CBT3251DB,118

Signal Switches, Multiplexers, Decoders Overview

The CBT3251DB,118 is a single-pole, 8-throw bus switch manufactured by Nexperia. It features an output enable input (OE) and three select inputs (S0, S1, S2). When OE is LOW, the switch connects terminal A to one of eight B terminals based on the select inputs. The device operates with a supply voltage range of 4.5 V to 5.5 V. It provides a typical ON resistance of 5 Ω at VCC = 4.5 V and VI = 0 V. Propagation delay from A to Bn or Bn to A is typically 0.25 ns. The component is specified for operation between -40 °C and +85 °C.

Signal Switches, Multiplexers, Decoders Feature Summary

• IOFF circuitry enables partial power-down mode operation
• Overvoltage tolerant control inputs up to 5.5 V
• Direct interface compatibility with TTL levels
• Latch-up protection exceeding 100 mA per JEDEC standard JESD78 class II level A

Signal Switches, Multiplexers, Decoders Applications

• Multiplexer/demultiplexer signal routing
• Bus switching applications
• Hot plug isolation circuits

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific package variant during procurement as the CBT3251 family includes multiple options such as SO16 and TSSOP16. Confirm that the DB suffix corresponds to the required physical footprint for your PCB layout. Ensure the ordering information matches the exact temperature range and package dimensions specified in the current product data sheet revision.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when designing systems requiring low propagation delay and direct TTL interfacing. The IOFF feature is critical for applications involving partial power-down states to prevent backflow currents. Verify that the operating supply voltage remains within the 4.5 V to 5.5 V range to ensure proper functionality and adherence to static characteristics.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the CBT(D) Cross Bar Technology family from Nexperia, designed for switching 5 V signals in 3.3 V isolation and multiplexing applications. The CBT3251 specifically functions as a 1-of-8 FET multiplexer/demultiplexer. It utilizes advanced BiCMOS technology to achieve high performance while maintaining low power consumption across the operating temperature range.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Check datasheet revision history for discontinued packages like SSOP16. No direct substitute part numbers are explicitly confirmed in the provided source material.