NE567 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
NE567 is a highly stable tone decoder and frequency detector IC from Texas Instruments used to detect specific frequencies in audio and communications systems. It integrates a voltage-controlled oscillator, quadrature phase detector, and output driver in an 8-pin DIP package. Available competitively priced and in stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- NE567 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Highly stable tone decoding with adjustable center frequency set by a single external RC network, enabling flexible frequency selection from 0.01 Hz to 500 kHz
- Built-in quadrature phase detector provides high noise immunity and reliable detection even at low input signal levels
- Integrated output transistor with 100 mA current sinking capability directly drives relays, LEDs, and logic loads without external driver circuits
- Industry-standard 8-pin DIP package with decades of production history ensures broad availability and straightforward PCB integration
Applications
The NE567 is used in tone detection circuits for telecommunications, remote control receivers, and frequency-selective alarm systems where a specific audio or sub-audio tone must be reliably identified in the presence of noise. It is commonly applied in touch-tone DTMF decoding, ultrasonic rangefinder receivers, and carrier-present detection circuits in industrial control systems. Its simplicity and robustness make it a classic choice for single-tone frequency detection in both prototyping and production applications.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the NE567 and what is its primary function?
The NE567 is a phase-locked loop (PLL) based tone decoder IC from Texas Instruments. Its primary function is to detect a specific input frequency (tone) and activate an output when the input signal matches the center frequency programmed by an external RC network, covering a range from 0.01 Hz to 500 kHz.
How is the center frequency of the NE567 set?
The center frequency of the NE567 is set by a single external resistor (R) and capacitor (C) connected to the timing pins. The formula f0 = 1/(1.1 × R × C) defines the center frequency, giving designers a simple and precise method to target any tone frequency within the device's 0.01 Hz to 500 kHz operating range.
What output does the NE567 provide when a tone is detected?
When the NE567 detects an input tone matching its center frequency within the programmed detection bandwidth, its open-collector output transistor switches LOW and can sink up to 100 mA. This allows direct connection to indicator LEDs, relays, and TTL/CMOS logic inputs without requiring an external driver stage.
What package is the NE567 available in?
The NE567 is available in an 8-pin DIP (Dual In-Line Package) through-hole package, which is easy to breadboard, hand-solder, and prototype with. This classic package type ensures compatibility with standard DIP sockets and universal PCB layouts commonly used in hobby, educational, and industrial designs.
What are common application areas for the NE567 tone decoder?
Common applications for the NE567 include single-tone DTMF decoding, FSK demodulation, ultrasonic receiver circuits, carrier-detect circuits in data communications, industrial process control alert systems, and remote control receivers that activate on a specific transmitted audio or ultrasonic frequency.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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