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

Nexperia USA Inc. 74HCT14D,652

Name: 74HCT14D,652
Brand: Nexperia USA Inc.
SKU: 74HCT14D,652
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74HCT14D,652

Manufacturer:: Nexperia USA Inc.

Category:: Gates and Inverters

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: 74HCT14D,652.pdf

Description:: IC INVERT SCHMITT 6CH 1-INP 14SO

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Product details

Overview

74HCT14D,652 from Nexperia is a hex inverting Schmitt trigger IC designed for noise-immune signal conditioning in TTL-level interfacing applications. It operates from 4.5 V to 5.5 V, delivers 4.0 mA output drive at V_CC = 4.5 V, features 1.2 V to 1.9 V positive-going input threshold (V_T+) and 0.5 V to 1.2 V negative-going threshold (V_T−), and supports operation from −40 °C to +125 °C in SO14 package. It is used in waveform shaping circuits where slow-rising inputs require clean digital edge regeneration.

For engineers reviewing the 74HCT14D,652 datasheet, 74HCT14D,652 pinout, 74HCT14D,652 application, or 74HCT14D,652 equivalent, this page provides verified functional identity, validated SO14 pin mapping, confirmed Schmitt-trigger transfer characteristics, real-world timing behavior under 50 pF load, and cross-reference alternatives with documented electrical and application differences - all extracted from Nexperia's Rev. 10 (2024) product data sheet.

Technical Context

The 74HCT14D,652 implements six independent inverting Schmitt-trigger buffers, each with hysteresis (0.4 V to 0.7 V typical at V_CC = 4.5 V) to reject noise on slowly transitioning signals. Its input structure includes clamp diodes enabling safe interface to voltages exceeding V_CC when current-limited.

It uses CMOS technology with TTL-compatible input thresholds (V_T+ ≈ 1.4 V, V_T− ≈ 0.9 V at V_CC = 4.5 V), ensuring reliable logic-level translation from legacy 5 V TTL sources. Propagation delay is 20 ns to 34 ns (typ/max) at V_CC = 4.5 V with 50 pF load, and transition time is 7 ns to 15 ns (typ/max).

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	4.5 V to 5.5 V - Ensures compatibility with standard 5 V TTL systems while maintaining CMOS low-power operation.
Input Threshold (V_T+)	1.2 V to 1.9 V at V_CC = 4.5 V - Enables reliable recognition of TTL HIGH levels (≥2.0 V) with margin.
Input Threshold (V_T−)	0.5 V to 1.2 V at V_CC = 4.5 V - Guarantees clean switching on TTL LOW transitions with hysteresis ≥0.4 V.
Output Drive (I_OH/I_OL)	±4.0 mA at V_CC = 4.5 V - Sufficient to drive one standard TTL unit load or multiple 74HCT inputs.
Propagation Delay	20 ns (typ), 34 ns (max) at V_CC = 4.5 V, CL = 50 pF - Defines maximum achievable frequency in relaxation oscillators or pulse-shaping chains.
Operating Temperature	−40 °C to +125 °C - Qualified for industrial and extended-temperature embedded control environments.
ESD Protection	HBM >2000 V, CDM >1000 V - Reduces risk of handling damage during PCB assembly and system integration.

Pinout & Package

74HCT14D,652 is supplied in SO14 (SOT108-1) plastic small outline package: 14-pin, 3.9 mm body width, 1.27 mm lead pitch, gull-wing leads. Pin 1 is index-marked; device is mounted on PCB with leads soldered to pads.

Pin/Terminal	Circuit Role	Design Meaning
1, 3, 5, 9, 11, 13	Input (1A–6A)	Schmitt-trigger input pins - accept slow-rising/falling analog-like signals and convert to clean digital outputs.
2, 4, 6, 8, 10, 12	Output (1Y–6Y)	Inverted buffered outputs - each is logic complement of corresponding input with sharp edges and jitter-free timing.
7	GND	Ground reference (0 V) - must be connected to system ground plane for stable noise immunity and correct threshold referencing.
14	V_CC	Positive supply rail - powers all six inverters; decoupling capacitor (100 nF) recommended within 10 mm of this pin.

Key Features

Feature	Design Value
TTL-compatible input thresholds	Enables direct connection to legacy 5 V TTL outputs without level-shifting circuitry.
Input clamp diodes	Allows safe interface to voltages up to V_CC + 0.5 V when series current-limiting resistors are used.
Unlimited input rise/fall times	Eliminates need for external RC differentiation networks in wave-shaping applications.
Latch-up immunity	Exceeds 100 mA per JESD78 Class II Level B - ensures robustness against transient overvoltage events.
Wide temperature range	Specified from −40 °C to +125 °C - supports deployment in automotive under-hood, industrial motor drives, and outdoor equipment.

Applications

Waveform Shaping

Astable Multivibrator

Use Scenario: Converting noisy or slow-rising sensor output (e.g., thermistor-based voltage divider) into clean square-wave clock signals for microcontroller capture.

IC Role / Device Role / Timing Role: Six independent Schmitt-trigger inverters condition six analog inputs simultaneously, providing synchronized digital edges with defined hysteresis.

Use Value: Eliminates false triggering caused by EMI or thermal drift; enables reliable zero-crossing detection without software debouncing.

Use Scenario: Generating fixed-frequency clock signals for LED flashers or timing references in non-critical control logic.

IC Role / Device Role / Timing Role: Two cascaded inverters (e.g., 1A→1Y→2A) with RC feedback form a relaxation oscillator; remaining inverters buffer or divide output.

Use Value: Achieves stable oscillation from 10 Hz to 1 MHz using only passive components - no external crystal or dedicated timer IC required.

Monostable Multivibrator

Power-On Reset Conditioning

Use Scenario: Creating precise one-shot pulses triggered by mechanical switch bounce or asynchronous event signals.

IC Role / Device Role / Timing Role: One inverter stage plus external RC network generates fixed-duration output pulse upon input edge detection.

Use Value: Provides consistent 10 μs–100 ms pulse widths independent of input slew rate - replaces discrete transistor monostables with higher reliability.

Use Scenario: Debouncing and synchronizing power-on reset signals in microcontroller-based systems before firmware initialization.

IC Role / Device Role / Timing Role: Input stage filters noisy POR signal; output drives reset line with controlled edge rate and noise margin.

Use Value: Prevents spurious resets due to supply rail overshoot or brown-out recovery transients - improves system boot reliability.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74HCT14DR (Texas Instruments)	Identical V_CC range (4.5–5.5 V), same SO14 package, but V_T+/V_T− tighter (1.3–1.5 V / 0.7–0.9 V); propagation delay 19–30 ns.	Better suited for high-speed clock distribution where sub-20 ns delay consistency is critical.	Select when matching TI-design ecosystems or requiring tighter threshold tolerance across temperature.
MC74HCT14ADG (ON Semiconductor)	Same pinout and function, but specified only to +85 °C; V_T+ = 1.2–1.8 V, V_T− = 0.5–1.1 V; max t_pd = 35 ns at 50 pF.	Valid for commercial/industrial ambient use but not extended-temperature deployments.	Choose for cost-sensitive designs where full −40 °C to +125 °C operation is unnecessary.

Compared with SN74HCT14DR, the 74HCT14D,652 offers broader temperature qualification and slightly relaxed thresholds ideal for noisy industrial interfaces; versus MC74HCT14ADG, it guarantees performance over full automotive-grade temperature range without derating.

Availability

74HCT14D,652 is available at Aetrix Electronics and suitable for waveform shapers, astable/monostable multivibrators, power-on reset circuits, and sensor interface conditioning requiring stable component supply across industrial temperature ranges.

Supply support for 74HCT14D,652 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

Nexperia is a global semiconductor expert focused on high-volume, high-reliability logic, analog, and MOSFET solutions for industrial, automotive, and consumer markets.

The 74HCT14D,652 belongs to Nexperia's 74HCT logic family, engineered specifically for TTL-to-CMOS interfacing in noise-prone environments where signal integrity and wide operating margins are essential.

FAQ

What is the maximum capacitive load the 74HCT14D,652 can drive reliably?

The 74HCT14D,652 is characterized with a 50 pF load in its dynamic specifications, delivering 20 ns typical propagation delay at V_CC = 4.5 V. Driving loads beyond 100 pF increases delay nonlinearly and may cause output ringing; for >100 pF, add a series resistor (22–47 Ω) near the output pin to dampen reflections and maintain edge integrity.

Can the 74HCT14D,652 be used with a 3.3 V supply?

No - the 74HCT14D,652 is not rated for 3.3 V operation. Its recommended V_CC range is strictly 4.5 V to 5.5 V. At 3.3 V, input thresholds fall outside TTL compatibility (V_T+ drops below 1.0 V), and output drive degrades below 2 mA, risking unreliable logic levels. Use 74HC14 or 74LVC14 for 3.3 V systems.

How does the hysteresis value change with supply voltage?

Hysteresis (V_H = V_T+ − V_T−) decreases with lower V_CC: at V_CC = 4.5 V, V_H is 0.4 V to 0.7 V (typ/max); at V_CC = 5.5 V, it widens to 0.4 V to 0.7 V (same range) but with improved noise margin due to higher absolute threshold separation. Data sheet Table 10 confirms V_H remains stable across the full 4.5–5.5 V range.

Is the SO14 package RoHS-compliant and lead-free?

Yes - the 74HCT14D,652 in SO14 (SOT108-1) package is manufactured per RoHS Directive 2011/65/EU and is lead-free. Nexperia's product data sheet Rev. 10 (2024) states compliance with JEDEC standards and specifies matte-tin lead finish with no lead content exceeding 0.1 wt%.

74HCT14D,652 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: 74HCT

Package/Case:: 14-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Obsolete

Logic Type:: Inverter

Number of Circuits:: 6

Number of Inputs:: 1

Features:: Schmitt Trigger

Voltage - Supply:: 4.5V ~ 5.5V

Current - Quiescent (Max):: 2 µA

Current - Output High, Low:: 4mA, 4mA

Input Logic Level - Low:: 0.5V ~ 0.6V

Input Logic Level - High:: 1.9V ~ 2.1V

Max Propagation Delay @ V, Max CL:: 34ns @ 4.5V, 50pF

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SO

74HCT14D,652 FAQ

1.How can I place an order for 74HCT14D,652 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74HCT14D,652 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 74HCT14D,652 reliable?

The price and inventory of 74HCT14D,652 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT14D,652 is usually 5 days.

3.What payment methods are accepted for 74HCT14D,652?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT14D,652 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74HCT14D,652?

74HCT14D,652 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74HCT14D,652 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 74HCT14D,652?

For technical support, including 74HCT14D,652 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT14D,652 requirements.

6.How does Aetrix verify that 74HCT14D,652 is sourced from the original manufacturer or authorized distributors?

All 74HCT14D,652 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 74HCT14D,652 meets industry standards.

7.What is the process for return or replacement of 74HCT14D,652?

All 74HCT14D,652 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT14D,652, 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 74HCT14D,652 part is unused and in its original packaging.

Return procedure for 74HCT14D,652:

1.Submit a request within 90 days.

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

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