TUSB2077A

7-PORT HUB FOR THE UNIVERSAL SERIAL BUS

WITH OPTIONAL SERIAL EEPROM INTERFACE

SLLS414 – MARCH 2000

1

POST OFFICE BOX 655303

Compliant

–

Self-powered Mode Supporting Seven

Downstream Ports

–

Bus-powered Mode Supporting Four

Downstream Ports

and Low-Speed Operations

Reporting is Provided Per Port or Ganged

External Logic Power Down

With External Serial EEPROM

EEPROM Sharing

the Need for External Pullup Resistors

Immunity to Voltage Spikes

Input or 48-MHz Input Clock

the Board Material Cost

–

3 LED Indicator Control Outputs

Enable Visualized Monitoring of 6

Different Hub/Port Status (HUBCFG,

PORTPWR, PORTDIS)

–

Output Pin Available to Disable

External Pullup Resistor on DP0 for 15

ms After Reset or After Change on

BUSPWR and Enable Easy

Implementation of On-Board Bus/Self

Power Dynamic Switching Circuitry

PWRON7

DP6

DM6

OVRCUR6

PWRON6

DP5

DM5

OVRCUR5

PWRON5

DP4

DM4

OVRCUR4

36

35

34

33

32

31

30

29

28

27

26

25

1

2

3

4

5

6

7

8

9

10

11

12

SUSPND

DP0PUR

DP0

DM0

GND

RESET

EECLK

EEDATA/GANGED

VCC

BUSPWR

PWRON1

OVRCUR1

PT PACKAGE

(TOP VIEW)

NC – No internal connection

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.

Copyright

© 1997, Texas Instruments Incorporated

JEDEC descriptor S–PQFP–G for low-profile quad flatpack (LQFP)