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SN74ALS245ANSR

Name: SN74ALS245ANSR
Rating: 4.7 (12 reviews)

IC TXRX NON-INVERT 5.5V 20-SO

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規格

Series	74ALS
Part Status	Active
Logic Type	Transceiver, Non-Inverting
Number of Elements	1
Number of Bits per Element	8
Output Type	3-State
Current - Output High, Low	15mA, 24mA
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C (TA)
Mounting Type	Surface Mount
Package / Case	20-SOIC (0.209", 5.30mm Width)
Supplier Device Package	20-SO
Base Product Number	74ALS245

概述

Description

The SN74ALS245ANSR is an octal bus transceiver designed for high-speed data transmission between devices in digital circuits. It operates with a supply voltage of 4.5V to 5.5V and features a tri-state output, allowing for multiple devices to share the same bus without interference when not in use.
This device has two separate enable pins for the A and B buses, enabling it to transmit data in both directions. It supports both data transmission and reception, making it versatile for various applications. The ALS (Advanced Low Power Schottky) technology ensures lower power consumption while maintaining fast switching speeds.
Common applications include data bus buffering, interfacing microcontrollers with peripheral devices, and communication between different logic families. The SN74ALS245ANSR is available in a 20-pin dual in-line package (DIP) and is often used in systems requiring reliable data handling and efficient bus management.

Features

The SN74ALS245ANSR is an octal bus transceiver designed for data communication between two buses. Key features include:
1. Bus Transceiver: Supports both data transmission and reception.
2. Direction Control: Allows for easy switching between transmit and receive modes via the DIR pin.
3. High-Speed Operation: Capable of operating at high speeds, suitable for fast data applications.
4. Wide Voltage Range: Operates with a 4.5V to 5.5V power supply, compatible with standard TTL levels.
5. Low Power Consumption: Designed for lower power usage, ideal for battery-operated devices.
6. Tri-State Outputs: Outputs can be placed in a high-impedance state, allowing multiple devices to share a bus.
7. Level Shifting: Can interface different voltage levels, making it versatile for various applications.
8. Built-in Protection: Features include short-circuit protection and thermal shutdown for reliability.
This device is commonly used in data transfer applications within computer systems and industrial controls.

Package

The SN74ALS245ANSR is packaged in a SOIC (Small Outline Integrated Circuit) form factor. It features a 20-pin surface mount design, making it suitable for high-density applications.

Pinout

The SN74ALS245ANSR is a 20-pin integrated circuit. It functions as a bidirectional transceiver, specifically designed for data bus communication in TTL (Transistor-Transistor Logic) systems. The device allows data to be transmitted in both directions between two buses.
Key features include:
- 8 data input/output lines (A1-A8 and B1-B8)
- 2 control inputs (DIR for direction control and OE for output enable)
- 2 additional pins for VCC (power supply) and GND (ground)
The transceiver can be used to interface between different logic levels, making it suitable for various applications, including communication between microcontrollers and peripheral devices. The SN74ALS245ANSR is known for its high-speed operation and low power consumption, ensuring efficient data transfer in digital circuits.

Manufacturer

The SN74ALS245ANSR is manufactured by Texas Instruments (TI), a leading global semiconductor company. Founded in 1930, Texas Instruments specializes in designing and manufacturing a wide range of electronic components and systems, including analog ICs, embedded processors, and digital signal processors. The company serves various industries such as automotive, industrial, communications, consumer electronics, and more, focusing on innovation and high-performance technology solutions. TI is well-known for its commitment to quality and reliability in electronic components, making it a trusted choice for engineers and designers worldwide.

Application

The SN74ALS245ANSR is a high-speed, dual octal bus transceiver used in various applications, including data communication, interfacing between microcontrollers and peripherals, memory access, and signal buffering. It facilitates bidirectional data transfer, making it suitable for bus-oriented systems, such as computer networks and industrial automation. Its capability to drive multiple loads makes it ideal for use in multiplexing and demultiplexing circuits as well.

Equivalent

Equivalent products to the SN74ALS245ANSR include the SN74LS245, SN74S245, and SN74ACT245. Additionally, other manufacturers may offer compatible parts, such as the MC14553, 74HC245, or 74HCT245, depending on specific requirements for voltage levels and speed. Always check datasheets for compatibility with your application.