M74HCT245RM13TR

Overview

Category: Integrated Circuit (IC)

Use: Level Shifter/Transceiver

Characteristics: - High-speed CMOS technology - 8-bit bidirectional transceiver - Voltage level shifting capability - Non-inverting outputs - Schmitt trigger inputs for noise immunity - Wide operating voltage range - Low power consumption

Package: SOP-20

Essence: The M74HCT245RM13TR is a high-speed CMOS integrated circuit that serves as an 8-bit bidirectional level shifter and transceiver. It allows for voltage level shifting between two different logic levels, making it suitable for interfacing between devices operating at different voltage levels.

Packaging/Quantity: The M74HCT245RM13TR is available in a small outline package (SOP) with 20 pins. It is typically sold in reels or tubes containing multiple units.

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Input Current: ±1mA
• Maximum Output Current: ±6mA
• Propagation Delay Time: 16ns (max)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The M74HCT245RM13TR has a total of 20 pins arranged as follows:

__ __ A1 | 1 20 | VCC B1 | 2 19 | OE# A2 | 3 18 | I/O1B B2 | 4 17 | I/O2B A3 | 5 16 | I/O3B B3 | 6 15 | I/O4B A4 | 7 14 | I/O5B B4 | 8 13 | I/O6B GND | 9 12 | I/O7B DI |10 11 | I/O8B ‾‾ ‾‾

Functional Features

• Bidirectional data transfer between two voltage domains
• Non-inverting outputs preserve the logic state of the input signals
• Schmitt trigger inputs provide noise immunity and hysteresis
• Enable/Disable control (OE# pin) for tri-state operation
• Wide operating voltage range allows compatibility with various systems
• Low power consumption makes it suitable for battery-powered devices

Advantages and Disadvantages

Advantages: - Enables interfacing between devices operating at different voltage levels - Provides bidirectional data transfer capability - Offers noise immunity through Schmitt trigger inputs - Supports tri-state operation for bus sharing - Compact SOP package for space-constrained applications

Disadvantages: - Limited to 8-bit data width - Propagation delay may affect high-speed applications - Requires careful consideration of voltage level compatibility

Working Principles

The M74HCT245RM13TR operates by receiving input signals from one voltage domain and shifting them to another voltage domain. It utilizes CMOS technology, which allows for high-speed operation and low power consumption. The non-inverting outputs ensure that the logic state of the input signals is preserved during the level shifting process. The Schmitt trigger inputs provide noise immunity by introducing hysteresis, making the device less susceptible to signal fluctuations.

Detailed Application Field Plans

The M74HCT245RM13TR finds applications in various fields where voltage level shifting and bidirectional data transfer are required. Some potential application areas include:

1. Microcontroller Interfacing: The IC can be used to interface microcontrollers operating at different voltage levels, enabling communication between them.
2. Sensor Networks: It can facilitate data exchange between sensors operating at different voltage domains in a networked environment.
3. Industrial Automation: The level shifter/transceiver can be employed in industrial automation systems to connect devices with varying voltage requirements.
4. Communication Interfaces: It can serve as an interface between different communication protocols or standards that operate at different voltage levels.

Detailed and Complete Alternative Models

1. SN74HCT245N: This is a similar 8-bit bidirectional level shifter/transceiver offered by Texas Instruments. It has comparable specifications and features.
2. CD74HCT245E: Another alternative from Texas Instruments, this IC provides the same functionality with slight variations in electrical characteristics.
3. MC74HCT245AN: Manufactured by ON Semiconductor, this device offers similar capabilities and pin configuration.

These alternative models can be considered based on specific requirements, availability, and compatibility with existing systems.

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