TUSB2043 Datasheet, PDF (1/16 Pages) Texas Instruments – 4-PORT HUB FOR THE UNIVERSAL SERIAL BUS WITH OPTIONAL SERIAL EEPROM INTERFACE

TUSB2043
4-PORT HUB FOR THE UNIVERSAL SERIAL BUS
WITH OPTIONAL SERIAL EEPROM INTERFACE
SLLS308A – FEBRUARY 1999 – REVISED AUGUST 1999
D Universal Serial Bus (USB) Version 1.1
Compliant
D 32-Pin TQFP Package With a 0.8 mm Pin
Pitch
D 3.3-V Low Power ASIC Logic
D Integrated USB Transceivers
D State Machine Implementation Requires No
Firmware Programming
DP0
D One Upstream Port and Four Downstream
DM0
Ports
D All Downstream Ports Support Full-Speed
V_CC
RESET
and Low-Speed Operations
EECLK
D Two Power Source Modes
– Self-Powered Mode
EEDATA/GANGED
GND
– Bus-Powered Mode
BUSPWR
D Power Switching and Over-Current
Reporting is Provided Ganged or Per Port
D Supports Suspend and Resume Operations
D Supports Programmable Vendor ID and
Product ID With External Serial EEPROM
D 3-State EEPROM Interface Allows EEPROM
Sharing
D Push-Pull Outputs for PWRON Eliminate
the Need for External Pullup Resistors
D Noise Filtering on OVRCUR Provides
Immunity to Voltage Spikes
D Package Pinout Allows 2-Layer PCB
D Migrated From Proven TUSB2040 Hub
D Lower Cost Than the TUSB2040 Hub
VF PACKAGE
(TOP VIEW)
32 31 30 29 28 27 26 25
1
24
2
23
3
22
4
21
5
20
6
19
7
18
8
17
9 10 11 12 13 14 15 16
DP4
DM4
OVRCUR4
PWRON4
DP3
DM3
OVRCUR3
PWRON3
description
The TUSB2043 is a 3.3 V CMOS hub device that provides one upstream port and four downstream ports in
compliance with the 1.1 Universal Serial Bus (USB) specification. 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
both 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 bus-powered or the
self-powered mode.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright © 1999, Texas Instruments Incorporated
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