Highway09a Ic Datasheet Pdf _verified_ Jun 2026

The Highway09a is a single-phase, zero-crossing solid state relay designed for switching AC loads. It utilizes an internal optocoupler for isolation between the low-voltage control circuit and the high-voltage load circuit. This device is widely used in industrial automation, temperature control systems, and CNC machinery due to its noise-free operation and long electrical life.

Allows for a controlled, gradual power-up sequence to prevent component stress.

Ensure you check the document's publication date and revision history code (e.g., Rev A, Rev 1.2) to match your specific production lot batch numbers.

Note: For the exact, manufacturer-specific pinout, it is highly recommended to consult the official . 4. Typical Applications

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The is commonly used in electronic designs needing stable power delivery, particularly: LCD TV Inverter Circuits: Driving CCFL or LED backlights. SMPS Design: Resonant power supplies.

Includes built-in features such as overvoltage protection (OVP) and current sense mechanisms to safeguard the circuit.

Optimized for low-power consumption during operation, reducing overall thermal stress on the device. Pin Configuration (PDIP16)

The Highway09a is a high-performance, monolithic integrated circuit engineered for robust data routing, peripheral interfacing, and power management optimization. It functions primarily as a bridge controller and signal conditioner, offering low propagation delay and high noise immunity in EMI-heavy (electromagnetic interference) environments. Target Applications Highway09a Ic Datasheet Pdf

| Parameter | Min | Typ | Max | Unit | |--------------------|-----|-----|-----|------| | Differential output voltage | 1.5 | 2.25| 3.0 | V | | Receiver threshold | 0.5 | 0.7 | 0.9 | V | | Propagation delay (tx/rx) | - | 70 | 100 | ns |

Used for power regulation in Engine Control Units (ECUs) and instrument clusters due to its low quiescent current and wide input range.

To design with the Highway09a, you can find the detailed technical specifications and application notes at these sources:

: If the output pins are permanently pulled high or low, it usually points to a cascading failure caused by a shorted external power transistor. Sourcing & Document Access HIGHWAY09A Holtek | | Xecor The Highway09a is a single-phase, zero-crossing solid state

The HIGHWAY09A is a purpose-built microcontroller for induction heating systems. Its feature set is tailored for the specific demands of this application:

| Parameter | Condition | Min | Typ | Max | Unit | | :--- | :--- | :--- | :--- | :--- | :--- | | | At rated current | - | 1.5 | 1.8 | V AC | | Off-State Leakage Current | At rated voltage | - | - | 5 | mA | | Turn-On Time | Zero-crossing type | - | 10 | - | ms | | Turn-Off Time | | - | 10 | - | ms |

graph TD subgraph "Power Supply" A[AC Input] --> B[Bridge Rectifier & Filter]; B --> C[SMPS (VIPer12A)]; C --> D[+5V Regulator (78L05)]; D --> E[+5V for HIGHWAY09A]; end subgraph "User Interface" F[Control Panel] <-->|I2C| G[HIGHWAY09A]; G --> H[LEDs/Buzzer]; end

Includes built-in overcurrent protection, overtemperature shutdown, and reverse-battery protection. Allows for a controlled, gradual power-up sequence to