SN74CBT16233DGG

Overview

The SN74CBT16233DGG is a 16-bit 1-of-2 FET multiplexer/demultiplexer housed in a 56-pin TSSOP package. It operates within a supply voltage range of 4.75 V to 5.25 V and supports an operating temperature range from -40°C to +85°C. The device features TTL-compatible input levels and provides a low on-state resistance, typically 5 Ω at VCC = 5 V with II = 64 mA. Control inputs SEL1, SEL2, and TEST can be driven by 5-V CMOS, 5-V TTL, or low-voltage TTL drivers.

Feature Summary

• Provides 16-bit 1-of-2 FET multiplexing and demultiplexing capabilities for routing data between separate paths.
• Features two independent select inputs (SEL1, SEL2) and test inputs to control data flow direction and port connections.
• Designed to prevent through current during switching directions, ensuring clean signal transitions.

Applications

• Memory interleaving where two different banks of memory need to be addressed simultaneously.
• Configuring as two 8-bit to 16-bit multiplexers for data path consolidation.
• Implementing one 16-bit to 32-bit multiplexer for high-density signal routing.

Procurement Notes

Verify the specific ordering suffix matches the required package type, as the base part number covers multiple variants including DGV and DL packages. Confirm RoHS compliance status and moisture sensitivity level ratings prior to procurement. Ensure that unused control inputs are properly terminated to VCC or GND during operation to maintain device reliability and proper functionality.

Selection Notes

Select this component when a 16-bit wide bus switch with 1-of-2 selection logic is required. The device is suitable for applications needing simultaneous addressing of two memory banks or consolidating dual data paths into a single line. Consider the 56-pin TSSOP form factor for board space constraints and verify compatibility with 5-V logic driver interfaces.

Part Context

This device belongs to Texas Instruments' Widebus family of high-speed bus switches. It is designed for applications requiring efficient multiplexing of wide data buses. The SN74CBT16233 serves as a core component for managing data flow in systems where multiple sources must share a common destination or vice versa.

Replacement Considerations

Public confirmed substitute part numbers: None identified in source material.

FAQ

How do the TEST inputs affect the device operation?

When TEST inputs are asserted, the A port is connected to both the B1 and B2 ports simultaneously, allowing for parallel data transmission.

What types of drivers can control the SEL and TEST inputs?

The SEL1, SEL2, and TEST inputs can be driven by 5-V CMOS, 5-V TTL, or low-voltage TTL drivers due to their TTL-compatible input levels.