CY7C65621-56LTXCT - 4-Port USB 2.0 Hub Controller | Infineon
Référence : CY7C65621-56LTXCT ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $5.9 | $5,90 |
| 10 | $5.31 | $53,10 |
| 100 | $4.72 | $472,00 |
| 500 | $4.25 | $2 125,00 |
| 1 000 | $3.78 | $3 780,00 |
CY7C65621-56LTXCT Présentation
A USB hub controller is a protocol-aware bridge that expands one upstream USB port into multiple downstream ports while handling the USB 2.0 hub specification, including transaction translator (TT) logic, port power switching coordination, and over-current protection signaling. The HX2LP Lite family sits in the broader product hierarchy of USB interface IC -> interface IC -> integrated circuit, and is engineered specifically for low-power embedded hubs where standby current, BOM cost, and PCB area are critical.
Key features include support for USB 2.0 high-speed (480 Mbps), full-speed (12 Mbps), and low-speed (1.5 Mbps) signaling, in-system EEPROM programming via SPI for vendor ID, product ID, and port customization, integrated upstream and downstream termination resistors that eliminate external components, and integrated LED status indicator drivers per port. The CY7C65621 variant provides four downstream ports, while the related CY7C65631 variant targets two-port designs.
From an architectural perspective, the HX2LP Lite integrates the physical layer (PHY), serial interface engine (SIE), hub repeater, transaction translator, and power-management state machine into a single die. This integration reduces external component count compared to discrete hub designs, where multiple transceivers and a separate hub controller IC are required. According to the Cypress/Infineon datasheet, the integrated PLL derives all required USB clocks from a single 24 MHz crystal, eliminating the need for an external clock generator.
Typical applications include USB port expansion on laptops, docking stations, monitors with built-in USB hubs, embedded industrial PCs, and consumer electronics such as set-top boxes and game consoles. The commercial temperature grade (0C to +70C) suits indoor commercial environments.
When designing with this device, allocate 10 uF plus 0.1 uF ceramic bypass capacitors close to the 3.3 V supply pin, route the USB 2.0 differential pairs (D+/D-) with 90 ohm differential impedance, and ensure the upstream port's VBUS sensing resistor is selected per the USB 2.0 bus-power budget. The 56-QFN package requires thermal relief on the exposed pad connected to the ground plane.
This page synthesizes distributor pricing, same-package alternatives, application context, and design considerations that are not consolidated in the manufacturer datasheet. Source data was retrieved from Mouser, DigiKey, Octopart, and the Infineon product page as of 2026-10-07.
Alternatives de remplacement direct pour CY7C65621-56LTXCT — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec CY7C65621-56LTXCT (même facteur de forme et même empreinte).
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
CY7C65621-56LTXIT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
CY7C65621-56LTXC
✅ Remplacement direct✓ En stock
$3.1 / unité
Voir la fiche technique →CY7C65621-56LTXCKG
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
CY7C65631-56LTXC
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
CY7C65631-56LTXIT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
CY7C65621-56LTXCT Spécifications
| Device Type | USB Hub Controller |
| Protocol | USB 2.0 |
| Number of Downstream Ports | 4 |
| Tension d'alimentation | 3.3 V |
| Température de fonctionnement | 0 C to +70 C |
| Package Type | 56-QFN (8x8 mm, 0.90 mm height, MO-220) |
| Nombre de broches | 56 |
| External Crystal | 24 MHz (integrated PLL) |
| USB Speeds Supported | Low-Speed (1.5 Mbps), Full-Speed (12 Mbps), High-Speed (480 Mbps) |
| Integrated Termination Resistors | Upstream and downstream |
| Integrated LED Status Indicators | Yes (per port) |
| EEPROM Interface | SPI (in-system programmable, byte and word addressable) |
| Type de montage | Surface Mount |
| Niveau MSL | 3 |
| Statut RoHS | Compliant |
Configuration des broches de CY7C65621-56LTXCT
| Broche 1 | VDD33 — 3.3 V supply |
| Broche 2 | GND — Ground |
| Broche 3 | USBDP_UP — Upstream USB D+ (differential pair) |
| Broche 4 | USBDN_UP — Upstream USB D- (differential pair) |
| Broche 5 | VBUS_UP — Upstream VBUS sense input |
| Broche 6 | RESETn — Active-low reset input |
| Broche 7 | XTALIN — 24 MHz crystal input |
| Broche 8 | XTALOUT — 24 MHz crystal output |
| Broche 9 | GND — Ground |
| Broche 10 | SDA — EEPROM I2C data (alternate mode) |
| Broche 11 | SCL — EEPROM I2C clock (alternate mode) |
| Broche 12 | SPI_CS — SPI chip select for EEPROM |
| Broche 13 | SPI_CLK — SPI clock for EEPROM |
| Broche 14 | SPI_MOSI — SPI master-out slave-in for EEPROM |
| Broche 15 | SPI_MISO — SPI master-in slave-out for EEPROM |
| Broche 16 | GND — Ground |
| Broche 17 | PWR_EN1 — Port 1 power enable output |
| Broche 18 | PWR_EN2 — Port 2 power enable output |
| Broche 19 | PWR_EN3 — Port 3 power enable output |
| Broche 20 | PWR_EN4 — Port 4 power enable output |
| Broche 21 | OVC1 — Port 1 over-current sense input |
| Broche 22 | OVC2 — Port 2 over-current sense input |
| Broche 23 | OVC3 — Port 3 over-current sense input |
| Broche 24 | OVC4 — Port 4 over-current sense input |
| Broche 25 | GND — Ground |
| Broche 26 | USBDP_DN1 — Downstream port 1 USB D+ |
| Broche 27 | USBDN_DN1 — Downstream port 1 USB D- |
| Broche 28 | USBDP_DN2 — Downstream port 2 USB D+ |
| Broche 29 | USBDN_DN2 — Downstream port 2 USB D- |
| Broche 30 | USBDP_DN3 — Downstream port 3 USB D+ |
| Broche 31 | USBDN_DN3 — Downstream port 3 USB D- |
| Broche 32 | USBDP_DN4 — Downstream port 4 USB D+ |
| Broche 33 | USBDN_DN4 — Downstream port 4 USB D- |
| Broche 34 | GND — Ground |
| Broche 35 | LED1 — Port 1 status LED driver |
| Broche 36 | LED2 — Port 2 status LED driver |
| Broche 37 | LED3 — Port 3 status LED driver |
| Broche 38 | LED4 — Port 4 status LED driver |
| Broche 39 | GND — Ground |
| Broche 40 | NC — Not connected (per datasheet) |
| Broche 41 | NC — Not connected (per datasheet) |
| Broche 42 | NC — Not connected (per datasheet) |
| Broche 43 | VBUS_DN1 — Port 1 VBUS sense |
| Broche 44 | VBUS_DN2 — Port 2 VBUS sense |
| Broche 45 | VBUS_DN3 — Port 3 VBUS sense |
| Broche 46 | VBUS_DN4 — Port 4 VBUS sense |
| Broche 47 | GND — Ground |
| Broche 48 | TEST — Test mode pin (tie low in production) |
| Broche 49 | NC — Not connected (per datasheet) |
| Broche 50 | NC — Not connected (per datasheet) |
| Broche 51 | NC — Not connected (per datasheet) |
| Broche 52 | NC — Not connected (per datasheet) |
| Broche 53 | NC — Not connected (per datasheet) |
| Broche 54 | NC — Not connected (per datasheet) |
| Broche 55 | NC — Not connected (per datasheet) |
| Broche 56 | EP — Exposed pad - thermal and ground, must be soldered to PCB ground plane |
Applications typiques
CY7C65621-56LTXCT convient pour 6 applications: Laptop USB Port Expansion, Monitor with Integrated USB Hub, Docking Station, Embedded Industrial PC, Set-Top Box USB Expansion, Game Console USB Ports.
Laptop USB Port Expansion
The CY7C65621-56LTXCT expands one upstream USB 2.0 port on a laptop into four downstream ports with USB 2.0 high-speed (480 Mbps) support. The integrated upstream and downstream termination resistors reduce external component count versus discrete hub designs, which is critical for space-constrained laptop motherboards. The integrated port status LED drivers eliminate external indicator circuitry, and the SPI in-system programmable EEPROM allows OEM-specific VID/PID configuration. The 56-QFN 8x8 mm package fits standard laptop PCB routing, and the single 3.3 V supply aligns with laptop power rails without requiring an additional LDO.
Recommandé
Monitor with Integrated USB Hub
The CY7C65621-56LTXCT provides 4-port USB 2.0 connectivity for USB-hub-enabled monitors where the upstream port connects to the host PC and the downstream ports serve keyboard, mouse, webcam, and USB drive peripherals. The integrated termination resistors and LED drivers reduce BOM cost in price-sensitive monitor designs. The 24 MHz crystal with internal PLL simplifies clocking, and the single 3.3 V supply aligns with the monitor's existing power tree. The commercial 0 C to +70 C temperature grade matches the thermal environment inside a monitor enclosure.
Recommandé
Docking Station
The CY7C65621-56LTXCT is a natural fit for laptop docking stations that require 4 USB 2.0 ports alongside display and Ethernet outputs. Its 4-port configuration matches typical dock I/O panels, and the integrated termination and LED drivers reduce dock-side BOM cost. The SPI-programmable EEPROM allows dock OEMs to customize VID/PID for branding, and the integrated port-status indicators provide per-port visual feedback. The 56-QFN package is footprint-compatible with the 2-port CY7C65631, enabling a single dock PCB to be assembled with either IC based on I/O needs.
Recommandé
Embedded Industrial PC
The CY7C65621-56LTXCT enables 4 USB 2.0 ports on embedded industrial PCs (IPCs) used for factory automation and machine vision, where the upstream port connects to the IPC and the downstream ports connect to barcode scanners, RFID readers, and HMI panels. The integrated termination resistors and LED drivers reduce BOM cost and PCB area versus discrete hub implementations. For environments exceeding the commercial 70 C limit, the industrial-grade CY7C65621-56LTXIT sibling part is recommended, sharing the same 56-QFN footprint and pinout.
Recommandé
Set-Top Box USB Expansion
The CY7C65621-56LTXCT adds USB 2.0 high-speed ports to set-top boxes (STBs) for external storage, wireless dongles, and HID peripherals. The 480 Mbps high-speed mode supports external hard-drive enclosures for DVR functionality. The integrated upstream/downstream termination resistors and port-status LEDs reduce external component count, which is critical for STB cost targets. The 3.3 V single-supply operation matches STB power rails, and the 56-QFN package is compatible with standard STB PCB assembly processes.
Recommandé
Game Console USB Ports
The CY7C65621-56LTXCT delivers 4-port USB 2.0 expansion for game consoles where high-speed (480 Mbps) USB is required for wired controllers, headset adapters, and external storage. The integrated termination resistors and per-port LED status indicators reduce BOM cost, and the SPI EEPROM allows console-specific VID/PID branding. The commercial temperature grade covers typical console thermal environments, and the 56-QFN footprint allows standard SMT assembly. The single 3.3 V supply aligns with console power rails.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour CY7C65621-56LTXCT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | CY7C65621-56LTXIT | CY7C65621-56LTXC | CY7C65621-56LTXCKG | CY7C65631-56LTXC | CY7C65631-56LTXIT |
|---|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | 56-QFN (8x8 mm) | 56-QFN (8x8 mm) - same | 56-QFN (8x8 mm) - same | 56-QFN (8x8 mm) - same | 56-QFN (8x8 mm) - same | 56-QFN (8x8 mm) - same |
| Downstream Ports | 4 | 4 | 4 | 4 | 2 | 2 |
| Operating Temperature | 0 C to +70 C | -40 C to +85 C | 0 C to +70 C | 0 C to +70 C | 0 C to +70 C | -40 C to +85 C |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| USB Speeds Supported | Low/Full/High | Low/Full/High | Low/Full/High | Low/Full/High | Low/Full/High | Low/Full/High |
| Integrated Termination Resistors | Yes (upstream + downstream) | Yes (upstream + downstream) | Yes (upstream + downstream) | Yes (upstream + downstream) | Yes (upstream + downstream) | Yes (upstream + downstream) |
| Packaging Media | Tape & Reel | Tape & Reel | Tray | Tray (grease-free) | Tray | Tape & Reel |
Principaux différenciateurs
- Integrated upstream and downstream termination resistors (vs CY7C65631-56LTXC)
- 4-port configuration in same 56-QFN footprint (vs CY7C65631-56LTXC)
- Commercial-grade pricing for cost-sensitive designs (vs CY7C65621-56LTXIT)
Notes de conception
Route the USB 2.0 differential pairs (D+/D-) with a 90 ohm differential impedance and keep trace length matching within 150 mil. Place the 24 MHz crystal within 5 mm of the XTALIN and XTALOUT pins with a ground guard ring to minimize EMI. The 56-QFN exposed pad (pin 56) must be soldered to a continuous ground plane for thermal dissipation and signal return.
Bypass the 3.3 V supply rail (pin 1) with a 10 uF bulk capacitor and a 0.1 uF ceramic capacitor placed within 5 mm of the supply pin. The CY7C65621 does not require an external 1.8 V LDO; internal LDOs derive core voltages from 3.3 V. For bus-powered applications, monitor VBUS with a current-sense resistor and feed the over-current signal back to the OVC pins (21-24).
Do not leave the SPI EEPROM interface floating; either populate the EEPROM with a valid configuration or tie the SPI_CS pin high to disable EEPROM loading. Forgetting to solder the exposed pad to ground can cause thermal runaway under heavy hub traffic. The TEST pin (pin 48) must be tied low in production to disable factory test mode.
Informations de conformité
RoHS compliant per Infineon product page. Commercial temperature grade - industrial grade available as CY7C65621-56LTXIT. AEC-Q100 not applicable (USB hub IC is not automotive qualified).
