SN74CBT16244CDLR

Overview

The SN74CBT16244CDLR is a 16-bit FET bus switch from Texas Instruments, organized as four independent 4-bit low-impedance switches. It operates on a single power supply ranging from 4V to 5.5V and supports an operating temperature range of -40°C to 85°C. The device utilizes a 48-pin SSOP (DL) package with TTL-compatible input levels. Each switch includes a separate output-enable (OE) control input; when OE is low, data flows bidirectionally between Port A and Port B, while a high OE state disconnects the ports.

Feature Summary

• Provides 16 bits of high-speed bus switching in a standard pinout configuration
• Features low on-state resistance for minimal propagation delay
• Supports bidirectional data flow controlled by separate enable inputs

Applications

• High-speed TTL-compatible bus switching applications
• Low-impedance signal path connections
• Bidirectional data routing between ports

Procurement Notes

Verify the specific ordering suffix 'CDLR' against official documentation, as datasheets primarily list 'DLR' for the tape-and-reel SSOP variant. Confirm that the 'C' designation aligns with the specified commercial temperature range (-40°C to 85°C). Ensure compatibility with the 48-pin SSOP footprint and check for any recent product change notices regarding availability or material composition.

Selection Notes

Select this component for designs requiring 16-bit wide bus switching with TTL-compatible logic levels. It is suitable for applications needing low on-state resistance to maintain signal integrity at high speeds. Consider the 48-pin SSOP package constraints and ensure the system voltage falls within the 4V to 5.5V operating range. Verify that the required thermal performance fits within the commercial temperature limits.

Part Context

This device belongs to the Widebus family of 16-bit FET bus switches. It shares the standard '16244-type pinout, facilitating drop-in replacement for legacy designs. The SN74CBT16244 series offers a balance of speed and impedance, distinguishing it from higher-capacitance or lower-voltage alternatives within the broader logic switch portfolio.

Replacement Considerations

SN74CBT16244DGGR is a manufacturer-recommended alternative available in a TSSOP package.