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SN74LVC8T245PW

TISN74LVC8T245PW

Texas Instruments
Eight-bit bus transceiver with explicit direction-control pin and stronger drive characteristics for robust push-pull signaling.
NRND83,959 in stock
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Overview

The SN74LVC8T245PW is an 8-bit non-inverting bus transceiver that uses two separate configurable power-supply rails to enable bidirectional voltage translation. This device allows for seamless data transmission between different logic levels ranging from 1.65V to 5.5V, making it ideal for interfacing legacy 5V systems with modern low-voltage microcontrollers.

Why Choose This Part

This transceiver provides high-drive CMOS push-pull outputs capable of 32mA, ensuring robust signal integrity over longer PCB traces. Its dual-rail design provides independent voltage control for each port, and the device is fully specified for partial-power-down applications using Ioff circuitry.

Applications

Mixed-Voltage Logic Interfacing
Connecting 1.8V or 3.3V sensors and peripherals to 5V industrial controllers or processors.
Directional Bus Buffering
Managing data flow on 8-bit wide data buses where signal integrity and high-drive capability are required.
System Isolation
Using the VCC isolation feature to ensure all I/O pins are in a high-impedance state if either VCC input is at ground.
Partial Power-Down Modes
Utilizing Ioff circuitry to prevent damaging current backflow when the device is partially powered down.

Key Specifications

Logic Type Translation Transceiver
Output Type 3-State
Mounting Type Surface Mount
Package / Case 24-TSSOP (0.173", 4.40mm Width)
Voltage - Supply 1.65V ~ 5.5V
Number of Elements 1
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 24-TSSOP
Current - Output High, Low 32mA, 32mA
Number of Bits per Element 8

Getting Started

When integrating this part, ensure that VCCA is tied to the control logic supply and VCCB is tied to the peripheral supply. Place 0.1uF ceramic bypass capacitors close to both VCC pins to minimize switching noise, and verify that the DIR pin is driven to the correct logic level to set the desired data flow direction.

Part of SN74 Level Translators family » SN74LVC8T245

SN74LVC8T245 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Stock
SN74LVC8T245PW (this part) TSSOP-24 83,959
SN74LVC8T245 TFSOP-24 29,518

Categories

Interface ICs > UART / RS-232 / RS-485