CD4028 BCD-to-Decimal Decoder
Package SOIC, PDIP Series CD4000 (CMOS)
CD4028 overview
CD4028 belongs to 4000 Series CMOS Logic Family of Integrated Circuits (IC's) constructed with N- and P-channel enhancement mode transistors. CD4028 has BCD-to-Decimal Decoder
CD4028 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.
Datasheet
cd4028.pdf
CD4028 features
- High-Voltage Types (20V Rating)
- BCD-to-Decimal Decoding or Binary-to-Octal Decoding
- High Decoded Output Drive Capability
- 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 = 5V2V at VDD = 10V2.5V at VDD = 15V
- 1V at VDD = 5V
- 2V at VDD = 10V
- 2.5V at VDD = 15V
CD4028 pinout
| Pin | Name | Description |
|---|---|---|
| 1 | 4 | Decimal Decoded Output 4 |
| 2 | 2 | Decimal Decoded Output 1 |
| 3 | 0 | Decimal Decoded Output 0 |
| 4 | 7 | Decimal Decoded Output 7 |
| 5 | 9 | Decimal Decoded Output 9 |
| 6 | 5 | Decimal Decoded Output 5 |
| 7 | 6 | Decimal Decoded Output 6 |
| 8 | VSS | Supply Voltage |
| 9 | 8 | Decimal Decoded Output 8 |
| 10 | A | BCD Input Pin A |
| 11 | D | BCD Input Pin D |
| 12 | C | BCD Input Pin C |
| 13 | B | BCD Input Pin B |
| 14 | 1 | Decimal Decoded Output 1 |
| 15 | 3 | Decimal Decoded Output 3 |
| 16 | VDD | Drain Voltage |
Absolute maximum ratings
| Parameter | Value |
|---|---|
| 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 |
CD4028 applications
- Code Conversion
- Indication-Tube Decoder
- Address Decoding - Memory Selection Control
More about CD4028
Absolute Maximum Ratings
- Lead Temperature (During Soldering): +265oC
- At Distance 1/16 ± 1/32 Inch (1.59mm ± 0.79mm) from case for 10s Maximum
CD4028 Alternative Equivalent
CD4028
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