TCA9536DGKR

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TCA9536DGKR

REMOTE 4-BIT IC AND SMBUS I/O EX

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規格

Supplier Texas Instruments
Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Active
NumberofI/O 4
Interface I²C, SMBus
InterruptOutput Yes
Features POR
OutputType Open Drain
Current-OutputSource/Sink 10mA, 25mA
ClockFrequency 1 MHz
Voltage-Supply 1.65V ~ 5.5V
OperatingTemperature -40°C ~ 125°C
MountingType Surface Mount
Package/Case 8-TSSOP, 8-MSOP (0.118, 3.00mm Width)

概述

Description

The TCA9536DGKR is a Texas Instruments I2C GPIO (I/O) expander. It adds programmable I/O pins to a microcontroller via the I2C bus, letting you configure each pin as input or output, drive outputs, and read inputs. It uses a simple register interface (direction, output latch, input) and can optionally invert input polarity; it also provides an interrupt output to signal pin changes. Electricals: typically 1.65–5.5 V supply, I2C speeds up to 400 kHz (Fast-mode). The DGKR suffix denotes a specific package/version of the device. Common uses include expanding MCU GPIOs for sensors, LEDs, switches, and other peripherals in embedded systems.

Features

Key features of TCA9536DGKR:
- I2C-bus controlled 16-bit I/O expander (two 8‑bit ports)
- Quasi-bidirectional I/O pins with internal pull-ups
- Independent per-pin configuration: input or output
- Registers for Input Port, Output Port, Polarity Inversion, and Configuration
- Interrupt output (INT) for change on input pins
- I2C Fast Mode support (up to 400 kHz)
- Flexible I2C addressing (hardware address pins for multiple devices)
- Wide supply range: typically 1.65 V to 5.5 V
- RoHS-compliant package (DGKR variant is a specific packaging option)

Package

20-pin TSSOP (Thin Shrink Small Outline) package.

Pinout

- Pin count: 16 pins (TSSOP-16 package, DGKR).
- Function: I2C-bus 8-bit GPIO I/O expander; adds 8 bidirectional general-purpose I/O pins (with direction control), plus I2C interface, address pins, and an interrupt output.

Manufacturer

- Manufacturer: NXP Semiconductors.
- What kind of company: A Dutch multinational semiconductor company that designs and manufactures integrated circuits and electronic components for automotive, industrial, and consumer applications.

Application

Applications of TCA9536DGKR (I2C GPIO expander):
- I2C-based I/O port expansion for MCUs
- Driving LEDs/indicators and small relays
- Reading switches, buttons, and basic sensors
- Keyboard/keypad scanning and simple UI interfaces
- Used in home/building automation, industrial control, consumer electronics, and robotics projects.

Equivalent

Equivalent parts for TCA9536DGKR (8-bit I2C GPIO expander):
- TI TCA9534 / TCA9534A
- NXP PCF8574 / PCF8574A
- NXP PCA9534 / PCA9534A
- Microchip MCP23008
- Microchip MCP23017 (16-bit, alternative if more pins are needed)
- NXP PCA9555 (16-bit)
Note: check I/O count, voltage, package, and I2C address map for compatibility.

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