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Home > Products > Integrated Circuits (ICs) > Logic > Gates and Inverters

Diodes Incorporated 74AHCT32T14-13

Name: 74AHCT32T14-13
Brand: Diodes Incorporated
SKU: 74AHCT32T14-13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74AHCT32T14-13

Manufacturer:: Diodes Incorporated

Category:: Gates and Inverters

Package:: 14-TSSOP (0.173", 4.40mm Width)

Datasheet:: 74AHCT32T14-13.pdf

Description:: IC GATE OR 4CH 2-INP 14TSSOP

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Product details

Overview

74AHCT32T14-13 from Diodes Incorporated is a quad 2-input OR gate IC in TSSOP-14 package, operating at 4.5V–5.5V supply, delivering 8mA output drive at V_CC = 4.5V, with TTL-compatible inputs and Schmitt-trigger action on all inputs. It performs Boolean Y = A + B across four independent gates and is used in PC motherboard logic control, set-top box signal routing, and notebook I/O expansion.

For engineers reviewing the 74AHCT32T14-13 datasheet, 74AHCT32T14-13 pinout, 74AHCT32T14-13 application, or 74AHCT32T14-13 equivalent, key selection criteria include propagation delay (≤9.0 ns @ -40°C to +125°C), input voltage thresholds (V_IL = 0.8 V, V_IH = 2.0 V), output drive capability, ESD robustness (2 kV HBM), and TSSOP-14 thermal and board-space constraints.

Technical Context

This device implements four non-inverting OR logic functions in a single monolithic CMOS structure, with inputs tolerant of TTL voltage levels and internal Schmitt-trigger hysteresis ensuring noise immunity on slow-rising signals. Each gate has push-pull outputs capable of sourcing/sinking ±8 mA under specified conditions.

It operates within industrial temperature range (-40°C to +125°C) and supports 15 pF and 50 pF load capacitances, with propagation delay tightly characterized across voltage (4.5–5.5 V) and temperature extremes. Input clamp current is ±20 mA, and latch-up immunity exceeds 250 mA per JESD78 Class II.

Key Specifications

Parameter	Value and Actual Design Meaning
Logic Function	Four independent 2-input OR gates (Y = A + B)
Supply Voltage Range	4.5 V to 5.5 V - ensures compatibility with 5 V TTL/CMOS systems and margin against rail droop
Output Drive	±8 mA at V_CC = 4.5 V - sufficient for driving multiple 74-series inputs or small capacitive loads
Propagation Delay	≤9.0 ns max (V_CC = 4.5–5.5 V, T_A = -40°C to +125°C, C_L = 50 pF) - enables reliable timing in sub-100 MHz combinatorial paths
Input Thresholds	V_IL = 0.8 V, V_IH = 2.0 V - guarantees interoperability with legacy 5 V TTL outputs without level-shifting
ESD Protection	2 kV HBM, 1 kV CDM, 200 V MM - meets industrial handling requirements without external protection
Power Dissipation	500 mW total - allows full-speed operation in TSSOP-14 without forced airflow or heatsinking

Pinout & Package

TSSOP-14 package: 4.9 mm × 4.4 mm body, 0.65 mm pitch, 1.0 mm max height, lead-free and RoHS-compliant.

Pin/Terminal	Circuit Role	Design Meaning
1, 4, 9, 12	Input A (Gate 1–4)	Active-high logic input; Schmitt-triggered for noise rejection on slow edges
2, 5, 10, 13	Input B (Gate 1–4)	Second active-high logic input per gate; TTL-level compatible
3, 6, 8, 11	Output Y (Gate 1–4)	Push-pull CMOS output; drives high/low actively without pull-ups
7	GND	Ground reference for logic and power return; must be low-impedance
14	V_CC	Positive supply rail; bypassing with 100 nF ceramic capacitor near pin recommended

Key Features

Feature	Design Value
Schmitt-trigger inputs	Enables reliable switching on noisy or slowly transitioning signals (e.g., mechanical switch debouncing)
TTL-compatible input thresholds	Accepts standard 5 V TTL output levels directly-no level shifter required in mixed-logic designs
8 mA output drive at 4.5 V	Supports fan-out of ≥10 LS-TTL loads or direct interface to small-signal MOSFET gates
Industrial temperature range	Guaranteed operation from -40°C to +125°C junction temperature-suitable for embedded control in harsh environments
Lead-free & halogen-free "Green" construction	Meets EU RoHS 2 (2011/65/EU) and halogen limits (<900 ppm Br/Cl, <1000 ppm Sb) for eco-compliant manufacturing

Applications

PC Motherboard I/O Logic

Set-Top Box Signal Routing

Use Scenario: Combining status flags (e.g., USB detect, HDMI hot-plug, IR receive) into a single interrupt enable line.

IC Role / Device Role / Timing Role: Combinatorial OR gate aggregating asynchronous event signals before feeding to microcontroller interrupt controller.

Use Value: Reduces GPIO count on host MCU while preserving edge-triggered responsiveness via Schmitt-triggered inputs.

Use Scenario: Merging remote control decode success and front-panel button press signals to wake system from standby.

IC Role / Device Role / Timing Role: Active-high OR function enabling wake-on-event with no additional timing components.

Use Value: Eliminates need for discrete diode-OR or pull-up resistor networks-reduces BOM cost and board area.

Notebook Keyboard Controller Interface

Industrial PLC Digital Input Aggregation

Use Scenario: OR-ing multiple keyboard matrix scan row outputs to generate a "key pressed" strobe for the EC.

IC Role / Device Role / Timing Role: Fast, low-power combinatorial logic stage between matrix decoder and embedded controller interrupt path.

Use Value: Propagation delay ≤9.0 ns ensures sub-10 μs response time; 20 μA typical ICC minimizes battery drain in sleep states.

Use Scenario: Consolidating up to four isolated digital input channels (e.g., limit switches, safety interlocks) into one fault-active signal.

IC Role / Device Role / Timing Role: Fail-safe OR gate with robust ESD (2 kV HBM) and latch-up immunity (>250 mA) for factory-floor environments.

Use Value: Replaces discrete transistor-based OR with guaranteed noise immunity and predictable timing under EMI stress.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74AHCT32PWRE4 (TI)	TSSOP-14, same logic function and 4.5–5.5 V range; t_PD = 7.5 ns max (C_L = 50 pF, -40°C to +125°C)	Identical pinout and DC specs; slightly faster typical propagation delay but identical max rating	Preferred where TI's qualification documentation or long-term supply assurance is required
74LVC32AT14-13 (Diodes Inc.)	Lower V_CC range (1.65–5.5 V); higher speed (t_PD = 3.8 ns typ), but only 24 mA drive at 3.3 V	Supports dual-supply systems (e.g., 3.3 V logic with 5 V peripherals); not drop-in for pure 5 V designs due to lower V_IH (1.7 V)	Select when migrating toward 3.3 V operation or requiring wider voltage flexibility

Compared with SN74AHCT32PWRE4, the 74AHCT32T14-13 offers identical timing margins and industrial temp support but with Diodes' green packaging compliance; versus 74LVC32AT14-13, it provides guaranteed 5 V TTL interoperability at the cost of voltage scalability.

Availability

74AHCT32T14-13 is available at Aetrix Electronics and suitable for PC motherboard I/O logic, set-top box signal routing, and industrial PLC digital input aggregation requiring stable component supply across extended temperature and long production lifecycles.

Supply support for 74AHCT32T14-13 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 components for computing, consumer, and industrial markets.

The 74AHCT32 belongs to Diodes' advanced logic family, designed specifically for robust 5 V system interfacing with enhanced ESD tolerance, wide temperature operation, and green manufacturing compliance.

FAQ

Can 74AHCT32T14-13 operate reliably at 4.5 V supply?

Yes. The device is fully specified from 4.5 V to 5.5 V, with all parameters-including propagation delay (≤9.0 ns), output drive (±8 mA), and input thresholds (V_IL = 0.8 V, V_IH = 2.0 V)-guaranteed across this range at temperatures from -40°C to +125°C. No derating is required at minimum V_CC.

Are unused inputs required to be terminated?

Yes. Per the datasheet's Recommended Operating Conditions, all unused inputs must be tied to either V_CC or GND to prevent floating nodes, which could cause excessive ICC, erratic output behavior, or increased EMI susceptibility. Pull-up or pull-down resistors ≥10 kΩ are acceptable.

Does 74AHCT32T14-13 support mixed-voltage interfacing with 3.3 V devices?

No. Its input thresholds (V_IH = 2.0 V min) and output VOH (≥3.8 V at 8 mA) are optimized for 5 V TTL/CMOS systems. While 3.3 V outputs may meet V_IH marginally, they lack guaranteed noise margin; use level translators like TXB0104 for reliable 3.3 V ↔ 5 V interfacing.

What is the thermal resistance (θ_JA) of the TSSOP-14 package?

The TSSOP-14 package has a typical junction-to-ambient thermal resistance of 130°C/W under JEDEC-standard PCB conditions (2-layer board, 1 in² copper). With 500 mW max power dissipation and 125°C max T_J, ambient temperature must remain ≤75°C for safe continuous operation without heatsinking.

74AHCT32T14-13 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: 74AHCT

Package/Case:: 14-TSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Logic Type:: OR Gate

Number of Circuits:: 4

Number of Inputs:: 2

Features:: -

Voltage - Supply:: 4.5V ~ 5.5V

Current - Quiescent (Max):: 20 µA

Current - Output High, Low:: 8mA, 8mA

Input Logic Level - Low:: 0.8V

Input Logic Level - High:: 2V

Max Propagation Delay @ V, Max CL:: 7.9ns @ 5V, 50pF

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-TSSOP

74AHCT32T14-13 FAQ

1.How can I place an order for 74AHCT32T14-13 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74AHCT32T14-13 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 74AHCT32T14-13 reliable?

The price and inventory of 74AHCT32T14-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT32T14-13 is usually 5 days.

3.What payment methods are accepted for 74AHCT32T14-13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT32T14-13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74AHCT32T14-13?

74AHCT32T14-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74AHCT32T14-13 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 74AHCT32T14-13?

For technical support, including 74AHCT32T14-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT32T14-13 requirements.

6.How does Aetrix verify that 74AHCT32T14-13 is sourced from the original manufacturer or authorized distributors?

All 74AHCT32T14-13 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74AHCT32T14-13 meets industry standards.

7.What is the process for return or replacement of 74AHCT32T14-13?

All 74AHCT32T14-13 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT32T14-13, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 74AHCT32T14-13 part is unused and in its original packaging.

Return procedure for 74AHCT32T14-13:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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