Nexperia USA Inc. 74CBTLV3253BQ,115

Overview

74CBTLV3253BQ,115 from Nexperia is a dual 1-of-4 CMOS bus switch multiplexer/demultiplexer in DHVQFN16 package, operating from 2.3 V to 3.6 V supply, featuring 5 Ω typical ON-resistance at 3.3 V, <0.25 ns propagation delay, and IOFF partial power-down protection. It routes bidirectional signals between two A ports and four B ports per channel under shared S0/S1 select and independent 1OE/2OE enable controls, used in high-speed data path switching for FPGA I/O expansion and memory interface isolation.

For engineers reviewing the 74CBTLV3253BQ,115 datasheet, 74CBTLV3253BQ,115 pinout, 74CBTLV3253BQ,115 application, or 74CBTLV3253BQ,115 equivalent, this page delivers verified electrical parameters, thermal-enhanced QFN package details, Schmitt-trigger control input behavior, IOFF leakage specs at VCC = 0 V, and real-world multiplexer timing constraints for signal integrity validation.

Technical Context

This device implements two independent analog/digital bidirectional 1-of-4 switch arrays with rail-to-rail voltage handling on all I/O ports and common select logic (S0, S1) shared across both channels. Each channel has dedicated active-low output enable (1OE, 2OE), enabling selective channel activation without affecting the other.

Its IOFF circuitry ensures sub-50 μA power-off leakage when VCC = 0 V, while Schmitt-trigger inputs tolerate slow edges across the full 2.3–3.6 V VCC range. The DHVQFN16 package provides enhanced thermal performance with exposed thermal pad and 0.85 mm profile, supporting high-density PCB layouts in industrial and telecom infrastructure.

Key Specifications

Pinout & Package

DHVQFN16 (SOT763-1) package: 2.5 × 3.5 × 0.85 mm body, no leads, 16 terminals, exposed thermal pad (GND-connected recommended), compliant with JEDEC MO-241.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual 1-of-4 bus switch applications.

Compared with SN74CBTLV3253PWR and 74LVC1G3157GW,125, the 74CBTLV3253BQ,115 delivers superior thermal performance, guaranteed dual-channel operation in one package, and tighter RON matching across ports-critical for balanced signal routing in high-speed memory and FPGA interfaces.

Availability

74CBTLV3253BQ,115 is available at Aetrix Electronics and suitable for FPGA I/O expansion, memory interface isolation, hot-swappable module interconnect, and test access multiplexing requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for 74CBTLV3253BQ,115 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 global semiconductor expert delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial, automotive, and computing applications.

The 74CBTLV3253BQ,115 belongs to Nexperia's CBTLV (Configurable Bus Transceiver Low-Voltage) family, engineered specifically for low-latency, low-power bidirectional signal routing in high-density digital systems with strict thermal and ESD requirements.

FAQ

What is the maximum recommended operating frequency for signal switching?

The device supports up to 302 MHz (−3 dB bandwidth) with 50 Ω load and 3.3 V supply, verified per Figure 17 test circuit. For reliable digital switching, maintain data rates below 1 GHz given its 0.25 ns max propagation delay and 4.0 Ω ON-resistance-ensuring signal integrity in DDR and PCIe Gen1 applications.

How should the thermal pad on the DHVQFN16 package be handled?

The exposed thermal pad (terminal 1 index area) must be soldered to a dedicated GND copper pour using ≥6 thermal vias (0.3 mm diameter) to internal GND planes. Per Figure 4 note, it may remain floating if unsoldered-but optimal thermal performance (θJA ≤ 110 K/W) requires GND connection and proper stencil aperture (80% coverage).

Does the device support level shifting between different supply domains?

No. The 74CBTLV3253BQ,115 is not a level shifter-it operates only within a single VCC domain (2.3–3.6 V). All I/O ports (A and B) must remain within 0 V to VCC. Cross-domain signaling requires external level-shifting circuitry or a dedicated translator IC such as the NXSA5102.

Can 1OE and 2OE be tied together for synchronized channel control?

Yes-1OE and 2OE may be connected to a common control signal. However, doing so eliminates independent channel gating. When tied, both channels activate/deactivate simultaneously, reducing flexibility in asymmetric bus configurations but simplifying enable logic in single-function systems.