Texas Instruments
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CD4042BE
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CD4042BE

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Digital Logic
  • Characteristics: Quad D-Type Latch with 3-State Outputs
  • Package: PDIP-16 (Plastic Dual In-Line Package)
  • Essence: The CD4042BE is a versatile latch IC that can store and control digital data. It consists of four independent D-type latches with 3-state outputs.
  • Packaging/Quantity: The CD4042BE is typically sold in tubes or reels, containing 25 pieces per tube/reel.

Specifications

  • Supply Voltage: 3V to 18V
  • Logic Family: CMOS (Complementary Metal-Oxide-Semiconductor)
  • Operating Temperature Range: -55°C to 125°C
  • Propagation Delay: 60ns (typical)
  • Output Current: ±6mA
  • Input Capacitance: 5pF (typical)

Detailed Pin Configuration

The CD4042BE has a total of 16 pins, which are arranged as follows:

+---\/---+ Q1 |1 16| Vdd Q2 |2 15| Q4 Q3 |3 14| /OE (Output Enable) D1 |4 13| D4 D2 |5 12| D3 D3 |6 11| /CLR (Clear) D4 |7 10| GND /CP |8 9| /Q4 +--------+

Functional Features

  • Quad Latch: The CD4042BE contains four independent D-type latches, allowing for the storage of four separate digital inputs.
  • 3-State Outputs: The 3-state outputs provide flexibility in controlling the output signals, allowing for high impedance when not actively driving the output.
  • Output Enable (/OE): The /OE pin enables or disables the outputs of all four latches simultaneously.
  • Clear (/CLR): The /CLR pin resets all four latches to a known state (usually logic low).

Advantages and Disadvantages

Advantages

  • Versatile latch IC suitable for various digital logic applications.
  • Wide operating voltage range allows for compatibility with different systems.
  • Low power consumption due to CMOS technology.
  • 3-state outputs provide flexibility in signal control.

Disadvantages

  • Relatively slow propagation delay compared to some other latch ICs.
  • Limited output current capability may restrict use in certain applications.
  • PDIP package may not be suitable for space-constrained designs.

Working Principles

The CD4042BE operates based on the principles of D-type latches. Each latch stores a single bit of digital data and can be controlled independently. The inputs (D1-D4) determine the data to be stored, while the clock input (/CP) controls when the data is captured. The latch outputs (Q1-Q4) reflect the stored data, which can be enabled or disabled using the /OE pin. The /CLR pin resets all latches to a known state.

Detailed Application Field Plans

The CD4042BE finds application in various digital systems, including but not limited to: - Data storage and transfer systems - Address decoding circuits - Register banks - State machines - Control units

Detailed and Complete Alternative Models

Some alternative models to the CD4042BE that serve similar functions include: - CD4042B: Similar to CD4042BE but with different package options (SOIC, TSSOP) - CD4042A: Improved version with lower propagation delay and higher output current - CD4043B: Quad latch with complementary outputs

These alternative models provide options for different package preferences, improved performance, or specific application requirements.

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Énumérez 10 questions et réponses courantes liées à l'application de CD4042BE dans les solutions techniques

Sure! Here are 10 common questions and answers related to the application of CD4042BE in technical solutions:

  1. Q: What is CD4042BE? A: CD4042BE is a CMOS quad latch IC (integrated circuit) that can store four bits of data.

  2. Q: What is the purpose of CD4042BE? A: CD4042BE is commonly used for data storage, signal buffering, and synchronization in digital circuits.

  3. Q: What is the voltage range supported by CD4042BE? A: CD4042BE operates within a voltage range of 3V to 15V.

  4. Q: How many latch outputs does CD4042BE have? A: CD4042BE has four independent latch outputs, one for each bit of stored data.

  5. Q: Can CD4042BE be used in both parallel and serial data transfer applications? A: Yes, CD4042BE can be used in both parallel and serial data transfer applications depending on the circuit configuration.

  6. Q: What is the maximum clock frequency supported by CD4042BE? A: CD4042BE can operate at a maximum clock frequency of around 8 MHz.

  7. Q: Does CD4042BE have any built-in error detection or correction features? A: No, CD4042BE does not have any built-in error detection or correction features. It simply stores and outputs the data.

  8. Q: Can CD4042BE be cascaded to increase the number of stored bits? A: Yes, multiple CD4042BE ICs can be cascaded together to increase the number of stored bits in a circuit.

  9. Q: Is CD4042BE sensitive to noise or voltage fluctuations? A: CD4042BE is relatively immune to noise and voltage fluctuations due to its CMOS technology, but proper decoupling and power supply filtering are still recommended.

  10. Q: What are some common applications of CD4042BE? A: CD4042BE is commonly used in microcontrollers, digital signal processors, data acquisition systems, and various other digital circuits where data storage and synchronization are required.

Please note that these answers are general and may vary depending on the specific application and circuit design.