CD4055BPWRE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Logic
• Characteristics: CMOS, 7-segment display driver
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: BCD-to-7-segment latch/decoder/driver
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

The CD4055BPWRE4 is a CMOS integrated circuit that serves as a BCD-to-7-segment latch/decoder/driver. It is designed to convert binary-coded decimal (BCD) input into signals suitable for driving common-cathode 7-segment displays. The IC operates on a wide supply voltage range of 3V to 18V, making it compatible with various digital logic systems.

Detailed Pin Configuration

The CD4055BPWRE4 package consists of 16 pins arranged as follows:

1. Pin 1: BCD Input A
2. Pin 2: BCD Input B
3. Pin 3: BCD Input C
4. Pin 4: BCD Input D
5. Pin 5: Lamp Test Input
6. Pin 6: Ripple Blanking Input
7. Pin 7: Latch Enable Input
8. Pin 8: Ground (GND)
9. Pin 9: Segment Output G
10. Pin 10: Segment Output F
11. Pin 11: Segment Output E
12. Pin 12: Segment Output D
13. Pin 13: Segment Output C
14. Pin 14: Segment Output B
15. Pin 15: Segment Output A
16. Pin 16: VDD (Supply Voltage)

Functional Features

The CD4055BPWRE4 offers the following functional features:

• BCD-to-7-segment decoding: Converts BCD input into corresponding 7-segment display signals.
• Latch functionality: Allows the input data to be latched and held until a new input is received.
• Lamp test mode: Enables all segments of the 7-segment display to be turned on for testing purposes.
• Ripple blanking: Provides a means to suppress leading zero suppression in cascaded displays.
• Latch enable: Controls the latching of input data.

Advantages and Disadvantages

Advantages of the CD4055BPWRE4 include:

• Wide supply voltage range allows compatibility with various systems.
• CMOS technology offers low power consumption.
• Compact TSSOP package enables space-efficient designs.
• Versatile functionality supports diverse applications.

Disadvantages of the CD4055BPWRE4 include:

• Limited maximum operating frequency compared to some alternative models.
• Lack of built-in current limiting resistors for segment outputs may require additional external components.

Working Principles

The CD4055BPWRE4 operates by receiving BCD input through pins 1 to 4. The internal decoding logic converts the BCD input into appropriate segment output signals, which are then driven through pins 9 to 15. The latch enable input (pin 7) controls the latching of the input data, while the ripple blanking input (pin 6) and lamp test input (pin 5) provide additional control functionalities.

Detailed Application Field Plans

The CD4055BPWRE4 finds application in various fields, including:

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

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the CD4055BPWRE4 include:

1. CD4511B: BCD-to-7-segment latch/decoder/driver with built-in current limiting resistors.
2. CD74HC4511E: High-speed CMOS BCD-to-7-segment latch/decoder/driver.
3. SN74LS47N: BCD-to-7-segment decoder/driver with open-collector outputs.

These alternative models provide options with different features and specifications, allowing designers to choose the most suitable IC for their specific requirements.

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