Nexperia USA Inc. 74LVT125D,118

Overview

74LVT125D,118 from Nexperia is a 3.3 V quad non-inverting 3-state buffer with bus-hold inputs, IOFF partial power-down support, and ±64 mA/–32 mA output drive. It operates from 2.7 V to 3.6 V, tolerates 5.5 V inputs, and delivers sub-4 ns propagation delay at 3.3 V - used in high-speed backplane and memory interface bus driving.

For engineers reviewing the 74LVT125D,118 datasheet, 74LVT125D,118 pinout, 74LVT125D,118 application, or 74LVT125D,118 equivalent, key selection criteria include 3-state timing (tPZH/tPLZ ≤ 4.7 ns), overvoltage-tolerant inputs, bus-hold current (±75–150 μA), and IOFF leakage (< ±100 μA at VCC = 0 V).

Technical Context

This BiCMOS device implements four independent non-inverting buffers, each with active-low 3-state enable (nOE). Each input features integrated bus-hold circuitry eliminating external pull-ups, and the IOFF protection disables outputs during power-down to block backflow current.

It supports live insertion/extraction and direct TTL-level interfacing while maintaining compatibility with 5 V buses. Input clamping voltage is –0.9 V (min), and output drive capability is asymmetric: +64 mA sink / –32 mA source at VCC = 3.0 V.

Key Specifications

Pinout & Package

74LVT125D,118 is supplied in SO14 (SOT108-1) package: plastic small outline, 14-lead, 3.9 mm body width, with standard JEDEC pin 1 index marking.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74LVT125D,118, the 74LVT125PW,118 offers identical functionality in a smaller footprint, while SN74LVC125APWR trades critical industrial protections (bus-hold, IOFF) for wider voltage range - making it unsuitable for hot-swap or floating-bus applications.

Availability

74LVT125D,118 is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory subsystem drivers, FPGA configuration circuits, and I/O expansion modules requiring stable component supply across extended temperature ranges.

Supply support for 74LVT125D,118 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 logic, analog, and MOSFET solutions optimized for efficiency, reliability, and manufacturability in industrial and automotive markets.

The 74LVT series targets high-speed, low-voltage bus interface applications where robustness, 3-state control, and mixed-voltage interoperability are essential - especially in programmable logic and memory subsystems.

FAQ

What is the maximum input voltage the 74LVT125D,118 can tolerate?

The device accepts input voltages up to +5.5 V regardless of VCC level, as confirmed in Table 4 (Limiting Values) and Table 5 (Recommended Operating Conditions). This overvoltage tolerance enables direct interfacing with 5 V logic without external level shifters or clamping diodes.

Does the 74LVT125D,118 support hot-plug or live insertion?

Yes - the datasheet explicitly states "Live insertion and extraction permitted" under Features and Benefits. This is enabled by IOFF circuitry that disables outputs and limits leakage to ±100 μA when VCC = 0 V, preventing back-current damage during board insertion.

How does the bus-hold function work, and what current does it provide?

Bus-hold uses internal feedback to maintain the last-valid logic state on unused inputs. Per Table 6, IBHL is +75 to +150 μA (LOW hold) and IBHH is –75 to –150 μA (HIGH hold) at VCC = 3 V - sufficient to override typical PCB leakage but not strong enough to drive external loads.

What is the worst-case propagation delay from input to output at 3.0 V supply?

At VCC = 3.0 V, the maximum tPLH and tPHL are both 4.0 ns (Table 7). This value applies across the full –40 °C to +85 °C operating range and includes process, voltage, and temperature variation margins.