LTC1694-1 View Datasheet(PDF) - Linear Technology

Part Name

Description

Manufacturer

LTC1694-1

SMBus/I2C Accelerator

Linear Technology 

LTC1694-1

PIN FUNCTIONS

VCC (Pin 1): Power Supply Input. VCC can range from 2.7V

to 6V and requires a 0.1µF bypass capacitor to GND.

Supply current is typically 45µA when the SMBus or I2C

lines are inactive (SCL and SDA are a logic high level).

GND (Pin 2): Ground.

NC (Pin 3): No Connection.

SMBus2 (Pin 4): Active Pull-Up for SMBus.

SMBus1 (Pin 5): Active Pull-Up for SMBus.

BLOCK DIAGRAM

VCC

1

SMBus1

5

GND

2

2.2mA

SLEW RATE

DETECTOR

+

VOLTAGE

COMP

–

CHANNEL ONE

CONTROL

LOGIC

SMBus2

4

0.65V

VREF

CHANNEL TWO

(DUPLICATE OF CHANNEL ONE)

1694-1 BD

TEST CIRCUITS

VCC

5V

C1

0.1µF

5

VCC SMBus1

LTC1694-1

4

GND SMBus2

VCC

5V

200µA

PULL-UP =

2.2mA (TYP)

IPULL-UP

=

VR

1kΩ

200µA

(TYP)

TEST RAMP VOLTAGE

–

LT®1360

+

HP5082-2080

BSS284

VR

1k

–10V

1694-1 F01a

TEST RAMP

VCC

VOLTAGE

0.5V/µs

VTHRES

0V

Figure 1

4

0µA

1694-1 F01b

16941fa

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