CY7C65640A-LTXCT USB 2.0 Hub Controller | Infineon
MPN: CY7C65640A-LTXCT ✗ End of LifeCY7C65640A-LTXCT Overview
A USB hub controller is an interface IC within the broader USB interface-controller and semiconductor hierarchy. Its primary role is to coordinate data traffic between one upstream USB connection and downstream USB ports, while adding hub-specific signaling, port management, and integrated termination functions. The CY7C65640A family is associated with the Cypress TetraHub high-speed USB hub controller product line and includes features such as integrated upstream and downstream termination resistors, integrated PLL operation with a 24 MHz crystal, port-status indicator control, and in-system EEPROM programming.
The verified data identifies the target as a USB 2.0 hub controller with a 56-QFN package measuring 8 x 8 mm and approximately 0.90 mm in height. The MO-220 package designation and 56-pin count are important for PCB footprint matching. The integrated termination resistors can simplify board design by reducing external component count on USB differential pairs, while the integrated PLL supports clocking from an external 24 MHz crystal.
Typical applications include USB hubs in computers, peripherals, docking systems, industrial equipment, and other USB expansion products. The controller is suitable where an upstream USB host connection must be distributed across multiple downstream ports. Designers should confirm the complete electrical characteristics, pin assignments, port configuration, clock requirements, and power-distribution limits in the manufacturer datasheet before finalizing a new PCB or using the part as an obsolete-board replacement.
The most important practical consideration is lifecycle management: the cross-reference information identifies CY7C65640A-LTXCT as obsolete, and the verified comparison data also reports the related CY7C65640A-LTXC as obsolete. Existing equipment may require a qualified cross-reference rather than an unverified substitution. This page distinguishes confirmed web-data facts from parameters that require datasheet verification and highlights the engineering value of comparing package, protocol, temperature, and availability information before procurement.
For replacement planning, the verified Infineon community information identifies CY7C65630-56LTXC as appearing to have the same pinout and functionality, but it does not provide a formal manufacturer replacement table. CY7C65630-56LTXC is therefore treated as a qualified drop-in candidate requiring device-specific verification, while other same-family package references are not padded into the alternatives list.
Drop-in alternatives for CY7C65640A-LTXCT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with CY7C65640A-LTXCT (same form factor and footprint) — differing in Product Type, Supply Voltage, Device Type, Number of Pins, Operating Temperature.
CY7C65630-56LTXC
✅ Drop-InContact for price
View Datasheet →CY7C65640A-LTXCT Specifications
| Device Type | USB 2.0 hub controller |
| Interface Type | USB interface controller |
| Supply Voltage | 3.3 V |
| Operating Temperature | 0 C to 70 C |
| Package Type | 56-QFN |
| Package Dimensions | 8 x 8 mm |
| Package Height | 0.90 mm |
| Package Outline | MO-220 |
| Number of Pins | 56 |
| Mounting Type | Surface mount |
| Upstream Termination | Integrated |
| Downstream Termination | Integrated |
| Port Status Indicator Control | Integrated |
| Reference Clock | 24 MHz external crystal |
| PLL | Integrated |
| In-System EEPROM Programming | Supported |
CY7C65640A-LTXCT mo-220 Pin Configuration Guide
Pin configuration for CY7C65640A-LTXCT (mo-220 package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for CY7C65640A-LTXCT.
Refer to the datasheet for full pin configuration.
Typical Applications
CY7C65640A-LTXCT is suitable for 6 applications: Computer USB Expansion Hub, Industrial USB Interface Hub, Docking Station USB Ports, USB Test and Measurement Hub, Embedded USB Peripheral Hub, Legacy USB Peripheral Adapter.
Computer USB Expansion Hub
The CY7C65640A-LTXCT fits a computer peripheral hub that connects one upstream USB 2.0 host port to multiple downstream devices. Its integrated upstream and downstream termination resistors reduce the external matching-component burden on USB differential lines, while the integrated PLL works with a 24 MHz external crystal. The 56-QFN 8 x 8 mm package supports compact desktop and docking products. Designers should confirm port-current budgets, enumeration behavior, and the obsolete lifecycle status before committing to new production inventory.
Recommended
Industrial USB Interface Hub
The CY7C65640A-LTXCT can support a room-temperature industrial USB interface hub where a control system must distribute peripheral connections from a single upstream port. Integrated USB termination resistors can shorten the analog implementation of each downstream pair, while the 3.3 V supply and 0 C to 70 C rating suit controlled commercial-temperature equipment. For machinery with wider ambient requirements, verify the full datasheet limits and qualification records because no industrial or automotive-grade status is confirmed in the supplied data.
Recommended
Docking Station USB Ports
A docking station can use the CY7C65640A-LTXCT to manage multiple USB peripherals through one upstream connection to a host computer. The controller's integrated termination resistors, port-status indicator control, and in-system EEPROM programming support a repeatable hub implementation within a compact 56-QFN footprint. The obsolete status means existing dock designs may benefit from exact-stock recovery, but new platforms should assess supported controllers and verify enumeration, suspend, resume, and hot-plug behavior before board release.
Recommended
USB Test and Measurement Hub
The CY7C65640A-LTXCT can serve in a USB hub used to connect multiple test instruments or peripheral adapters to a measurement computer. Centralized port-status control and integrated D+ and D- termination help implement repeatable USB routing, while the external 24 MHz crystal and integrated PLL provide the hub timing reference. Because the controller is obsolete, instrument makers should verify legacy board compatibility and consider a redesign around a supported hub IC if long-term procurement is required.
Recommended
Embedded USB Peripheral Hub
An embedded appliance can use the CY7C65640A-LTXCT to provide multiple USB connections from a compact embedded host or processor. The 8 x 8 mm 56-QFN package limits board area, and integrated termination resistors reduce passive component count around the USB buses. In-system EEPROM programming may assist configuration workflows where supported by the system design. Engineers must verify clock startup, port-power sequencing, over-current handling, and the exact obsolete-part supply risk before using the controller in an embedded product.
Recommended
Legacy USB Peripheral Adapter
The CY7C65640A-LTXCT is appropriate for repairing or extending a legacy USB peripheral adapter that uses the same 56-QFN controller and exact electrical configuration. Its integrated termination resistors and 24 MHz clock interface reproduce established hub behavior, which can make exact-part sourcing safer than changing the controller and validating every signal. Because availability is tied to obsolete inventory, procurement should include date-code inspection, traceable sourcing, and functional testing of upstream enumeration and downstream port operation.
Recommended
Recommended Products Summary
Engineering reference data for CY7C65640A-LTXCT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | CY7C65630-56LTXC |
|---|---|---|
| Package | 56-QFN, 8 x 8 mm, MO-220 | 56-QFN, 8 x 8 mm |
| Brand | Infineon Technologies | Infineon Technologies |
| Device Function | USB 2.0 hub controller | USB hub controller |
| Pin Compatibility | Reference footprint | Same pinout and apparent functionality reported by Infineon community guidance |
Key Differentiators
- Documented obsolete-part replacement path (vs CY7C65630-56LTXC)
- Integrated USB termination reduces passive-component count (vs CY7C65630-56LTXC)
- Single 24 MHz crystal reference with integrated PLL (vs CY7C65630-56LTXC)
Design Notes
Do not assume that a related 56-QFN ordering variant is automatically interchangeable. The verified Infineon guidance supports CY7C65630-56LTXC as having the same apparent pinout and functionality, but the wording is conditional. Compare the official pin table, USB port configuration, supply limits, clock requirements, termination values, EEPROM behavior, and absolute maximum ratings before treating it as a production replacement.
Route the upstream and downstream USB differential pairs as controlled-impedance, tightly coupled traces with minimal stubs and continuous reference planes. Place the 24 MHz crystal and associated components close to the clock pins, and follow the manufacturer layout guidance for decoupling and USB pair routing. The 56-QFN 8 x 8 mm package also requires careful thermal-via and exposed-pad handling under the applicable package documentation.
Design the 3.3 V rail and downstream port-power switching around the electrical limits in the manufacturer datasheet. Budget regulator capacity for the controller plus enabled downstream loads, account for inrush during hot-plug, and verify that port over-current behavior produces the intended system response. The verified snippets do not provide absolute maximum current or port-current values, so these must not be estimated from generic USB limits.
Compliance Information
The supplied web results provide technical and lifecycle information but do not explicitly confirm RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status for this exact ordering code. Compliance must be confirmed using the manufacturer datasheet or current declaration documents.