SN74CBTS3384PWLE

Overview

The SN74CBTS3384PWLE is a 10-bit FET bus switch with Schottky diode clamping, organized as two independent 5-bit switches. It operates at a supply voltage of 4 V to 5.5 V and supports TTL-compatible input levels. The device features low on-state resistance (typically 5 Ω to 14 Ω) and propagation delay of 0.25 ns to 0.35 ns at 5 V. It includes separate output-enable inputs for each 5-bit section and is housed in a 24-pin TSSOP package.

Feature Summary

• Provides ten bits of high-speed bus switching with integrated Schottky diodes to clamp undershoot on I/Os.
• Organized as two independent 5-bit bus switches with separate output-enable control inputs.
• Features low on-state resistance to minimize signal propagation delay during active connections.

Applications

• High-speed data bus routing
• Signal path selection in digital systems
• Bus isolation between logic sections

Procurement Notes

Verify the specific ordering suffix 'LE' against the official Texas Instruments Package Option Addendum, as standard listings typically show 'PW' or 'PWR'. Confirm that the component status matches current production requirements, noting that some variants may be designated NRND. Ensure the selected package type aligns with PCB layout specifications.

Selection Notes

Select this component when designing circuits requiring 10-bit bidirectional bus switching with fast response times. The device is suitable for applications needing TTL-compatible control signals and protection against negative voltage transients via internal clamping diodes. Verify that the operating temperature range of -40°C to 85°C meets environmental constraints.

Part Context

This part belongs to the SN74CBTS3384 family of 10-bit FET bus switches. It is designed for high-speed digital applications where low insertion loss and fast switching are critical. The device provides a cost-effective solution for managing multiple parallel data lines within a single integrated circuit package.

Replacement Considerations

Direct substitutes include SN74CBTS3384DW, SN74CBTS3384DBR, and SN74CBTS3384DGVR. These alternatives offer identical electrical characteristics but differ in physical packaging such as SOIC, SSOP, or TVSOP. Ensure pin compatibility and thermal performance match the existing design constraints.

FAQ

What is the function of the Schottky diodes in this device?

The Schottky diodes clamp undershoot on the I/O pins, protecting the device from negative voltage transients that could otherwise damage the internal circuitry.

How is the device organized internally?

The device is organized as two independent 5-bit bus switches, each with its own separate output-enable (OE) input for controlling the connection between port A and port B.