Infineon Technologies CY27410LTXI-008

Overview

CY27410LTXI-008 from Infineon Technologies (formerly Cypress) is a 4-PLL spread-spectrum clock generator with zero-ppm synthesis error, supporting PCIe 3.0, USB 3.0, and 10GbE timing requirements. It delivers up to 12 outputs (8 differential + 4 single-ended), RMS phase jitter ≤1 ps (12 kHz–20 MHz), and configurable VCXO ±120 ppm tuning via VIN pin - used in high-speed serial interface clocking for industrial networking and embedded computing.

For engineers reviewing the CY27410LTXI-008 datasheet, CY27410LTXI-008 pinout, CY27410LTXI-008 application, or CY27410LTXI-008 equivalent, key selection criteria include differential output skew ≤100 ps per bank, I²C-programmable register sets for on-the-fly frequency switching, spread-spectrum profiles (0.1%–5%, down/center), and dual-bank output configuration with independent PLL sourcing.

Technical Context

The CY27410LTXI-008 integrates four independent fractional-N PLLs, each feeding four synchronized dividers to generate phase-aligned outputs with minimal inter-output skew. Each PLL supports VCXO control (±120 ppm, 0.23 ppm steps) and spread-spectrum modulation (Logic SS or Lexmark profile).

Input flexibility includes crystal (8–48 MHz), LVCMOS reference (8–250 MHz), or differential reference (8–700 MHz); outputs support LVDS/LVPECL/HCSL/CML (25–700 MHz) and LVCMOS (3 MHz–250 MHz plus one 1 kHz–8 MHz low-frequency output). Two output banks (Bank 1: OUT11–OUT16; Bank 2: OUT21–OUT26) enable mixed differential/single-ended routing with programmable delay (0–4 × VCO/2 cycles).

Key Specifications

Pinout & Package

Package: 48-pin QFN (7 mm × 7 mm × 1.0 mm, exposed thermal pad), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

Two verified alternatives exist for design flexibility and supply continuity:

Compared with Si5341-B-GM and ICS8430I-01T, CY27410LTXI-008 uniquely balances VCXO tunability, on-the-fly I²C reprogramming, and dual-bank spread-spectrum control - making it optimal for mid-tier industrial and consumer platforms requiring both flexibility and EMI compliance without over-engineering.

Availability

CY27410LTXI-008 is available at Aetrix Electronics and suitable for PCIe Gen3 server backplanes, USB 3.0 industrial gateways, and 10GbE telecom line cards requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across temperature and voltage.

Supply support for CY27410LTXI-008 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, technical support, and documentation for the former Cypress clock portfolio.

The CY27410 belongs to Infineon's programmable clock generator product line, designed specifically for cost-sensitive, high-volume applications in industrial automation, consumer electronics, and entry-level networking where flexible frequency synthesis and EMI mitigation are required without premium jitter performance.

FAQ

What is the maximum differential output frequency supported by CY27410LTXI-008?

The CY27410LTXI-008 supports differential output frequencies up to 700 MHz using LVDS, LVPECL, HCSL, or CML signaling. This capability is validated per AC Output Specifications in Rev. *M datasheet (p.16), with guaranteed operation across industrial temperature range (–40°C to +85°C) and specified load conditions (e.g., 50 Ω termination for LVDS).

Does CY27410LTXI-008 support spread-spectrum clocking on individual outputs or only globally?

Spread-spectrum is applied globally per output bank: all outputs sourced from Bank 1 (PLL1/PLL2) share one spread profile, and all outputs from Bank 2 (PLL3/PLL4) share another. The datasheet confirms this in "Functional Features" (p.5) and "Spread-Spectrum Capability" (p.1), with no provision for per-output SS enable/disable.

Can the CY27410LTXI-008 operate without an external crystal?

Yes - the device accepts single-ended or differential reference clocks (8–250 MHz LVCMOS or 8–700 MHz differential) on IN1/IN2 pins. Crystal (XIN/XOUT) is optional; if omitted, the internal oscillator is disabled and reference clock must be supplied externally.

Is the VIN pin on CY27410LTXI-008 compatible with standard DAC output voltages?

Yes - VIN accepts 0 V to VDD (1.8/2.5/3.3 V) analog control voltage with 12-bit effective resolution (0.23 ppm step size). It interfaces directly with standard 12-bit DACs (e.g., MCP4725) without level-shifting, as confirmed in "VCXO Input Block" section (p.3) and electrical specs (p.14).