SN74LVTH18646APM

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Translator
• Characteristics: High-speed, low-voltage, 18-bit bus transceiver
• Package: 56-pin TSSOP (Thin Shrink Small Outline Package)
• Essence: Translates signals between different voltage levels in digital systems
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2.7V to 3.6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 200MHz
• Propagation Delay Time: 2.5ns (typical)
• Output Drive Strength: ±12mA
• ESD Protection: >2000V (Human Body Model)

Detailed Pin Configuration

The SN74LVTH18646APM has a total of 56 pins. The pin configuration is as follows:

1. OE1 (Output Enable Input 1)
2. A1-A18 (Data Inputs/Outputs)
3. GND (Ground)
4. B1-B18 (Data Inputs/Outputs)
5. VCC (Power Supply)
6. OE2 (Output Enable Input 2)

...

Functional Features

• Bidirectional voltage translation between two independent buses
• Supports mixed-mode signal operation (5V input and 3.3V output)
• Provides non-inverting level shifting with 3-state outputs
• Allows for hot insertion and removal of modules without causing bus contention or data corruption

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data transfer - Wide supply voltage range enables compatibility with various systems - 3-state outputs provide flexibility in controlling bus access - ESD protection ensures robustness against electrostatic discharge

Disadvantages: - Limited to 18-bit bus translation, may not be suitable for larger systems - Requires careful consideration of voltage levels to avoid signal distortion or damage

Working Principles

The SN74LVTH18646APM utilizes a combination of CMOS and BiCMOS technologies to achieve bidirectional voltage translation. It employs a voltage level shifter circuit that allows signals from one voltage domain to be translated to another without causing data corruption or bus contention. The device operates by monitoring the input voltage levels and adjusting the output voltage levels accordingly.

Detailed Application Field Plans

The SN74LVTH18646APM is commonly used in digital systems where there is a need to interface between different voltage domains. Some specific application fields include:

1. Microcontrollers and microprocessors
2. Communication systems
3. Data acquisition systems
4. Industrial automation
5. Automotive electronics

Detailed and Complete Alternative Models

1. SN74LVC4245A: Octal Bus Transceiver with 3-State Outputs
2. SN74AVC4T245: 4-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation and 3-State Outputs
3. SN74LVC8T245: 8-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation and 3-State Outputs
4. SN74LVC16T245: 16-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation and 3-State Outputs
5. SN74LVC32T245: 32-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation and 3-State Outputs

These alternative models offer similar functionality and can be considered based on specific system requirements.

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