SN74AHCT245PWR

Overview

Category: Integrated Circuit (IC)

Use: Level Shifter/Transceiver

Characteristics: - High-speed CMOS technology - 8-bit bidirectional voltage level translator - Supports voltage translation between different logic levels - Wide operating voltage range: 2 V to 5.5 V - Low power consumption - Schmitt-trigger inputs for noise immunity - ESD protection exceeds 2000 V per MIL-STD-883, Method 3015

Package: TSSOP (Thin Shrink Small Outline Package)

Essence: The SN74AHCT245PWR is a versatile level shifter/transceiver IC that allows bidirectional voltage translation between different logic levels. It is commonly used in electronic systems where interfacing between devices operating at different voltage levels is required.

Packaging/Quantity: The SN74AHCT245PWR is available in tape and reel packaging, with 2500 units per reel.

Specifications

• Supply Voltage Range: 2 V to 5.5 V
• Input Voltage Range: 0 V to VCC
• Output Voltage Range: 0 V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 6 ns (typical)
• Maximum Operating Frequency: 80 MHz

Pin Configuration

The SN74AHCT245PWR has a total of 20 pins arranged as follows:

___________ A1 |1 20| VCC A2 |2 19| B1 A3 |3 18| B2 A4 |4 17| B3 A5 |5 SN74 16| B4 A6 |6 AHCT245 15| B5 A7 |7 PWR 14| B6 A8 |8 13| B7 GND |9 12| B8 OE |10 11| DIR ‾‾‾‾‾‾‾‾‾‾‾‾‾

Functional Features

• Bidirectional voltage level translation: The SN74AHCT245PWR allows for bidirectional data transfer between devices operating at different voltage levels.
• Wide operating voltage range: It supports voltage translation from 2 V to 5.5 V, making it compatible with a wide range of logic families.
• Schmitt-trigger inputs: The IC features Schmitt-trigger inputs that provide noise immunity and improve signal integrity.
• ESD protection: The device offers robust electrostatic discharge (ESD) protection, exceeding 2000 V per MIL-STD-883, Method 3015.

Advantages and Disadvantages

Advantages: - Versatile voltage level translation capability - Wide operating voltage range - Low power consumption - Noise immunity with Schmitt-trigger inputs - Robust ESD protection

Disadvantages: - Propagation delay may limit high-speed applications - Limited maximum operating frequency compared to some specialized level shifters

Working Principles

The SN74AHCT245PWR operates by utilizing a combination of CMOS technology and level shifting circuitry. When the direction control pin (DIR) is set to a specific logic level, the IC enables bidirectional data transfer between the A and B ports. The voltage translation is achieved through a series of internal transistors and level shifting circuits, ensuring compatibility between different logic families.

Detailed Application Field Plans

The SN74AHCT245PWR finds applications in various electronic systems where voltage level translation is required. Some common application areas include:

1. Microcontroller interfacing: It enables communication between microcontrollers operating at different voltage levels.
2. Sensor interfaces: It facilitates data exchange between sensors and microcontrollers with varying logic levels.
3. Communication systems: The IC can be used in serial communication interfaces, such as UART, SPI, or I2C, to enable compatibility between devices operating at different voltage levels.
4. Industrial automation: It plays a crucial role in connecting different modules and subsystems within industrial automation systems.

Detailed and Complete Alternative Models

1. SN74LVC245APWR
2. SN74LVCH245APWR
3. SN74HCT245PWR
4. SN74HC245PWR
5. SN74AHC245PWR

These alternative models offer similar functionality and are suitable replacements for the SN74AHCT245PWR, depending on specific requirements and constraints.

In conclusion, the SN74AHCT245PWR is a versatile level shifter/transceiver IC that provides bidirectional voltage level translation between different logic levels. With its wide operating voltage