CY2DP818ZC

Overview

The CY2DP818ZC is a 1:8 clock fanout buffer manufactured by Infineon Technologies (originally Cypress Semiconductor). It operates on a single 3.3V supply and supports frequencies up to 350 MHz. The device features one configurable input supporting LVDS, LVPECL, or LVTTL/LVCMOS logic levels, controlled via the InConfig pin. It provides eight differential LVPECL output pairs designed to drive 50-ohm loads. Key electrical characteristics include a typical propagation delay of 4 ns, low output skew of 0.2 ns, and an operating temperature range of 0°C to 70°C.

Feature Summary

• Single configurable input for LVDS, LVPECL, or LVTTL/LVCMOS signals
• Eight differential LVPECL output pairs driving 50-ohm loads
• Low propagation delay (typical 4 ns) and low output skew (0.2 ns)
• Operates at 350 MHz with a 3.3V power supply

Applications

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

Procurement Notes

Verify the manufacturer origin, as the part was originally produced by Cypress Semiconductor before its acquisition by Infineon. Confirm the package type is 38-pin TSSOP and ensure the commercial temperature grade (0°C to 70°C) matches system requirements. Check for specific ordering suffixes such as 'T' for tape and reel packaging if applicable.

Selection Notes

Select this component when a single clock source needs distribution to eight LVPECL destinations. Ensure the input signal matches the configured receiver family (LVDS, LVPECL, or LVTTL) by setting the InConfig pin correctly. Verify that the 3.3V supply voltage and 350 MHz maximum frequency align with the system's timing and power constraints.

Part Context

The CY2DP818ZC belongs to the CY2DP818 series of clock fanout buffers. This series includes variants with different temperature ratings and packaging options, such as industrial grades (-40°C to 85°C) and tape-and-reel configurations. The ZC suffix specifically denotes the commercial temperature range in a tube package.

Replacement Considerations

Direct replacements within the same series include CY2DP818ZI (Industrial), CY2DP818ZIT (Industrial Tape & Reel), and CY2DP818ZXI/ZXC/ZXCT (Pb-Free versions). Ensure any substitute maintains the 38-TSSOP package and compatible electrical specifications.

FAQ

How is the input signal type configured?

The input type is user-configurable via the InConfig pin (Pin 7). Setting it high selects LVTTL/LVCMOS single-ended input, while setting it low selects LVDS/LVPECL differential input.

What is the maximum operating frequency?

The maximum operating frequency is 350 MHz under standard load circuit conditions with a 3.3V supply and a 45%-55% duty cycle.

What are the output specifications?

The device provides eight pairs of LVPECL outputs capable of driving a 50-ohm load. The typical propagation delay is 4 ns, and the output skew between packages is typically 1 ns.