LTC4311

1

4311fa

4311 TA01b

LTC4311

1V/DIV

1μs/DIV

TYPICAL APPLICATION

FEATURES

APPLICATIONS

DESCRIPTION

Accelerator

enhance data transmission speed and reliability for bus

limit. The LTC4311 operates at supply voltages from 1.6V

to 5.5V and is also compatible with SMBus.

The LTC4311 allows multiple device connections or a lon-

ger, more capacitive interconnect, without compromising

slew rates or bus performance, by using two slew limited

pull-up currents.

During positive bus transitions, the LTC4311 provides slew

lines to the bus pull-up voltage. During negative transitions

or steady DC levels, the currents are disabled to improve

negative slew rate, and improve low state noise margins.

An auto detect standby mode reduces supply current if

both SCL and SDA are high. When disabled, the LTC4311

goes into low (<5μA) current shutdown.

The LTC4311 is available in the 2mm

× 2mm × 0.75mm

DFN, and SC70 packages.

the LTC4311 vs Resistor Pull-Up

■

■

Ensures Data Integrity with Multiple Devices on the

■

Wide Supply Voltage Range: 1.6V to 5.5V

■

Improves Low State Noise Margin

■

Up to 400kHz Operation

■

Auto Detect Low Power Standby Mode

■

Low (<5μA) Supply Current Shutdown

■

Does Not Load Bus When Disabled or Powered Down

■

Strong Slew Limited Pull-up Current

■

±8kV Human Body Model ESD Ruggedness

■

2mm

× 2mm DFN and SC70 Packages

■

Notebook and Palmtop Computers

■

Portable Instruments

■

Battery Chargers

■

Industrial Controls

■

TV/Video Products

■

ACPI SMBus Interface

, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All

other trademarks are the property of their respective owners. Protected by U.S. Patents

including 6356140 and 6650174.

LTC4311

ENABLE

GND

2.5V

C1

0.01μF

BUS1

BUS2

DEVICE 1

CLK

IN

CLK

OUT

2.5V

DATA

IN

DATA

OUT

DEVICE N

4311 TA01a

CLK

IN

10k

CLK

OUT

DATA

IN

DATA

OUT

10k

SCL

SDA