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TCA8418RTWR from TI,Texas Instruments

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TCA8418RTWR

Manufacturer: TI

I2C Controlled Keypad Scan IC With Integrated ESD Protection 24-WQFN -40 to 85

Partnumber Manufacturer Quantity Availability
TCA8418RTWR TI 11080 In Stock

Description and Introduction

I2C Controlled Keypad Scan IC With Integrated ESD Protection 24-WQFN -40 to 85 The TCA8418RTWR is a low-voltage, I²C-controlled keypad matrix decoder manufactured by Texas Instruments (TI). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** Texas Instruments (TI)  
- **Part Number:** TCA8418RTWR  
- **Package:** WQFN-20  
- **Interface:** I²C  
- **Supply Voltage Range:** 1.65V to 3.6V  
- **Operating Temperature Range:** -40°C to +85°C  
- **Keypad Matrix Support:** 8x8 (64 keys)  
- **Interrupt Output:** Configurable for key press/release events  
- **Debounce Time:** Programmable (default: 10ms)  
- **I²C Clock Frequency:** Up to 400kHz (Fast-mode)  

### **Descriptions:**
- The TCA8418RTWR is a keypad decoder IC that interfaces with a matrix keypad and communicates via I²C.  
- It eliminates the need for a microcontroller to scan rows and columns, reducing firmware complexity.  
- Supports key press and release detection with interrupt capability.  
- Designed for low-power applications, making it suitable for battery-operated devices.  

### **Features:**
- **Low-Voltage Operation:** Works from 1.65V to 3.6V.  
- **Key Detection:** Detects key presses and releases independently.  
- **Interrupt Output:** Alerts the host processor of key events without polling.  
- **Programmable Debounce:** Adjustable debounce time for noise filtering.  
- **Internal Pull-Up Resistors:** Eliminates the need for external pull-ups on rows.  
- **Auto-Sleep Mode:** Reduces power consumption when inactive.  
- **I²C Address Selection:** Three configurable address pins for multiple devices on the same bus.  

This information is strictly based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

I2C Controlled Keypad Scan IC With Integrated ESD Protection 24-WQFN -40 to 85

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