Infineon Technologies CY22392ZXI-388

Overview

CY22392ZXI-388 from Cypress Semiconductor is a three-PLL, flash-programmable clock generator in 16-pin TSSOP package, supporting 3.3 V operation, 8–30 MHz crystal input or 1–166 MHz driven reference, and up to six configurable outputs (CLKA–CLKE, XBUF) with 7-bit post-dividers and /2–/4 synchronous division on CLKE. It delivers low-jitter, high-accuracy timing for multimedia SoCs and industrial control systems.

For engineers reviewing the CY22392ZXI-388 datasheet, CY22392ZXI-388 pinout, CY22392ZXI-388 application, or CY22392ZXI-388 equivalent, key selection criteria include programmable crystal load capacitance (6–30 pF), glitch-free 3-bit frequency select (S0/S1/S2), nonvolatile flash configuration, PLL relock behavior after shutdown, and CyClocksRT™-based design validation.

Technical Context

The CY22392ZXI-388 integrates three independent PLLs, each with an 11-bit P-divider and 8-bit Q-divider, enabling precise frequency synthesis from a single reference. Its crosspoint switch routes reference, PLL1, PLL2, or PLL3 to four output paths (CLKA–CLKD), each with a dedicated 7-bit post-divider.

CLKE derives directly from PLL1 with fixed /2, /3, or /4 synchronous division; XBUF provides buffered reference. Crystal drive strength and on-die linear load capacitors (6–30 pF, 0.375 pF step) are programmable to ensure stability across temperature, aging, and crystal vendor variations.

Key Specifications

Pinout & Package

Package: 16-pin TSSOP (4.4 mm × 5.0 mm, 0.65 mm pitch), RoHS-compliant, JEDEC MO-153 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with Si5338A-A-GM and ICS843002AGI-01LFT, CY22392ZXI-388 uniquely combines field-programmable flash memory, hardware-selectable frequency modes via S0–S2, and industrial temperature support in a cost-optimized TSSOP package - making it optimal for embedded systems requiring robust, reconfigurable, and pin-controlled clocking without external memory or differential drivers.

Availability

CY22392ZXI-388 is available at Aetrix Electronics and suitable for video processing SoCs, industrial PLC controllers, and high-speed data acquisition systems requiring stable component supply, long-term lifecycle assurance, and field-programmable flexibility.

Supply support for CY22392ZXI-388 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 programmable system-on-chip (PSoC), memory, and timing solutions for industrial, automotive, and consumer markets.

The CY22392 product line delivers flash-programmable, multi-PLL clock generators targeting applications demanding field-reconfigurable timing, low-jitter synthesis, and industrial temperature reliability - especially where crystal optimization and hardware-selectable frequencies are critical.

FAQ

What is the maximum output frequency supported by CY22392ZXI-388?

The device supports output frequencies up to 200 MHz on any of its six outputs (CLKA–CLKE, XBUF). This is achieved through internal PLL multiplication and post-division, with CLKE limited to /2, /3, or /4 of PLL1 output. The 200 MHz limit applies under specified operating conditions (VDD = 3.3 V, TA = 25 °C) and assumes proper load capacitance (≤15 pF) and signal integrity layout.

Can CY22392ZXI-388 operate without an external crystal?

Yes - it accepts a driven CMOS clock input (1–166 MHz) on XTALIN, provided XTALOUT is left floating. In this mode, the internal crystal oscillator circuit is bypassed, and the device uses the external clock as its reference source. All PLLs, dividers, and outputs remain fully functional, and programmable features like crystal load capacitance are disabled.

How does the S2/SUSPEND pin differ from SHUTDOWN/OE?

SHUTDOWN/OE globally disables all PLLs, oscillator, and outputs, reducing current to <5 µA. S2/SUSPEND offers granular control: it can suspend selected PLLs and/or outputs while keeping others active - e.g., shutting down PLL2 and CLKD while maintaining PLL1, CLKE, and XBUF. Configuration of S2 behavior is set via CyberClocksRT™ software during programming.

Is CY22392ZXI-388 compatible with the older CY2292 family?

Yes - CY22392ZXI-388 is a functional upgrade to the CY2292, sharing identical pinout, voltage levels, and basic register map. It adds wider frequency range, improved jitter performance, enhanced crystal drive control, and expanded programmability. Existing CY2292 designs can migrate with minimal layout changes and updated configuration files generated in CyClocksRT™.