Diodes Incorporated 74HC32T14-13

Overview

74HC32T14-13 from Diodes Incorporated is a quad 2-input OR gate IC in TSSOP-14 package, operating from 2.0V to 6.0V supply, delivering 4mA output drive at 4.5V, with Schmitt-trigger inputs and CMOS low-power logic functionality-used in PC motherboard glue logic and peripheral interface signal conditioning.

For engineers reviewing the 74HC32T14-13 datasheet, 74HC32T14-13 pinout, 74HC32T14-13 application, or 74HC32T14-13 equivalent, key selection criteria include input threshold stability across voltage range, propagation delay consistency at 4.5V/6.0V, output drive capability under 4mA load, and TSSOP-14 thermal performance in high-density PCB layouts.

Technical Context

This device implements four independent Boolean OR functions (Y = A + B) using standard CMOS push-pull outputs. Each gate features Schmitt-trigger action on both inputs, enabling noise-immune signal reception across varying logic thresholds.

It operates within –40°C to +125°C ambient temperature, supports 50 pF capacitive loads, and maintains t_PD ≤ 27 ns (max) at V_CC = 4.5V and t_PD ≤ 23 ns (max) at V_CC = 6.0V-critical for synchronous timing in legacy TTL-compatible digital subsystems.

Key Specifications

Pinout & Package

TSSOP-14 package: 4.9 mm × 4.4 mm body, 0.65 mm pitch, 1.2 mm max height, exposed pad optional, JEDEC MO-153 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74HC32PW and MC74HC32ADTR2G, the 74HC32T14-13 offers identical functional behavior and package compatibility, with Diodes Incorporated's validated ESD robustness (2 kV HBM) and extended –40°C to +125°C operational range supporting industrial-grade reliability without derating.

Availability

74HC32T14-13 is available at Aetrix Electronics and suitable for PC motherboard design, industrial I/O expansion modules, consumer audio signal routing, and legacy printer interface logic requiring stable component supply and long-term lifecycle support.

Supply support for 74HC32T14-13 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, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the U.S.

The 74HC logic family targets cost-sensitive, high-reliability digital interface and glue logic applications-designed for interoperability with legacy TTL systems while delivering CMOS power efficiency and noise immunity.

FAQ

What is the maximum operating temperature for the 74HC32T14-13?

The 74HC32T14-13 is rated for continuous operation from –40°C to +125°C ambient temperature. Its junction temperature limit is +150°C, and thermal resistance θ_JA for TSSOP-14 is approximately 130°C/W-requiring minimal copper area for heatsinking in most applications.

Can unused inputs be left floating?

No. Unused inputs must be tied to either V_CC or GND to prevent undefined logic states, increased power consumption, and potential oscillation. The datasheet explicitly recommends this in Note 6 under Recommended Operating Conditions.

Does the 74HC32T14-13 support 3.3V-only operation?

Yes. With a guaranteed V_CC range of 2.0V–6.0V, the device fully supports 3.3V operation: VIH(min) = 2.1V and VIL(max) = 1.35V at V_CC = 3.3V, providing >0.6V noise margin for both logic levels.

Is the TSSOP-14 package RoHS and halogen-free?

Yes. The 74HC32T14-13 is fully RoHS 2 compliant (2011/65/EU), lead-free, and halogen-free per Diodes Incorporated's "Green" definition: Br < 900 ppm, Cl < 900 ppm (Br+Cl < 1500 ppm), Sb < 1000 ppm-verified in material declarations.