CD4556 belongs to the 4000 Series CMOS Logic Family of Integrated Circuits (IC’s) constructed with N- and P-channel enhancement mode transistors. CD4556 has Dual Binary 1 of 4 Decoder Inverter
CD4556 has a supply voltage range of 5V to 20V, which is much higher than any contemporary logic family. It has buffered output which improves transfer characteristics by providing very high gain. All inputs are protected against static discharge with diodes to VDD and VSS.
CD4556 Features
- High Voltage Type (20V Rating)
- CD4555BMS: Outputs High on Select
- CD4556BMS: Outputs Low on Select
- Expandable with Multiple Packages
- Standard Symmetrical Output Characteristics
- 100% Tested for Maximum Quiescent Current at 20V
- 5V, 10V, and 15V Parametric Ratings
- Maximum Input Current of 1μA at 18V Over Full Package Temperature Range; 100nA at 18V and +25oC
- Noise Margin (Over Full Package Temperature Range):
- 1V at VDD = 5V
- 2V at VDD = 10V
- 2.5V at VDD = 15V
CD4556 Specifications
Absolute Maximum Ratings
- DC Supply Voltage Range, (VDD): -0.5V to +20V (Voltage Referenced to VSS Terminals)
- Input Voltage Range, All Inputs: -0.5V to VDD +0.5V
- DC Input Current, Any One Input: ±10mA
- Operating Temperature Range: -55oC to +125oC Package Types D, F, K, H
- Storage Temperature Range (TSTG): -65oC to +150oC
- Lead Temperature (During Soldering): +265oC
- At Distance 1/16 ± 1/32 Inch (1.59mm ± 0.79mm) from case for 10s Maximum
CD4556 Pinout Diagram
CD4556 Pin Description
| Pin No | Pin Name | Description |
| 1 | E’ | Invert Enable Pin |
| 2 | A | Input Pin A |
| 3 | B | Input Pin B |
| 4 | Q0′ | Invert Output Pin 1 |
| 5 | Q1′ | Invert Output Pin 2 |
| 6 | Q2′ | Invert Output Pin 3 |
| 7 | Q3′ | Invert Output Pin 4 |
| 8 | VSS | Supply Voltage |
| 9 | Q3′ | Invert Output Pin 4 |
| 10 | Q2′ | Invert Output Pin 3 |
| 11 | Q1′ | Invert Output Pin 2 |
| 12 | Q0′ | Invert Output Pin 1 |
| 13 | B | Input Pin B |
| 14 | A | Input Pin A |
| 15 | E’ | Invert Enable Pin |
| 16 | VDD | Drain Voltage |
CD4556 Circuit
Applications
- Decoding
- Code Conversion
- Demultiplexing (Using Enable Input as a Data Input
- Memory Chip-Enable Selection
- Function Selection
CD4556 Alternative Equivalent
CD4555
Download CD4556 Dual Binary 1 of 4 Decoder Inverter Datasheet from the link given below.
