The 74HC138 is a high-speed CMOS 3-to-8 line decoder/demultiplexer IC designed for a wide range of digital logic applications. It is housed in a compact SMD package, making it suitable for high-density circuit board layouts. Here’s a detailed description of the product:
Key Features:
- Type: 3-to-8 Line Decoder/Demultiplexer
- Package: SMD (Surface Mount Device)
- Logic Family: 74HC (High-Speed CMOS)
- Operating Voltage: 2V to 6V
- Low Power Consumption: CMOS technology ensures low static power consumption
- High-Speed Operation: Fast propagation delay
- Active Low Outputs: Provides eight active-low outputs
Applications:
- Digital Logic Circuits: Ideal for general-purpose digital logic decoding applications
- Address Decoding: Useful in memory address decoding and microprocessor interfacing
- Data Routing: Suitable for routing data in digital systems
- Control Systems: Used in control and automation systems for decoding signals
- Multiplexing: Can be used in multiplexing applications where multiple data lines are controlled
Pin Configuration:
- Pin 1 (A): Address input A
- Pin 2 (B): Address input B
- Pin 3 (C): Address input C
- Pin 4 (G2A): Enable input 2A (active low)
- Pin 5 (G2B): Enable input 2B (active low)
- Pin 6 (G1): Enable input 1 (active high)
- Pin 7 (Y7): Output 7 (active low)
- Pin 8 (GND): Ground
- Pin 9 (Y6): Output 6 (active low)
- Pin 10 (Y5): Output 5 (active low)
- Pin 11 (Y4): Output 4 (active low)
- Pin 12 (Y3): Output 3 (active low)
- Pin 13 (Y2): Output 2 (active low)
- Pin 14 (Y1): Output 1 (active low)
- Pin 15 (Y0): Output 0 (active low)
- Pin 16 (VCC): Supply voltage
Electrical Characteristics:
- Supply Voltage (Vcc): 2V to 6V
- Input Voltage (Vin): 0V to Vcc
- Output Voltage (Vout): 0V to Vcc
- Low Input Current (Iin): ±1μA max
- Low Output Current (Iout): ±25mA max
- Propagation Delay: Typically 15ns at Vcc = 5V
- Power Consumption: Low power consumption due to CMOS technology
Note: Product images are for illustrative purposes only and may differ from the actual product.
