SN74LV8T245RKSR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LV8T245RKSR is an octal bus transceiver with configurable voltage translation and tri-state outputs. It operates within a supply voltage range of 1.6 V to 5.5 V. The device supports bidirectional data transfer controlled by DIR and OE pins. Input thresholds enable up-translation from lower voltages (e.g., 1.2 V) and down-translation from 5.5 V tolerant inputs. Propagation delay ranges from 4.5 ns at 5 V to 25.1 ns at 1.8 V under specified load conditions.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Configurable voltage translation supporting both up-translation for low-voltage CMOS inputs and down-translation using 5.5 V tolerant input pins.
• Balanced CMOS tri-state outputs that can source and sink similar currents, ensuring signal integrity across various loads.
• Integrated wettable flanks on the VQFN package to improve side soldering wetting and facilitate automatic optical inspection.

Buffers, Drivers, Receivers, Transceivers Applications

• Enabling or disabling digital signals in system control logic
• Eliminating slow or noisy input signals through level shifting
• Holding signals during controller reset sequences
• Switch debouncing applications

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'RKS' corresponds to the VQFN-20 package variant when sourcing. Confirm the revision status matches production data requirements rather than advanced information notices. Ensure design compliance with absolute maximum ratings regarding input clamp currents and continuous output current limits to prevent device damage.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring flexible voltage translation between 1.8 V, 2.5 V, 3.3 V, and 5 V domains. The LVxT enhanced input voltage thresholds make it suitable for interfacing with legacy or mixed-voltage systems. Consider thermal resistance metrics if operating near maximum temperature limits in enclosed spaces.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to Texas Instruments' LVxT family of logic devices, which are designed for low-voltage applications with enhanced input/output characteristics. The SN74LV8T245 specifically provides octal bus transceiver functionality, allowing efficient data movement between microcontrollers and peripherals in embedded systems.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVC8T245: Similar octal transceiver but lacks the specific LVxT enhanced input voltage thresholds for certain up-translation scenarios.

Buffers, Drivers, Receivers, Transceivers FAQ

How does the OE pin function during power-up?

To ensure the high-impedance state during power-up or power-down, the OE pin should be tied to VCC through a pull-up resistor, typically 10 kΩ, preventing unintended signal transmission.

What is the purpose of the wettable flanks on the RKS package?

Wettable flanks provide additional surface area for solder adhesion on the sides of the leads, improving side wetting after soldering and making the QFN package easier to inspect with automatic optical inspection (AOI).