SN74CB3T3125PW

Overview

The SN74CB3T3125PW is a quad bus switch IC from Texas Instruments' CB3T series, designed for low-voltage applications. It operates on a single power supply ranging from 2.3 V to 3.6 V and features a maximum on-resistance of 5 Ohms. The device supports surface-mount installation in a TSSOP-14 package and functions within an operating temperature range of -40°C to +85°C.

Feature Summary

• Provides four independent bidirectional bus switches for signal routing
• Supports level shifting between 2.5-V and 3.3-V systems with 5-V tolerant inputs
• Includes powered-off protection to prevent current leakage when the device is unpowered

Applications

• Portable equipment requiring low-voltage signal switching
• Consumer electronics utilizing 2.5-V or 3.3-V logic levels
• Computing and industrial control systems needing bus isolation

Procurement Notes

Verify the specific suffix 'PW' corresponds to the TSSOP-14 tube packaging configuration. Confirm that the CB3T series designation aligns with required automotive or high-reliability standards if applicable, as this variant differs from standard commercial logic families. Ensure input voltage tolerances match the target system's 5-V interface requirements.

Selection Notes

Select this component when designing circuits that require bidirectional data transfer between different voltage domains. The CB3T series offers enhanced robustness compared to standard logic. Consider the TSSOP-14 footprint constraints and verify that the 5-Ohm on-resistance meets the signal integrity requirements for the specific bus width and frequency.

Part Context

This part belongs to the SN74CB3T3125 family of low-voltage bus switches. It serves as a bridge for connecting subsystems operating at different voltage levels. The CB3T series is engineered for high performance in portable and battery-powered devices where power efficiency and signal fidelity are critical design parameters.

Replacement Considerations

SN74CB3Q3125PW