Infineon Technologies CY2510ZXC-1

Overview

CY2510ZXC-1 from Cypress Semiconductor is an eleven-output Spread Aware™ zero-delay buffer IC designed for DDR SDRAM DIMM clock distribution. It operates at 3.3 V, supports 40–140 MHz output frequencies, delivers <100 ps cycle-to-cycle jitter and <100 ps output-to-output skew, and integrates 25 Ω series damping resistors on all eleven LVCMOS/LVTTL outputs for direct trace termination in memory module applications.

For engineers reviewing the CY2510ZXC-1 datasheet, CY2510ZXC-1 pinout, CY2510ZXC-1 application, or CY2510ZXC-1 equivalent, this device is selected for PC100/PC133 SDRAM clock fanout where spread-spectrum timing compatibility, sub-100-ps jitter, and matched-output synchronization to motherboard reference clocks are required.

Technical Context

The CY2510ZXC-1 implements a PLL-based zero-delay architecture with external feedback (FBIN/FBOUT) to align output edges precisely with the CLK input. Its Spread Aware™ design preserves spread-spectrum modulation from SSFTG sources, preventing tracking skew in EMI-sensitive systems.

All eleven outputs (Q0–Q9, FBOUT) are LVCMOS/LVTTL-compatible with integrated 25 Ω series resistors; a single OE pin controls global output enable/disable. The device requires matched PCB trace lengths between FBOUT–FBIN and Qx–load to achieve true zero-delay operation across DIMM address/control lines.

Key Specifications

Pinout & Package

Package: 24-pin thin shrink small outline package (TSSOP), lead-free, commercial temperature range (0 °C to +70 °C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar zero-delay clock buffer applications.

Compared with CY2509ZXC-1, CY2510ZXC-1 adds one output and simplifies enable control; versus IDT5V2310PGGI, it delivers lower jitter, built-in termination, and guaranteed SSFTG compatibility-critical for DIMM timing integrity.

Availability

CY2510ZXC-1 is available at Aetrix Electronics and suitable for DDR SDRAM DIMM clock distribution, PC133 memory module timing, and EMI-sensitive motherboard clocking requiring stable component supply and long-term lifecycle support.

Supply support for CY2510ZXC-1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Cypress Semiconductor (now part of Infineon Technologies) is a fabless semiconductor company specializing in high-performance timing, memory, and programmable logic solutions for computing and communications infrastructure.

The CY25xx family was developed specifically for high-speed memory subsystem clock distribution, emphasizing zero-delay synchronization, spread-spectrum compatibility, and integrated signal integrity features for DDR SDRAM DIMMs.

FAQ

What is the purpose of the FBIN and FBOUT pins?

FBIN and FBOUT form an external feedback loop essential for zero-delay operation. FBOUT provides a buffered copy of the internal PLL output; connecting it to FBIN with a trace length matched to output-to-load traces ensures all clock edges arrive simultaneously at destination devices-not just at the buffer outputs-achieving true system-level synchronization.

Does CY2510ZXC-1 require external termination resistors?

No. Each of the eleven outputs-including Q0–Q9 and FBOUT-integrates a 25 Ω series damping resistor. This eliminates the need for external series resistors, simplifying PCB layout, reducing component count, and improving signal integrity on stub-loaded DIMM traces without compromising edge rate or overshoot.

How does Spread Aware™ functionality improve system timing?

Spread Aware™ preserves the spread-spectrum modulation present on the CLK input from SSFTG sources. Non-Spread Aware™ buffers filter this modulation, causing variable phase shifts between outputs and inducing tracking skew-potentially violating DDR setup/hold windows. CY2510ZXC-1 passes modulation intact, maintaining consistent relative timing across all outputs.

Can CY2510ZXC-1 operate at 133 MHz reliably?

Yes. The device is production-tested at 133 MHz and specified for 40–140 MHz operation. Its <100 ps cycle-to-cycle jitter, <100 ps output-to-output skew, and robust PLL lock time (<1.0 ms) ensure stable, jitter-compliant clock distribution for PC133 SDRAM modules under commercial temperature and voltage conditions.