Nexperia USA Inc. 74CBTLV3306DCH

Overview

74CBTLV3306DCH 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 2.3–3.6 V supply, and IOFF partial power-down protection. Used in PCIe lane multiplexing, memory address/data bus isolation, and hot-swap I/O buffering.

For engineers reviewing the 74CBTLV3306DCH datasheet, 74CBTLV3306DCH pinout, 74CBTLV3306DCH application, or 74CBTLV3306DCH equivalent, key selection criteria include guaranteed sub-0.31 ns propagation delay at 3.6 V, ±10 μA IOFF leakage at VCC = 0 V, Schmitt-triggered OE inputs for noise immunity, and VSSOP8 package compatibility with high-density PCB layouts.

Technical Context

This device implements two independent transmission-gate-based bus switches, each controlled by a dedicated active-low output enable (nOE). Switch conduction is bidirectional and voltage-transparent-signals pass unaltered between A and B ports when enabled, with no level-shifting or buffering.

The IOFF circuit actively disables both switch paths and isolates I/O terminals when VCC = 0 V, preventing backflow current during partial power-down sequences. Schmitt-trigger inputs on OE pins ensure clean, jitter-free enable/disable transitions even with slow-rising control signals across the full 2.3–3.6 V operating range.

Key Specifications

Pinout & Package

VSSOP8 plastic very thin shrink small outline package (SOT765-1); 8-lead, 2.3 mm body width; lead pitch 0.5 mm; RoHS-compliant, halogen-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74CBTLV3306PWR, the 74CBTLV3306DCH offers tighter propagation delay tolerance and superior IOFF performance; versus 74LVC2G66GW, it delivers 3× lower ON resistance and critical power-down safety-making it the sole choice for industrial hot-swap and PCIe lane management.

Availability

74CBTLV3306DCH is available at Aetrix Electronics and suitable for PCIe lane multiplexing, memory bus isolation, and hot-swap I/O buffering requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for 74CBTLV3306DCH 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 focused on high-volume, high-reliability logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74CBTLV series targets high-speed digital interface isolation, emphasizing ultra-low RON, sub-nanosecond timing, and robust power sequencing behavior for next-generation embedded interconnects.

FAQ

What is the maximum allowable voltage on A/B pins when VCC = 0 V?

The absolute maximum switch voltage rating is −0.5 V to VCC + 0.5 V. When VCC = 0 V, A/B pins must remain within −0.5 V to +0.5 V to prevent damage. The IOFF circuit enforces this by disabling conduction, but external biasing beyond these limits risks permanent junction breakdown.

Can 1OE and 2OE be tied together and driven by a single controller pin?

Yes-both OE inputs are CMOS-compatible and can be paralleled. However, doing so eliminates independent channel control. Total input capacitance becomes ~1.8 pF (2 × CI), requiring driver strength capable of charging/discharging within 2.0 ns rise/fall time per JEDEC spec.

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

A pull-up resistor is mandatory during power-up/power-down to guarantee high-impedance state before VCC stabilizes. During steady-state operation, OE may be actively driven LOW/HIGH by logic; resistor value ≥10 kΩ suffices if driven by standard CMOS outputs.

Does the 74CBTLV3306DCH support level translation between different VCC domains?

No-it is not a level translator. The device passes signals rail-to-rail but requires matched VCC on both sides of the switch. Applying different voltages to A and B ports violates the VSW specification and may cause excessive leakage or latch-up.