SN74CBT16244DGGR

Overview

The SN74CBT16244DGGR 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 -40°C to +85°C. The device features TTL-compatible input levels and separate output-enable (OE) inputs for each 4-bit block. When OE is low, the switch connects Port A to Port B with minimal propagation delay; when high, it disconnects the ports. The package is a 48-pin TSSOP.

Feature Summary

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

Applications

• High-speed data routing between system buses
• Portable applications requiring low power consumption
• Consumer electronics utilizing TTL-compatible logic levels

Procurement Notes

Verify the specific ordering suffix 'DGGR' corresponds to the TSSOP-48 package and tape-and-reel packaging format. Confirm that the component meets RoHS compliance standards and matches the specified -40°C to +85°C operating temperature range required for your application environment.

Selection Notes

Select this component when a 16-bit bidirectional switch with TTL-compatible inputs is required. Ensure the system supply voltage falls within the 4 V to 5.5 V range. Consider the 48-pin TSSOP package constraints and verify that the separate enable inputs fit the control logic design.

Part Context

This part belongs to the Widebus family of bus switches from Texas Instruments. It serves as a digital alternative to mechanical relays or analog switches, offering faster switching speeds and smaller form factors. The 'SN74' prefix indicates commercial grade availability compared to the military-grade 'SN54' variant.

Replacement Considerations

SN74CBT16244DLR

FAQ

How are the 16 bits organized?

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

What determines the state of the switch?

When the OE input is low, the switch is on, allowing data flow between ports. When OE is high, the switch is open, creating a high-impedance state between the ports.