SN74CBT16244DLR

Overview

The SN74CBT16244DLR is a 16-bit FET bus switch manufactured by Texas Instruments, organized as four independent 4-bit low-impedance switches. It operates within a supply voltage range of 4 V to 5.5 V and supports an operating temperature from -40°C to +85°C. The device features TTL-compatible input levels and utilizes a 48-pin SSOP package. Key electrical parameters include a typical on-state resistance of 7 ohms at 5 V, propagation delay of 0.35 ns at 5 V with 50 pF load, and control input capacitance of 2.5 pF.

Feature Summary

• Provides 16 bits of high-speed bus switching functionality in a standard pinout configuration
• Features low on-state resistance for minimal signal propagation delay
• Organized into four separate 4-bit switches with individual output-enable inputs

Applications

• High-speed data bus switching applications
• Portable systems requiring low power consumption
• Battery-powered consumer electronics

Procurement Notes

Verify the specific ordering suffix 'DLR' corresponds to the SSOP tape and reel packaging format. Confirm that the component status remains active or check for manufacturer discontinuation notices before finalizing procurement plans. Ensure compatibility with the required moisture sensitivity level and reflow soldering profiles specified in the package addendum.

Selection Notes

Select this component when a 16-bit bidirectional bus switch with TTL-compatible logic levels is required. It is suitable for designs needing low on-resistance and fast switching speeds within a 4V to 5.5V supply range. Consider the 48-pin SSOP package constraints for PCB layout and thermal management requirements.

Part Context

This part belongs to the Widebus family of 16-bit bus switches from Texas Instruments. It shares the standard '16244-type pinout, facilitating direct replacement in existing designs. The device is designed to provide efficient data transfer between ports with minimal signal degradation.

Replacement Considerations

SN74CBT16244DGGR (TSSOP Package)

FAQ

How does the output-enable (OE) input control the switch state?

When OE is low, the switch is on, allowing data flow between port A and port B. When OE is high, the switch is open, creating a high-impedance state between the two ports.

What is the maximum supply voltage for the SN74CBT16244DLR?

The recommended operating conditions specify a maximum supply voltage (VCC) of 5.5 V.