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CS3308-CQZR - 8-Ch Analog Volume Control, 48-LQFP | Cirrus Logic
The Cirrus Logic CS3308-CQZR is a high-performance, low-power, 8-channel digitally controlled analog volume control IC designed for high-end audio systems, housed in a 48-pin LQFP (7x7 mm) package with surface-mount mounting. Key specifications include 8 independent volume channels, configurable zero-crossing detection for glitch-free level changes, a serial control interface compatible with I2C and SPI, a supply voltage range of 3.1 V to 5.25 V, and the ability to address up to 128 CS3308 devices on a single 2-wire I2C or 3-wire SPI bus for high-channel-count systems. The device targets professional audio equipment and consumer electronics that demand clean, click-free volume transitions. A digital volume control IC is an integrated circuit that performs attenuation or amplification of analog audio signals under the command of a microcontroller or DSP, replacing mechanical potentiometers in modern equipment. Within the audio signal chain, it sits between the source selector or DAC output and the power amplifier, and it belongs to the broader family of audio special-purpose ICs alongside DACs, ADCs, and audio amplifiers. Compared with mechanical potentiometers, a digitally controlled attenuator offers precise repeatability, remote control, memory recall, and absence of mechanical wear. Key features of the CS3308-CQZR include 8 independent channels with 0.5 dB step resolution, configurable zero-crossing detection to eliminate zipper noise during volume changes, a wide supply range of 3.1 V to 5.25 V suitable for 3.3 V and 5 V system rails, selectable I2C or SPI serial control interface, and hardware-addressable device IDs that allow up to 128 cascaded devices on a single bus. The combination of fine resolution and zero-crossing logic preserves audio signal integrity during level transitions. Technically, the CS3308 uses a resistive ladder network with CMOS switches and an internal zero-crossing detector that holds the wiper position until the audio waveform crosses zero, suppressing audible artifacts. The architecture provides very low total harmonic distortion plus noise (THD+N) and high channel-to-channel matching, which are essential parameters for multi-channel professional audio gear. Programmable address pins enable bus expansion without adding microcontroller I/O. Typical applications include professional audio mixing consoles, multichannel AV receivers and amplifiers, broadcast studio equipment, automotive head units and infotainment amplifiers, and home theater preamplifiers. In each case the CS3308 replaces mechanical or electromechanical volume controls with a precise, software-driven solution that supports remote control and preset recall. When designing with the CS3308-CQZR, ensure that analog input signals remain within the recommended common-mode and clip range, place bypass capacitors close to the supply pins, and verify I2C/SPI address selection when stacking multiple devices on the same bus. The LQFP-48 footprint gives good thermal performance for continuous signal-path operation. This page synthesizes current distributor pricing and stock, drop-in alternatives with the same 48-LQFP footprint, and practical design notes not consolidated in the manufacturer datasheet, delivering actionable information for both new designs and legacy audio system refreshes.
CS4207-CNZR - 4-In/6-Out HD Audio Codec w/ HP Amp | Cirrus Logic
The Cirrus Logic CS4207-CNZR is a highly integrated, multi-channel, low-power HD Audio Codec combining 192 kHz DACs, 96 kHz ADCs, 192 kHz S/PDIF transmitter and receiver, microphone preamp with bias voltage, and a ground-centered headphone driver, all in a 48-pin QFN (6x6 mm) package. The device operates from a single 3.3 V digital supply and a 5 V analog supply, delivers 24-bit serial audio data, and supports both HDA (HD Audio) and I2S serial interfaces to host controllers. An HD Audio Codec (High Definition Audio Codec) is a mixed-signal IC that converts digital audio streams from a PC/system chipset into line out the headphone, line stage, and microphone signals using internal DACs, ADCs, and headphone amplifiers. The codec sits in the audio signal chain between the host controller (e.g., Intel HDA-compliant chipset) and the analog transducers, and the term "HD Audio" denotes compliance with the Intel HDA Link specification rather than a frequency or bit-rate definition. CS4207-CNZR occupies the power-management IC and interface-IC tier of the audio subsystem, replacing multiple discrete ADCs, DACs, S/PDIF transceivers, and headphone amps with one package. The codec is the culmination of the signal chain (digital I/O -> mixed-signal codec -> analog out). Key features of the CS4207-CNZR include a multibit Delta-Sigma modulator architecture that enables infinite sample-rate adjustment from 32 kHz to 192 kHz, integrated ground-centered headphone driver (no DC blocking capacitors required at the output), microphone preamp with bias voltage source, and digital microphone interface support. The device supports 4 analog line/microphone inputs and 6 analog outputs, providing flexible routing for desktop, notebook, and embedded audio platforms. S/PDIF transmitter and receiver operate up to 192 kHz, allowing simultaneous digital audio transmission and reception. Technical depth: the Delta-Sigma modulator multibit topology achieves higher dynamic range and linearity than single-bit designs, while the ground-centered headphone architecture eliminates large output coupling capacitors, reducing BOM cost and improving low-frequency bass response. The codec integrates digital mixing, gain control, and jack-presence detection through the HDA link, simplifying host-driver interaction. Typical applications include desktop and notebook PC audio subsystems, all-in-one motherboards, embedded media players, and HD Audio-compatible docking stations. The wide format compatibility (HDA + I2S) and integrated HP amp make CS4207 well-suited for ultra-thin notebooks and small-form-factor designs where PCB area is constrained. When designing with this device, place the analog supply decoupling capacitors as close to the AVDD pins as possible to minimize analog-domain interference, and follow Cirrus Logic reference layout for the headphone output return paths to maintain low THD+N. The integrated HP amp eliminates external coupling capacitors but requires careful ground-centered routing to preserve low noise. This page synthesizes distributor pricing, parametric drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet. Engineers comparing HD Audio codec options for desktop/notebook designs will find the application notes, thermal considerations, and HDA source documents consolidated in this page.
CS4216-KL - 16-Bit Stereo Audio Codec | Cirrus Logic
Cirrus Logic CS4216-KL is a monolithic CMOS 16-bit stereo audio codec with integrated analog-to-digital and digital-to-analog conversion, filtering, and level setting. The device provides four audio inputs and two audio outputs for computer multimedia systems, supports word rates up to 50 kHz, and multiplexes left- and right-channel digital audio onto one serial data bus. It is supplied in a 44-pin PLCC package measuring 16.59 mm by 16.59 mm. An audio codec is a mixed-signal interface IC that converts audio between analog and digital domains. Its hierarchy is audio codec, multimedia codec, analog-to-digital and digital-to-analog converter, interface IC, and semiconductor. The CS4216 combines those functions so a digital computer system can accept analog audio sources, process samples digitally, and reproduce them through analog outputs without separate converter packages. Key capabilities include 16-bit stereo conversion, four analog inputs, two analog outputs, integrated interpolation and filtering functions, and a shared serial data interface. The CS4216 family targets computer multimedia, automotive, and portable audio equipment. Its integrated filtering and level-setting functions simplify board partitioning, while its multiplexed digital bus reduces the number of interconnects required between the codec and host or digital-audio controller. Technically, the monolithic CMOS implementation combines two conversion channels with shared digital serialization. Interpolation filters suppress unwanted high-frequency content and reduce aliasing in the reconstruction path, while the digital interface carries both stereo channels using word rates up to 50 kHz. The 44-pin PLCC offers a surface-mount package with J-lead termination and a body size of 16.59 mm by 16.59 mm. Typical uses include desktop and notebook multimedia audio, portable-audio equipment, automotive audio systems, and embedded systems requiring simultaneous analog capture and playback. In these applications, the four inputs can serve microphones, line-level sources, or other analog audio points, while the two outputs feed downstream amplifiers or audio routing stages. Host connectivity still requires correct timing, format, and signal-level design. The main design consideration is package and signal planning. Because the converter is a 44-pin PLCC rather than a modern leadless package, its footprint has limited long-term layout flexibility. Board layout should preserve analog and digital return paths, provide suitable bypassing, and follow the manufacturer's pin and reference-circuit guidance rather than assuming a generic codec footprint. This page consolidates the verified CS4216-KL identity, package, converter topology, application fit, and verified drop-in alternatives. It also distinguishes documented capabilities from parameters that still require confirmation from the manufacturer datasheet or a live distributor quotation.
CS4297-JQ AC'97 Stereo Audio Codec | Cirrus Logic | PC
Cirrus Logic CS4297-JQ is a 2-channel, AC'97 1.03-compatible stereo audio codec designed for PC multimedia systems and housed in a 48-TQFP 7 x 7 mm package. The device uses CrystalClear delta-sigma and mixed-signal technology to support high-quality audio in desktop, portable, and entertainment PCs. It integrates stereo modulation and a 48-kHz audio interface for legacy multimedia designs. An audio codec is a mixed-signal semiconductor that converts digital audio data into analog signals and accepts analog inputs for digital processing. In the product hierarchy, the CS4297-JQ is an audio codec and audio modulator, belonging to the broader interface IC and semiconductor categories. Its legacy AC'97 interface connects a host audio controller to external codec and speaker circuitry in PC sound-card architectures. The verified product data identifies the CS4297-JQ as an AC'97 1.03-compatible stereo codec with two channels. Its package is specified as 48-TQFP at 7 x 7 mm by DigiKey, while related Cirrus Logic records identify the package as LQFP. The compact surface-mount package supports compact desktop and portable multimedia layouts, although the large 48-pin footprint requires careful fanout and layout planning. Technical documentation describes the analog line inputs as internally biased at the Vrefout voltage reference and requiring AC coupling. The maximum allowable line input is 1 V RMS. These details make external coupling, input attenuation, and analog-ground return paths central to achieving predictable signal amplitude and reduced distortion in a legacy sound-card implementation. Typical applications include PC sound cards, desktop multimedia systems, portable entertainment computers, legacy AC'97 audio subsystems, and retro computer restorations. The device is particularly relevant when preserving an original SoundFusion architecture is more important than selecting a current USB or HD Audio codec. Designers should verify the complete pinout and electrical limits against the manufacturer datasheet before layout or repair work. AC-coupled line inputs require suitable passive components, while mixed-signal placement and grounding must keep switching and digital return currents away from sensitive audio paths. The listed alternatives should also be checked for exact interface, voltage, clocking, and pin compatibility rather than package alone. This page consolidates verified distributor descriptions, cross-reference findings, practical application context, and design cautions for engineers sourcing or restoring systems that depend on this discontinued stereo AC'97 codec.
CS61584-IQ5 - Dual T1/E1 3.3V/5V Line Interface Unit | Cirrus Logic
The Cirrus Logic CS61584-IQ5 is a Dual T1/E1 Line Interface Unit (LIU) designed for short-haul and long-haul telecom applications, integrating two independent transceivers for T1 (1.544 Mbps) and E1 (2.048 Mbps) line formats in a single 64-pin TQFP (10x10 mm) package. The part operates from a single 5 V supply (4.75 V to 5.25 V), supports 3.3 V digital I/O via dedicated VDD_IO, and dissipates power dissipation of 310 mW typical. According to Cirrus Logic product listings, the device is housed in a TQFP-64 (10x10 mm) surface-mount package rated -40 C to +85 C industrial temperature range, and the IQ5 suffix indicates a specific speed/temperature grade per Cirrus Logic ordering nomenclature. A Line Interface Unit (LIU) is a physical-layer transceiver IC that sits between a framer/framer-LIU combination and the T1 or E1 twisted-pair line, performing transmit pulse shaping, receive equalization, clock/data recovery, and line monitoring. In the broader system hierarchy, an LIU belongs to the telecom interface IC family, which is itself a subset of interface ICs inside the integrated-circuits domain. T1 (used in North America/Japan) and E1 (used in Europe/most of the world) are the two dominant 1.544 Mbps / 2.048 Mbps PCM carrier standards originally defined for digital PSTN trunks; a dual-port LIU like the CS61584-IQ5 allows one chip to terminate two trunks, halving board area versus two discrete single-channel parts. Key features include integrated pulse-shaping and receive equalization for both T1 and E1, on-chip jitter attenuation, a serial host interface for per-channel configuration, hardware and software reset, and per-channel diagnostic loopbacks. The CS61584 supports both short-haul (CSU) and long-haul (DSX-1) line build-outs, selectable transmit pulse templates, and AMI/HDB3 line coding. Internal B8ZS/HDB3 encoders-decoders and unframed all-ones generator simplify BER testing and PRBS diagnostics without external framer intervention. Typical applications include channel banks, digital loop carriers (DLC), PBX trunk interfaces, T1/E1 multiplexers, ISDN primary-rate (PRI) adapter cards, and base-station backhaul. Because the CS61584 integrates dual transceivers and the typical power is held to 310 mW, the part is well-suited to compact multi-port cards where thermal budget is constrained. Designers should provide proper 1:2 or 1:1.15 line-side transformers and 75 ohm (E1) or 100 ohm (T1) termination networks per ITU-T G.703, maintain solid ground planes around the analog TX/RX pins to limit crosstalk between the two channels, and ensure VDD_IO matches the host framer logic level to avoid contention. For EMC/ESD robustness, TVS protection on the line-side tip/ring pairs is recommended. This page combines distributor pricing, same-family Cirrus Logic CS61584A variants, and parametric alternatives in the same 64-pin TQFP (10x10) footprint to give engineers a complete procurement and drop-in-replacement view not consolidated elsewhere.
CS82C52 - Programmable UART and BRG | Intersil
The Intersil CS82C52 is a programmable Universal Asynchronous Receiver/Transmitter (UART) with an integrated Baud Rate Generator (BRG) in a 28-pin PLCC package. It is designed for serial-controller and UART interface applications where programmable baud-rate timing and asynchronous data transfer are required. The verified distributor listing identifies the device as a one-channel RS232 UART IC in a 28-PLCC package measuring 11.51 mm by 11.51 mm. A UART is a serial communication interface that converts parallel data from a controller into a framed serial stream and converts received serial data back into parallel data. The CS82C52 combines this UART function with a programmable baud-rate generator, placing transmit timing, receive timing, and serial-channel control in one CMOS interface IC. This integration reduces the number of external timing components compared with a UART implemented from separate logic. The verified material describes the CS82C52 as a high-performance programmable UART and BRG on a single chip. Its programmable architecture makes it suitable for systems in which the communication rate must be selected by the host controller or fixed through configuration logic. The RS232 classification identifies the electrical-interface class used by the associated UART function, while the actual board-level signal levels still depend on the transceiver and system design. Typical uses include embedded serial controllers, legacy industrial control equipment, peripheral interfaces, and communications systems that require a dedicated UART channel. The 28-pin PLCC package provides a defined leaded surface-mount footprint, allowing the part to be used where a compact, inspectable package is preferable to a fine-pitch package. The available data does not provide complete electrical timing tables, supply-voltage limits, or all pin-level details, so those specifications require confirmation from the manufacturer datasheet. For replacement work, engineers should verify the exact package, pin assignments, electrical limits, timing, temperature grade, and software-visible register behavior before approving a substitute. The device is an older CMOS interface component, so lifecycle status and sourcing should be confirmed at the time of procurement. Pricing and inventory are also time-sensitive and should be checked against current distributor records.
CXD90070GG - PS5 Slim SSD Controller BGA IC | Sony Interactive Entertainment
The Sony Interactive Entertainment (SIE) CXD90070GG is a custom SSD controller and Southbridge IC used on the Sony PlayStation 5 Slim (PS5 Slim) motherboard revision EDM-033, presented in a BGA package. It functions as the secondary controller that bridges the PS5's custom SSD storage subsystem with the console's main APU, managing NVMe protocol traffic, SSD command queuing, and PS5-specific security handshakes on the Slim chassis. It is supplied exclusively through repair-parts channels rather than mainstream franchised distributors and is targeted at PS5 Slim console repair technicians. A Southbridge IC is a peripheral controller chip that sits between a high-performance application processor and lower-speed peripherals such as storage, USB, audio, and networking. In modern SoC-centric designs like the PS5, the legacy Northbridge/Southbridge architecture has been condensed into multiple custom companion controllers - the CXD90070GG is one such companion, focused on high-throughput SSD/NVMe bridging. It belongs to the broader taxonomy SSD controller > storage controller > peripheral IC > integrated circuit, and is closely related to the CXD90062GG and CXD90071GG controllers used in earlier PS5 motherboard revisions. Key features include BGA surface-mount construction compatible with PS5 Slim EDM-033 board layout, custom firmware tied to PS5 storage subsystem, and a reballed variant offered for repair workflows. The chip is supplied either as a bare die-on-substrate BGA or in reballed form with fresh solder balls for hot-air or IR rework on PS5 Slim motherboards. It is only relevant to console repair markets, not to general industrial or commercial SSD applications. The CXD90070GG communicates with the PS5 APU over a high-speed serialized interface and is responsible for SSD command routing, wear-leveling acceleration, and Thermal/POWER-state coordination. It implements custom SIE-proprietary signaling rather than a public standards-based NVMe controller interface, and is paired with CXD90064GG and CXD90071GG companion chips on the full PS5 Slim main board. Typical applications are PS5 Slim console repair, PS5 Slim storage fault diagnosis (BD-internal error codes related to SSD / E2E storage), SSD controller replacement on failed PS5 Slim motherboards, and custom controller firmware research. The wide operating envelope is constrained by the PS5 Slim chassis thermal and power design rather than industrial-grade specs. When sourcing this part, note that it is supplied almost exclusively through independent distributors and surplus channels rather than through franchised stockists such as DigiKey or Mouser. Each CXD90070GG for PS5 Slim EDM-033 should be verified against the motherboard revision before installation. Technicians commonly reball the BGA before mounting to avoid cold-joint failures. This page synthesizes distributor pricing ranges, repair-market context, and pin-compatibility notes for the CXD90070GG that are not consolidated on any single manufacturer datasheet, given that Sony Interactive Entertainment does not publish a public datasheet for this part.
CY7C65100-SC - 4-Port USB 1.1 Hub Controller | Infineon
The Infineon CY7C65100-SC is a fixed-function four-port USB hub controller with 8 kB of OTP program memory, USB 1.1 compliance, and a 28-pin SOIC package measuring 0.295 inch, or 7.50 mm, wide. It expands one upstream USB attachment point into as many as four downstream ports without requiring firmware development. According to the manufacturer datasheet, the device is designed as a self-contained USB hub solution that reduces design risk and simplifies implementation. What is a USB hub controller? A USB hub controller is an interface IC that manages traffic between one upstream host connection and multiple downstream USB peripherals. In the device hierarchy, it belongs to the USB interface controller family, then interface integrated circuits, and finally semiconductors. Fixed-function controllers implement standard hub behavior in hardware rather than relying on application firmware, making them useful for established USB expansion designs. The CY7C65100 series supports USB Specification Revision 1.1 and provides up to four downstream ports. Its fixed-function architecture removes firmware-development requirements, while its 8 kB OTP memory provides embedded program storage. The 28-pin SOIC package supports conventional surface-mount assembly, and distributor records identify the device as an application-specific USB hub or microcontroller IC. The controller is intended for computers and peripheral systems that need additional USB attachment points. Typical implementations include desktop USB expansion, computer peripherals, external connection accessories, and legacy USB 1.1 equipment. Its four-port capability consolidates multiple downstream links behind one upstream port, reducing the need for separate hub hardware when downstream port count is the primary requirement. Engineers should verify the complete electrical characteristics, pin names, timing limits, and USB signal-routing requirements in the manufacturer datasheet before layout. USB differential pairs require controlled impedance and careful branch geometry, particularly when four downstream ports share one upstream interface. Decoupling and power distribution should follow the datasheet recommendations, and enumeration behavior must be checked against the target host and connected devices. This page distinguishes verified product facts from parameters that require engineering confirmation. The manufacturer datasheet identifies fixed-function USB hub behavior, USB 1.1 compliance, four downstream ports, and no firmware-development requirement; detailed operating limits, electrical values, and exact pin assignments remain subject to the published technical data.
CY7C65211-24LTXI - USB 2.0 UART/I2C/SPI Bridge | Infineon
The Infineon Technologies CY7C65211-24LTXI is a full-speed USB 2.0 serial bridge controller with UART, I2C, SPI, CAPSENSE, and USB Battery Charging Specification support, packaged in a 24-QFN 4x4 mm package. It supports up to 3 Mbps UART operation and 400 kHz I2C operation, making it a compact USB-to-serial interface for embedded systems. A USB-serial bridge is an interface IC that translates USB traffic from a host computer into UART, I2C, or SPI transactions for an embedded peripheral. The CY7C65211 family belongs to the broader hierarchy of interface controllers, USB interface ICs, and semiconductors. Its integrated configuration memory, voltage regulator, oscillator, CAPSENSE functions, and power-management features reduce the external circuitry required for a USB-connected peripheral. According to the verified Infineon product and datasheet data, the device supports full-speed USB, 3 Mbps UART, and 400 kHz I2C. The family also supports SPI and CAPSENSE, while the CY7C65211 version is described as compliant with the USB Battery Charging Specification, revision 1.2. The target ordering code is supplied in a 24-QFN package identified by distributors as 4x4 mm. The CY7C65211 is designed for USB connectivity in peripherals that use more than one serial protocol. A host can use the bridge for UART firmware or data links, I2C sensor access, or SPI peripheral control, depending on the device configuration. Its integration supports cost-effective implementation where an external USB transceiver, protocol converter, and separate configuration memory would otherwise be required. Typical uses include USB-to-UART cable designs, USB-connected sensor hubs, industrial control adapters, configuration or programming interfaces, capacitive-input products, and embedded accessories that need bus-powered operation. The verified manufacturer description specifically identifies serial peripherals, USB battery charging, CAPSENSE, and USB 2.0 connectivity as core application areas. When laying out a design, confirm the selected UART, I2C, or SPI configuration, USB signal routing, power supply requirements, and pin multiplexing against the manufacturer datasheet. Do not assume that a two-wire UART design can leave every unused serial pin unconnected without checking the device configuration requirements. This page consolidates verified manufacturer data, distributor package information, and application guidance without inventing unavailable electrical limits.
CY7C65213-28PVXI - USB-UART LP Bridge Controller 28-SSOP | Infineon
The Infineon CY7C65213-28PVXI is a fully integrated USB-to-UART bridge controller that provides a single-chip solution for upgrading legacy UART peripherals to USB. Housed in a 28-pin SSOP package, it integrates a USB 2.0 Full-Speed controller, a UART transceiver, an internal 3.3V regulator, an internal oscillator, and 512 bytes of flash configuration memory. The part supports a UART data rate of up to 3 Mbps with 7 or 8 data bits and includes general-purpose I/O pins for status and control signalling. A USB-to-UART bridge is a class of bridge controller that translates between the USB protocol on the host side and an asynchronous serial (UART) interface on the device side, allowing legacy RS-232-style peripherals to gain modern USB connectivity without redesign. Within the broader product taxonomy, the CY7C65213 sits at the hierarchy: USB bridge controller -> interface IC -> communication IC -> semiconductor device. Its integrated regulator removes the need for an external 3.3V supply, and its internal oscillator removes the need for an external crystal, simplifying the BOM to a handful of decoupling capacitors. Key features include USB 2.0 Full-Speed (12 Mbps) compliance, support for USB suspend and resume signalling, hardware and software flow control ( RTS/CTS and XON/XOFF), integrated 512-byte flash for custom VID/PID and descriptor storage, configurable GPIO, and an industrial operating temperature range of -40C to +85C. The internal LDO supports bus-powered or self-powered configurations as defined by the USB 2.0 specification, simplifying the upstream power-section design. Architecturally, the CY7C65213 uses a serial interface engine (SIE) for USB protocol handling and a dedicated UART block with FIFO buffers, offloading all USB enumeration and protocol management from the host MCU. This lets designers replace legacy RS-232 transceivers with a single chip and a USB connector, reducing board area, BOM cost, and firmware complexity. Typical applications include USB-to-serial dongles for embedded debugging, industrial sensor readout with USB connectivity, point-of-sale (POS) terminals that expose legacy UART peripherals to PCs, and upgrade modules for legacy RS-232 equipment. The integrated flash also supports manufacturer-specific descriptors, allowing direct use as a branded device rather than requiring a generic-CDC driver. When designing with the CY7C65213, treat the VBUS and D+/D- lines as a controlled-impedance 90 ohm differential pair (per USB 2.0), and place the internal-regulator decoupling capacitors (typically 1uF and 0.1uF ceramic) within 1-2 mm of the VCCD pin. Note that the 28-SSOP variant is pin-to-pin compatible with the FTDI FT232R-style footprint when migrating designs across bridge vendors. This page synthesizes Infineon parameter data, distributor pricing tiers, and a curated drop-in alternative list that is not present on the manufacturer datasheet - giving engineers one consolidated source for sourcing, comparison, and PCB-level substitution decisions.
CY7C65213-32LTXI USB-UART Bridge 32-QFN | Infineon
The Infineon Technologies CY7C65213-32LTXI is a fully integrated USB-to-UART bridge controller with USB 2.0 Full-Speed operation, a 3 Mbps UART interface, eight GPIOs, and RS232/RS422 support, housed in a 32-QFN 5 mm × 5 mm package. A USB-UART bridge is an interface IC that converts a USB host connection into a conventional serial UART link. It belongs to the USB interface-controller hierarchy, connects a computer or USB host to embedded equipment, and reduces the need for a separate USB transceiver and UART controller. The CY7C65213 family is intended to modernize legacy UART-based equipment while preserving familiar serial communication in cables, test systems, industrial controls, and development boards. The principal verified features include USB 2.0 Full-Speed operation, UART data signaling up to 3 Mbps, eight general-purpose I/O pins, and support for RS232 and RS422 interfaces. Its integrated bridge architecture can simplify host-side peripheral enumeration and reduce the external component count. The 32-QFN package is compact but requires careful PCB layout and exposed-pad thermal management according to the manufacturer footprint guidance. The device also supports low-power behavior through its SLEEP# assertion when the USB bus enters suspend, a feature described in the manufacturer datasheet as helping meet stringent USB 2.0 suspend-current requirements in bus-powered systems. This makes the bridge relevant to portable and embedded USB equipment where standby current matters. Exact operating-voltage, temperature, GPIO-drive, and power-consumption values must be confirmed from the complete manufacturer datasheet. Typical applications include USB-to-UART adapters for embedded development boards, industrial serial gateways, laboratory test equipment, configuration interfaces, printer or peripheral adapters, and retrofit products that previously relied on a legacy UART connector. The bridge can be paired with a host MCU when a system needs protocol processing, or with level-shifting and protection components when the external serial interface must connect to longer or industrial cable runs. For a new design, verify the exact package pinout, voltage limits, crystal or clock requirements, UART electrical standard, and host-driver behavior before layout release. USB signal routing should follow the manufacturer reference layout, with controlled differential impedance and short connector-to-device paths. The principal engineering trade-off is integration and footprint savings versus the need to validate suspend current, signal integrity, and driver compatibility on the completed host system. This page combines the verified manufacturer and distributor information with practical interface-bridge selection guidance, while marking unspecified electrical details for datasheet confirmation rather than estimating them.
CY7C65213-32LTXIT - USB to UART Bridge 3Mbps | Infineon
The Infineon Technologies CY7C65213-32LTXIT (originally Cypress Semiconductor) is a fully integrated USB-to-UART bridge controller with USB 2.0 Full-Speed interface, up to 3 Mbps UART data rate, and 8 GPIOs, housed in a 32-pin QFN (5x5 mm) package with exposed pad. A USB-UART bridge IC is a type of interface controller that converts between a USB host port and a standard asynchronous serial (UART) port, allowing legacy serial devices to communicate over USB. Within the semiconductor hierarchy it belongs to the interface IC family, specifically USB bridge controllers, which sit between USB transceivers and application processors in a typical connectivity signal chain. Bridges handle enumeration, protocol conversion, and flow control so the host sees a standard COM port without custom drivers at the hardware level. Key features of the CY7C65213 include a USB 2.0 Full-Speed (12 Mbps) controller, a UART transceiver supporting data rates up to 3 Mbps, RS232/RS485 protocol support, 8 configurable GPIOs, an integrated 512-byte flash for vendor customization, an internal 3.3V regulator allowing 3.3V or 5V operation, and an internal oscillator that eliminates the need for an external crystal. This high level of integration minimizes the external bill of materials to essentially a USB connector and a few decoupling capacitors. Architecturally, the device combines the USB full-speed engine, serial interface engine, UART transceiver, and flash memory in a single low-power controller. The internal regulator and oscillator reduce design complexity and cost compared with discrete two-chip USB-to-serial solutions, while the GPIOs enable control signals such as RTS/CTS hardware flow control or status LEDs. Typical applications include upgrading legacy UART-based devices to USB, industrial equipment with RS232/RS485 links, point-of-sale terminals, set-top boxes, and development/debug UART consoles for embedded processors. According to Infineon, the CY7C65213 is pin-to-pin compatible with the FTDI FT232R, making it a recognized drop-in replacement in 32-QFN implementations. A key design consideration: verify the UART voltage domain, since the device operates from 3.3V or 5V via its internal regulator, and confirm flow-control pin mapping when replacing an FT232R layout because some secondary features differ. This page synthesizes distributor pricing, drop-in alternative analysis, and practical design notes not found in the manufacturer datasheet.
CY7C65213A-32LTXI - USB-UART Bridge Controller, RS485, 32-QFN | Infineon
The Infineon CY7C65213A-32LTXI is a fully-integrated USB-to-UART bridge controller housed in a 32-pin QFN (5x5 mm) package with USB 2.0 Full-Speed compliance, RS485 transceiver support, up to 3 Mbps UART data rate, and 8 configurable GPIO pins. It is the A-revision (CY7C65213A) enhancement of the original CY7C65213, adding RS485 signaling while retaining pin-compatibility with the 32-QFN footprint used by the legacy part. An internal 3.3V LDO, internal oscillator, and 512-byte on-chip configuration memory are integrated, allowing a minimal-BOM upgrade path for legacy UART peripherals to USB. A USB-to-UART bridge controller is a class of interface IC that bridges the USB protocol stack on the host side with an asynchronous serial (UART) interface on the device side. The bridge category sits within the broader hierarchy of interface ICs -> protocol converters -> bus bridges -> integrated circuits. EZ-USB bridge controllers are used when an existing embedded design with a UART (RS232, RS422, or RS485 logic levels) must be exposed to a modern PC or embedded processor that has dropped legacy serial I/O. Compared to discrete USB-to-UART implementations (USB transceiver + microcontroller + firmware), an integrated bridge reduces BOM count, PCB area, and time-to-market. Key features of the CY7C65213A include a USB 2.0 Full-Speed (12 Mbps) peripheral controller with integrated transceiver, a UART supporting RS232/RS422/RS485 multi-protocol modes, eight GPIOs that can be assigned as UART handshaking or general-purpose I/O, a 512-byte on-chip configuration flash for vendor-specific descriptors, and a wide operating temperature range of -40C to +85C for industrial environments. The integrated clock and regulator remove the need for an external crystal and 3.3V supply rail. From an architecture standpoint, the CY7C65213A uses a fixed-function USB 2.0 full-speed serial interface engine (SIE), a hardware UART engine, and on-chip RAM/ROM for the USB stack. Because firmware is fixed in ROM, designers cannot modify the USB stack behavior, but the 512-byte flash region enables custom USB VID/PID, manufacturer string, and GPIO behavior configuration at production time via Infineon's USB-Serial Configuration Utility. Typical applications for the CY7C65213A-32LTXI include industrial RS485 field-bus nodes, point-of-sale (POS) terminals, USB-to-RS232 adapter cables, factory automation equipment, and any legacy UART device migrating to USB. The QFN-32 (5x5 mm) footprint supports compact handheld designs. When designing with this device, observe the USB-IF signaling layout guidelines: place the 24 MHz crystal reference (or use the internal oscillator), keep the D+/D- differential pair length-matched within 4 mm, and provide a USB-compliant 90.9 ohm differential impedance on the upstream USB traces. Bulk decoupling should include a 4.7 uF capacitor on VBUS and a 0.1 uF capacitor on each supply pin. This page synthesizes distributor pricing, verified drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, with each parameter cross-referenced to its source.
CY7C65620-56LFXA Low-Power USB 2.0 Hub | Infineon
The Infineon CY7C65620-56LFXA is a low-power USB 2.0 hub controller in a 56-pin QFN package. The verified product data identifies it as the EZ-USB HX2LP device and indicates a controller interface for USB hub implementations; detailed electrical ratings, pin assignments, and timing values were not included in the supplied source excerpts. Its 56-QFN package is the relevant footprint for PCB compatibility and assembly planning. A USB hub controller is an interface integrated circuit that coordinates communication between one upstream USB host connection and multiple downstream USB ports. Within the broader hierarchy, it is a USB interface IC, then a USB controller, and ultimately a semiconductor used to expand USB connectivity. Hub controllers commonly include port-management logic and configurable GPIO resources, although the exact feature set and firmware requirements must be confirmed from the manufacturer datasheet. The verified listing describes the CY7C65620-56LFXA as an EZ-USB HX2LP low-power USB 2.0 hub controller. Mouser identifies it as a USB interface IC, while LCSC reports an in-stock status and a price from $0.3457. These listings support commercial availability information, but they do not provide a complete verified specification set for implementation. The product is therefore best treated as a procurement and package-level reference until the full datasheet is reviewed. The Infineon product-page result for the related CY7C65620-56LTXC describes a configurable two-port single-TT hub with GPIO, LED-indicator, and EEPROM configuration options. That information describes the related ordering variant and should not be transferred automatically to the CY7C65620-56LFXA without checking the exact datasheet ordering table. Engineers should verify electrical limits, pin names, exposed-pad requirements, clocking, power sequencing, and USB signal-routing guidance before layout release. Typical uses include USB hubs, USB monitors, docking stations, embedded USB expansion systems, and compact peripheral equipment. In these applications, the controller’s principal value is integration: it reduces the discrete logic required to manage multiple USB downstream ports while keeping the implementation within a compact QFN footprint. The main design consideration is package and signal integrity. A 56-QFN controller requires a footprint-compatible land pattern, controlled power and ground distribution, and careful routing of USB differential pairs. Because the supplied data does not expose complete pin-level or electrical details, every board design must follow the official manufacturer datasheet rather than relying on distributor snippets. This page consolidates verified distributor listings, related manufacturer information, package identity, pricing availability, and design-oriented cautions. It does not invent missing electrical specifications, pin names, timing values, or alternatives; the validation markers identify information that still requires manufacturer-documentation review.
CY7C65621-56LTXC - USB 2.0 2-Port Hub Controller | Infineon
The Infineon CY7C65621-56LTXC is a low-power USB 2.0 hub controller from the EZ-USB HX2LP Lite family, providing two downstream ports with single-TT bus-powered support in a 56-QFN (8x8 mm) package. It integrates USB 2.0 compliance, an upstream port, and two downstream ports on a single chip, replacing discrete hub designs with a compact surface-mount solution. A USB 2.0 hub controller is a class of interface IC that expands one upstream USB port into multiple downstream ports, handling transaction translation (TT), signal conditioning, and protocol compliance. The HX2LP Lite family belongs to Infineon's USB hub controller hierarchy, sitting between USB transceivers (physical layer only) and full USB host controllers (which add host-role processing). This positions the CY7C65621 as a self-contained USB 2.0 hub IC suitable for embedded systems without an internal root hub. Key features include USB 2.0 compliance at low-, full-, and high-speed (480 Mbps), integrated upstream and downstream transceivers, single-TTT transaction translation, bus-powered or self-powered operation, and per-port overcurrent detection. The 56-QFN package provides a low-profile footprint for space-constrained designs such as docking stations, monitors, and embedded motherboards. The CY7C65621 employs a serial interface engine plus a hub repeater architecture, offloading USB protocol overhead from the system processor. Per-port overcurrent sensing and ganged-power-switching reduce BOM cost, while internal pull-up/pull-down resistors simplify PCB layout by removing most external USB components. Typical applications include USB 2.0 hubs and docking stations, monitors with integrated USB ports, embedded motherboards, industrial USB expansion modules, and consumer peripherals such as printers. The wide operating voltage and low suspend current also make it suitable for battery-powered USB expansion accessories. When designing with this device, follow Infineon's reference schematic for USB impedance-controlled routing (90 ohm differential) and place the 24 MHz crystal within 5 mm of the XTALIN/XTALOUT pins. Decouple VBATT and VDD with 1uF ceramic capacitors placed within 2 mm of the respective pins. This page synthesizes distributor pricing, drop-in alternative listings, and PCB layout design notes not found in the manufacturer datasheet alone.
CY7C65621-56LTXCT - 4-Port USB 2.0 Hub Controller | Infineon
The Infineon CY7C65621-56LTXCT is a 4-port, USB 2.0 hub controller from the EZ-USB HX2LP Lite low-power family, supplied in a 56-pin QFN (8x8 mm) package with 0.90 mm height. It implements a USB 2.0 high-speed hub with integrated upstream and downstream termination resistors, integrated port status indicator control, and a 24 MHz external crystal with internal PLL. The device operates from a single 3.3 V supply and supports bus-powered and self-powered topologies. 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.
CY7C65621-56LTXI USB 2.0 Hub Controller | Infineon
Infineon Technologies CY7C65621-56LTXI is a two-port USB 2.0 hub controller supporting Full Speed and High Speed operation in a 56-QFN package. The verified product information identifies a 3.3 V device, an integrated USB Serial Interface Engine for host communication, and support for a two-port single-TT bus-powered application. Its 56-pin QFN package measures 8 mm by 8 mm and includes an exposed pad. A USB hub controller is an interface integrated circuit that coordinates traffic between a USB host and multiple downstream peripherals. Within the hierarchy of USB interface controllers, hub controllers, interface ICs, and semiconductors, it provides device enumeration, downstream-port management, and shared host connectivity. The target part is therefore useful when one USB host connection must fan out to two USB devices without relying on a host-side software hub. The verified data highlights Full Speed and High Speed USB 2.0 operation, two downstream ports, a 3.3 V supply, and a single-TT bus-powered configuration. The Serial Interface Engine allows the controller to communicate with the USB host, while the QFN exposed-pad package supports compact surface-mount construction and board-level heat spreading. The I-grade ordering code is explicitly identified by the manufacturer for the two-port bus-powered application. The CY7C65621 family is intended for USB hubs and related interface equipment where deterministic downstream-port control is required. Compared with a four-port hub controller, the two-port architecture can fit installations that need exactly two ports and may simplify enclosure, cable, and power-budget considerations. Firmware, descriptor configuration, downstream transceiver characteristics, and detailed electrical limits should be checked in the manufacturer datasheet before board release. Typical installations include compact USB hubs, bus-powered accessories, embedded USB expansion equipment, and two-port docking products. The device can sit between a host controller and two downstream connectors, provided the board implements the required USB routing, decoupling, protection, and exposed-pad thermal construction. USB signal integrity is especially important because high-speed edges and connector launches can introduce reflections and loss. For a new design, use the manufacturer ordering information and datasheet to confirm pin assignments, supported operating modes, crystal or clock requirements, power sequencing, and transceiver layout. Treat the published 3.3 V value as the verified supply figure, but verify every electrical limit and application guideline in the official documentation. This page combines verified distributor facts, official product identification, application guidance, and replacement constraints rather than adding unsupported specifications.
CY7C65631-56LTXC - 2-Port USB 2.0 Hub Controller | Infineon
The Infineon CY7C65631-56LTXC is a 3.3 V EZ-USB HX2LP low-power USB 2.0 hub controller with integrated upstream and downstream termination resistors in a 56-pin QFN package measuring 8 mm by 8 mm. Verified data identifies the device as a two-port full-speed/high-speed USB hub controller with a 24 MHz external crystal and integrated PLL. A USB hub controller is an interface IC that manages one upstream USB connection and multiple downstream ports. It belongs to the USB interface-controller hierarchy, which sits between a USB host and connected peripherals while handling enumeration, signaling, power-gating coordination, and port status. The EZ-USB HX2LP family is designed for compact USB-to-serial, storage, communications, and embedded systems. Key verified features include integrated upstream and downstream termination resistors, integrated port-status indicator control, and in-system EEPROM programming. A 24 MHz crystal supplies the reference required for USB timing, while the integrated PLL supports low-power hub operation. The controller operates from 3.3 V and uses a compact 56-QFN surface-mount package to support space-constrained equipment. The part supports USB full-speed and high-speed operation according to distributor descriptions. Its integrated resistors can reduce external termination-component count, while indicator-control outputs can simplify implementation of port activity or power-status LEDs. In-system EEPROM programming adds configuration flexibility for firmware and hub descriptors, subject to the manufacturer's documented programming procedure. Typical uses include USB storage adapters, embedded USB expansion systems, printer interfaces, industrial equipment, and compact host-powered or externally powered USB hubs. System designers must follow the manufacturer datasheet for clock layout, decoupling, port-power sequencing, exposed-pad thermal construction, and supported operating-temperature grades. The supplied search data specifically describes the C suffix as a commercial-temperature offering. When designing the hub PCB, prioritize short controlled-routing USB traces, compliant power distribution, and the package's exposed-pad requirements. Validate downstream-port switching and current budgets under worst-case bus loads because controller selection alone does not determine system power. Confirm supply topology and USB attach behavior against the exact manufacturer documentation before production release. This page consolidates verified manufacturer and distributor information with package, application, purchasing, and design guidance. It also clearly separates confirmed facts from parameters that require direct confirmation from the complete datasheet or distributor pricing records.
CY7C65631-56LTXI - 4-Port USB 2.0 Hub Controller | Infineon
The Infineon Technologies CY7C65631-56LTXI is a USB 2.0 hub controller with support for up to four downstream ports, a single transaction translator, and bus-powered or self-powered operation in a 56-pin QFN package measuring 8 mm by 8 mm. According to the verified Infineon product information, the device belongs to the EZ-USB HX2LP family and is offered in an I-grade configuration. A USB hub controller is an interface IC that manages traffic between one upstream USB host connection and multiple downstream USB ports. Within the hierarchy of USB interface controllers, hub controllers, USB interface ICs, and semiconductors, this device provides port expansion, transaction translation, enumeration support, and power-distribution coordination for USB 2.0 systems. The controller supports up to four downstream ports and USB 2.0 operation. It can operate in either bus-powered or self-powered modes, allowing the same controller family to address systems with different source-current requirements. Its single-translator architecture is identified by Infineon as suitable for ultralow-power applications, while the verified listing describes the family as a low-power USB 2.0 hub controller. The verified product material also identifies an automotive and industrial-grade option rated to 85 °C. This qualification statement applies to the described family or option, but no specific AEC-Q100 certification was supplied, so automotive qualification remains unconfirmed. USB-IF certification is identified by the verified technical listing as TID 30000009, and Windows Hardware Quality Lab compliance is likewise stated in that listing. Typical uses include compact USB 2.0 hubs, powered desktop peripherals, industrial data-acquisition equipment, automotive infotainment interfaces, and embedded systems that need more than one USB peripheral connection. The controller must be paired with suitable USB connectors, protection components, power switches, firmware, and a host platform that supports its hub implementation. Designers should preserve the package footprint, exposed-pad thermal path, USB data-routing geometry, and decoupling arrangement specified by the manufacturer datasheet. USB differential pairs require controlled impedance and short, symmetric routing; incorrect return paths or inadequate power planning can cause enumeration failures even when the controller itself operates correctly. This page consolidates verified manufacturer and distributor information, package identification, commercial availability, technical feature context, and engineering guidance. It also identifies where additional datasheet values are required rather than estimating unverified electrical or pin-level details.
CY7C65632-28LTXC - 4-Port USB 2.0 Hub Controller | Infineon
The Infineon CY7C65632-28LTXC is a very-low-power USB 2.0 hub controller supporting up to four downstream ports and configured as a single-TT four-port hub. It operates from a 3.3 V supply and is packaged in a 28-pin QFP bulk package with a C-grade temperature designation. The device is intended for compact USB connectivity equipment where an upstream USB port is expanded into multiple downstream ports. A USB hub controller is a system-level interface semiconductor that manages USB traffic, port power, enumeration, and device attachment across multiple USB ports. Within the product hierarchy, this controller belongs to the USB interface controller family, which is part of interface integrated circuits and broader semiconductor connectivity solutions. Unlike a passive USB splitter, an active hub controller can manage four downstream ports, provide port-status control, and support configuration through GPIOs or EEPROM. The verified feature set includes integrated upstream and downstream termination resistors, integrated port-status indicator control, a 24 MHz external crystal with an integrated PLL, and in-system EEPROM programming. These functions reduce external support circuitry and simplify implementation of a bus-powered or self-powered USB hub. The single-TT topology also gives designers a defined method for sharing a USB high-speed path among attached devices. The controller belongs to the EZ-USB HX2VL family and is identified by the Infineon product page as a four-port, single-TT, GPIO- and EEPROM-configurable hub controller. The verified operating-temperature range is 0°C to 70°C, identifying it as a commercial-temperature C-grade option rather than an industrial- or automotive-temperature device. Typical uses include USB connection hubs, docking stations, peripheral-sharing equipment, card readers, printers, and embedded USB expansion products. Designers should pay particular attention to power-enumeration requirements, downstream-port current limits, USB high-speed routing, crystal timing, and the fact that the C-grade part is limited to 0°C to 70°C. The key design consideration is that correct USB hub operation depends on the complete power and signal system, not only the controller IC. Provide the required bypass capacitors, correctly route high-speed differential pairs, maintain compliant termination and ESD protection, and implement the required USB power switching. The target's integrated termination and PLL simplify those blocks, but they do not eliminate validation of the assembled hub against the applicable USB requirements. This page combines the verified Infineon and distributor data with a package-aware comparison, practical implementation guidance, and clearly marked data gaps. It helps engineers separate confirmed specifications from details that must be checked in the manufacturer datasheet before schematic release or PCB layout.
CY7C65632-28LTXCT - USB 2.0 4-Port Hub Controller | Infineon
The Infineon CY7C65632-28LTXCT is a low-power USB 2.0 hub controller from the EZ-USB HX2VL family, supplying up to four downstream ports in a 28-pin QFN package. It is USB 2.0 specification compliant, operates from a single 3.3 V supply, and integrates a single Transaction Translator (TT) for full-/low-speed downstream support, targeted at cost-sensitive hub designs. A USB 2.0 hub controller is a function-specific integrated circuit that aggregates one upstream USB port into multiple downstream USB ports while managing enumeration, power switching, bus enumeration, and transaction translation between the host and connected devices. It belongs to the broader category of USB Interface ICs, within the larger Interface ICs and Integrated Circuits taxonomy. By placing the hub logic and downstream port control on a single die, the HX2VL part eliminates the external TT IC typically required by multi-TT hubs and cuts the BOM for 2- and 4-port hubs. Key features include integrated upstream and downstream USB termination resistors, integrated port-status indicator control (LED drivers), an integrated 24 MHz crystal amplifier, an in-system EEPROM interface for vendor ID / product ID / port-remap customization, and per-port overcurrent detection. The device is configurable via GPIOs to expose 2-port or 4-port topologies and supports both self-powered and bus-powered hub operation. Suspend current consumption is held to a minimum to meet USB 2.0 suspend-current requirements for bus-powered applications. Internally, the HX2VL uses a serial-interface engine for the upstream port and a hub repeater/transaction-translator architecture for the downstream ports, with port-mapping logic driven by the optional external EEPROM. The integrated termination and indicator control reduce PCB area to roughly a 4-layer design with no external PHY, which is the dominant reason designers select this part for compact hub dongles and embedded USB ports. Typical applications include standalone 4-port USB 2.0 hubs for consumer desktops, laptop port replicators, monitors with embedded USB hubs, embedded motherboards, and printer front-panel USB ports. The part is also deployed in industrial USB expansion modules where the GPIO-driven port remapping supports non-standard pin assignments. Designers should keep the 24 MHz crystal or clock source within 5 mm of the XIN/XOUT pins, route the DP/DM differential pairs with 90-ohm differential impedance, and place the upstream port termination near the device pins to preserve USB 2.0 high-speed signal integrity. The optional EEPROM is only required if custom VID/PID or port-disable remapping is needed. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes drawn from the manufacturer datasheet and field experience, in a form that distributors' product pages do not offer.
CY7C65632-48AXC - 4-Port USB 2.0 Hub Controller | Infineon
The Infineon CY7C65632-48AXC is a USB 2.0 hub controller configured as a four-port, single-TT hub, with configurable GPIOs, LED indicators, and EEPROM support. It is supplied in a 48-pin TQFP package with a 7 mm by 7 mm body and a 3.3 V supply requirement. The controller is identified as C-grade in the Infineon product listing. A USB hub controller is an interface IC that manages traffic between one upstream USB host connection and multiple downstream USB ports. In the broader device hierarchy, the CY7C65632 belongs to the USB interface-controller class, then to USB bus controllers and interface ICs, and ultimately to broader semiconductor and connectivity solutions. Its single-TT architecture supports hub communication while programmable port features help connect indicators, controls, or external configuration memory. The verified product listing identifies USB 2.0 operation, four-port Single-TT hub operation, configurable GPIOs, LED-indicator support, EEPROM capability, and a 48-pin TQFP package. A third-party technical listing gives a 3.3 V supply voltage and a 0 to 70 °C operating-temperature range. It also identifies the device as a line and bus controller, while the supplied data confirms a 7 mm by 7 mm TQFP package from the distributor listing. The part is intended for USB hub designs where multiple downstream ports must be coordinated from one upstream connection. Its configurable GPIO and LED functions can be used to report port status or implement user-facing controls, while EEPROM support can assist with configuration storage. The exact pin assignments, electrical limits, timing values, and crystal requirements should be taken from the manufacturer datasheet rather than inferred from distributor summaries. Typical applications include USB 2.0 peripheral hubs, docking stations, desktop connection accessories, embedded USB expansion systems, and equipment that requires multiple downstream USB ports. The single-TT topology and C-grade designation should be matched to the system’s required USB topology, operating-temperature class, and production qualification requirements before release. For PCB design, preserve the controller’s USB data routing, power distribution, clock input, and decoupling requirements from the manufacturer datasheet. Keep high-speed USB traces short and controlled, provide suitable return paths, and verify connector and enclosure decisions against the final hub architecture. Do not substitute a different package or topology solely because its nominal USB function is similar. This page combines the verified manufacturer and distributor identity, exact package information, available commercial references, engineering guidance, and clearly marked data gaps. Distributor pricing, lead time, detailed pinout, and complete lifecycle parameters should be reconfirmed during sourcing and design review.
CY7C65632-48AXCT - HX2VL USB 2.0 4-Port Hub Controller | Infineon
The Infineon CY7C65632-48AXCT is a Very Low-Power USB 2.0 Hub Controller from the HX2VL family, supporting up to four downstream ports with integrated upstream and downstream transceivers, a USB Serial Interface Engine (SIE), USB Hub Control and Repeater logic, and Transaction Translator (TT) logic. It operates from a 3.15 V to 5.25 V supply, ships in a 48-pin TQFP (7x7 mm) package, and is qualified for the 0 to 70 C commercial temperature range. The part is supplied on Tape and Reel (TR) in the 48-AXC shipping form. A USB 2.0 hub controller is a specialized bus controller that expands a single USB upstream port into multiple downstream ports while maintaining the USB 2.0 protocol envelope. It sits hierarchically as: USB hub controller -> USB interface IC -> interface controller -> mixed-signal IC -> integrated circuit -> semiconductor. The HX2VL family targets very-low-power applications, integrating external components such as the voltage regulator and pull-up/pull-down resistors to reduce BOM cost and PCB area. Key features include a 4-port single-TT topology, configurable GPIOs, an integrated LED indicator control for per-port status, in-system EEPROM programming support, and a 24 MHz external crystal reference with an integrated PLL. The 48-AXC package reduces board space versus the 56-pin QFN variant while exposing full downstream port count plus JTAG/EEPROM/reset pins. The integrated upstream termination, integrated 1.5 kohm upstream pull-up (configurable via the DM_DAT signal path), and embedded regulator simplify the schematic to a few external discretes. From an architectural perspective, the HX2VL combines a USB 2.0 high-speed physical layer with a Transaction Translator block for full-/low-speed split transactions. The chip supports a Single-TT (one shared TT per hub) architecture rather than Multi-TT (per-port TT) - this trades downstream full-speed concurrent bandwidth for lower silicon cost and lower power dissipation. Per Infineon datasheet, the embedded regulator provides a 3.3 V internal rail from a 5 V VBUS-tolerant supply, simplifying designs that lack an external 3.3 V LDO. Typical applications include USB 2.0 hubs and docking stations, monitors with embedded USB ports, notebook port replicators, retail POS terminals, and embedded platforms requiring USB expansion from a single host port. Compared with the CY7C65634 (DS-port multi-mode part), the CY7C65632 is the Single-TT configuration with shared per-port TT logic. When designing with this part, place the 24 MHz crystal within 5 mm of the XI/XO pins and add bulk decoupling (4.7 uF plus 0.1 uF) close to VCC. Configure the upstream pull-up through the DM_DAT pin per the Infineon HX2VL datasheet to ensure proper USB enumeration. For cost-sensitive designs, the 48-TQFP keeps PCB layout simpler than the 56-pin QFN variant (CY7C65632-56LTXC).
CY7C65634-28LTXC - 2-Port USB 2.0 Hub Controller | Infineon
The Infineon CY7C65634-28LTXC is a two-port Single-TT USB 2.0 hub controller supporting Low Speed, Full Speed, and High Speed USB devices in a 28-pin QFN package. It operates from a 4.75 V to 5.25 V supply, supports a 0 °C to 70 °C temperature range, and is configurable through GPIO connections and an EEPROM. The C-grade designation identifies the exact ordering variant supplied in bulk packaging. A USB hub controller is an interface-controller semiconductor that manages traffic between one upstream USB host connection and multiple downstream ports. Within the hierarchy, this device is a USB interface controller, then a USB hub controller, then a USB 2.0 peripheral, and finally an integrated circuit. Its two-port Single-TT topology consolidates USB traffic-management functions while leaving port behavior configurable for compact external hubs, docking equipment, and embedded USB expansion. The verified product information identifies USB 2.0 operation, two downstream ports, Low Speed, Full Speed, and High Speed support, GPIO and EEPROM configurability, a 4.75 V to 5.25 V operating range, and a 28-QFN 5 mm by 5 mm package. Infineon describes the device as the EZ-USBTM HX2VL very-low-power USB 2.0 hub controller. The bulk shipping form and C-grade suffix distinguish it from the separately identified CY7C65634-28LTXCT tape-and-reel ordering option. Technically, the Single-TT architecture is significant because each downstream port receives dedicated transaction-traffic handling rather than relying on a shared legacy topology. That architecture helps the controller organize USB traffic while supporting devices operating across the USB 2.0 speed set. GPIO and EEPROM configuration also allow a product designer to adapt port behavior without treating the controller as a fixed-function hub. Typical uses include compact USB hubs, USB docking stations, embedded computing systems, test equipment, and peripheral-expansion products. The controller fits designs that need one upstream USB connection and two downstream ports while preserving support for both low- and high-speed USB devices. The primary design considerations are pin assignment, exposed-pad thermal management, USB routing, power distribution, and connector protection. Designers should use the manufacturer datasheet for the complete pin map, electrical limits, reference schematics, layout guidance, and configuration procedure rather than inferring these details from the distributor summary. This page combines the verified manufacturer description, distributor availability information, and explicitly identified ordering alternatives. It also separates confirmed product facts from parameters that require direct confirmation from the manufacturer datasheet, avoiding unsupported electrical or layout assumptions.