Infineon Technologies CY22392ZXC-398T

Overview

CY22392ZXC-398T from Cypress Semiconductor is a three-PLL, flash-programmable clock generator in 16-pin TSSOP package, supporting up to six configurable outputs (CLKA–CLKE, XBUF) with frequencies up to 200 MHz, 3.3 V operation, and ultra-wide divide counters (11-bit P, 8-bit Q per PLL). It serves as a functional upgrade to CY2292 for timing synthesis in multimedia and industrial systems requiring multi-frequency clock distribution.

For engineers reviewing the CY22392ZXC-398T datasheet, CY22392ZXC-398T pinout, CY22392ZXC-398T application, or CY22392ZXC-398T equivalent, key selection criteria include field-programmable PLL configuration, 7-bit post-dividers on four outputs, S0/S1/S2 frequency-select inputs, crystal load capacitance programmability (6–30 pF), and low-jitter output routing via 4×4 crosspoint switch.

Technical Context

The CY22392ZXC-398T integrates three independent, fully programmable PLLs-each with 11-bit feedback (P) and 8-bit reference (Q) dividers-feeding a 4×4 crosspoint switch that routes reference, PLL1, PLL2, or PLL3 to four outputs (CLKA–CLKD), each with a dedicated 7-bit post-divider. CLKE derives directly from PLL1 with /2, /3, or /4 synchronous division.

Crystal input supports 8–30 MHz fundamental-mode crystals with on-die linear load capacitors (6–30 pF, 0.375 pF step), programmable drive strength, and optional bypass for driven clock inputs up to 166 MHz. Frequency selection uses three LVTTL inputs (S0/S1/S2) enabling eight glitch-free configurations across PLL1, CLKA, and CLKB divider registers.

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

CY22392ZXC-398T has two verified drop-in alternatives with documented compatibility and known trade-offs:

Compared with Si5338A-D-GM and CY22393ZXC-398T, CY22392ZXC-398T uniquely balances hardware-based frequency agility (via S0/S1/S2), nonvolatile flash configuration, and proven field reliability in industrial timing applications - making it optimal where deterministic, pin-controlled reconfiguration and zero-software-dependency are mandatory.

Availability

CY22392ZXC-398T is available at Aetrix Electronics and suitable for industrial PLC timing, high-speed ADC/DAC interface, and consumer set-top box designs requiring stable component supply, long-term lifecycle support, and guaranteed flash-programmable configuration integrity.

Supply support for CY22392ZXC-398T 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, with design centers in San Jose, CA and global manufacturing partnerships.

The CY22392 belongs to Cypress's CyberClocks™ family of flash-programmable clock generators, engineered specifically for flexible, multi-frequency timing synthesis in cost-sensitive, high-reliability embedded systems where field configurability and crystal stability are critical.

FAQ

What is the maximum crystal frequency supported by CY22392ZXC-398T?

The device supports crystal inputs from 8 MHz to 30 MHz in fundamental-mode operation. For driven clock inputs (i.e., external oscillator), the maximum frequency is 166 MHz in commercial temperature range and 150 MHz in industrial range. XTALOUT must be left floating when using driven inputs, and crystal load capacitors are automatically bypassed.

Can CY22392ZXC-398T generate three completely independent frequencies simultaneously?

Yes - its three independent PLLs (PLL1, PLL2, PLL3), each with unique 11-bit P and 8-bit Q dividers, can synthesize three distinct frequencies from the same reference. These frequencies are routed through the 4×4 crosspoint switch to CLKA–CLKD, while CLKE is derived solely from PLL1, enabling up to four independent output frequencies.

How does the S0/S1/S2 pin configuration affect output behavior?

S0, S1, and S2 are LVTTL inputs that select among eight pre-programmed configurations. They control either PLL1's P/Q values or CLKA/CLKB's 7-bit post-divider register selection (Register 0 or Register 1). All transitions are guaranteed glitch-free, and the selected configuration takes effect within one reference cycle without disrupting ongoing clock outputs.

Is CY22392ZXC-398T pin-compatible with earlier CY2292 devices?

Yes - CY22392ZXC-398T is a functional upgrade to the CY2292 family and maintains identical 16-pin TSSOP/SOIC pinout and signal mapping. However, it adds wider P/Q dividers, improved crystal drive, on-die load capacitors, and enhanced jitter performance - allowing direct replacement with no PCB changes, though firmware reprogramming is required for full feature utilization.