SN74AHC16540DLR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Shifter
• Characteristics: High-speed, low-power, 16-bit buffer/driver with 3-state outputs
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Logic level shifting and buffering capabilities
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2 V to 5.5 V
• Input Voltage Range: 0 V to VCC
• Output Voltage Range: 0 V to VCC
• Operating Temperature Range: -40°C to +85°C
• Output Drive Capability: ±24 mA at 3.3 V
• Propagation Delay: 6 ns typical
• Input Capacitance: 3 pF typical
• Output Capacitance: 6 pF typical

Detailed Pin Configuration

The SN74AHC16540DLR has a total of 48 pins, which are divided into four groups:

1. Group A (Pins 1-12): Inputs (A1-A12) and Outputs (QA1-QA12)
2. Group B (Pins 13-24): Inputs (B1-B12) and Outputs (QB1-QB12)
3. Group C (Pins 25-36): Inputs (C1-C12) and Outputs (QC1-QC12)
4. Group D (Pins 37-48): Inputs (D1-D12) and Outputs (QD1-QD12)

Functional Features

• 16-bit buffer/driver with 3-state outputs
• Non-inverting outputs
• Supports mixed-mode signal operation on all ports
• Provides voltage translation between different logic levels
• Allows bidirectional communication between devices with different voltage levels

Advantages and Disadvantages

Advantages: - High-speed operation - Low power consumption - Wide supply voltage range - 3-state outputs for bus-oriented applications - Supports mixed-mode signal operation

Disadvantages: - Limited output drive capability - Propagation delay may affect timing-sensitive applications

Working Principles

The SN74AHC16540DLR is designed to shift logic levels between different voltage domains. It acts as a buffer/driver, allowing bidirectional communication between devices operating at different voltage levels. The inputs and outputs are non-inverting, ensuring compatibility with various logic families. The 3-state outputs enable bus-oriented applications where multiple devices can share the same data lines.

Detailed Application Field Plans

The SN74AHC16540DLR finds applications in various fields, including:

1. Microcontroller Interfacing: It facilitates communication between microcontrollers operating at different voltage levels.
2. Level Shifting: It enables interfacing between devices with incompatible logic voltage levels, such as 3.3V and 5V systems.
3. Bus Systems: It can be used in bus architectures to expand the number of input/output lines while maintaining signal integrity.
4. Industrial Automation: It plays a crucial role in industrial control systems, allowing seamless integration of devices with different voltage requirements.

Detailed and Complete Alternative Models

1. SN74AHC16541DLR: Similar to SN74AHC16540DLR but with inverted outputs.
2. SN74AHCT16540DLR: Same functionality as SN74AHC16540DLR but operates at a lower voltage range (2 V to 5.5 V).
3. SN74LVC16540DLR: Logic level shifter with 5 V tolerant inputs and outputs.

These alternative models offer similar features and can be considered based on specific application requirements.

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