USB4640

Product Summary

The USB4640 is a Hi-Speed HSIC USB hub and card reader combo solution with an upstream port compliant to HSIC 1.0, a supplement to the USB 2.0 specification. The two downstream ports of the USB4640 are compliant with the USB 2.0 specification. High Speed Inter-Chip (HSIC) is a digital interconnect bus that enables the use of USB technology as a low-power chip-to-chip interconnect at speeds up to 480 Mb/s. The applications of the USB4640 include 3G/4G handsets, smartphones, cell phones, and other mobile devices, Desktop and mobile PCs, Printers, GPS navigation systems, Media players/viewers, Consumer A/V, Set-top boxes, Industrial products.

Parametrics

USB4640 absolute maximum ratings: (1)Storage Temperature, TSTOR: -55 to 150℃; (2)3.3 V supply voltage, VDD33: -0.5 to 4.0 V; (3)Voltage on USB+ and USB- pins: -0.5 to (3.3 V supply voltage + 2) ≤ 6 V; (4)Voltage on GPIO10: -0.5 to VDD33 + 0.3 V; (5)Voltage on any signal pin: -0.5 to VDD33 + 0.3 V; (6)Voltage on XTAL1: -0.5 to 3.6 V; (7)Voltage on XTAL2: -0.5 to 2.0 V.

Features

USB4640 features: (1)Compliance with the following flash media card specifications SD 2.0 / MMC 4.2 / MS 1.43 / MS-Pro 1.02 / MS-Pro-HG 1.01 / MS-Duo 1.10 / xD 1.2; (2)Low-power digital HSIC interface offers a replacement onboard host and device connection for analog USB bus cable; (3)HSIC interface enables printers, mobile PCs, ultra-mobile PCs, and cell phone products to reduce the total power budget while taking full advantage of USB connectivity and compatibility with existing USB drivers and software; (4)External 1.2 V reference allows upstream and downstream HSIC links to use the same voltage reference; (5)Supports a single external 3.3 V supply source; internal regulators provide 1.8 V internal core voltage for additional bill of materials and power savings; (6)The transaction translator (TT) in the hub supports operation of Full-Speed and Low-Speed peripherals; (7)9 K RAM | 64 K on-chip ROM; (8)Enhanced EMI rejection and ESD protection performance.

Diagrams