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TCA9536DGKR

Remote 4-Bit I²C and SMBus I/O expander with configuration register and interrupt

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

TCA9536DGKR
Datasheet:

TCA9536DGKR Datasheet (PDF)
Programmable:

Not Verified
Number of I/O:

4
Interface:

I²C, SMBus
Interrupt Output:

Yes
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TCA9536DGKR General Description

The TCA9536 is a 4-bit I/O expander for the I²C bus and is designed for 1.65-V to 5.5-V V_CC operation. It provides general-purpose remote I/O expansion for most microcontroller families via the I²C interface.

The system controller can enable the I/Os as either inputs or outputs by writing to the I/O configuration register bits. The data for each input or output is kept in the corresponding input or output register. The polarity of the Input Port register can be inverted with the Polarity Inversion register. There is an additional special function register that can be used to disable the internal pull-up resistors and P3 override to an INT output.

The TCA9536 open-drain interrupt output ( when P3 is configured as INT in the special function register) is activated when any input differs from its corresponding Input Port register state and is used to indicate to the system controller that an input state has changed.

The system processor can reset the TCA9536 in the event of a timeout or other improper operation by using an I²C soft reset command, which puts the registers in their default state.

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Key Features

I²C to GPIO expander
Operating power-supply voltage range of 1.65 V to 5.5 V
5-V Tolerant I/O ports
Software Reset via I²C General Call
Software-enabled integrated pull-up resistors on P ports
P3 can be repurposed as INT output
1-MHz Fast mode plus I²C bus
Input and output configuration register
Polarity inversion register
Internal power-on reset
Power-up with all channels configured as inputs
Noise filter on SCL and SDA inputs
Latched outputs with high-current drive maximum capability for directly driving LEDs
ESD protection exceeds JESD 22
- 2000-V Human-body model (A114-A)
- 1000-V Charged-device model (C101)

Specifications

Category	Integrated Circuits (ICs)InterfaceI/O Expanders	Series	-
Programmable	Not Verified	Number of I/O	4
Interface	I²C, SMBus	Interrupt Output	Yes
Features	POR	Output Type	Open Drain
Current - Output Source/Sink	10mA, 25mA	Clock Frequency	1 MHz
Voltage - Supply	1.65V ~ 5.5V	Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount	Number of I/Os	4
Supply voltage (min) (V)	1.65	Supply voltage (max) (V)	5.5
Addresses	4	Rating	Catalog
Frequency (max) (MHz)	1	Operating temperature range (°C)	-40 to 125
feature-number-of-i-os	4	feature-number-of-addresses
feature-manual-reset	No	feature-interface-type	I2C\|SMBus
feature-interface-speed-khz	100\|400\|1000	feature-i2c-bus-interface-mode	Standard Mode\|Fast Mode\|Fast Mode Plus
feature-interrupt-output	Yes	feature-output-type	Open Drain
feature-minimum-operating-supply-voltage-v	1.65	feature-maximum-operating-supply-voltage-v	5.5
feature-maximum-sink-current-per-bit-ma	25	feature-maximum-source-current-per-bit-ma
feature-maximum-quiescent-current-ua	425	feature-packaging	Tape and Reel
feature-rad-hard		feature-pin-count	8
feature-cecc-qualified		feature-esd-protection
feature-military		feature-aec-qualified	No
feature-aec-qualified-number		feature-eccn-code	EAR99
feature-svhc	Yes	feature-svhc-exceeds-threshold	No