CD4555 Dual 1-of-4 Decoder/Demultiplexer DIP-16 (CD4555 DIP IC)
The CD4555 is a high-voltage CMOS integrated circuit containing two independent 1-of-4 decoders with active-high outputs. Each decoder features two binary address inputs and an active-low Enable input, allowing the selection of one of four mutually exclusive output lines.
This IC is primarily used for memory address decoding, digital demultiplexing, and signal routing in bus-oriented systems. It is a common component in Arduino electronics projects in India for expanding the number of output pins or selecting between different peripheral modules using a small number of microcontroller signals.
Key Features
- Dual independent 1-of-4 decoders in one package
- Mutually exclusive active-high 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 typical of 4000 series logic
- Standardized symmetrical output characteristics
- Fully static operation from DC to high frequencies
Specifications
- IC Type = Dual 1-of-4 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-High Outputs for Decoder 1
- Q02-Q32 = Active-High Outputs for Decoder 2
- E1, E2 = Enable Inputs (Active Low)
- VSS = Ground (0V)
- VDD = Positive Supply Voltage
- NC = No Connection
