CD40147 belongs to 4000 Series CMOS Logic Family of Integrated Circuits (IC’s) constructed with N- and P-channel enhancement mode transistors. CD40147 has 10-line to 4-line (BCD) priority encoder
CD40147 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.
CD40147 Features
- Encodes 10line to 4-line BCD
- Active low inputs and outputs
- 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
CD40147 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
CD40147 Pinout Diagram
CD40147 Pin Description
| Pin No | Pin Name | Description |
| 1 | 4 | Data Input Line 5 |
| 2 | 5 | Data Input Line 6 |
| 3 | 6 | Data Input Line 7 |
| 4 | 7 | Data Input Line 8 |
| 5 | 8 | Data Input Line 9 |
| 6 | C | BCD Input C |
| 7 | B | BCD Input B |
| 8 | VSS | Supply Voltage |
| 9 | A | BCD Input A |
| 10 | 9 | Data Input Line 10 |
| 11 | 1 | Data Input Line 2 |
| 12 | 2 | Data Input Line 3 |
| 13 | 3 | Data Input Line 4 |
| 14 | D | BCD Input D |
| 15 | 0 | Data Input Line 1 |
| 16 | VDD | Drain Voltage |
CD40147 Circuit
Applications
- Keyboard encoding
- 10-ine to BCD encoding
- Range selection
CD40147 Alternative Equivalent
Download CD40147-10-line to 4-line (BCD) priority encoder Datasheet from the link given below.
