SN74CBT3251DBQRG4

Overview

The SN74CBT3251DBQRG4 is a single 8-to-1 multiplexer/demultiplexer from the Texas Instruments 74CBT series. It operates on a single power supply ranging from 4.0 V to 5.5 V, with a typical operating voltage of 5 V. The device features eight data channels and three address inputs for channel selection. Key electrical parameters include a maximum on-resistance of 7 Ohms, a bandwidth of 200 MHz, and propagation delays with a maximum turn-on time of 6.4 ns and turn-off time of 6.8 ns. It functions within an ambient temperature range of -40°C to +85°C.

Feature Summary

• Provides high-speed signal routing through a single 8:1 multiplexing configuration.
• Maintains low on-resistance to minimize signal attenuation across the passband.
• Supports wide bandwidth operation suitable for high-frequency analog and digital signals.

Applications

• High-speed data routing in consumer electronics
• Signal switching in industrial control systems
• Multiplexing in telecommunications equipment

Procurement Notes

Verify the specific suffix 'RG4' indicates RoHS compliance and lead-free manufacturing status as per Texas Instruments documentation. Confirm the package type corresponds to the SSOP-16 variant. Ensure the ordering part number matches the exact pinout and electrical specifications required for the target circuit design before procurement.

Selection Notes

Select this component when a 5 V logic interface is required for 8-channel signal switching. The 7 Ohm on-resistance and 200 MHz bandwidth make it suitable for applications demanding low distortion. Compare against the LV variant if lower voltage operation below 3.6 V is necessary, or consider alternative packages if space constraints differ from the SSOP-16 footprint.

Part Context

This part belongs to the 74CBT family of bus switches and multiplexers designed for high-speed applications. It serves as a fixed-function switch IC that replaces mechanical relays or discrete transistor switches. The device integrates level-shifting capabilities compatible with standard 5 V logic families, facilitating interface between different system components without external biasing.

Replacement Considerations

The SN74CBT3251DBQ is a direct functional equivalent with identical electrical characteristics but may lack the specific environmental compliance suffix. Verify pin compatibility and package dimensions before substituting.