Texas Instruments CLVC2G126MDCUTEP

Overview

CLVC2G126MDCUTEP from Texas Instruments is a dual 3-state bus buffer gate designed for 1.65-V to 5.5-V VCC operation, used in bidirectional data path isolation and level translation between mixed-voltage subsystems. It features ±24-mA output drive at 3.3 V, 6.8-ns max propagation delay at 3.3 V, and Ioff support for partial-power-down mode. It is deployed in military-grade avionics interface modules requiring stable signal integrity across –55°C to 125°C.

For engineers reviewing the CLVC2G126MDCUTEP datasheet, CLVC2G126MDCUTEP pinout, CLVC2G126MDCUTEP application, or CLVC2G126MDCUTEP equivalent, key selection criteria include guaranteed 3-state behavior during power sequencing, input tolerance up to 5.5 V independent of VCC, and validated ESD robustness (2000-V HBM) for harsh-environment deployment.

Technical Context

This device implements two independent noninverting buffers, each with dedicated 3-state control via separate OE inputs (1OE and 2OE). Output enable logic is active-high: Y = A when OE = H; Y = high-impedance when OE = L. The Ioff circuitry actively disables outputs during power-down, blocking reverse current flow even when VCC = 0 V and inputs/outputs are biased.

Designed for mixed-signal board-level interfacing, it supports voltage-level translation between 1.8-V, 2.5-V, 3.3-V, and 5-V domains without external level shifters. Input thresholds scale with VCC (VIH = 0.7×VCC min at 4.5–5.5 V), and outputs maintain rail-to-rail swing (VOH ≥ VCC – 0.1 V, VOL ≤ 0.55 V at 24-mA sink).

Key Specifications

Pinout & Package

VSSOP-8 (DCU) package: 2.3-mm × 2.0-mm body, 0.5-mm pitch, 0.9-mm max height, exposed pad not present. RoHS-compliant NIPDAU finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual 3-state buffer applications.

Compared with SN74LVC2G126DBVR and 74LVC2G126GW,125, CLVC2G126MDCUTEP uniquely delivers full –55°C to 125°C operation in the smallest qualified VSSOP footprint, with TI's enhanced defense-grade traceability (V62/14604-01XE) and extended product life cycle support.

Availability

CLVC2G126MDCUTEP is available at Aetrix Electronics and suitable for avionics data bus isolation, secure bootloader interfaces, and military radar front-end control requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CLVC2G126MDCUTEP 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with over 90 years of innovation in high-reliability electronics.

The SN74LVC2G126-EP product line delivers enhanced-performance, extended-temperature logic devices explicitly engineered for defense, aerospace, and medical systems where functional safety, long-term supply assurance, and radiation-tolerant design are mandatory.

FAQ

What is the maximum operating temperature range supported by CLVC2G126MDCUTEP?

CLVC2G126MDCUTEP is fully specified for operation from –55°C to 125°C ambient temperature. This extended range is validated per MIL-STD-883 test methods and enables use in engine bays, satellite payloads, and medical sterilization equipment where thermal extremes are routine. The device's thermal metrics (θJA = 204.3°C/W) allow accurate junction temperature prediction under real-world PCB layouts.

Does CLVC2G126MDCUTEP support level translation between 1.8-V and 5-V logic domains?

Yes, CLVC2G126MDCUTEP supports bidirectional level translation: its inputs tolerate up to 5.5 V regardless of VCC setting, and outputs swing rail-to-rail (VOH ≥ VCC – 0.1 V, VOL ≤ 0.55 V). When VCC = 1.8 V, it safely accepts 5-V inputs and drives 1.8-V loads; when VCC = 5 V, it drives 5-V outputs while accepting 1.8-V enables. No external components are needed.

How does the Ioff feature of CLVC2G126MDCUTEP protect circuits during partial power-down?

The Ioff circuitry in CLVC2G126MDCUTEP disables all outputs when VCC = 0 V, limiting reverse current to ±10 μA even if inputs or outputs are biased to 5.5 V. This prevents damaging backflow through powered-down sections of a system - critical in hot-pluggable modules or multi-rail FPGAs where subsystems power up/down asynchronously. CLVC2G126MDCUTEP maintains this protection across its full –55°C to 125°C range.

What is the recommended power-up sequence for CLVC2G126MDCUTEP to avoid bus contention?

To guarantee high-impedance outputs at power-up, tie both 1OE and 2OE pins to GND through pulldown resistors (minimum value determined by driver sink capability). Power GND before VCC, and ensure VCC ramps monotonically. CLVC2G126MDCUTEP's internal power-on reset does not force OE states; external pulldowns are mandatory for fail-safe initialization in avionics and medical systems.

Is CLVC2G126MDCUTEP pin-compatible with standard commercial SN74LVC2G126 variants?

Yes, CLVC2G126MDCUTEP uses the same VSSOP-8 (DCU) package and identical pinout as commercial SN74LVC2G126 variants (e.g., SN74LVC2G126DBVR), including 1A/1Y/1OE/GND/2OE/2Y/2A/VCC assignment. However, CLVC2G126MDCUTEP adds defense-grade screening, extended temperature validation, and TI's V62/14604-01XE traceability - making it a drop-in replacement where ruggedness and longevity are required.