Encyclopedia Entry: 74LVT245MTC

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifting and Bus Transceiver
• Characteristics: High-speed, low-power, bidirectional voltage level translator
• Package: TSSOP-20
• Essence: Translates signals between different voltage levels in digital systems
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 1.2V to 3.6V
• Input Voltage Levels: 0V to VCC
• Output Voltage Levels: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 4.5ns (max) at 3.3V
• Output Drive Capability: ±24mA

Detailed Pin Configuration

The 74LVT245MTC has a total of 20 pins, which are assigned as follows:

1. OE (Output Enable) - Active Low Output Enable
2. DIR (Direction Control) - Controls the direction of data flow
3. A1-A8 (Data Inputs/Outputs) - Bidirectional data lines
4. GND (Ground) - Reference ground for the IC
5. B1-B8 (Data Inputs/Outputs) - Bidirectional data lines
6. VCC (Supply Voltage) - Positive supply voltage
7. NC (No Connection) - No electrical connection
8. B8-B1 (Data Inputs/Outputs) - Bidirectional data lines
9. GND (Ground) - Reference ground for the IC
10. A8-A1 (Data Inputs/Outputs) - Bidirectional data lines
11. DIR (Direction Control) - Controls the direction of data flow
12. OE (Output Enable) - Active Low Output Enable

Functional Features

• Bidirectional voltage level translation between two different voltage domains
• Supports both 3.3V and 5V systems
• High-speed operation with minimal propagation delay
• Low power consumption
• Provides direction control for data flow
• Output enable pin allows for tri-state output

Advantages

• Enables seamless communication between devices operating at different voltage levels
• Wide operating voltage range allows compatibility with various systems
• Fast signal transmission with low delay
• Low power consumption helps in reducing overall system energy consumption
• Compact TSSOP-20 package saves board space

Disadvantages

• Limited to bidirectional level shifting, not suitable for unidirectional applications
• May experience signal degradation if used beyond specified voltage and temperature ranges
• Not compatible with systems requiring higher drive capability

Working Principles

The 74LVT245MTC is a bidirectional voltage level translator that facilitates communication between digital systems operating at different voltage levels. It uses a combination of MOSFETs and CMOS technology to achieve high-speed and low-power operation. The direction control pin determines the flow of data, while the output enable pin allows the outputs to be put in a high-impedance state when not required.

Detailed Application Field Plans

The 74LVT245MTC finds extensive use in various applications, including: 1. Interfacing between microcontrollers and peripheral devices operating at different voltage levels 2. Level shifting in communication interfaces such as UART, SPI, and I2C 3. Voltage translation in memory modules and data storage devices 4. Signal conversion in industrial automation and control systems 5. Interface bridging in automotive electronics

Detailed and Complete Alternative Models

1. SN74LVC245A: Similar bidirectional voltage level translator with 3-state outputs
2. 74LVX245: Octal bus transceiver with non-inverting outputs
3. CD4508B: CMOS dual 4-bit latch/shift register with level shifting capability

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