P82B96DGKR datasheet(3/26 Pages) TI

Part #	P82B96DGKR

Description	DUAL BIDIRECTIONAL BUS BUFFER

Download	26 Pages

Scroll/Zoom	100%

Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

Logo

3 / 26 page

www.ti.com

P82B96

Sx (SDA)

Sy (SCL)

Ry (RxD, SCL)

Ty (TxD, SCL)

Rx (RxD, SDA)

Tx (TxD, SDA)

1

7

4

GND

6

5

2

3

8

V

(2–15V)

CC

Functional Description

Sx and Sy

Tx and Ty

P82B96

DUAL BIDIRECTIONAL BUS BUFFER

SCPS144A – MAY 2006 – REVISED SEPTEMBER 2006

FUNCTIONAL BLOCK DIAGRAM

The I2C pins, Sx and Sy, are designed to interface with a normal I2C bus. The logic threshold-voltage levels on

the I2C bus are independent of the supply VCC. The maximum I

2C bus supply voltage is 15 V, and the specified

static sink current is 3 mA.

Sx and Sy have two identical buffers. Each buffer is made up of two logic signal paths. The first one, named Tx

or Ty, is a forward path from the I2C interface pin, which drives the buffered bus. The second one, named Rx or

Ry, is a reverse signal path from the buffered bus input to drive the I2C bus interface.

There are two purposes for these paths: to sense the voltage state of the I2C pin (Sx or Sy) and transmit this

state to Tx or Ty, respectively, and to detect the state of the Rx or Ry and pull the I2C pin low when Rx or Ry is

low.

Tx and Ty are open-collector outputs without ESD protection diodes to VCC. Each pin may be connected via a

pullup resistor to a supply voltage in excess of VCC, as long as the 15-V rating is not exceeded. Tx and Ty have

a larger current-sinking capability than a normal I2C device and can sink a static current of greater than 30 mA.

They also have dynamic pulldown capability of 100-mA, typically.

A logic low is transmitted to Tx or Ty only when the voltage at the I2C pin (Sx or Sy) is below 0.6 V. A logic low

at Rx or Ry causes the I2C bus (Sx or Sy) to be pulled to a logic low level in accordance with I2C requirements

(maximum 1.5 V in 5-V applications), but not low enough to be looped back to the Tx or Ty output and cause the

buffer to latch low.

The minimum low level that the P82B96 can achieve on the I2C bus by a low at Rx or Ry typically is 0.8 V.

If VCC fails, neither the I

2C pins nor the Tx or Ty outputs are held low. Their open-collector configuration allows

them to be pulled up to the rated maximum of 15 V without VCC present. The input configuration on Sx, Sy, Rx,

and Ry also presents no loading of external signals when VCC is not present.

The effective input capacitance of any signal pin, measured by its effect on bus rise times, is less than 4 pF for

all bus voltages and supply voltages, including VCC = 0 V.

3

Submit Documentation Feedback

Similar Part No. - P82B96DGKR

Manufacturer	Part #	Datasheet	Description
Texas Instruments	P82B96DGKR	658Kb / 28P	[Old version datasheet] DUAL BIDIRECTIONAL BUS BUFFER
	P82B96DGKR	1Mb / 34P	[Old version datasheet] I2C Compatible Dual Bidirectional Bus Buffer
	P82B96DGKRG4	658Kb / 28P	[Old version datasheet] DUAL BIDIRECTIONAL BUS BUFFER
	P82B96DGKRG4	1Mb / 34P	[Old version datasheet] I2C Compatible Dual Bidirectional Bus Buffer

More results

Similar Description - P82B96DGKR

Manufacturer	Part #	Datasheet	Description
NXP Semiconductors	PCA9600	499Kb / 30P	Dual bidirectional bus buffer Rev. 04-11 November 2009
NXP Semiconductors	P82B96	514Kb / 32P	Dual bidirectional bus buffer Rev. 08-10 November 2009
Texas Instruments	P82B96	658Kb / 28P	[Old version datasheet] DUAL BIDIRECTIONAL BUS BUFFER
NXP Semiconductors	PCA9600	382Kb / 31P	Dual bidirectional bus buffer Rev. 5-5 May 2011
	P82B96TD-T	514Kb / 32P	Dual bidirectional bus buffer Rev. 08-10 November 2009
	PCA9601	389Kb / 32P	Dual bidirectional bus buffer Rev. 2-6 May 2011
	P82B96	165Kb / 26P	Dual bidirectional bus buffer Rev. 06-31 January 2008
Texas Instruments	P82B96	1Mb / 34P	[Old version datasheet] I2C Compatible Dual Bidirectional Bus Buffer
Toshiba Semiconductor	TC40H242P	206Kb / 4P	QUAD BIDIRECTIONAL BUS BUFFER
NXP Semiconductors	P82B96TD-112	514Kb / 32P	Dual bidirectional bus buffer Rev. 08 ??10 November 2009 Rev. 08-10 November 2009

More results

P82B96DGKR Datasheet(PDF) 3 Page - Texas Instruments

P82B96DGKR Datasheet(HTML) 3 Page - Texas Instruments

Similar Part No. - P82B96DGKR

Similar Description - P82B96DGKR

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

Datasheet Download

Link URL