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NXP Semiconductors 74HCT14PW,112
- Part No.:
- 74HCT14PW,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Gates and Inverters
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HCT14PW,112.pdf
- Description:
- IC INVERTER 6CH 6-INP 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:17,893
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Product details
Overview
74HCT14PW,112 from Nexperia is a hex inverting Schmitt trigger IC designed for noise-immune signal conditioning in digital systems. It operates from 4.5 V to 5.5 V, delivers TTL-compatible input thresholds (VT+ = 1.41 V typ, VT− = 0.85 V typ at VCC = 4.5 V), provides 6 independent buffered inversions with hysteresis (VH = 0.56 V typ), and supports industrial temperature range (−40 °C to +125 °C) in TSSOP14 package - used in waveform shaping and relaxation oscillator circuits.
For engineers reviewing the 74HCT14PW,112 datasheet, 74HCT14PW,112 pinout, 74HCT14PW,112 application, or 74HCT14PW,112 equivalent, key selection criteria include Schmitt-trigger hysteresis width, propagation delay (20–34 ns at VCC = 4.5 V), output drive capability (±4 mA), input clamp diode support for overvoltage tolerance, and TSSOP14 thermal performance (7.3 mW/K derating above 81 °C).
Technical Context
This device implements six independent CMOS inverter stages, each with asymmetric Schmitt-trigger input thresholds optimized for TTL-level interfacing. Its input structure includes integrated clamp diodes enabling safe operation with input voltages exceeding VCC when current-limited.
The logic function is strictly inverting (L→H, H→L), with hysteresis ensuring clean edge regeneration on slow-rising/falling signals. Dynamic behavior is characterized by propagation delays (tpd) and transition times (tt) measured under defined load (CL = 50 pF) and supply conditions, with CPD = 8 pF specifying dynamic power contribution.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with 5 V TTL and mixed-voltage logic systems without level shifters. |
| Input Thresholds (VT+, VT−) | 1.41 V / 0.85 V typ at VCC = 4.5 V - enables reliable recognition of TTL logic levels (0.8 V/2.0 V) with 560 mV hysteresis. |
| Propagation Delay (tpd) | 20 ns typ / 51 ns max at VCC = 4.5 V, CL = 50 pF - determines maximum operating frequency in timing-critical waveform shaping. |
| Output Drive (IO) | ±4.0 mA - sufficient to directly drive multiple 74-series inputs or small capacitive loads (< 50 pF) without buffering. |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood automotive modules, industrial PLC I/O, and high-reliability embedded control. |
| Power Dissipation Cap | 500 mW total, derating 7.3 mW/K above 81 °C - defines thermal limits in compact TSSOP14 PCB layouts with limited copper area. |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - reduces handling sensitivity during SMT assembly and field service. |
Pinout & Package
TSSOP14 (SOT402-1) package: 4.4 mm body width, 0.65 mm lead pitch, 1.2 mm height - optimized for high-density PCBs with improved thermal dissipation vs SO14.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Input (1A–6A) | Schmitt-triggered inverter inputs; accept slow edges and tolerate overvoltage via internal clamp diodes. |
| 2, 4, 6, 8, 10, 12 | Output (1Y–6Y) | Inverted, buffered outputs; each drives ±4 mA into resistive or 50 pF capacitive loads. |
| 7 | GND | Reference ground for all inputs, outputs, and supply return - must be low-impedance for noise immunity. |
| 14 | VCC | Positive supply rail (4.5–5.5 V); decoupling capacitor (100 nF) required within 5 mm for stable switching. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible input thresholds | VT+ = 1.41 V, VT− = 0.85 V at VCC = 4.5 V - eliminates need for external level-shifting when interfacing with legacy 5 V microcontrollers or sensors. |
| Integrated input clamp diodes | Enables use of series current-limiting resistors for inputs up to VCC + 0.5 V - simplifies protection against ESD or transient overvoltage. |
| Unlimited input rise/fall times | Valid for any edge rate - allows direct connection to RC-generated waveforms or noisy mechanical switch signals without added filtering. |
| Latch-up immunity | Exceeds 100 mA per JESD78 Class II Level B - prevents destructive latch-up during voltage transients or hot-plug events. |
| Wide temperature operation | Specified from −40 °C to +125 °C - supports deployment in engine control units, motor drives, and outdoor industrial gateways. |
Applications
| Waveform Shaping | Relaxation Oscillator |
|---|---|
|
Use Scenario: Converting noisy or slow-rising analog sensor outputs (e.g., thermistor-based voltage dividers) into clean digital logic edges for microcontroller GPIO capture. IC Role / Device Role / Timing Role: Six independent Schmitt inverters condition six separate channels - each providing hysteresis to reject sub-threshold noise and regenerate sharp transitions. Use Value: Eliminates external RC filters and comparator ICs, reducing BOM count and board space while maintaining timing accuracy across temperature. |
Use Scenario: Generating precise clock signals for low-power microcontrollers or LED blinkers using only one inverter, resistor, and capacitor. IC Role / Device Role / Timing Role: One inverter stage forms the gain element in a feedback loop with R-C network - Schmitt hysteresis defines oscillation thresholds and duty cycle stability. Use Value: Achieves predictable frequency (K-factor = 0.6 typ at VCC = 4.5 V) without crystal or external timer IC, lowering system cost and power. |
| Astable Multivibrator | Monostable Pulse Generation |
|
Use Scenario: Building self-running clock sources for display multiplexing or status indicator timing in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Two cascaded inverters with cross-coupled RC feedback generate continuous square waves - Schmitt inputs ensure consistent startup and duty cycle. Use Value: Delivers jitter-free output with <38 ns max propagation delay variation across temperature, enabling reliable timing without calibration. |
Use Scenario: Debouncing mechanical pushbuttons or limit switches in factory automation panels before feeding signals to PLC inputs. IC Role / Device Role / Timing Role: Single inverter stage converts switch bounce into a single clean pulse - hysteresis prevents multiple triggers from contact chatter. Use Value: Reduces firmware debounce overhead and eliminates need for software timers or external RC+Schmitt circuits, improving real-time response. |
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 |
|---|---|---|---|
| 74HC14PW,112 | CMOS input thresholds (VT+ = 4.4 V typ at VCC = 4.5 V); wider 2.0–6.0 V supply range | Better suited for mixed-voltage systems (e.g., 3.3 V MCU controlling 5 V peripherals) but incompatible with TTL logic levels | Select when full CMOS noise margin is needed and all upstream logic is CMOS-compatible. |
| SN74LV14APW | Lower VCC range (2.0–5.5 V); LV logic family with 3.3 V native optimization; VH = 0.5 V typ | Optimized for 3.3 V systems with lower dynamic power; not rated for 125 °C operation | Prefer for cost-sensitive consumer electronics where extended temperature range is unnecessary. |
Compared with 74HC14PW,112 and SN74LV14APW, the 74HCT14PW,112 uniquely bridges TTL and CMOS domains with guaranteed 4.5–5.5 V operation and TTL-input compatibility - making it the only choice for legacy 5 V designs requiring robust noise immunity and automotive-grade thermal performance.
Availability
74HCT14PW,112 is available at Aetrix Electronics and suitable for industrial control interfaces, automotive body electronics, and high-reliability embedded timing applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HCT14PW,112 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 essential efficiency technologies - delivering high-performance, reliable standard logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74HCT14 belongs to Nexperia's high-speed TTL-compatible logic family, engineered specifically for noise-prone environments where signal integrity, wide temperature operation, and interoperability with legacy 5 V systems are critical design requirements.
FAQ
What is the maximum input voltage allowed on 74HCT14PW,112 pins?
The absolute maximum input voltage is VCC + 0.5 V, enabled by internal clamp diodes. To avoid damage, external current-limiting resistors must restrict input current to ≤±20 mA when VI exceeds this range. This feature allows safe interfacing with 5.5 V signals in a 5 V system, provided resistor values are calculated per datasheet Equation 1.
Can 74HCT14PW,112 drive an LED directly?
No - its output current rating is ±4.0 mA, insufficient for typical LEDs requiring 5–20 mA. Driving an LED directly risks violating VOL/VOL specs and exceeding ICC limits. Use a discrete NPN transistor or dedicated LED driver IC; the 74HCT14PW,112 should serve only as a logic-level signal source in such configurations.
Why does propagation delay increase at higher temperatures?
Delay increases due to reduced carrier mobility and higher junction resistance in silicon at elevated temperatures. At +125 °C, tpd rises to 51 ns (max) vs 34 ns (max) at +25 °C - a 50% increase that must be accounted for in timing-critical multivibrator or oscillator designs where frequency stability is essential.
Is 74HCT14PW,112 suitable for automotive under-hood applications?
Yes - it is qualified for −40 °C to +125 °C operation and meets JESD78 latch-up immunity (Class II Level B). However, it is not AEC-Q100 qualified. For production automotive use, confirm system-level validation per ISO 16750 and consult Nexperia's automotive qualification roadmap before final design-in.
74HCT14PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Logic Type:
- Inverter
- Number of Circuits:
- 6
- Number of Inputs:
- 6
- Features:
- Schmitt Trigger
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Max):
- 2 µA
- Current - Output High, Low:
- 4mA, 4mA
- Input Logic Level - Low:
- 1.2V ~ 1.4V
- 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-TSSOP
74HCT14PW,112 FAQ
1.How can I place an order for 74HCT14PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT14PW,112 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 74HCT14PW,112 reliable?
The price and inventory of 74HCT14PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT14PW,112 is usually 5 days.
3.What payment methods are accepted for 74HCT14PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT14PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT14PW,112?
74HCT14PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT14PW,112 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 74HCT14PW,112?
For technical support, including 74HCT14PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT14PW,112 requirements.
6.How does Aetrix verify that 74HCT14PW,112 is sourced from the original manufacturer or authorized distributors?
All 74HCT14PW,112 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 74HCT14PW,112 meets industry standards.
7.What is the process for return or replacement of 74HCT14PW,112?
All 74HCT14PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT14PW,112, 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 74HCT14PW,112 part is unused and in its original packaging.
Return procedure for 74HCT14PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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