SN74CB3Q3253PWR

The Texas Instruments SN74CB3Q3253 is a high-bandwidth FET bus switch designed for 2.5-V to 3.3-V operation. It features a data path bandwidth of up to 500 MHz and a low, flat ON-state resistance of typically 4 Ω. This device supports bidirectional data flow with near-zero propagation delay and rail-to-rail switching on data I/O ports.

The SN74CB3Q3253 is suitable for a wide range of signal levels, supporting 0-V to 5-V switching with a 3.3-V VCC and 0-V to 3.3-V switching with a 2.5-V VCC. Its low input/output capacitance minimizes loading and signal distortion. The device operates over a temperature range of -40°C to 85°C and is available in various packages including TVSOP, TSSOP, VQFN, and SSOP.

Key features include 5-V tolerant I/Os, fast switching frequency, and undershoot clamp diodes on data and control inputs. It also supports partial power-down mode operation and exhibits latch-up performance exceeding 100 mA per JESD 78, Class II. ESD protection is provided with 2000-V HBM and 1000-V CDM ratings.

This bus switch is ideal for applications such as USB interfaces, differential signal interface bus isolation, and low-distortion signal gating, supporting both digital and analog signals.