Diodes Incorporated 74LVC14AT14-13

Overview

74LVC14AT14-13 from Diodes Incorporated is a hex Schmitt-trigger inverter IC in TSSOP-14 package, operating from 1.65V to 5.5V supply, with 5.5V-tolerant inputs, ±24mA drive capability at 3.3V, and IOFF partial-power-down protection-used for noise-immune signal conditioning in mixed-voltage logic interfaces.

For engineers reviewing the 74LVC14AT14-13 datasheet, 74LVC14AT14-13 pinout, 74LVC14AT14-13 application, or 74LVC14AT14-13 equivalent, key selection factors include Schmitt-trigger hysteresis (0.3V min), propagation delay (2.5–9.5 ns), voltage translation capability, IOFF leakage (<20 µA), and TSSOP-14 thermal resistance (θJA = 159°C/W).

Technical Context

The 74LVC14AT14-13 implements six independent inverters, each with asymmetric Schmitt-trigger input thresholds (VT+ = 0.9–2.0 V, VT− = 0.4–1.5 V) enabling robust noise rejection in slow-rising or noisy digital signals. Its IOFF circuit actively disables outputs during power-down, preventing back-current flow when VCC = 0 V.

It supports bidirectional voltage translation between 1.8V, 2.5V, 3.3V, and 5V domains due to 5.5V-tolerant inputs and rail-to-rail output swing. The device meets JESD22 ESD ratings (2 kV HBM, 1 kV CDM, 200 V MM) and exceeds 250 mA latch-up immunity per JESD78 Class II.

Key Specifications

Pinout & Package

TSSOP-14 (Thin Shrink Small Outline Package), 4.4 mm × 5.0 mm body, 0.65 mm pitch, exposed pad optional, JEDEC MO-153 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC14APWR and 74LVC14ABQ,115, the 74LVC14AT14-13 offers best-in-class IOFF leakage (<20 µA) and lowest typical ICC (10 µA), making it optimal for battery-backed or always-on subsystems where quiescent power matters most.

Availability

74LVC14AT14-13 is available at Aetrix Electronics and suitable for industrial sensor interfaces, embedded reset conditioning, and USB power control requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for 74LVC14AT14-13 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 integrated circuits, specializing in high-reliability, energy-efficient components for industrial, computing, and consumer markets.

The 74LVC14A belongs to Diodes' LVC logic family, designed specifically for low-voltage, mixed-signal interfacing with robust noise immunity, voltage translation, and partial-power-down safety in real-world embedded systems.

FAQ

Can the 74LVC14AT14-13 operate with VCC = 1.8 V while accepting 5 V inputs?

Yes. The device is explicitly rated for 1.65–5.5 V supply and 5.5 V-tolerant inputs. At VCC = 1.8 V, inputs up to 5.5 V are safely accepted without damage or clamping, enabling reliable level shifting from legacy 5 V logic to modern low-voltage controllers.

What is the maximum capacitive load this device can drive reliably?

Based on Cpd = 8.0 pF per gate and measured tPD up to 9.5 ns under 30 pF load, the 74LVC14AT14-13 maintains clean edges driving ≤30 pF loads at 3.3 V. For heavier loads (>50 pF), series termination or buffer staging is recommended to avoid rise/fall time degradation.

Does the IOFF feature require external pull-up/down resistors?

No. IOFF activates automatically when VCC = 0 V, forcing all outputs into high-impedance state regardless of input states. No external resistors are needed-inputs may float, but outputs remain safely isolated to prevent back-current in multi-rail systems.

How does the Schmitt trigger improve performance over standard CMOS inverters in reset circuits?

Standard inverters exhibit undefined switching near VCC/2, causing chatter on slow-rising reset signals. The 74LVC14AT14-13's 0.3 V minimum hysteresis guarantees monotonic transition: VT+ (e.g., 1.1 V) defines turn-on, VT− (e.g., 0.8 V) defines turn-off-eliminating oscillation and ensuring single, glitch-free reset assertion.