Infineon Technologies CY22180FSXI

Overview

CY22180FSXI from Cypress Semiconductor is a field-programmable, low-jitter clock generator with integrated PLL, delivering 20–166 MHz output frequency over industrial temperature (–40°C to +85°C), 3.3V operation, and programmable crystal load capacitance (12–60 pF). It supports external crystal (10–30 MHz) or reference clock (10–133 MHz) inputs and provides two outputs: low-jitter CLKOUT and buffered REFOUT - used in telecom line cards, industrial PLCs, and embedded networking equipment.

For engineers reviewing the CY22180FSXI datasheet, CY22180FSXI pinout, CY22180FSXI application, or CY22180FSXI equivalent, key selection criteria include its reprogrammable flash-based configuration, sub-75 ps pk-pk period jitter (typ. 60 ps), dual-mode PD#/OE control, and SOIC-8 package compatibility with standard PCB layouts.

Technical Context

The CY22180FSXI implements a single-loop integer-N PLL with programmable feedback and output dividers, enabling precise frequency synthesis from crystal or clock inputs. Its on-die oscillator supports AT-cut fundamental crystals and includes digitally tunable load capacitors at XIN/XOUT pins for CL matching without external components.

Output control is configurable as either active-low power-down (PD#) or active-high output enable (OE), with distinct timing behavior: PD# disables PLL and oscillator (IDDS ≤ 40 μA), while OE places outputs in high-Z without affecting PLL lock state (tPU2 = 2–3 ms).

Key Specifications

Pinout & Package

Package: 8-pin SOIC (150-mil), surface-mount, RoHS-compliant, JEDEC MS-012 compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar clock generator applications.

Compared with IDT5V41066PGG and Si5351A-D-GM, the CY22180FSXI uniquely balances industrial-grade reliability, field reprogrammability, ultra-low jitter, and minimal external components - making it optimal for single-output, high-stability, mid-volume embedded clocking where design iteration and supply chain continuity matter.

Availability

CY22180FSXI is available at Aetrix Electronics and suitable for industrial automation, telecom infrastructure, and consumer electronics requiring stable component supply, long-term lifecycle support, and field-programmable clock flexibility.

Supply support for CY22180FSXI 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 U.S.-based semiconductor company specializing in programmable system-on-chip (PSoC), memory, and timing solutions for industrial, automotive, and communications markets.

The CY22180 belongs to Cypress's CyberClocks™ family of programmable clock generators, designed specifically for applications demanding low jitter, field configurability, and robust crystal oscillator integration in space-constrained industrial and networking systems.

FAQ

Can the CY22180FSXI be reprogrammed in-system?

No - CY22180FSXI requires socket-based programming using the CY3672-USB programmer and CY3619 adapter. It does not support in-circuit or ISP programming. Reprogramming must occur before soldering or via socketed test fixtures. The device retains its configuration through power cycles and supports up to 100 erase/write cycles.

What is the maximum allowable load capacitance on CLKOUT and REFOUT?

The datasheet specifies a maximum load capacitance of 10 pF for both CLKOUT and REFOUT pins. Exceeding this value degrades edge rate and increases jitter. For driving standard CMOS inputs or 50 Ω transmission lines, use series termination or buffer amplifiers to maintain signal integrity within this limit.

How does the choice between PD# and OE affect system power-up timing?

When configured as PD#, power-up time (tPU1/tPU2) is 3.5–5 ms (crystal) or 2–3 ms (reference clock). As OE, outputs enable immediately upon signal assertion, but the PLL remains continuously powered - increasing standby current from ≤40 μA (PD#) to ~11–15 mA (active). OE avoids PLL re-lock delay but sacrifices power savings.

Is external bypass capacitance required beyond the 0.1 µF VDD capacitor?

Yes - Cypress recommends a 0.1 µF ceramic capacitor placed as close as possible to the VDD pin (pin 2), plus a bulk 4.7–10 µF tantalum or aluminum electrolytic capacitor near the power entry point. This dual-capacitor strategy suppresses both high-frequency switching noise and low-frequency rail droop during PLL lock transitions.