onsemi NLVVHC1G125DFT1G

Overview

NLVVHC1G125DFT1G from onsemi is a single non-inverting 3-state buffer IC designed for level-shifting and bus isolation in low-voltage digital systems. It operates from 2.0 V to 5.5 V, delivers 3.5 ns typical propagation delay at 5 V, supports 8 mA output drive at 3.0 V, and features over-voltage tolerant inputs/outputs up to 5.5 V - enabling safe interfacing between 3 V and 5 V logic domains in portable instrumentation and industrial control modules.

For engineers reviewing the NLVVHC1G125DFT1G datasheet, pinout, applications, or equivalent options, this page provides verified functional identity, SC-88A package mapping, confirmed 5-pin pinout with OE/A/Y/GND/VCC assignment, IOFF partial power-down support, and two validated alternative parts for voltage-level translation use cases.

Technical Context

The NLVVHC1G125DFT1G implements a three-stage CMOS architecture with buffered 3-state output, delivering high noise immunity and stable switching behavior. Its input structure tolerates voltages up to 5.5 V independent of VCC, allowing robust 5 V-to-3 V interface operation without external clamping.

It includes IOFF circuitry that disables I/O leakage when VCC = 0 V, supporting hot-insertion and partial power-down modes. Output structures remain protected during VCC = 0 V and when output voltage exceeds VCC, preventing latch-up or damage during supply sequencing mismatches.

Key Specifications

Pinout & Package

Package: SC-88A (Case 419A), 5-pin, 2.0 mm × 1.25 mm × 0.95 mm, lead pitch 0.65 mm, Pb-free, RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G125DBVR and 74AUP1G125GW,125, the NLVVHC1G125DFT1G uniquely supports 5.5 V over-voltage tolerant I/O across its full 2.0–5.5 V supply range - making it the only choice among the three for mixed-voltage bus isolation where 5 V signals must coexist with lower-VCC logic.

Availability

NLVVHC1G125DFT1G is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable medical device logic, automotive body control modules, and PLC I/O expansion cards requiring stable component supply across extended temperature ranges and mixed-voltage domains.

Supply support for NLVVHC1G125DFT1G 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.

The NLVVHC1G125DFT1G belongs to the VHC1G logic family, engineered for low-power, high-speed voltage-level translation and bus isolation in space-constrained, mixed-supply embedded systems.

FAQ

What is the function of the OE pin on the NLVVHC1G125DFT1G?

The OE (Output Enable) pin on the NLVVHC1G125DFT1G is an active-low control input that places the Y output in high-impedance (tri-state) when driven high, and enables non-inverting pass-through of the A input to Y when driven low. This allows bidirectional bus control and signal isolation without external gating logic. The NLVVHC1G125DFT1G's OE pin tolerates up to 5.5 V regardless of VCC, supporting flexible control signaling across voltage domains.

Does the NLVVHC1G125DFT1G support hot-plug operation?

Yes, the NLVVHC1G125DFT1G supports hot-plug operation due to its IOFF feature, which disables input/output leakage paths when VCC = 0 V. This prevents back-powering of the supply rail and avoids signal contention during live insertion or removal of daughterboards. The NLVVHC1G125DFT1G also features over-voltage tolerant I/O (up to 5.5 V), protecting against transient overvoltage during connection events.

Can the NLVVHC1G125DFT1G interface 5 V logic signals to a 2.5 V microcontroller?

Yes, the NLVVHC1G125DFT1G can safely interface 5 V logic signals to a 2.5 V microcontroller. Its inputs and outputs tolerate −0.5 V to +5.5 V independent of VCC, and it operates down to 2.0 V. When powered at 2.5 V, the NLVVHC1G125DFT1G accepts 5 V inputs without damage and produces 2.5 V-compatible output levels - eliminating the need for external level-shifting components in mixed-voltage signal paths.

What is the maximum operating temperature for the NLVVHC1G125DFT1G?

The NLVVHC1G125DFT1G is rated for continuous operation from −55 °C to +125 °C, meeting extended industrial and automotive under-hood requirements. This specification is validated per the manufacturer's recommended operating conditions and applies to the SC-88A package variant. The NLVVHC1G125DFT1G maintains full DC and AC performance across this range, including guaranteed VOH/VOL and tPD limits at temperature extremes.

Is the NLVVHC1G125DFT1G pin-compatible with other single-gate buffers in the same package?

No - the NLVVHC1G125DFT1G uses a non-standard pinout for SC-88A: Pin 1 = OE, Pin 2 = A, Pin 3 = GND, Pin 4 = Y, Pin 5 = VCC. This differs from common alternatives like SN74LVC1G125 (Pin 1 = A, Pin 2 = GND, Pin 3 = Y, Pin 4 = VCC, Pin 5 = OE). PCB layout must follow the NLVVHC1G125DFT1G-specific assignment; swapping without revision risks functional failure or damage.