SN74CBT16244DGVR

Overview

The SN74CBT16244DGVR is a 16-bit FET bus switch from 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 range of -55°C to 125°C. The device features TTL-compatible input levels and separate output-enable (OE) inputs for each 4-bit block. When OE is low, data flows bidirectionally between Port A and Port B with minimal propagation delay; when high, the switch disconnects. It utilizes a 48-pin TVSOP package.

Feature Summary

• Provides 16 bits of high-speed TTL-compatible bus switching in a standard pinout configuration
• Features low on-state resistance allowing connections with minimal propagation delay
• Organized as four independent 4-bit low-impedance switches with separate output-enable inputs

Applications

• High-speed bus switching applications requiring bidirectional data flow
• Systems utilizing standard '16244-type pinouts for compatibility
• Circuit designs necessitating low-impedance switching paths

Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature rating. Confirm RoHS compliance status and moisture sensitivity level ratings against project requirements. Ensure control inputs are properly terminated to VCC or GND during operation to maintain device functionality. Cross-reference the manufacturer part number with official documentation to validate availability and production status.

Selection Notes

Select this component when a 16-bit bus switch with standard pinout compatibility is required. Consider the -55°C to 125°C operating range for industrial or automotive environments. Evaluate the 4 V to 5.5 V supply voltage constraints against system power rails. Verify that the 48-pin TVSOP package dimensions fit the available PCB real estate.

Part Context

This device belongs to the Widebus family of 16-bit FET bus switches. It shares the standard pinout of the legacy '16244 devices while offering improved performance characteristics typical of modern CMOS technology. The family includes variants with different packaging options such as SSOP, TSSOP, and CFP to accommodate various manufacturing needs.

Replacement Considerations

SN74CBT16244DLR

FAQ

How does the output-enable (OE) input function?

When OE is low, the switch is on, allowing data to flow bidirectionally 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 organization of the internal circuitry?

The device is organized as four independent 4-bit low-impedance switches, each with its own separate output-enable (OE) input.