CBT3125D,112

Signal Switches, Multiplexers, Decoders Overview

The CBT3125D,112 is a quadruple FET bus switch manufactured by Nexperia. It features four independent line switches with TTL-compatible input levels and standard '125'-type pinout. The device operates within a supply voltage range of 4.5 V to 5.5 V and an ambient temperature range of -40 °C to +85 °C. Key electrical characteristics include a typical on-resistance (RON) of 5 Ω at VCC = 4.5 V and a propagation delay (tpd) of 0.25 ns. The component provides robust ESD protection exceeding 2000 V (HBM), 1000 V (CDM), and 200 V (MM).

Signal Switches, Multiplexers, Decoders Feature Summary

• Features four independent FET bus switches with low on-resistance for efficient signal routing.
• Provides high electrostatic discharge (ESD) protection compliant with JESD standards.
• Supports TTL-compatible logic levels for direct interface with standard digital circuits.
• Includes latch-up performance exceeding specified current limits for enhanced reliability.

Signal Switches, Multiplexers, Decoders Applications

• High-speed data bus switching in consumer electronics.
• Signal routing in portable computing devices.
• Interface isolation in industrial control systems.

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific package variant, as the CBT3125 family includes SO14, SSOP14, and TSSOP14 options. Confirm that the ordering suffix matches the required physical dimensions and lead configuration. Ensure the procurement source provides the original manufacturer datasheet to validate the production status and revision history before finalizing orders.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when designing circuits requiring multiple independent bidirectional switches with minimal signal distortion. The standard '125' pinout facilitates easy replacement or migration from legacy designs. Consider the low on-resistance and fast propagation delay for applications demanding high bandwidth and precise timing synchronization across parallel data lines.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the CBT3125 series of quadruple FET bus switches produced by Nexperia. The series is designed to replace traditional mechanical relays or discrete transistor switches in compact printed circuit board layouts. The D suffix specifically denotes the SO14 plastic small outline package variant, distinguishing it from shrink or thin shrink package alternatives within the same functional family.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Direct replacements include other CBT3125 variants such as CBT3125DB (SSOP14) or CBT3125PW (TSSOP14) if package compatibility allows. Verify pin-to-pin equivalence and ensure the substitute maintains identical electrical specifications regarding on-resistance and ESD ratings.

Signal Switches, Multiplexers, Decoders FAQ

How does the output enable input affect the switch state?

Each switch is disabled when its associated output enable (nOE) input is HIGH. Conversely, the switch enters the ON-state when the nOE input is LOW, allowing signals to pass between ports.

What is the maximum supply voltage for this device?

The recommended operating condition specifies a maximum supply voltage (VCC) of 5.5 V. The absolute maximum rating allows up to 7.0 V, but operation beyond 5.5 V is not recommended for standard functionality.