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Infineon Technologies CY22393FXIT
- Part No.:
- CY22393FXIT
- Manufacturer:
- Infineon Technologies
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
CY22393FXIT.pdf
- Description:
- IC CLOCK GENERATOR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,767
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Product details
Overview
CY22393FXIT from Infineon Technologies (formerly Cypress) is a three-PLL, serial- and flash-programmable clock generator in 16-pin TSSOP package. It delivers up to six CMOS clock outputs (CLKA–CLKC, CLKD, CLKE, and configurable crosspoint routing), supports 8–30 MHz crystal input, generates output frequencies from 1 MHz to 166 MHz, and features ultra-wide P/Q/post-dividers (11-bit P, 8-bit Q, 7-bit post-divide) for precise frequency synthesis in industrial-grade timing applications.
For engineers reviewing the CY22393FXIT datasheet, CY22393FXIT pinout, CY22393FXIT application, or CY22393FXIT equivalent, this device offers field-programmable PLLs with glitch-free S2-controlled frequency switching, on-die linear crystal load capacitors (6–30 pF, 0.375 pF step), dual register sets for CLKA/CLKB, and CyClocksRT™ software support - critical for embedded system clock tree validation and multi-frequency SoC synchronization.
Technical Context
The CY22393FXIT implements three independent, fully programmable PLLs: PLL1 feeds CLKE via /2–/4 synchronous post-divider and routes to crosspoint switch; PLL2 and PLL3 feed only the 4×4 crosspoint switch, enabling flexible assignment of up to four independent frequencies across six output pins. All PLLs use identical 11-bit P and 8-bit Q dividers with programmable loop filter bandwidth (3-bit LF).
Crystal oscillator drive strength is configurable via OscDrv[1:0], and on-die linear crystal load capacitors (OscCap[5:0]) provide 6–30 pF range in 0.375 pF steps - eliminating external caps and minimizing frequency drift across temperature, supply, and bias. The device supports both crystal and driven reference inputs (up to 166 MHz), with XTALOUT floating when using driven clocks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PLL count | Three independent, serial-programmable PLLs for multi-frequency synthesis |
| Input frequency range | 8–30 MHz crystal or 1–166 MHz driven reference clock |
| Output frequency range | 1–166 MHz CMOS outputs; CLKE supports /2, /3, or /4 post-division |
| Divider resolution | 11-bit P (feedback), 8-bit Q (reference), 7-bit post-divide for fine-grained tuning |
| Crystal load capacitance | 6–30 pF programmable in 0.375 pF steps via on-die linear capacitors |
| Operating temperature | −40°C to +85°C (industrial grade) |
| Supply voltage | 3.3 V ±10% for VDD/AVDD; LVDD = 3.3 V (not 2.5 V - distinct from CY22395) |
Pinout & Package
Package: 16-pin TSSOP (JEDEC MO-153, 4.4 mm × 5.0 mm, 0.65 mm pitch), RoHS-compliant, NiPdAu lead finish (CY22393FXIT is CY223931_I variant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| XTALIN (Pin 4) | Clock reference input | Accepts parallel-resonant fundamental-mode crystal (8–30 MHz) or driven clock (1–166 MHz); internal oscillator inverter with programmable drive strength |
| XTALOUT (Pin 5) | Clock reference feedback | Crystal output node; must be connected to crystal; left floating for driven-clock mode |
| CLKA–CLKC (Pins 10, 9, 1) | Configurable CMOS clock outputs | Each assigned via 4×4 crosspoint switch; CLKA/CLKB support dual-register 7-bit dividers for glitch-free S2-switched frequency pairs |
| CLKD (Pin 7) | Configurable CMOS clock output | Routed through crosspoint switch; not available on CY22393/CY223931 per pinout - but CY22393FXIT is CY223931_I, so CLKD = N/A; Pin 7 = GND/LGND |
| CLKE (Pin 8) | CMOS clock output with post-division | Driven by PLL1 output; selectable /2, /3, or /4 synchronous divider; dedicated output path (not crosspoint-routed) |
| SDAT (S0) (Pin 12) | Serial data I/O | Two-wire interface (with SCLK) for in-system programming; S0 value latched at power-up for frequency table indexing |
| SCLK (S1) (Pin 13) | Serial clock input | Two-wire interface clock; S1 value latched at power-up for frequency table indexing |
| S2/SUSPEND (Pin 15) | Frequency select / suspend control | Configurable as bit-2 index into 8-row frequency table (with S0/S1) or suspend mode enable; glitch-free divider switching guaranteed |
| SHUTDOWN/OE (Pin 16) | Output enable / power-down | Active-low: tristates all outputs and shuts down PLLs when asserted; configurable to tristate only (no shutdown) |
Key Features
| Feature | Design Value |
|---|---|
| Three independent PLLs | Enables simultaneous generation of up to four distinct frequencies for multi-domain SoC clocking without external synthesizers |
| On-die linear crystal load capacitors | 6–30 pF range in 0.375 pF steps eliminates external capacitors and reduces frequency drift vs. temperature/supply/bias |
| Dual-register 7-bit dividers for CLKA/CLKB | Supports two pre-programmed frequency settings per clock; S2 toggling selects between them with guaranteed glitch-free transition |
| Flash programmability with CyClocksRT™ | Enables field updates of PLL configurations, divider values, and crystal drive settings without hardware change or re-spin |
| Configurable crystal drive strength | OscDrv[1:0] allows optimization for diverse crystal ESR and motional resistance, improving startup reliability and aging stability |
Applications
| Industrial PLC Timing | Multi-Core MCU Clock Distribution |
|---|---|
|
Use Scenario: Programmable logic controller requiring synchronized 25 MHz CPU clock, 50 MHz peripheral bus clock, and 100 MHz Ethernet PHY clock from single crystal source. IC Role / Device Role / Timing Role: Central clock generator providing three independent, jitter-optimized frequencies via dedicated PLLs and crosspoint routing. Use Value: Eliminates need for multiple discrete oscillators or complex clock trees; enables single-crystal design with <±50 ppm accuracy over −40°C to +85°C. |
Use Scenario: ARM Cortex-A/R-based industrial gateway with separate cores, DDR interface, and PCIe controller needing phase-aligned, scalable clocks. IC Role / Device Role / Timing Role: Configurable clock source delivering 400 MHz core clock (PLL1), 200 MHz DDR clock (PLL2 + /2), and 100 MHz PCIe REFCLK (PLL3). Use Value: On-chip /2, /3, /4 post-divider on CLKE and 7-bit dividers on CLKA/CLKB allow exact frequency matching without external dividers or jitter-inducing buffers. |
| Medical Imaging Data Acquisition | Test & Measurement Instrumentation |
|
Use Scenario: Ultrasound front-end requiring low-jitter 40 MHz sampling clock and 80 MHz ADC clock derived from same 10 MHz TCXO reference. IC Role / Device Role / Timing Role: Precision clock synthesizer generating harmonically related outputs with minimized inter-channel skew and sub-ps integrated jitter. Use Value: Ultra-wide P/Q dividers (11-bit P, 8-bit Q) enable exact integer ratios (e.g., 4× and 8× multiplication) without fractional-N artifacts or spurs. |
Use Scenario: Automated test equipment needing user-selectable clock rates (10 MHz, 25 MHz, 100 MHz) for stimulus generation and response capture. IC Role / Device Role / Timing Role: Field-programmable clock source supporting real-time frequency switching via S0/S1/S2 GPIOs without firmware intervention. Use Value: Eight-row frequency table indexed by S0/S1/S2 allows hardware-triggered clock changes - critical for deterministic timing in production test sequences. |
Equivalent & Alternatives
CY22393FXIT is part of the CY22393 family; alternatives include CY22393_I (same functionality, standard lead finish) and CY22394_I (adds LVPECL output, higher-frequency PECL support).
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY22393_I | Identical PLL architecture, pinout, and feature set; differs only in lead finish (SnPb vs. NiPdAu) and absence of "FXIT" suffix denoting tape-and-reel industrial temp packaging | No PECL output; CMOS-only; max 166 MHz outputs; no high-speed differential capability | Select when RoHS exemption applies or cost sensitivity outweighs long-term reliability requirements in harsh environments |
| CY22394_I | Adds one LVPECL output (P+CLK/P−CLK) with 125–375 MHz range; retains same three PLLs, crosspoint, and S0/S1/S2 control; requires external 50 Ω termination | Required for SerDes, Gigabit Ethernet PHY, or FPGA transceiver reference clocks demanding differential signaling | Select when system-level signal integrity mandates LVPECL or when >166 MHz CMOS outputs are insufficient |
Compared with CY22393_I, CY22393FXIT provides enhanced long-term solderability and corrosion resistance via NiPdAu finish, while CY22394_I adds differential output capability at the cost of increased layout complexity and power - making CY22393FXIT optimal for robust, high-reliability industrial CMOS clock distribution.
Availability
CY22393FXIT is available at Aetrix Electronics and suitable for industrial PLC timing, multi-core MCU clock distribution, medical imaging data acquisition, and test & measurement instrumentation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for CY22393FXIT 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
Infineon Technologies acquired Cypress Semiconductor in 2020 and maintains full product continuity, documentation, and support for the former Cypress clock portfolio including the CY2239x family.
The CY22393 series was designed specifically for industrial and embedded systems requiring field-upgradable, multi-frequency clock generation from a single crystal - emphasizing configurability, thermal stability, and long-term supply assurance over consumer-grade timing devices.
FAQ
What is the maximum output frequency supported by CY22393FXIT?
CY22393FXIT supports up to 166 MHz on all CMOS outputs (CLKA–CLKC, CLKD, CLKE) when operating in industrial temperature range (−40°C to +85°C). This limit is specified in the datasheet's "Operating Conditions" table and confirmed by electrical characteristics testing under worst-case VDD and temperature conditions. Output rise/fall times and jitter remain within spec up to this frequency.
Does CY22393FXIT support both crystal and external clock inputs?
Yes. CY22393FXIT accepts either an 8–30 MHz parallel-resonant fundamental-mode crystal connected between XTALIN and XTALOUT, or a 1–166 MHz single-ended CMOS clock applied to XTALIN with XTALOUT left unconnected. The internal oscillator inverter is disabled in driven-clock mode, and on-die load capacitors are bypassed automatically.
How does the S2/SUSPEND pin function in frequency selection mode?
In frequency selection mode, S2 acts as bit-2 of a 3-bit index (S0/S1/S2) into an eight-row frequency table stored in configuration memory. Each row defines unique P/Q values for PLL1 and divider selections for CLKA/CLKB. Switching S2 triggers a glitch-free transition between the two associated rows - verified in the "Dynamic Updates" section of the datasheet with no clock interruption or metastability.
Is CyClocksRT™ software required to program CY22393FXIT?
No - CyClocksRT™ is optional but strongly recommended. The device supports in-system programming via its two-wire serial interface (SDAT/SCLK) using any microcontroller or FPGA with GPIOs and appropriate firmware. However, CyClocksRT™ provides GUI-based configuration, automatic constraint checking, register map visualization, and flash image generation - significantly reducing development time and risk of misconfiguration.
CY22393FXIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Verified
- Type:
- Clock Generator, Fanout Distribution
- PLL:
- Yes with Bypass
- Input:
- LVTTL, Crystal
- Output:
- CMOS
- Number of Circuits:
- 1
- Ratio - Input:Output:
- 1:6
- Differential - Input:Output:
- No/No
- Frequency - Max:
- 166MHz
- Divider/Multiplier:
- Yes/No
- Voltage - Supply:
- 3.135V ~ 3.465V
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 16-TSSOP
CY22393FXIT FAQ
1.How can I place an order for CY22393FXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY22393FXIT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CY22393FXIT reliable?
The price and inventory of CY22393FXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY22393FXIT is usually 5 days.
3.What payment methods are accepted for CY22393FXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY22393FXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY22393FXIT?
CY22393FXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY22393FXIT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CY22393FXIT?
For technical support, including CY22393FXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY22393FXIT requirements.
6.How does Aetrix verify that CY22393FXIT is sourced from the original manufacturer or authorized distributors?
All CY22393FXIT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CY22393FXIT meets industry standards.
7.What is the process for return or replacement of CY22393FXIT?
All CY22393FXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY22393FXIT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CY22393FXIT part is unused and in its original packaging.
Return procedure for CY22393FXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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