Diodes Incorporated 74LVC1G14W5-7

Overview

74LVC1G14W5-7 from Diodes Incorporated is a single Schmitt-trigger inverter IC in SOT25 package, operating from 1.65V to 5.5V supply, with 5.5V-tolerant inputs, ±24mA output drive at 3.3V, and IOFF partial-power-down protection. It enables robust signal conditioning in mixed-voltage logic interfaces, such as USB peripheral reset line debouncing or microcontroller GPIO input cleanup.

For engineers reviewing the 74LVC1G14W5-7 datasheet, 74LVC1G14W5-7 pinout, 74LVC1G14W5-7 application, or 74LVC1G14W5-7 equivalent, key selection criteria include hysteresis width (0.35–1.20V), propagation delay (0.7–4.4ns at 3.3V/15pF), IOFF leakage (<±10µA), and 5.5V input tolerance in sub-2V supply systems.

Technical Context

This device implements a positive-logic inverting Schmitt trigger with asymmetric input thresholds: VT+ ranges from 0.70V (1.65V VCC) to 3.33V (5.5V VCC); VT− ranges from 0.30V to 2.35V. Hysteresis ΔVT varies from 0.30V to 1.20V across voltage and temperature, ensuring noise immunity in noisy digital environments.

Its IOFF circuit actively disables output during power-down, blocking reverse current flow when VCC = 0V while inputs or outputs remain biased to 5.5V. The push-pull output supports rail-to-rail switching and drives capacitive loads up to 50pF with guaranteed timing performance across −40°C to +125°C.

Key Specifications

Pinout & Package

SOT25 (3.0mm × 2.8mm × 1.2mm, 0.95mm lead pitch) - compact 5-pin SC-74A package with exposed pad option; optimized for high-density PCB layouts and automated placement.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schmitt-trigger inverter applications.

Compared with SN74LVC1G14DBVR and 74AUP1G14GW,125, the 74LVC1G14W5-7 uniquely balances low ICC, robust IOFF, and ±24mA drive in a qualified industrial-grade SOT25 package - making it optimal for mixed-voltage embedded control where reliability and power-state integrity are co-prioritized.

Availability

74LVC1G14W5-7 is available at Aetrix Electronics and suitable for USB peripheral design, microcontroller signal conditioning, and level-shifting interface applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.

Supply support for 74LVC1G14W5-7 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

Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and logic solutions, with emphasis on high-reliability, low-power, and application-optimized components for industrial and consumer markets.

The 74LVC logic family targets mixed-voltage digital interfacing, offering wide supply range, 5V-tolerant inputs, and advanced power management features like IOFF - designed specifically for space-constrained, multi-rail embedded systems.

FAQ

Can 74LVC1G14W5-7 operate reliably at 1.65V supply while accepting 5.5V input signals?

Yes. The device is fully specified for 1.65V to 5.5V VCC operation and guarantees 5.5V-tolerant inputs across that entire range. At 1.65V VCC, VT+ is 0.70–1.20V and VT− is 0.30–0.75V, delivering usable hysteresis and noise margin even at minimum supply. Input clamp structures prevent damage or leakage beyond datasheet limits.

What is the maximum capacitive load this inverter can drive while maintaining guaranteed tpd?

The datasheet specifies propagation delay (tpd) with CL = 15pF and CL = 30/50pF test conditions. At 3.3V VCC and CL = 50pF, tpd is guaranteed ≤7.0ns (−40°C to +125°C). Driving >50pF increases delay nonlinearly and may degrade edge rate; for >100pF loads, add series termination or consider buffer staging.

Does the NC pin (Pin 4) require any PCB layout treatment?

Pin 4 is internally unconnected. Diodes Incorporated recommends leaving it floating or connecting it to GND - not VCC - to minimize parasitic coupling. No solder mask opening or thermal relief is needed. Avoid routing high-speed or noisy traces adjacent to this pin to prevent capacitive feedthrough.

How does IOFF behavior differ from standard high-impedance tri-state outputs?

IOFF is an automatic, voltage-controlled feature that disables the output stage when VCC = 0V, regardless of input state. Unlike tri-state, it requires no OE pin or control logic. It blocks both sink and source current paths, limiting leakage to ±10µA - enabling safe back-driving prevention during partial power-down without software intervention.