SN74CB3T3125PWR

The SN74CB3T3125PWR is a high-speed TTL-compatible FET bus switch manufactured by Texas Instruments. It features 4 independent circuits, each configured as a 1 x 1:1 switch, supporting bidirectional data flow with near-zero propagation delay.

This bus switch operates from a single supply voltage ranging from 2.3V to 3.6V. It offers 5V-tolerant I/Os and supports mixed-mode signal operation, allowing for level shifting from 5V inputs down to 3.3V outputs with a 3.3V VCC, and from 5V/3.3V inputs down to 2.5V outputs with a 2.5V VCC. The device exhibits low ON-state resistance of typically 5 Ω and low input/output capacitance of typically 4.5 pF, minimizing loading effects.

Designed for surface mount, the SN74CB3T3125PWR comes in a 14-TSSOP package. It has a low power consumption with a maximum quiescent current of 20 µA. The device also includes features like undershoot clamp diodes on data and control inputs and supports partial-power-down mode operation. ESD performance is tested per JESD 22 standards, including 2000-V HBM (Class II) and 1000-V CDM.

Key electrical characteristics include a wide range of data I/O signaling levels from 0V to 5V, and control inputs that can be driven by TTL or 5V/3.3V CMOS outputs. Latch-up performance exceeds 250 mA per JESD 17.