Nexperia USA Inc. 74CBTLV3125BQ-Q10X

Overview

74CBTLV3125BQ-Q10X from Nexperia is an automotive-qualified 4-bit bidirectional bus switch with independent output enable inputs (1OE–4OE), rail-to-rail switching capability, 5 Ω typical ON-resistance at 3.3 V, and operation across 2.3 V to 3.6 V supply. It enables low-latency signal routing in high-speed digital interconnects such as infotainment data buses and ADAS sensor interface multiplexing.

For engineers reviewing the 74CBTLV3125BQ-Q10X datasheet, 74CBTLV3125BQ-Q10X pinout, 74CBTLV3125BQ-Q10X application, or 74CBTLV3125BQ-Q10X equivalent, this device supports partial power-down (IOFF), features Schmitt-trigger control inputs for noise immunity, and delivers sub-0.31 ns propagation delay - critical for timing-sensitive automotive serial bus isolation and level translation.

Technical Context

This device implements four independent analog/digital bidirectional switches, each controlled by a dedicated OE input. Each switch exhibits rail-to-rail voltage handling (0 V to VCC) on both A and B ports and maintains high-impedance OFF-state when OE is HIGH.

The IOFF circuitry ensures leakage current remains below ±50 μA during power-down, preventing backflow current when VCC = 0 V. Schmitt-trigger action on all OE inputs guarantees reliable switching across the full 2.3 V–3.6 V VCC range, even with slow-rising control signals.

Key Specifications

Pinout & Package

DHVQFN14 package (SOT762-1): 2.5 × 3 × 0.85 mm body, side-wettable flanks for AOI-compatible solder joint inspection, no leads, 14 terminals.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 4-bit bus switch applications.

Compared with SN74CBT3125QPWRQ1 and 74LVC1G3157GW-Q100, the 74CBTLV3125BQ-Q10X uniquely combines per-channel OE control, DHVQFN14 AOI support, and lowest RON in its AEC-Q100 Grade 1 class - making it optimal for space-constrained, high-reliability automotive signal routing where timing, leakage, and manufacturability are co-critical.

Availability

74CBTLV3125BQ-Q10X is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS sensor hubs, and body control modules requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for 74CBTLV3125BQ-Q10X includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a leading Dutch semiconductor manufacturer specializing in high-performance, high-reliability logic, analog, and discrete components for automotive, industrial, and computing markets.

The 74CBTLV series targets high-speed digital interconnect in automotive electronics, delivering low-latency, low-leakage, and AEC-Q100-compliant bus switching for next-generation E/E architectures.

FAQ

What is the maximum allowable input voltage on OE pins when VCC = 0 V?

The absolute maximum rating for input voltage (VI) is −0.5 V to +4.6 V regardless of VCC state. When VCC = 0 V, OE inputs remain within safe operating limits up to +4.6 V, but IOFF protection ensures no damaging backflow occurs. Input clamping current must stay below ±50 mA per datasheet Table 4.

Can the 74CBTLV3125BQ-Q10X be used to switch analog audio signals?

Yes - its rail-to-rail switching, 5 Ω RON, and 406 MHz −3 dB bandwidth support analog audio frequencies up to 20 kHz with negligible attenuation or THD. However, it is not characterized for audio-specific parameters like crosstalk or SNR; use only in non-critical line-level routing where digital timing margins dominate.

Is the thermal pad on the DHVQFN14 package electrically connected to GND?

No - the exposed thermal pad (terminal 1 index area) is not internally connected to GND. Per datasheet Figure 4 note (1), it may be left floating or connected to GND externally; if soldered, the land must remain electrically isolated unless intentionally tied to ground for thermal enhancement.

Does the device support hot insertion when VCC is ramping?

Yes - Schmitt-trigger OE inputs and IOFF circuitry ensure defined high-impedance behavior during power-up. OE should be held HIGH (via pull-up to VCC) until VCC stabilizes; the device enters functional state only after VCC exceeds 2.3 V and OE is driven LOW.