SN74AS4374BDWE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Logic
• Characteristics: High-speed, Low-power consumption
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Octal D-Type Transparent Latch with 3-State Outputs
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• High-Level Input Voltage: 2V (min), 7V (max)
• Low-Level Input Voltage: -0.5V (min), 0.8V (max)
• High-Level Output Voltage: 2.4V (min), VCC (max)
• Low-Level Output Voltage: 0V (min), 0.4V (max)
• Operating Temperature Range: -40°C to 85°C
• Propagation Delay Time: 6ns (typical)

Detailed Pin Configuration

1. GND (Ground)
2. D0 (Data Input 0)
3. D1 (Data Input 1)
4. D2 (Data Input 2)
5. D3 (Data Input 3)
6. D4 (Data Input 4)
7. D5 (Data Input 5)
8. D6 (Data Input 6)
9. D7 (Data Input 7)
10. LE (Latch Enable)
11. OE (Output Enable)
12. Q0 (Output 0)
13. Q1 (Output 1)
14. Q2 (Output 2)
15. Q3 (Output 3)
16. Q4 (Output 4)
17. Q5 (Output 5)
18. Q6 (Output 6)
19. Q7 (Output 7)
20. VCC (Supply Voltage)

Functional Features

• Octal D-Type Transparent Latch
• 3-State Outputs for bus-oriented applications
• Latch Enable (LE) and Output Enable (OE) control signals
• High-speed operation with low power consumption
• TTL-compatible inputs and outputs

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data transfer - Low-power consumption helps in reducing energy usage - 3-State Outputs enable bus-oriented applications - TTL compatibility ensures easy integration with existing systems

Disadvantages: - Limited operating temperature range (-40°C to 85°C) - Requires a stable supply voltage within the specified range

Working Principles

The SN74AS4374BDWE4 is an octal D-type transparent latch with 3-state outputs. It operates by latching the input data when the latch enable (LE) signal is high. The output enable (OE) signal controls the state of the outputs, allowing them to be either active or in a high-impedance state.

When LE is high, the data on the input pins (D0-D7) is transferred to the corresponding output pins (Q0-Q7). When OE is low, the outputs are active and reflect the input data. Conversely, when OE is high, the outputs enter a high-impedance state, effectively disconnecting them from the rest of the circuit.

This functionality makes the SN74AS4374BDWE4 suitable for bus-oriented applications, where multiple devices can share a common data bus without interfering with each other.

Detailed Application Field Plans

The SN74AS4374BDWE4 finds applications in various digital logic systems, including:

1. Microprocessors and Microcontrollers: Used for data buffering and synchronization between the processor and external devices.
2. Memory Systems: Enables efficient data transfer between memory modules and the memory controller.
3. Communication Systems: Facilitates data transmission and reception in networking equipment, such as routers and switches.
4. Industrial Control Systems: Provides latch functionality for controlling various industrial processes and equipment.
5. Automotive Electronics: Used in automotive control units for signal buffering and synchronization.

Detailed and Complete Alternative Models

1. SN74AS4374BDW: Similar to SN74AS4374BDWE4 but without the "E4" suffix, indicating a different packaging option.
2. SN74LS374N: Octal D-Type Transparent Latch with non-3-state outputs, compatible with TTL logic levels.
3. CD74HCT374E: High-Speed CMOS Logic Octal D-Type Flip-Flop with 3-State Outputs.

These alternative models offer similar functionality and can be used as replacements depending on specific requirements and availability.

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