Nexperia USA Inc. 74CBTLV1G125GW,125

Overview

74CBTLV1G125GW,125 from Nexperia is a single high-speed CMOS bus switch with active-low output enable (OE), 5 Ω typical ON-resistance at 3.3 V, rail-to-rail signal switching, and IOFF partial power-down protection. It operates from 2.3 V to 3.6 V across –40 °C to +125 °C and is used in low-voltage data path isolation for portable computing and industrial I/O expansion.

For engineers reviewing the 74CBTLV1G125GW,125 datasheet, 74CBTLV1G125GW,125 pinout, 74CBTLV1G125GW,125 application, or 74CBTLV1G125GW,125 equivalent, key selection criteria include guaranteed sub-0.25 ns propagation delay, ±10 μA IOFF leakage at VCC = 0 V, Schmitt-trigger control input tolerance, and TSSOP5 (SOT353-1) package compatibility with high-density PCB layouts.

Technical Context

This device implements a single-pole, single-throw (SPST) analog switch controlled by an OE input that enables bidirectional conduction between A and B ports when low. Its IOFF circuitry actively disables the switch and blocks backflow current when VCC = 0 V, enabling hot-swap and partial power-down system architectures.

The switch uses CMOS transmission-gate topology with Schmitt-triggered OE input (hysteresis ≥ 0.3 V), supports overvoltage-tolerant control inputs up to 3.6 V independent of VCC, and maintains rail-to-rail voltage handling (0 V to VCC) on both A and B I/O terminals under all operating conditions.

Key Specifications

Pinout & Package

TSSOP5 (SOT353-1) package: plastic thin shrink small outline, 5-lead, body width 1.25 mm, 0.65 mm pitch, 1.1 mm height.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74CBT1G125DBVR and 74LVC1G125GW,125, the 74CBTLV1G125GW,125 uniquely delivers IOFF-enabled hot-swap safety, lowest RON in its voltage class, and guaranteed 125 °C operation-making it the sole choice for thermally demanding, mixed-power-domain systems requiring zero backfeed risk.

Availability

74CBTLV1G125GW,125 is available at Aetrix Electronics and suitable for industrial automation, portable medical instrumentation, and aerospace data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74CBTLV1G125GW,125 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, reliable discrete, logic, and MOSFET solutions optimized for efficiency-critical applications in automotive, industrial, and mobile markets.

The 74CBTLV1G125 belongs to Nexperia's CBTLV (Configurable Bus Transceiver Low-Voltage) logic family, engineered specifically for low-voltage, high-speed digital interconnect isolation in space-constrained, thermally aggressive environments.

FAQ

Can 74CBTLV1G125GW,125 operate with VCC = 2.5 V and interface with 1.8 V logic?

Yes. The device supports VCC from 2.3 V to 3.6 V and features overvoltage-tolerant OE input rated to 3.6 V, allowing direct connection to 1.8 V control signals without level shifters. Signal switching on A/B ports remains rail-to-rail (0 V to 2.5 V), preserving logic margins for downstream 1.8 V receivers.

What is the maximum recommended load capacitance for maintaining <0.3 ns propagation delay?

At VCC = 3.3 V, the datasheet specifies tpd ≤ 0.25 ns with RL = ∞ Ω and CL ≤ 30 pF (Table 9). For loads exceeding 30 pF, propagation delay increases linearly per RC time constant-e.g., 50 pF adds ~0.1 ns delay. Keep total node capacitance ≤30 pF for guaranteed sub-0.3 ns timing.

How does the IOFF feature behave when OE is left floating during power-down?

OE must be actively pulled HIGH (e.g., via resistor to VCC) to ensure OFF-state during power-up/down. If floating, OE may float to indeterminate voltage, risking partial turn-on and uncontrolled backfeed current. The datasheet explicitly recommends tying OE to VCC through a pull-up resistor sized per the driver's sink capability.

Is thermal derating required for continuous operation at +125 °C ambient?

Yes. For the TSSOP5 (SOT353-1) package, Ptot derates linearly at 3.3 mW/K above +74 °C. At +125 °C ambient, derated Ptot = 250 mW − (125 − 74) × 3.3 mW = 81.7 mW. Designers must limit total dissipation-including I²R losses and ICC-to ≤80 mW under worst-case signal conditions.