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TCA9535PWR Fiches technique(PDF) 1 Page - Texas Instruments

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No de pièce TCA9535PWR
Description  LOW VOLTAGE 16-BIT I2C AND SMBus LOW-POWER I/O EXPANDER WITH INTERRUPT OUTPUT AND CONFIGURATION REGISTERS
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

TCA9535PWR Fiches technique(HTML) 1 Page - Texas Instruments

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1
FEATURES
A0
P17
P16
P15
P14
P13
24
22
21
20
19
23
7
9
10
11
12
8
P00
P01
P02
P03
P04
P05
1
2
3
4
5
6
18
17
16
15
14
13
Exposed
Center
Pad
INT
A1
A2
P00
P01
P02
P03
P04
P05
P06
P07
GND
V
CC
SDA
SCL
A0
P17
P16
P15
P14
P13
P12
P11
P10
24
23
22
21
20
19
18
17
16
15
14
13
1
2
3
4
5
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7
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DESCRIPTION/ORDERING INFORMATION
TCA9535
www.ti.com........................................................................................................................................... SCPS201A – AUGUST 2009 – REVISED SEPTEMBER 2009
LOW VOLTAGE 16-BIT I2C AND SMBus LOW-POWER I/O EXPANDER
WITH INTERRUPT OUTPUT AND CONFIGURATION REGISTERS
• Address by Three Hardware Address Pins for
Use of up to Eight Devices
• Low Standby-Current Consumption of
3
µA Max
• Latched Outputs With High-Current Drive
Capability for Directly Driving LEDs
• I2C to Parallel Port Expander
• Latch-Up Performance Exceeds 100 mA Per
• Open-Drain Active-Low Interrupt Output
JESD 78, Class II
• 5-V Tolerant I/O Ports
• ESD Protection Exceeds JESD 22
• Compatible With Most Microcontrollers
2000-V Human-Body Model (A114-A)
• 400-kHz Fast I2C Bus
1000-V Charged-Device Model (C101)
• Polarity Inversion Register
PW PACKAGE
RTW PACKAGE
(TOP VIEW)
(TOP VIEW)
The exposed center pad, if used, must be
connected as a secondary ground or left
electrically open.
This 16-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 1.65-V to 5.5-V VCC operation. It
provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface [serial clock
(SCL), serial data (SDA)].
The TCA9535 consists of two 8-bit Configuration (input or output selection), Input Port, Output Port, and Polarity
Inversion (active-high or active-low operation) registers. At power on, the I/Os are configured as inputs. The
system master can enable the I/Os as either inputs or outputs by writing to the I/O configuration bits. The data for
each input or output is kept in the corresponding Input or Output Port register. The polarity of the Input Port
register can be inverted with the Polarity Inversion register. All registers can be read by the system master.
The system master can reset the TCA9535 in the event of a timeout or other improper operation by utilizing the
power-on reset feature, which puts the registers in their default state and initializes the I2C/SMBus state machine.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2009, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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