CD4556 Dual 1-of-4 Inverting Decoder/Demultiplexer DIP-16 (CD4556 DIP IC)
The CD4556 is a high-voltage CMOS integrated circuit consisting of two independent 1-of-4 decoders with active-low outputs. Each decoder features two binary address inputs and an active-low Enable input. When enabled, the selected output line goes low, while all other non-selected outputs remain high, making it the inverting counterpart to the CD4555.
This IC is primarily used for memory address decoding, digital demultiplexing, and active-low signal routing in bus-oriented systems. It is an essential component for Arduino electronics projects in India that require driving active-low peripherals or expanding output capabilities using minimal microcontroller pins.
Key Features
- Dual independent 1-of-4 decoders in one package
- Mutually exclusive active-low outputs
- Active-low Enable input for each decoder section
- High-voltage CMOS technology for superior noise immunity
- Wide operating supply voltage range for diverse systems
- Low power consumption for battery-efficient designs
- Standardized symmetrical output characteristics
- Fully static operation from DC to high frequencies
Specifications
- IC Type = Dual 1-of-4 Inverting Decoder
- Logic Family = CD4000
- Supply Voltage = 3V to 18V
- Package Type = DIP
- Number of Pins = 16
- Mounting Type = Through-Hole
- Propagation Delay = 150ns at 5V
- Operating Temperature = -55 to 125 degrees Celsius
Interfaces
- A1, B1 = Address Inputs for Decoder 1
- A2, B2 = Address Inputs for Decoder 2
- Q01-Q31 = Active-Low Outputs for Decoder 1
- Q02-Q32 = Active-Low Outputs for Decoder 2
- E1, E2 = Enable Inputs (Active Low)
- VSS = Ground (0V)
- VDD = Positive Supply Voltage
- NC = No Connection
