74LCX16500G

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Shifter
• Characteristics: High-speed, low-voltage, bidirectional level shifting
• Package: 48-pin TSSOP (Thin Shrink Small Outline Package)
• Essence: The 74LCX16500G is a logic level shifter designed to shift signals between different voltage domains.
• Packaging/Quantity: Available in reels of 2500 units.

Specifications

• Supply Voltage: 1.65V to 3.6V
• Logic Family: LCX
• Number of Channels: 16
• Input/Output Compatibility: 5V tolerant
• Propagation Delay: 2.5ns (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The 74LCX16500G has a total of 48 pins, which are divided into four groups:

Group A (Pins 1-12)

• VCC: Power supply voltage
• GND: Ground reference
• OE: Output Enable
• DIR: Direction control input

Group B (Pins 13-24)

• A1-A8: Data inputs from Domain A
• B1-B8: Data inputs from Domain B

Group C (Pins 25-36)

• Y1-Y8: Data outputs to Domain A
• Z1-Z8: Data outputs to Domain B

Group D (Pins 37-48)

• NC: No Connection (reserved for future use)

Functional Features

• Bidirectional level shifting: Allows data transmission between two voltage domains.
• High-speed operation: The 74LCX16500G can handle high-frequency signals with minimal delay.
• 5V tolerance: Compatible with both 3.3V and 5V logic systems.
• Output Enable (OE) control: Allows the user to enable or disable the outputs.

Advantages

• Wide supply voltage range allows compatibility with various systems.
• Fast propagation delay ensures efficient signal transmission.
• Bidirectional capability simplifies interfacing between different voltage domains.
• 5V tolerance provides flexibility in mixed-voltage environments.

Disadvantages

• Limited number of channels (16) may not be sufficient for complex applications requiring more inputs/outputs.
• The TSSOP package may require careful handling during assembly due to its small size.

Working Principles

The 74LCX16500G utilizes a combination of MOSFETs and CMOS technology to achieve bidirectional level shifting. It employs a voltage translation technique that allows signals to be shifted from one voltage domain to another while maintaining signal integrity and minimizing delay.

Application Field Plans

The 74LCX16500G is commonly used in various applications, including:

1. Communication systems: Facilitates level shifting between different communication protocols operating at different voltage levels.
2. Microcontroller interfaces: Enables communication between microcontrollers operating at different voltage domains.
3. Data acquisition systems: Allows data transfer between sensors and processing units with varying voltage requirements.
4. Industrial automation: Used in control systems where different components operate at different voltage levels.

Alternative Models

If the 74LCX16500G is not available or does not meet specific requirements, alternative models that can be considered include:

1. SN74LVC4245A: Octal bus transceiver with similar characteristics and pin configuration.
2. MC74LVX3245: Octal bus transceiver with 3-state outputs and compatible voltage levels.
3. 74HCT245: Octal bus transceiver with higher voltage tolerance and wider temperature range.

These alternative models provide similar functionality and can be used as substitutes depending on the specific application requirements.

In conclusion, the 74LCX16500G is a versatile logic level shifter that enables bidirectional signal transmission between different voltage domains. Its high-speed operation, wide supply voltage range, and compatibility with 5V systems make it suitable for various applications in communication, microcontroller interfaces, data acquisition, and industrial automation.