SN74HC245DW

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SN74HC245DW

IC TXRX NON-INVERT 6V 20-SOIC

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規格

Series 74HC
Part Status Obsolete
Base Product Number 74HC245
Logic Type Transceiver, Non-Inverting
Number of Elements 1
Number of Bits per Element 8
Output Type 3-State
Current - Output High, Low 7.8mA, 7.8mA
Voltage - Supply 2V ~ 6V
Operating Temperature -40°C ~ 85°C (TA)
Mounting Type Surface Mount
Package 20-SOIC (0.295", 7.50mm Width)
Supplier Device Package 20-SOIC
Packaging Bulk, Tube

概述

Description

The SN74HC245DW is a high-speed CMOS octal bus transceiver designed for bidirectional data communication between devices. It features eight data lines, allowing for the transmission of data in both directions. The device operates at a wide voltage range of 2V to 6V, making it compatible with various logic families.
This bus transceiver is particularly useful in applications where multiple devices need to communicate over a shared bus, such as in microcontroller systems or peripheral interfaces. It includes control pins to manage data flow direction and enable the transceiver. The SN74HC245DW is characterized by low power consumption and high noise immunity, ensuring reliable operation in various environments.
The package type, DW, indicates it comes in a small, surface-mount format, suitable for space-constrained applications. Overall, the SN74HC245DW is an efficient solution for implementing bus communication in digital circuitry.

Features

The SN74HC245DW is an 8-bit bi-directional transceiver designed for high-speed data communication. Key features include:
1. High-Speed Operation: It supports data rates up to 25 Mbps, suitable for fast data transfer applications.
2. Bi-Directional Data Flow: The device can transmit and receive data in both directions, making it versatile for various communication setups.
3. 3-State Outputs: Outputs can be put into a high-impedance state, allowing for multiple devices to be connected to the same bus without interference.
4. Wide Voltage Range: Operates from 2V to 6V, compatible with multiple logic levels.
5. Low Power Consumption: Designed for efficiency, it consumes low power, ideal for battery-operated devices.
6. TTL Compatible: Fully compatible with TTL logic levels, ensuring easy integration into existing circuits.
7. Package Options: Available in various packages, including SOIC and TSSOP, facilitating different design requirements.
These features make the SN74HC245DW suitable for applications in data buses, memory interfacing, and peripheral communication.

Package

The SN74HC245DW is packaged in a TSSOP (Thin Shrink Small Outline Package) with 20 pins. It features a small footprint suitable for surface-mount applications, allowing for efficient use of PCB space.

Pinout

The SN74HC245DW is an octal bus transceiver with 3-state outputs. It has 20 pins in total, with the following key functions:
1. Data Inputs/Outputs (A1-A8, B1-B8): Pins 2-9 and 11-18 serve as the data input/output lines for transferring data between two buses.
2. Direction Control (DIR): Pin 1 controls the direction of data flow; when high, data flows from A to B, and when low, from B to A.
3. Output Enable (OE): Pin 19 is used to enable or disable the outputs; when low, outputs are active, and when high, they are in high-impedance state.
4. Ground (GND): Pin 10 connects to ground.
5. VCC: Pin 20 provides the supply voltage.
This device is typically used for interfacing between different parts of a digital system.

Manufacturer

The SN74HC245DW is manufactured by Texas Instruments (TI), a leading global semiconductor company. Texas Instruments specializes in designing and manufacturing a broad range of analog and digital semiconductor devices, including integrated circuits (ICs), microcontrollers, and processors. The company serves various markets, including automotive, industrial, consumer electronics, and communication. TI is well-known for its innovation and reliability in the electronics industry, providing solutions for signal processing, power management, and connectivity among other applications.

Application

The SN74HC245DW is a high-speed CMOS octal bus transceiver used for bidirectional data transmission. It is commonly applied in digital communication systems, microcontroller interfacing, data buffering, and signal level shifting. Its applications include connecting different voltage levels, facilitating communication between devices, and expanding data paths in complex circuits. Additionally, it is used in automotive electronics, industrial automation, and consumer electronics for data handling and buffering tasks.

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