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Nexperia USA Inc. 74HCT9114D,118
- Part No.:
- 74HCT9114D,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Gates and Inverters
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74HCT9114D,118.pdf
- Description:
- IC INVERT SCHMITT 9CH 1-INP 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,839
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Product details
Overview
74HCT9114D,118 from Nexperia is a 9-bit inverting Schmitt trigger buffer with open-drain outputs, designed for noise-immune signal conditioning and level translation between TTL and CMOS logic domains. It operates from 4.5 V to 5.5 V, features TTL-compatible input thresholds (VT+ = 1.5 V typ, VT− = 1.06 V typ at VCC = 4.5 V), 9-channel independent buffering, and supports −40 °C to +125 °C industrial temperature range - used in industrial sensor interface modules where slow-rising analog-derived signals require clean digital conversion.
For engineers reviewing the 74HCT9114D,118 datasheet, 74HCT9114D,118 pinout, 74HCT9114D,118 application, or 74HCT9114D,118 equivalent, key selection criteria include Schmitt hysteresis width (0.44 V typ), open-drain output drive capability (IO = ±4.0 mA), propagation delay (17–31 ns at VCC = 4.5 V), and SO20 package compatibility with legacy 74-series board layouts.
Technical Context
This device implements nine independent inverting Schmitt-trigger input stages feeding open-drain NMOS output transistors, enabling wired-AND bus configurations and voltage-level flexibility. Each channel provides hysteresis (VH = 0.44 V typ) to reject noise on slow-transitioning inputs such as mechanical switch bounce or RC-filtered sensor outputs.
The input stage includes integrated clamp diodes allowing safe interfacing to voltages exceeding VCC when current-limiting resistors are used. Output stage design supports sink-only operation up to 4.0 mA per channel with VOL ≤ 0.26 V at IO = 4.0 mA and VCC = 4.5 V, meeting I²C-bus and interrupt-line requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage (VCC) | 4.5 V to 5.5 V - ensures compatibility with 5 V TTL systems while maintaining CMOS low-power operation |
| Input Threshold (VT+ / VT−) | 1.50 V / 1.06 V typ at VCC = 4.5 V - enables reliable recognition of TTL logic levels (2.0 V/0.8 V) with margin |
| Hysteresis Width (VH) | 0.44 V typ - suppresses chatter on noisy or slowly varying inputs like pushbutton or thermistor-based signals |
| Propagation Delay (tpd) | 17–31 ns at VCC = 4.5 V, CL = 50 pF - suitable for medium-speed digital control and status monitoring paths |
| Output Sink Current (IO) | ±4.0 mA - drives standard LED indicators or pulls down microcontroller interrupt lines without external pull-downs |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood automotive subsystems and industrial motor control enclosures |
| Input Capacitance (CI) | 3.5 pF - minimizes loading on high-impedance source circuits such as crystal oscillator feedback paths |
Pinout & Package
74HCT9114D,118 is housed in a plastic small outline package (SO20), SOT163-1, with 20 leads and 7.5 mm body width - compatible with standard SOIC-20 footprints and reflow soldering profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–9 (A0–A8) | Data input | Schmitt-triggered inverting inputs accepting slow-rising signals; clamp diodes permit overvoltage-safe interfacing |
| 10 | GND | Ground reference for all input thresholds and output logic levels |
| 11–19 (Y8–Y0) | Data output | Open-drain NMOS outputs - require external pull-up for HIGH state; support wired-AND and bus arbitration |
| 20 | VCC | Positive supply rail; powers internal logic and defines output HIGH level via external pull-up |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible Schmitt inputs | VT+ = 1.5 V / VT− = 1.06 V at VCC = 4.5 V - eliminates need for external level-shifting when interfacing 5 V TTL sources |
| Open-drain outputs | Supports multi-drop bus topologies and mixed-voltage signaling (e.g., 3.3 V MCU with 5 V pull-up) |
| Wide temperature range | −40 °C to +125 °C operation - validated for use in engine control units and power converter monitoring circuits |
| Low static current | ICC ≤ 8.0 μA at VCC = 5.5 V - enables always-on sensor wake-up logic without significant battery drain |
| ESD robustness | HBM > 2000 V, CDM > 1000 V - withstands handling and board-level ESD events in automated assembly environments |
Applications
| Industrial Pushbutton Interface | Motor Feedback Signal Conditioning |
|---|---|
Use Scenario: Mechanical pushbuttons connected via long cables in factory automation panels generate slow, noisy edges susceptible to contact bounce and EMI. IC Role / Device Role / Timing Role: Inverting Schmitt buffer cleans and digitizes each button signal before routing to PLC input module. Use Value: 0.44 V hysteresis rejects sub-100 ns noise spikes; open-drain outputs allow shared interrupt line across 9 buttons using single pull-up resistor. |
Use Scenario: Hall-effect rotor position sensors in BLDC motor drives produce low-slew-rate analog pulses affected by electromagnetic interference near power stages. IC Role / Device Role / Timing Role: Nine-channel buffer conditions individual phase feedback signals prior to microcontroller capture timer inputs. Use Value: Propagation delay variation < 14 ns across channels ensures synchronized edge timing; −40 °C to +125 °C rating matches motor housing thermal profile. |
| I²C Bus Voltage Translation | Legacy System Logic Level Bridging |
Use Scenario: Interfacing 3.3 V I²C master to 5 V peripheral devices requiring bidirectional data line level shifting. IC Role / Device Role / Timing Role: Open-drain Yn outputs serve as active-low drivers on SDA/SCL lines with external 5 V pull-ups. Use Value: Input threshold compatibility allows direct connection to 3.3 V master outputs; VOL ≤ 0.26 V guarantees valid LOW level for 5 V slave receivers. |
Use Scenario: Retrofitting modern microcontrollers into aging industrial controllers originally designed for 74LS logic families. IC Role / Device Role / Timing Role: Replaces obsolete 74LS14 inverters while providing enhanced noise immunity and wider supply tolerance. Use Value: Pin-compatible SO20 footprint enables drop-in replacement; Schmitt hysteresis restores marginal timing margins degraded by PCB trace aging and temperature drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 9-bit Schmitt inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVTH162244DGGR | 16-bit non-inverting buffer; LVCMOS input thresholds; 3-state outputs instead of open-drain | Requires external inverters for inversion; unsuitable for wired-AND bus configurations | Select only if system requires bidirectional 3-state control and no hysteresis is needed |
| 74HC14D,653 | 6-channel inverting Schmitt trigger; standard CMOS thresholds (not TTL-compatible); no open-drain outputs | Limited to 6 channels; cannot interface directly to TTL sources without level shifters | Choose only for space-constrained designs needing fewer channels and no bus sharing |
Compared with SN74LVTH162244DGGR and 74HC14D,653, the 74HCT9114D,118 uniquely combines 9-channel count, TTL-compatible Schmitt inputs, and open-drain outputs - making it the sole option for noise-prone, multi-signal, wired-AND–based industrial interfaces requiring direct TTL interoperability.
Availability
74HCT9114D,118 is available at Aetrix Electronics and suitable for industrial sensor interface modules, motor control feedback conditioning, I²C voltage translation, and legacy system logic upgrades requiring stable component supply across extended temperature ranges.
Supply support for 74HCT9114D,118 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 logic, discrete, and MOSFET solutions optimized for reliability and manufacturability.
The 74HCT9114D,118 belongs to Nexperia's 74HCT logic family - engineered specifically for seamless integration between TTL and CMOS systems in harsh industrial and automotive-adjacent environments.
FAQ
Can 74HCT9114D,118 be used with a 3.3 V supply?
No. The 74HCT9114D,118 is specified only for VCC = 4.5 V to 5.5 V per its recommended operating conditions. At 3.3 V, input thresholds fall outside TTL compatibility range and propagation delay increases beyond guaranteed limits. For 3.3 V systems, consider the 74LVC14A or similar LVC-family Schmitt inverters.
What is the maximum capacitive load each Yn output can drive?
Each open-drain output is characterized up to CL = 50 pF in dynamic testing, with tpd and tTHL specified under that condition. Driving >50 pF may increase propagation delay and transition time nonlinearly; for loads >100 pF, add a series resistor to damp ringing and verify timing margins in final layout.
Do the input clamp diodes require external current-limiting resistors?
Yes - when interfacing to voltages exceeding VCC or falling below GND, external series resistors must limit IIK to ≤ ±20 mA per pin, as specified in absolute maximum ratings. Typical values range from 1 kΩ to 10 kΩ depending on overvoltage magnitude and duty cycle.
Is 74HCT9114D,118 automotive-qualified?
No. Although rated for −40 °C to +125 °C, this part is not AEC-Q100 qualified and lacks automotive-specific reliability testing, traceability, or change notification protocols. For automotive applications, use Nexperia's automotive-grade equivalents such as the 74HCT9114DP,118 (if available) or consult official Nexperia automotive product listings.
74HCT9114D,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Inverter
- Number of Circuits:
- 9
- Number of Inputs:
- 1
- Features:
- Schmitt Trigger, Open Drain
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Max):
- 8 µA
- Current - Output High, Low:
- -, 4mA
- Input Logic Level - Low:
- 0.7V ~ 0.8V
- Input Logic Level - High:
- 2V
- Max Propagation Delay @ V, Max CL:
- 17ns @ 5V, 50pF
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SO
74HCT9114D,118 FAQ
1.How can I place an order for 74HCT9114D,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT9114D,118 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 74HCT9114D,118 reliable?
The price and inventory of 74HCT9114D,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT9114D,118 is usually 5 days.
3.What payment methods are accepted for 74HCT9114D,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT9114D,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT9114D,118?
74HCT9114D,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT9114D,118 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 74HCT9114D,118?
For technical support, including 74HCT9114D,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT9114D,118 requirements.
6.How does Aetrix verify that 74HCT9114D,118 is sourced from the original manufacturer or authorized distributors?
All 74HCT9114D,118 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 74HCT9114D,118 meets industry standards.
7.What is the process for return or replacement of 74HCT9114D,118?
All 74HCT9114D,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT9114D,118, 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 74HCT9114D,118 part is unused and in its original packaging.
Return procedure for 74HCT9114D,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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