74CBTLVD3245DS,118

Signal Switches, Multiplexers, Decoders Overview

The 74CBTLVD3245DS,118 is an 8-pole, single-throw bus switch manufactured by Nexperia. It operates within a supply voltage range of 3.0 V to 3.6 V and supports ambient temperatures from -40 °C to +125 °C. The device features Schmitt trigger inputs for noise immunity and IOFF circuitry for partial power-down applications. It provides rail-to-rail switching on data I/O ports with low CMOS power consumption.

Signal Switches, Multiplexers, Decoders Feature Summary

• IOFF circuitry prevents damaging backflow current during partial power-down states
• Schmitt trigger action at control inputs ensures tolerance to slower input rise and fall times
• High noise immunity compliant with JEDEC standards for the specified voltage range

Signal Switches, Multiplexers, Decoders Applications

• Partial power-down applications requiring isolation of powered-off sections
• Level-shifting between different voltage domains in high-speed digital systems
• Bus switching in portable and battery-powered devices

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify that the ordering suffix DS corresponds to the SSOP20 package variant as defined in the manufacturer's documentation. Confirm the specific temperature grade required for the application environment. Ensure design compliance with the recommended operating conditions regarding supply voltage limits and input transition rates to maintain signal integrity.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when an 8-bit bidirectional bus switch is needed with active-low output enable control. The device is suitable for designs requiring robust ESD protection and latch-up performance exceeding standard levels. Consider the SSOP20 package constraints if space is limited, ensuring thermal dissipation requirements are met within the operating temperature range.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74CBTLVD series of low-voltage bus switches. It is produced by Nexperia, which acquired the Standard Products business from NXP Semiconductors. The product line focuses on high-speed, low-power switching solutions for consumer electronics and industrial applications.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The datasheet revision history indicates that the type number 74CBTLVD3245DS was removed in version 4. Verify availability of alternative packages such as DHVQFN20 (74CBTLVD3245BQ) or TSSOP20 (74CBTLVD3245PW) for equivalent functionality.

Signal Switches, Multiplexers, Decoders FAQ

How does the IOFF circuitry function?

The IOFF circuitry disables the outputs when the device is powered down, preventing damaging backflow current through the device.

What is the effect of the OE input state?

The switches are disabled when the Output Enable (OE) input is HIGH. When LOW, the switches allow data transmission between ports A and B.