Datasheet Texas Instruments TUSB2046BIRHBT — 数据表

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Documents TUSB2046B, TUSB2046I
SLLS413L – FEBRUARY 2000 – REVISED JUNE 2017 TUSB2046x 4-Port Hub for the Universal Serial Bus With Optional
Serial EEPROM Interface
1 Features 2 Applications (1) JEDEC descriptor S-PQFP-G for low-profile quad flatpack
(LQFP). 3 Description
The TUSB2046x is a 3.3-V CMOS hub device that
provides one upstream port and four downstream
ports in compliance with the Universal Serial Bus
(USB) specification as a full-speed hub. Because this
device is implemented with a digital state machine
instead of a microcontroller, no firmware
programming is required. Fully compliant USB
transceivers are integrated into the ASIC for all
upstream and downstream ports. The downstream
ports support full-speed and low-speed devices by
automatically setting the slew rate according to the
speed of the device attached to the ports. The
configuration of the BUSPWR pin selects either the …