Diodes Incorporated 74LV32AT14-13

Overview

74LV32AT14-13 from Diodes Incorporated is a quad 2-input OR gate IC in TSSOP-14 package, operating from 2.0V to 5.5V supply, with 5.5V-tolerant inputs, IOFF-enabled partial power-down protection, and Schmitt-trigger inputs. It delivers 12mA output drive at 4.5V and supports voltage translation between 3.3V and 5V logic domains in PC and peripheral interfaces.

For engineers reviewing the 74LV32AT14-13 datasheet, 74LV32AT14-13 pinout, 74LV32AT14-13 application, or 74LV32AT14-13 equivalent, key selection criteria include input voltage tolerance (5.5V), IOFF leakage (<5μA), propagation delay (3.6ns typ @5V), output drive capability (±12mA), and TSSOP-14 thermal and board-space constraints.

Technical Context

This device implements four independent Boolean OR functions (Y = A + B) using CMOS logic with push-pull outputs. Its IOFF circuitry actively disables outputs during power-down to prevent back-current flow, enabling safe use in mixed-voltage systems with asynchronous power sequencing.

All inputs feature Schmitt-trigger action for noise immunity, and the design meets JESD22 ESD ratings (2kV HBM, 1kV CDM, 200V MM) and JESD78 latch-up immunity (>100mA). Input thresholds scale with VCC (VIH = 0.7×VCC, VIL = 0.3×VCC), ensuring robust operation across 2.0–5.5V.

Key Specifications

Pinout & Package

TSSOP-14 (Thin Shrink Small Outline Package), 4.9mm × 4.4mm body, 0.65mm pitch, 1.2mm max height, lead-free and RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad 2-input OR gate applications.

Compared with SN74LVC32APW and 74AHC32PW, the 74LV32AT14-13 uniquely combines 5.5V input tolerance, IOFF protection, and Schmitt-trigger inputs-making it the only option qualified for robust, mixed-voltage, hot-pluggable logic interfacing without additional discrete components.

Availability

74LV32AT14-13 is available at Aetrix Electronics and suitable for PC motherboard power sequencing, USB peripheral interface logic, and industrial PLC input conditioning requiring stable component supply and long-term lifecycle support.

Supply support for 74LV32AT14-13 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, energy-efficient solutions for computing, industrial, and consumer markets.

The 74LV logic family targets low-voltage, mixed-supply digital interfacing with emphasis on power-down safety, voltage translation, and noise immunity-designed specifically for modern embedded systems with aggressive power management and heterogeneous voltage domains.

FAQ

Can 74LV32AT14-13 be used with 5V inputs while powered from 3.3V?

Yes. Its inputs tolerate up to 5.5V regardless of VCC, enabling safe 5V-to-3.3V level translation without external resistors or clamps. This is confirmed by VI absolute maximum rating (−0.5V to +7.0V) and recommended operating condition (0V to 5.5V input range at any VCC from 2.0V to 5.5V).

What happens to outputs during power-down (VCC = 0V)?

IOFF circuitry disables all outputs, limiting leakage current to <5μA and preventing back-current flow from live inputs. This behavior is verified under Electrical Characteristics (IOFF test condition: VI or VO = 0 to 5.5V, VCC = 0V) and ensures system-level safety during hot-swap or partial power-down sequences.

Does this device require external pull-up or pull-down resistors on unused inputs?

No-unused inputs must be tied to VCC or GND per Recommended Operating Conditions (Note 5), but not via resistors. The device has no internal weak pull-ups; floating inputs cause excessive ICC and potential oscillation. Direct connection avoids timing uncertainty and ensures defined logic states per gate truth table.

Is the TSSOP-14 package compatible with standard SO-14 PCB footprints?

No. TSSOP-14 has 0.65mm pin pitch and 4.9mm × 4.4mm body, while SO-14 uses 1.27mm pitch and 8.65mm × 3.9mm body. Pad layout differs significantly-using SO-14 land patterns will cause solder bridging or open circuits. Refer to Diodes AP02001 for correct TSSOP-14 footprint dimensions (X = 0.45mm, Y = 1.45mm, C1 = 5.9mm, C2 = 0.65mm).