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LM567CM from NSC,National Semiconductor

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LM567CM

Manufacturer: NSC

Tone Decoder

Partnumber Manufacturer Quantity Availability
LM567CM NSC 20 In Stock

Description and Introduction

Tone Decoder The LM567CM is a tone decoder manufactured by National Semiconductor (NSC).  

### **Specifications:**  
- **Type:** Tone Decoder / Phase-Locked Loop (PLL)  
- **Operating Voltage:** 4.75V to 9V  
- **Operating Frequency Range:** 0.01Hz to 500kHz  
- **Bandwidth Adjustable:** Via external components  
- **Output Configuration:** Open-collector (sink up to 100mA)  
- **Package:** 8-pin SOIC (CM suffix)  

### **Descriptions:**  
The LM567CM is designed to detect a specific frequency within a given bandwidth. It consists of a phase-locked loop (PLL) with an integrated voltage-controlled oscillator (VCO) and a quadrature detector. When the input signal matches the programmed frequency (set by external resistors and capacitors), the output activates.  

### **Features:**  
- **Frequency Lock Detection:** Reliable tone recognition  
- **Adjustable Bandwidth:** Controlled via external capacitor  
- **High Noise Immunity:** Rejects out-of-band signals  
- **Low Power Consumption:** Suitable for battery-operated devices  
- **Wide Supply Range:** Compatible with 5V and 9V systems  
- **Open-Collector Output:** Allows direct drive of relays or LEDs  

This IC is commonly used in remote control systems, telemetry, and frequency-selective applications.

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