DG421CJ

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Multiplexer
• Characteristics:
  • High-speed operation
  • Low power consumption
  • Wide operating voltage range
  • Small package size
• Package: Ceramic Dual In-line Package (DIP)
• Essence: The DG421CJ is a digital multiplexer IC that allows for the selection of one out of multiple input signals and routes it to the output.
• Packaging/Quantity: The DG421CJ is typically sold in reels or tubes containing 25 pieces.

Specifications

• Supply Voltage Range: 2V to 15V
• Input Voltage Range: 0V to VDD
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 35ns (typical)
• Input Capacitance: 10pF (typical)
• Output Current: ±20mA (maximum)

Detailed Pin Configuration

The DG421CJ has a total of 16 pins, which are assigned as follows:

1. A0: Address Input 0
2. A1: Address Input 1
3. A2: Address Input 2
4. E: Enable Input
5. D0: Data Input 0
6. D1: Data Input 1
7. D2: Data Input 2
8. D3: Data Input 3
9. Y: Output
10. GND: Ground
11. D4: Data Input 4
12. D5: Data Input 5
13. D6: Data Input 6
14. D7: Data Input 7
15. VDD: Supply Voltage
16. NC: No Connection

Functional Features

• The DG421CJ is a 3-to-8 line digital multiplexer with an enable input.
• It allows for the selection of one out of eight input signals based on the address inputs (A0, A1, A2).
• The selected input signal is then routed to the output pin (Y).
• The enable input (E) controls the operation of the multiplexer. When E is low, the multiplexer is disabled and the output is in a high-impedance state.

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient signal routing. - Low power consumption makes it suitable for battery-powered devices. - Wide operating voltage range allows for compatibility with various systems. - Small package size saves board space and facilitates integration.

Disadvantages: - Limited number of input channels (8 in this case). - Lack of built-in protection features against voltage spikes or ESD events.

Working Principles

The DG421CJ operates based on the principle of digital logic. The address inputs (A0, A1, A2) determine which input signal is selected. The enable input (E) controls the overall operation of the multiplexer. When E is low, the multiplexer is disabled, and the output is in a high-impedance state. The selected input signal is then routed to the output pin (Y).

Detailed Application Field Plans

The DG421CJ can be used in various applications that require signal routing and selection, such as:

1. Data acquisition systems
2. Communication equipment
3. Industrial automation
4. Test and measurement instruments
5. Audio/video processing devices

Detailed and Complete Alternative Models

1. CD4051B: 8-channel analog multiplexer/demultiplexer IC
2. SN74HC151: 8-input digital multiplexer IC
3. MC14051B: 8-channel analog multiplexer/demultiplexer IC
4. CD74HC4067: 16-channel analog multiplexer/demultiplexer IC
5. SN74LS151: 8-input digital multiplexer IC

These alternative models offer similar functionality to the DG421CJ and can be considered as alternatives based on specific requirements and availability.

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