SN74LVC245APWRG3

Overview

• Category: Integrated Circuit
• Use: Level Shifter/Transceiver
• Characteristics: Low Voltage, Bi-directional, 8-bit, Non-inverting
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Logic Level Translator
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Input Current: ±50mA
• Maximum Output Current: ±32mA
• Propagation Delay: 4.3ns (Max) at 3.3V
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The SN74LVC245APWRG3 has a total of 20 pins. The pin configuration is as follows:

___________ A1 |1 20| VCC A2 |2 19| OE# B1 |3 18| B7 B2 |4 17| B6 B3 |5 SN74LVC245APWRG3 16| B5 B4 |6 15| B4 GND|7 14| B3 A4 |8 13| B2 A3 |9 12| B1 DIR |10 11| A1 ¯¯¯¯¯¯¯¯¯¯¯

Functional Features

• Bi-directional voltage level shifting between two logic levels.
• Non-inverting translation allows for seamless communication between different voltage domains.
• 8-bit wide data path for efficient data transfer.
• Output enable (OE#) pin allows for tri-state operation, enabling multiple devices to share a common bus.

Advantages

• Wide supply voltage range allows for compatibility with various systems.
• Fast propagation delay ensures quick data transfer.
• Non-inverting translation simplifies interfacing between different logic families.
• Small package size (TSSOP) saves board space.

Disadvantages

• Limited maximum output current may restrict use in high-current applications.
• Not suitable for level shifting between voltages outside the specified range.

Working Principles

The SN74LVC245APWRG3 is a bidirectional level shifter/transceiver that operates by translating signals between two voltage domains. It uses non-inverting buffers to ensure seamless communication between different logic families. The direction of data flow is controlled by the DIR pin. When DIR is high, data is transmitted from A-side to B-side, and when DIR is low, data is transmitted from B-side to A-side. The OE# pin enables or disables the outputs, allowing for tri-state operation.

Detailed Application Field Plans

The SN74LVC245APWRG3 is commonly used in various applications where voltage level translation is required. Some of the typical application fields include:

1. Microcontroller interfacing with different voltage peripherals.
2. Communication interfaces such as UART, SPI, and I2C.
3. Data acquisition systems.
4. Industrial automation and control systems.
5. Battery-powered devices with multiple voltage domains.

Alternative Models

There are several alternative models available that offer similar functionality to the SN74LVC245APWRG3. Some popular alternatives include:

1. TXB0108PWR: 8-bit Bidirectional Voltage-Level Translator
2. PCA9306DCTR: Dual Bi-directional I2C Bus and SMBus Voltage-Level Translator
3. SN74LVC4245APWR: Octal Bus Transceiver with 3-State Outputs

These alternative models can be considered based on specific requirements and compatibility with the system.

In conclusion, the SN74LVC245APWRG3 is a versatile integrated circuit that provides efficient level shifting between different voltage domains. Its bi-directional capability, non-inverting translation, and small package size make it suitable for a wide range of applications. However, its limited output current and voltage range should be taken into consideration when selecting this device for a particular application.