CD4042BDWRG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Logic
• Characteristics: Quad D-Type Latch with 3-State Outputs
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: A latch that can store and control the state of four digital signals simultaneously.
• Packaging/Quantity: Tape and Reel, 2500 units per reel

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 Operating Frequency: 10MHz

Detailed Pin Configuration

The CD4042BDWRG4 has a total of 16 pins arranged as follows:

+---+--+---+ Q1 --|1 +--+ 16|-- VDD Q2 --|2 15|-- Q4 Q3 --|3 14|-- GND Q4 --|4 13|-- D4 D1 --|5 12|-- D3 D2 --|6 11|-- D2 D3 --|7 10|-- D1 D4 --|8 9|-- Enable +----------+

Functional Features

• Quad D-Type Latch: The CD4042BDWRG4 can latch and store the state of four digital inputs (D1-D4) simultaneously.
• 3-State Outputs: The outputs (Q1-Q4) can be put into a high-impedance state using the enable pin, allowing multiple devices to share a common bus.
• Schmitt Trigger Inputs: The inputs have built-in Schmitt triggers, ensuring reliable and noise-immune operation.

Advantages and Disadvantages

Advantages: - Compact Size: The SOIC package allows for high-density circuit integration. - Versatility: Can be used in various digital logic applications. - 3-State Outputs: Enables efficient bus sharing between multiple devices.

Disadvantages: - Limited Operating Frequency: The CD4042BDWRG4 has a maximum operating frequency of 10MHz, which may not be suitable for high-speed applications. - Power Consumption: The IC consumes power even when in the idle state, which may be a concern in low-power applications.

Working Principles

The CD4042BDWRG4 operates based on the principles of latch-based storage and control. When the enable pin is high, the inputs (D1-D4) are latched and stored in their respective flip-flops. The outputs (Q1-Q4) reflect the stored values. When the enable pin is low, the outputs are put into a high-impedance state, allowing other devices to drive the shared bus.

Detailed Application Field Plans

The CD4042BDWRG4 can be used in various digital logic applications, including but not limited to: - Data Storage: Storing and controlling the state of digital signals in microcontrollers and digital systems. - Address Decoding: Selecting specific memory locations or peripheral devices based on address inputs. - Bus Sharing: Allowing multiple devices to share a common bus without interference.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the CD4042BDWRG4 include: - CD4042B: Similar quad D-type latch with 3-state outputs, available in different packages. - SN74HC573: Octal transparent latch with 3-state outputs, suitable for higher operating frequencies. - CD4043B: Quad NOR latch with 3-state outputs, providing an alternative logic function.

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