SN74LVC245ADGVR

The SN74LVC245ADGVR is a high-speed, low-voltage, octal bus transceiver designed by Texas Instruments. It is part of the LVC family of logic devices, which are known for their low power consumption and high-speed performance. Here’s a detailed description of its features and specifications:

General Features:

• Type: Octal Bus Transceiver
• Functionality: The device can transmit and receive data between two buses, making it suitable for bidirectional data communication.
• Voltage Range: It operates with a supply voltage range of 1.65V to 5.5V, allowing it to interface with various logic levels.
• Data Rate: The SN74LVC245A can achieve data rates up to 250 Mbps, making it suitable for high-speed applications.

Pin Configuration:

• The device is housed in a 20-pin TSSOP (Thin Shrink Small Outline Package) form factor, which is compact and suitable for space-constrained applications.
• The pins are arranged in a way that allows for easy integration into circuit boards.

Functional Characteristics:

• Direction Control: The transceiver features a direction control pin (DIR) that determines the direction of data flow. When DIR is high, data flows from the A bus to the B bus; when DIR is low, data flows from the B bus to the A bus.
• Output Enable: The device includes an output enable pin (OE) that allows the outputs to be tri-stated, effectively disconnecting them from the bus. This feature is useful for bus arbitration and reducing power consumption when the device is not in use.
• Bus Compatibility: It is designed to be compatible with various bus standards, including TTL, LVCMOS, and LVTTL, making it versatile for different applications.

Electrical Characteristics:

• Input/Output Voltage Levels: The device can accept input voltages as low as 0.8V for a logic low and as high as 2.0V for a logic high when powered at 3.3V, ensuring reliable operation in low-voltage environments.
• Power Consumption: The SN74LVC245A is designed for low power consumption, with a typical supply current of only a few microamperes when in standby mode.

Applications:

• The SN74LVC245ADGVR is commonly used in applications such as:
  • Data communication between microcontrollers and peripheral devices.
  • Level shifting between different voltage domains.
  • Bus systems in automotive, industrial, and consumer electronics.

Package Information:

• Package Type: TSSOP-20
• Dimensions: The TSSOP package is compact, typically measuring around 4.4 mm x 6.5 mm, with a height of about 1 mm, making it suitable for high-density circuit designs.

Summary:

The SN74LVC245ADGVR from Texas Instruments is a versatile and efficient octal bus transceiver that supports high-speed data transmission and low-voltage operation. Its features, including direction control, tri-state outputs, and compatibility with various logic levels, make it an ideal choice for a wide range of digital communication applications.