CD4042BDR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Logic
• Characteristics: Quad D-Type Latch with 3-State Outputs
• Package: SOIC-16
• Essence: The CD4042BDR is a quad D-type latch with 3-state outputs, designed for general-purpose storage applications in digital systems.
• Packaging/Quantity: The CD4042BDR is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: 3V to 18V
• Logic Family: CMOS
• Number of Inputs: 4
• Number of Outputs: 4
• Output Type: 3-State
• Operating Temperature Range: -55°C to +125°C

Detailed Pin Configuration

The CD4042BDR has a total of 16 pins. The pin configuration is as follows:

1. Pin 1: Data Input (D0)
2. Pin 2: Data Input (D1)
3. Pin 3: Data Input (D2)
4. Pin 4: Data Input (D3)
5. Pin 5: Enable Input (E)
6. Pin 6: Clock Input (CLK)
7. Pin 7: Output Enable Input (OE)
8. Pin 8: Ground (GND)
9. Pin 9: Output (Q0)
10. Pin 10: Output (Q1)
11. Pin 11: Output (Q2)
12. Pin 12: Output (Q3)
13. Pin 13: VDD
14. Pin 14: Data Input (D0)
15. Pin 15: Data Input (D1)
16. Pin 16: Data Input (D2)

Functional Features

• Quad D-Type Latch: The CD4042BDR consists of four independent D-type latch circuits, allowing for simultaneous storage of four bits of data.
• 3-State Outputs: The outputs of the latch can be put into a high-impedance state using the Output Enable (OE) input, allowing multiple devices to share a common bus without interference.
• Schmitt Trigger Clock Input: The clock input (CLK) features a Schmitt trigger, ensuring reliable operation even in the presence of noisy signals.

Advantages and Disadvantages

Advantages: - Versatile: The CD4042BDR can be used in a wide range of digital systems for various storage applications. - Low Power Consumption: The CMOS technology used in the IC ensures low power consumption, making it suitable for battery-powered devices. - High Noise Immunity: The Schmitt trigger input provides excellent noise immunity, enhancing the reliability of the latch.

Disadvantages: - Limited Output Current: The CD4042BDR has a limited output current capability, which may restrict its use in certain high-current applications. - Non-Inverting Outputs: The latch provides non-inverting outputs, which may not be suitable for all system designs.

Working Principles

The CD4042BDR operates based on the principles of sequential logic. When the clock input (CLK) transitions from low to high, the data inputs (D0-D3) are latched and stored in their respective flip-flops. The stored data is then available at the outputs (Q0-Q3). The Output Enable (OE) input controls whether the outputs are active or in a high-impedance state.

Detailed Application Field Plans

The CD4042BDR can be used in various digital systems where storage of multiple bits of data is required. Some potential application fields include:

1. Microcontrollers: The latch can be used to store and control the input/output signals of a microcontroller.
2. Data Communication Systems: It can be utilized in data communication systems for buffering and synchronization purposes.
3. Memory Addressing: The CD4042BDR can be employed in memory addressing circuits to store address information.

Detailed and Complete Alternative Models

1. CD4042BE: DIP-16 package variant of the CD4042BDR.
2. MC14042BDR2G: Similar quad D-type latch IC from ON Semiconductor.
3. SN74HC373N: Octal transparent latch with 3-state outputs from Texas Instruments.

These alternative models offer similar functionality and can be considered as replacements for the CD4042BDR in different applications.

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