CH334X

WCH
CH334/335 Datasheet V2.6 https://wch-ic.com Overview CH334 and CH335 are USB2.0 protocol compliant 4-port USB HUB controller chips, supporting USB2.0 highspeed and full-speed for upstream ports, and USB2.0 high-speed 480Mbps, full-speed 12Mbps and low-speed 1.5Mbps for downstream ports, supporting not only low-cost STT mode (single TT schedules 4 downstream ports in time share), but also suppo...
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Технические характеристики

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Корпус QFN-36
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Тип Наименование Корпус Упаковка i Тип Примечания T раб Карточка
товара
P= CH334Q (WCH)
 
QFN-36 на поддоне 490 шт
 
 — 4-port USB2.0 high-speed HUB controller

Файлы 1

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CH334/335 Datasheet V2.6 https://wch-ic.com Overview CH334 and CH335 are USB2.0 protocol compliant 4-port USB HUB controller chips, supporting USB2.0 highspeed and full-speed for upstream ports, and USB2.0 high-speed 480Mbps, full-speed 12Mbps and low-speed 1.5Mbps for downstream ports, supporting not only low-cost STT mode (single TT schedules 4 downstream ports in time share), but also supports high performance MTT mode (4 TTs each corresponding to 1 port, concurrent processing). Industrial-grade design with streamlined peripherals for use in computer and industrial control machine motherboards, peripherals, embedded systems, etc. Features - 4-port USB HUB, providing 4 USB 2.0 downstream ports, backward compatible with USB 1.1 protocol specification - Support each port independent power control or GANG overall linkage power control Support independent overcurrent detection of each port or overall overcurrent detection of GANG, support 5V tolerant overcurrent signal input - Support high performance MTT mode, providing independent TT for each port to achieve full bandwidth concurrent transmission, with 4 times the total bandwidth of STT - Support port status LED indicators Configurable via external EEPROM to support composite devices, non-removable devices, custom VIDs, PIDs and port configurations - Built-in information memory, for industry-specific needs can be customized in bulk manufacturer or product information and configuration, no need EEPROM - Self-developed dedicated USB PHY, LPM low-power consumption technology, significantly reduced compared to the first generation of HUB chips, support self-powered or bus-powered - Self-powered or bus-powered mode configurable via I/O pins or external EEPROM Provides crystal oscillator with built-in capacitor, supports external 12MHz input, and built-in PLL provides 480MHz clock for USB PHY - Built-in professional high-precision clock, you can choose to remove the external 12MHz crystal to save costs, reduce size and reduce EMI - Built-in 1.5KΩ pull-up resistor on the upstream port, built-in pull-down resistor on the downstream port required for USB Host, streamlined periphery - Built-in LDO linear buck regulator converts USB bus supply voltage to 3.3V operating power for the chip CH335 supports MCU control upstream port and 1# downstream port exchange USB pins have 6KV enhanced ESD performance, Class 3A Industrial grade temperature range: -40~85℃ QFN28, QFN24, QFN16, QSOP28 and other packages available PDF
Документация на CH334X 

Дата модификации: 26.08.2025

Размер: 433.5 Кб

32 стр.

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