Diodes Incorporated 74LV05AS14-13

Overview

74LV05AS14-13 from Diodes Incorporated is a hex inverter IC with six independent open-drain outputs, designed for level translation and signal isolation in mixed-voltage systems. It operates across 2.0V–5.5V supply, accepts 5.5V-tolerant inputs, supports partial power-down via IOFF, sinks up to 12mA at 4.5V, and features Schmitt-trigger inputs for noise immunity-used in PC peripheral interfaces and power-down control circuits.

For engineers reviewing the 74LV05AS14-13 datasheet, 74LV05AS14-13 pinout, 74LV05AS14-13 application, or 74LV05AS14-13 equivalent, key selection criteria include open-drain drive capability, 5.5V input tolerance, IOFF-enabled power-down isolation, and SO-14 package compatibility with legacy 74-series footprint layouts.

Technical Context

This device implements six identical CMOS inverters with open-drain outputs, enabling wired-AND logic, I²C bus interfacing, and active-low signal conditioning. Each gate performs Y = A̅, with inputs fully 5.5V tolerant regardless of VCC level-enabling 3.3V-to-5V or 5V-to-3.3V voltage translation without external components.

The IOFF circuit disables output leakage during power-down by disconnecting internal paths when VCC = 0V, preventing back-current into powered subsystems. Schmitt-trigger inputs provide hysteresis (typ. 0.4V at 3V), improving noise rejection on slow or noisy control lines such as reset or enable signals.

Key Specifications

Pinout & Package

74LV05AS14-13 is housed in a 14-pin SOIC (SO-14) package with standard 1.27mm pitch, JEDEC MS-012 compliant outline, and 8.53–8.74mm body width. Pin 1 is marked with a notch or dot; pin 7 is GND, pin 14 is VCC.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex inverter with open-drain applications.

Compared with SN74LVC06APW and 74AHC05PW, the 74LV05AS14-13 uniquely combines 5.5V input tolerance, true open-drain outputs, and IOFF-making it the only option among the three that supports robust mixed-voltage isolation and bus arbitration without added components.

Availability

74LV05AS14-13 is available at Aetrix Electronics and suitable for PC peripheral interface design, power-down signal isolation, and I²C bus level translation requiring stable component supply and long-term manufacturability.

Supply support for 74LV05AS14-13 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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, industry-standard logic and power solutions for computing, industrial, and consumer markets.

The 74LV logic family targets low-voltage, mixed-supply applications-designed specifically for interoperability between 2.5V, 3.3V, and 5V systems while maintaining full 5.5V input tolerance and power-down safety.

FAQ

Can 74LV05AS14-13 be used as a direct replacement for 74HC05?

No-74HC05 has push-pull outputs and no 5.5V input tolerance. 74LV05AS14-13 uses open-drain outputs requiring external pull-ups and supports 5.5V-tolerant inputs. Substitution requires verifying bus topology, pull-up placement, and power-down behavior.

What is the maximum capacitive load the outputs can drive reliably?

At 5V supply, propagation delay remains within spec up to 50pF load capacitance (tPLZ/tPZL ≤ 8.5ns). For reliable I²C operation, total bus capacitance should stay ≤ 400pF-this device contributes only ~3.0pF per gate (Cpd), minimizing loading impact.

Does the IOFF feature require external control or configuration?

No-IOFF is automatic and intrinsic. When VCC drops to 0V, internal circuitry disables output FETs regardless of input state, preventing back-current. No enable pin, register setting, or external bias is needed.

Are Schmitt-trigger inputs enabled on all six channels?

Yes-every input (pins 1, 3, 5, 9, 11, 13) includes Schmitt-trigger action with typical hysteresis of 0.4V at 3V supply. This applies uniformly across temperature (−40°C to +125°C) and supply voltage (2.0–5.5V).