CD4043BDWE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Logic
• Characteristics: Quad NOR R/S Latch with 3-State Outputs
• Package: SOIC-16
• Essence: The CD4043BDWE4 is a quad NOR R/S latch with 3-state outputs, designed for general-purpose digital logic applications.
• Packaging/Quantity: The CD4043BDWE4 is typically sold in reels or tubes containing multiple units.

Specifications

The CD4043BDWE4 has the following specifications:

• Supply Voltage Range: 3V to 18V
• High-Level Input Voltage: 2V to VDD
• Low-Level Input Voltage: 0V to 0.8V
• High-Level Output Voltage: VDD - 0.5V
• Low-Level Output Voltage: 0.1V
• Maximum Quiescent Current: 10μA at 5V
• Maximum Operating Frequency: 6MHz

Pin Configuration

The CD4043BDWE4 has a total of 16 pins arranged as follows:

__ __ | 1|__|16| | 2 15| | 3 14| | 4 13| | 5 12| | 6 11| | 7 10| | 8 9| ‾‾ ‾‾

Functional Features

The CD4043BDWE4 offers the following functional features:

• Quad NOR R/S Latch: The IC contains four independent NOR R/S latches, each with an active-low Set (S) and Reset (R) input.
• 3-State Outputs: The outputs of each latch can be put into a high-impedance state using the Output Enable (OE) input.

Advantages and Disadvantages

Advantages of the CD4043BDWE4 include:

• Versatility: Suitable for various digital logic applications.
• Compact Design: Integration of four latches in a single IC package saves board space.
• 3-State Outputs: Allows for bus sharing and reduces conflicts in multi-device systems.

Disadvantages of the CD4043BDWE4 include:

• Limited Operating Frequency: Maximum operating frequency of 6MHz may not be sufficient for high-speed applications.
• Power Consumption: Quiescent current of 10μA at 5V may not be ideal for low-power applications.

Working Principles

The CD4043BDWE4 operates based on the principles of NOR latch logic. Each latch consists of two cross-coupled NOR gates, forming a feedback loop. The Set (S) and Reset (R) inputs control the state of the latch, while the Output Enable (OE) input determines whether the latch's output is active or in a high-impedance state.

Application Field Plans

The CD4043BDWE4 can be used in various digital logic applications, including but not limited to:

1. Data Storage: The quad NOR R/S latch can be used to store binary data in memory circuits.
2. State Control: It can be employed to control the state of devices or systems based on specific conditions.
3. Signal Routing: The 3-state outputs enable efficient bus sharing and signal routing in multi-device systems.

Alternative Models

In addition to the CD4043BDWE4, there are several alternative models available that offer similar functionality. Some notable alternatives include:

1. CD4043BE: DIP-16 package variant of the CD4043B series.
2. MC14043B: Equivalent IC from a different manufacturer.
3. CD4043BM96: Surface-mount variant with moisture sensitivity level 1.

These alternative models can be considered based on specific requirements and availability.

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