TCA9802

GND

4

1

VCCA

3

SDAA

2

SCLA

7

SCLB

6

SDAB

I

(e.g. Processor)

5

EN

8

VCCB

I

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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

TCA9802

SCPS266 – MARCH 2017

1

1 Features

1

•

Two-Channel Bidirectional Buffer

•

Integrated Current Source on B-side, Requires No

External B-Side Resistors

•

Ultra-Low Power Consumption

•

•

•

Operating Supply Voltage Range of 0.8 V to 3.6 V

on A-side

•

Operating Supply Voltage Range of 1.65 V to 3.6

V on B-side

•

Active-High Repeater Enable Input

•

Side

•

•

Support for Clock Stretching and Multiple Master

Arbitration

•

Family of Current Source Options from 0.5 mA to

3 mA

2 Applications

•

Servers

•

Routers (Routing Equipment)

•

Industrial Equipment

•

Personal Computers

•

Power-Sensitive Applications

3 Description

The TCA9802 is a dual-channel bidirectional buffer

provides bidirectional level shifting (up-translation and

down-translation) between low voltages (down to 0.8

V) and higher voltages (1.65 V to 3.6 V). The

TCA9802 features an internal current source on the

B-side of the device, allowing the removal of external

pull-up resistors on the B-side. The current source

also provides an improved rise time and ultra-low

power consumption.

The TCA9802 is able to provide true buffering (rather

than a pass-FET solution) without using a static

voltage offset or incremental offset. This means that

are very low (approximately 0.2 V), helping to

eliminate communication issues as a result of fixed

that there are no power sequencing requirements, or

system designer flexibility with how the TCA9802 is

used.

The TCA9802 is part of a four device family with

varying current source strengths (see the Device

Comparison Table).

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TCA9802

VSSOP (8)

3.00 mm × 3.00 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Device Comparison

Part Number

Value

TCA9800

0.5 mA

TCA9801

1 mA

TCA9802

2 mA

TCA9803

3 mA

Simplified Schematic