CD4028BPW

Product Overview

• Category: Integrated Circuit (IC)
• Use: BCD-to-Decimal Decoder
• Characteristics: High-speed, low-power consumption
• Package: PDIP (Plastic Dual In-line Package)
• Essence: Converts Binary-Coded Decimal (BCD) input to a 7-segment display output
• Packaging/Quantity: Available in reels or tubes, quantity varies based on supplier

Specifications

• Supply Voltage Range: 3V to 18V
• Input Voltage Range: 0V to VDD
• Output Current: ±5mA
• Operating Temperature Range: -55°C to +125°C
• Propagation Delay Time: 60ns (typical)

Pin Configuration

The CD4028BPW has a total of 16 pins. The pin configuration is as follows:

1. A
2. B
3. C
4. D
5. LT (Lamp Test)
6. BI/RBO (Blanking Input/ Ripple Blanking Output)
7. GND (Ground)
8. F
9. E
10. COM (Common Cathode)
11. a
12. b
13. c
14. d
15. e
16. f/g

Functional Features

• Converts BCD input to a 7-segment display output
• Can drive common cathode or common anode displays
• Lamp Test and Blanking Input for additional control
• Low power consumption
• High-speed operation

Advantages and Disadvantages

Advantages: - Versatile BCD-to-decimal decoding functionality - Wide supply voltage range allows for flexibility in various applications - Low power consumption makes it suitable for battery-powered devices - High-speed operation enables real-time display updates

Disadvantages: - Limited number of inputs restricts the range of BCD values that can be decoded - Requires additional circuitry for driving multiplexed displays

Working Principles

The CD4028BPW is a BCD-to-decimal decoder IC. It takes a 4-bit Binary-Coded Decimal (BCD) input and converts it into a corresponding 7-segment display output. The inputs A, B, C, and D represent the BCD code, while the outputs a to g control the segments of the 7-segment display.

When a valid BCD input is applied, the CD4028BPW decodes it and activates the appropriate combination of segments to display the corresponding decimal digit on a 7-segment display. The LT pin allows for lamp testing, while the BI/RBO pin provides blanking control.

Detailed Application Field Plans

The CD4028BPW is commonly used in various applications where BCD-to-decimal decoding and display are required. Some of the typical application fields include:

1. Digital clocks and timers
2. Counters and frequency dividers
3. Industrial control systems
4. Measurement instruments
5. Consumer electronics

Alternative Models

There are several alternative models available that offer similar BCD-to-decimal decoding functionality. Some popular alternatives to the CD4028BPW include:

1. CD74HC4511E
2. SN74LS47N
3. HEF4543BP
4. MC14543BCP

These alternative models may have slightly different specifications and pin configurations, so it is important to refer to their respective datasheets for detailed information.

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