4028 IC CMOS BCD-To-Decimal Decoder
The 4028 IC CMOS BCD-To-Decimal Decoder, commonly known as the CD4028B, is a high-performance integrated circuit designed for decoding binary-coded decimal (BCD) inputs into decimal outputs. This CMOS device features buffering on all four inputs, sophisticated decoding logic gates, and 10 output buffers, enabling seamless conversion from a 4-bit BCD code to a single active-high output among 10 lines. When a BCD code is applied to the inputs A through D, the corresponding decimal output goes high, while the others remain low.
Features:
- BCD-to-decimal decoding function with 4-bit BCD input conversion to a one-of-ten active output.
- Positive logic inputs and outputs for straightforward logic interfacing.
- High decoded output drive capability to support multiple downstream loads.
- Wide supply voltage operation with parametric ratings at 5 V, 10 V, and 15 V.
- Excellent noise margin across the full temperature range.
- Standardized CMOS output characteristics with low quiescent current.
Specifications:
| Parameter | Value |
|---|---|
| Supply Voltage Range | 3VDC-18VDC |
| Operating Temperature Range | -55°C to 125°C |
| Quiescent Current (Max at 20VDC) | 100µA |
| Propagation Delay (Typical at 15VDC) | 150ns |
| Input High Voltage (Min at 15VDC) | 10.5V |
| Input Low Voltage (Max at 15VDC) | 4.5V |
| Output Drive Capability | 2 low-power TTL loads |
| Package Type | DIP-16 |
Pin Configuration:
| Pin Number | Pin Name | Function/Description |
|---|---|---|
| 1 | Output 4 | Decoded Decimal Output 4 |
| 2 | Output 2 | Decoded Decimal Output 2 |
| 3 | Output 0 | Decoded Decimal Output 0 |
| 4 | Output 7 | Decoded Decimal Output 7 |
| 5 | Output 9 | Decoded Decimal Output 9 |
| 6 | Output 5 | Decoded Decimal Output 5 |
| 7 | Output 6 | Decoded Decimal Output 6 |
| 8 | VSS | Ground (0 V) |
| 9 | Output 8 | Decoded Decimal Output 8 |
| 10 | A | BCD Input A (LSB) |
| 11 | D | BCD Input D (MSB) |
| 12 | C | BCD Input C |
| 13 | B | BCD Input B |
| 14 | Output 1 | Decoded Decimal Output 1 |
| 15 | Output 3 | Decoded Decimal Output 3 |
| 16 | VDD | Positive Supply Voltage |
Footprint:
Applications:
Applications:- Digital code conversion in logic systems.
- Address decoding and memory selection control.
- Indicator tube and LED display decoding circuits.
- Digital control panels and user interface logic.
- Microcontroller and processor interfacing for output expansion.
- BCD input decoding for counters and time-base systems.
Package Include:
1x 4028 IC CMOS BCD-To-Decimal Decoder Dip-16
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