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TCA9803DGKR TI Chips TCA9803 Level Translating Bus Buffer/Repeater Ultra low power consumption

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TCA9803DGKR TI Chips TCA9803 Level Translating Bus Buffer/Repeater Ultra low power consumption

Brand Name:	TI chips
Model Number:	TCA9803DGKR
MOQ:	2500
Packaging Details:	2500PCS/reel
Payment Terms:	T/T

Detail Information

Product Description

Detail Information

Place of Origin:

China

Document:

Model:

TCA9803DGKR

Product Name:

TI Chips

Maximum Clock Frequency:

400 KHz

Encapsulation:

Operating Power Supply Current:

45 UA

Operating Power Supply Voltage:

800 MV To 3.6 V, 1.65 V To 3.6 V

Supply Ability:

1000000

Highlight:

TCA9803DGKR

TCA9803 TI Chips

Low Power Bus Buffer/Repeater

Product Description

TI chips TCA9803DGKR TCA9803 Level-Translating Bus Buffer/Repeater Ultra-low power consumption

Features

• Two-channel bidirectional buffer

• Integrated current source on B-side, requires no

external B-side resistors

• Ultra-low power consumption

• No static-voltage offset, low VOL

• I 2C bus and SMBus compatible

• 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

• Powered-off high impedance I 2C bus pins on A-

side

• Powered-off back-power protection I 2C bus pins

• Support for clock stretching and multiple master

arbitration

• Family of current source options from 0.5 mA to 3

Applications

• Servers

• Routers (routing equipment)

• Industrial equipment

• Personal computers

• Power-sensitive applications

Description

The TCA9803 is a dual-channel bidirectional buffer

intended for I 2C bus and SMBus/PMBus systems. It

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

TCA9803 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 TCA9803 is able to provide true buffering (rather

than a pass-FET solution) without using a static

voltage offset or incremental offset. This means that

the VOL on both the A and B sides of the TCA9803

are very low (approximately 0.2 V), helping to

eliminate communication issues as a result of fixed

VIL thresholds. Another key feature of the TCA9803 is

that there are no power sequencing requirements, or

power supply dependencies. VCCA can be greater

than, less than, or equal to VCCB. This gives the

system designer flexibility with how the TCA9803 is

used.

The TCA9803 is part of a four device family with

varying current source strengths (see the Device

Comparison Table).

Simplified Schematic

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products details

TCA9803DGKR TI Chips TCA9803 Level Translating Bus Buffer/Repeater Ultra low power consumption

OSRAM LED Chip

CREE LED Chip

ST IC Chips

TI Chips

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SAMSUNG IC Chips

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OSRAM LED Chip

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ST IC Chips

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