The CY2DP814ZXC is a 1:4 clock fanout buffer manufactured by Cypress Semiconductor Corp. It features a single configurable input supporting LVDS, LVPECL, or LVTTL logic families, and provides four differential pairs of LVPECL outputs. Designed for data communications clock management, it reduces loading on the input clock source. The device operates at a maximum frequency of 450 MHz with a typical propagation delay of less than 4 ns and output-to-output skew of 85 ps. It requires a 3.3 V supply (3.135V to 3.465V) and functions within a commercial temperature range of 0°C to 70°C.

Feature Summary

• Configurable single input accepts LVDS, LVPECL, or LVTTL signals via the CONFIG pin.
• Four differential LVPECL output pairs capable of driving 50-ohm loads.
• Low skew performance with 85 ps typical output-to-output skew.
• High-speed operation up to 450 MHz with less than 4 ns typical propagation delay.

Applications

• Data communications clock distribution
• Level translation from single-ended to LVPECL
• Distribution of LVDS-based clock signals

Procurement Notes

Verify the package type matches the required footprint; this part uses a 16-pin TSSOP. Confirm the ordering suffix 'X' indicates bulk tube packaging rather than tape and reel. Ensure the design supports the specified 3.3V supply voltage and commercial temperature range requirements.

Selection Notes

Select this component when a low-skew fanout buffer is needed for LVDS or LVPECL clocks. The configurable input allows flexibility in interfacing with different logic families. Verify that the 16-TSSOP package dimensions fit the PCB layout constraints and that the 450 MHz maximum frequency meets the system timing requirements.

Part Context

The CY2DP814ZXC belongs to the Cypress CY2 series of network circuits, produced using 0.35-micron CMOS technology. This specific part number denotes the lead-free version in a 16-pin TSSOP package intended for commercial temperature applications. It is part of a family designed for high-speed logic applications requiring precise clock distribution.

Replacement Considerations

The CY2DP814ZXCT is a compatible alternative offering the same electrical specifications but packaged in tape and reel format instead of bulk tubes. Other variants like CY2DP814SI are available in SOIC packages if the TSSOP footprint is unsuitable.

FAQ

How is the input logic family selected?

The input receiver configuration is determined by the state of the CONFIG pin (Pin 2). A logic low selects LVDS or LVPECL, while a logic high selects LVTTL/LVCMOS.

What is the maximum operating frequency?

The maximum frequency is 450 MHz under standard load conditions with a 50% duty cycle at 3.3V VDD.

Can the inputs be inverted?

Yes, for LVTTL/LVCMOS inputs, the signal can be inverted or kept true by grounding either the IN+ or IN- pin, as detailed in the function control table.