Nexperia USA Inc. 74CBTLV3306GTX

Overview

74CBTLV3306GTX from Nexperia is a 2-bit high-speed CMOS bus switch with independent output enable inputs (1OE, 2OE), designed for bidirectional signal routing in low-voltage digital systems. It features 4 Ω typical ON-state resistance at 3.3 V, rail-to-rail switching across 2.3 V–3.6 V supply range, and IOFF partial power-down protection. Used in PCIe/USB signal multiplexing, memory address/data bus isolation, and hot-swap interface conditioning.

For engineers reviewing the 74CBTLV3306GTX datasheet, 74CBTLV3306GTX pinout, 74CBTLV3306GTX application, or 74CBTLV3306GTX equivalent, key selection criteria include guaranteed sub-11 Ω RON at 3.3 V, <0.31 ns propagation delay, Schmitt-triggered OE inputs for noise immunity, and dual-temperature-grade support (–40 °C to +125 °C).

Technical Context

This device implements two independent analog-style transmission gates controlled by separate active-low OE signals, enabling per-channel enable/disable without affecting the other path. Each switch supports bidirectional signal flow with no internal direction control - data integrity depends solely on external voltage levels at A/B ports.

IOFF circuitry actively disables outputs during power-down, blocking backflow current when VCC = 0 V, while Schmitt-triggered OE inputs tolerate slow edge rates up to 200 ns/V across full VCC range. The design targets low-capacitance signal routing: CS(ON) = 10.6 pF and CI = 0.9 pF ensure minimal loading on high-speed buses.

Key Specifications

Pinout & Package

XSON8 package (SOT833-1): plastic extremely thin small outline, no leads, 8-terminal surface-mount, body size 1.0 mm × 1.95 mm × 0.5 mm, thermal pad exposed on bottom.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 2-bit bus switch applications.

Compared with SN74CBTLV3306PWR and 74LVC2G66GW, the 74CBTLV3306GTX delivers superior thermal performance in XSON8, guaranteed IOFF protection for live-bus scenarios, and true dual-channel independent control - making it the only option qualified for industrial hot-swap and PCIe lane-sharing use cases.

Availability

74CBTLV3306GTX is available at Aetrix Electronics and suitable for PCIe lane multiplexing, USB 2.0 hot-swap isolation, and FPGA configuration interface switching requiring stable component supply across industrial temperature ranges.

Supply support for 74CBTLV3306GTX 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 specializing in high-performance, energy-efficient logic, analog, and discrete components, with manufacturing rooted in process technology leadership and automotive-grade quality systems.

The 74CBTLV series targets high-speed digital interconnect applications, emphasizing ultra-low RON, sub-nanosecond timing, and robust power sequencing behavior for next-generation embedded and communications platforms.

FAQ

What is the maximum recommended load capacitance for reliable 74CBTLV3306GTX operation?

The device is characterized with 30 pF (2.3–2.7 V) and 50 pF (3.0–3.6 V) loads in its dynamic test setup. Operation beyond 50 pF increases propagation delay nonlinearly and may exceed the 0.31 ns max tpd specification at 3.6 V. For loads >50 pF, verify signal rise/fall times and eye diagram compliance using actual board parasitics.

Can 74CBTLV3306GTX safely interface between 2.5 V and 3.3 V domains?

Yes - its rail-to-rail switching supports any voltage between GND and VCC on both ports. With VCC = 3.3 V, it passes 2.5 V signals without distortion or level shifting. However, the 2.5 V source must drive into the 3.3 V-referenced input threshold (VIH = 2.0 V min), which is satisfied by standard 2.5 V CMOS outputs.

Is external pull-up required on OE pins during normal operation?

A pull-up resistor is mandatory only to guarantee high-impedance state during power-up/power-down sequences. During steady-state operation with controlled OE logic, no pull-up is needed. If OE is driven by an open-drain controller, a pull-up is always required; if driven by push-pull logic, it is optional but recommended for noise immunity.

Does 74CBTLV3306GTX support hot insertion when VCC is unpowered?

Yes - the IOFF circuit activates automatically when VCC = 0 V, limiting OFF-state leakage to ±50 μA maximum. This prevents back-driving live buses and protects upstream drivers. However, input voltage must remain within –0.5 V to (VCC + 0.5 V); since VCC = 0 V, VI must stay between –0.5 V and +0.5 V during hot-insertion.