74LVC245AMTR

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter and Bus Transceiver
• Characteristics: Low Voltage CMOS, Octal Bus Transceiver with 3-State Outputs
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: This IC is designed to shift logic levels and provide bidirectional voltage translation between different voltage domains. It can be used in various applications where interfacing between different voltage levels is required.
• Packaging/Quantity: The 74LVC245AMTR is typically available in reels of 2500 units.

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• High-Level Input Voltage: 0.7 x VCC to VCC + 0.3V
• Low-Level Input Voltage: -0.3V to 0.3V
• High-Level Output Voltage: 0.9 x VCC to VCC
• Low-Level Output Voltage: 0V to 0.1 x VCC
• Maximum Operating Frequency: 80 MHz
• Number of Channels: 8
• Output Drive Capability: ±24 mA
• Propagation Delay: 4 ns (Max)

Detailed Pin Configuration

The 74LVC245AMTR has a total of 20 pins, which are assigned as follows:

• Pin 1: OE (Output Enable)
• Pin 2: A1 (Input/Output)
• Pin 3: B1 (Input/Output)
• Pin 4: A2 (Input/Output)
• Pin 5: B2 (Input/Output)
• Pin 6: A3 (Input/Output)
• Pin 7: B3 (Input/Output)
• Pin 8: A4 (Input/Output)
• Pin 9: B4 (Input/Output)
• Pin 10: GND (Ground)
• Pin 11: B5 (Input/Output)
• Pin 12: A5 (Input/Output)
• Pin 13: B6 (Input/Output)
• Pin 14: A6 (Input/Output)
• Pin 15: B7 (Input/Output)
• Pin 16: A7 (Input/Output)
• Pin 17: B8 (Input/Output)
• Pin 18: A8 (Input/Output)
• Pin 19: VCC (Supply Voltage)
• Pin 20: DIR (Direction Control)

Functional Features

• Bidirectional voltage translation between different voltage domains.
• 3-state outputs allow multiple devices to share a common bus.
• Low power consumption and wide supply voltage range make it suitable for battery-powered applications.
• Schmitt-trigger inputs provide hysteresis, improving noise immunity.

Advantages

• Provides seamless interfacing between different voltage levels.
• High-speed operation allows for efficient data transfer.
• 3-state outputs enable easy bus sharing among multiple devices.
• Wide supply voltage range enhances versatility in various applications.
• Schmitt-trigger inputs improve noise immunity.

Disadvantages

• May not be suitable for high-power applications due to limited output drive capability.
• Requires careful consideration of voltage level compatibility to avoid damage or incorrect operation.

Working Principles

The 74LVC245AMTR operates by using a combination of CMOS technology and level shifting techniques. It consists of eight bidirectional buffers with 3-state outputs, allowing bidirectional voltage translation between two voltage domains. The direction of data flow is controlled by the DIR pin. When the DIR pin is set to a logic high, data flows from the A side to the B side, and when it is set to a logic low, data flows from the B side to the A side.

Detailed Application Field Plans

The 74LVC245AMTR can be used in various applications where interfacing between different voltage levels is required. Some common application fields include: - Microcontroller and peripheral communication. - Level shifting in mixed-voltage systems. - Interface between different logic families (e.g., TTL and CMOS). - Data bus buffering and translation. - Voltage level conversion in battery-powered devices.

Detailed and Complete Alternative Models

Some alternative models that provide similar functionality to the 74LVC245AMTR are: - SN74LVC245A by Texas Instruments - MC74LVX245 by ON Semiconductor - CD74HCT245 by Texas Instruments - 74HC245 by NXP Semiconductors

These alternative models offer comparable features and can be considered as replacements based on specific requirements and availability.

In conclusion, the 74LVC245AMTR is a versatile integrated circuit that enables bidirectional voltage translation between different voltage domains. Its low power consumption, wide supply voltage range, and 3-state outputs make it suitable for various applications requiring