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TCA9535PWR
+BOMIC I/O EXPANDER I2C 16B 24TSSOP
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ManufacturerTexas Instruments
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Mfr. Part #TCA9535PWR
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Package TSSOP (PW)-24
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In Stock1845
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Specifications
| Attribute | Value |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| NumberofI/O | 16 |
| Interface | I²C, SMBus |
| InterruptOutput | Yes |
| Features | POR |
| OutputType | Push-Pull |
| Current-OutputSource/Sink | 10mA, 25mA |
| ClockFrequency | 400 kHz |
| Voltage-Supply | 1.65V ~ 5.5V |
| OperatingTemperature | -40°C ~ 85°C |
| MountingType | Surface Mount |
| Package/Case | 24-TSSOP (0.173, 4.40mm Width) |
Overview
Description
The TCA9535PWR provides 16 general-purpose I/O pins, configurable as either inputs or outputs. It supports fast-mode I²C communication up to 400 kHz and integrates features like active-low interrupt output for input state changes, and polarity inversion for input data. The device is packaged in a 24-pin TSSOP (Thin Shrink Small Outline Package).
Key benefits include reducing the need for additional microcontroller ports, easy expandability of I/O ports, and providing efficient control of numerous peripherals in applications such as home automation, industrial control, and portable electronics. The device's low power consumption and small footprint make it suitable for battery-powered applications.
Equivalent
1. PCF8575 from NXP
2. MCP23017 from Microchip Technology
3. PCA9535 from NXP
4. MAX7317 from Maxim Integrated
These alternatives offer similar functionality, such as port expansion and I2C communication, but may differ slightly in features like voltage range and current limits. Always check specific datasheets for compatibility with your application.
Features
1. I²C Interface: Supports fast-mode operation up to 400 kHz, allowing integration with microcontrollers and processors.
2. 16 GPIO Pins: Configurable as either inputs or outputs, providing flexibility for various applications.
3. Voltage Range: Operates from 1.65 V to 5.5 V, making it suitable for interfacing with a wide range of logic levels.
4. Interrupt Output: Alerts the host controller to changes in the input port states, enabling efficient polling.
5. Low Current Consumption: Offers low standby current, making it ideal for battery-powered applications.
6. Wide Temperature Range: Operates from -40°C to 85°C, suitable for industrial environments.
7. Small Package: Available in a TSSOP (PW) package, facilitating space-constrained designs.
These features make the TCA9535PWR a versatile solution for expanding digital I/O in embedded systems, consumer electronics, and industrial applications.
Pinout
1. Power and Ground:
- VCC: Power supply for the device.
- GND: Ground reference.
2. I²C Interface:
- SDA: Serial Data Line.
- SCL: Serial Clock Line.
3. Address Pins:
- A0, A1, A2: Used to set the device’s I²C address, allowing multiple devices on the same bus.
4. Reset and Interrupt:
- RESET: Active-low reset input to initialize the device.
- INT: Active-low interrupt output that signals a change in the I/O ports.
5. Port Pins:
- P00–P07, P10–P17: General-purpose I/O pins divided into two 8-bit ports (Port 0 and Port 1).
These pins enable the TCA9535PWR to expand the number of I/O ports available to a microcontroller using minimal I²C lines, making it suitable for applications requiring more GPIOs.