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See Technical Specifications

TCA9535PWR +BOM

16-bit 1.65- to 5.5-V I2C/SMBus I/O expander with interrupt & config registers

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

TCA9535PWR
Datasheet:

TCA9535PWR Datasheet (PDF)
Programmable:

Not Verified
Number Of I/O:

16
Interface:

I²C, SMBus
Interrupt Output:

Yes
EDA/CAD Models:

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TCA9535PWR General Description

The TCA9535 is a 24-pin device that provides 16 bits of general purpose parallel input and output (I/O) expansion for the two-line bidirectional I2C bus or (SMBus) protocol. The device can operate with a power supply voltage ranging from 1.65 V to 5.5 V.

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 TCA9535 is identical to the TCA9555, except that the TCA9535 does not include the internal I/O pull-up resistor, which requires pull-ups and pull-downs on unused I/O pins when configured as an input and undriven.

Key Features

I²C to Parallel Port Expander
Wide Power Supply Voltage Range of 1.65 V to 5 V
Low Standby-Current Consumption
Open-Drain Active-Low Interrupt Output
5-V Tolerant I/O Ports
400-kHz Fast I2C Bus
Polarity Inversion Register
Address by Three Hardware Address Pins for Use of up to Eight Devices
Latched Outputs With High-Current Drive Capability for Directly Driving LEDs
Latch-Up Performance Exceeds 100mA Per JESD78, ClassII
ESD Protection Exceeds JESD22
- 2000-V Human-Body Model (A114-A)
- 1000-V Charged-Device Model (C101)

Application

• Servers
• Routers (telecom switching equipment)
• Personal computers
• Personal electronics (for example, gaming consoles)
• Industrial automation
• Products with GPIO-limited processors

Specifications

Category	Integrated Circuits (ICs)InterfaceI/O Expanders	Series	-
Programmable	Not Verified	Number of I/O	16
Interface	I²C, SMBus	Interrupt Output	Yes
Features	POR	Output Type	Push-Pull
Current - Output Source/Sink	10mA, 25mA	Clock Frequency	400 kHz
Voltage - Supply	1.65V ~ 5.5V	Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount	Base Product Number	TCA9535