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NXP Semiconductors 74LVT14DB,112
- Part No.:
- 74LVT14DB,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Gates and Inverters
- Package:
- -
- Datasheet:
-
74LVT14DB,112.pdf
- Description:
- IC INVERTER
- Quantity:
- Payment:
- Shipping:
Inventory:496
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Product details
Overview
74LVT14DB,112 from Nexperia is a 3.3 V hex inverter with Schmitt-trigger inputs, designed for noise-immune signal conditioning in bus interface and level-shifting applications. It features six independent inverting channels, ±20 mA/32 mA output drive, IOFF partial power-down protection, and operates across -40 °C to +85 °C at 2.7–3.6 V supply.
For engineers reviewing the 74LVT14DB,112 datasheet, 74LVT14DB,112 pinout, 74LVT14DB,112 application, or 74LVT14DB,112 equivalent, this device is selected for robust TTL-compatible logic inversion in mixed-voltage systems requiring hysteresis, bus hold, and safe power sequencing.
Technical Context
The 74LVT14DB,112 implements six identical Schmitt-trigger inverter stages using BiCMOS technology, enabling tolerance to slow input transitions and high noise immunity via 0.4–0.6 V hysteresis (VT+ = 1.5–2.0 V, VT− = 0.9–1.3 V at VCC = 3.3 V). Each channel supports 5.5 V-tolerant inputs while powered from 3.3 V.
Its IOFF circuitry actively disables outputs during power-down, blocking backflow current when VCC = 0 V, and bus-hold inputs eliminate external pull-ups on unused pins. Propagation delays are 3.2–5.7 ns (tPHL/tPLH) at VCC = 3.3 V, with static drive capability of −32 mA (sourcing) and +20 mA (sinking).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 3.6 V - ensures compatibility with 3.3 V logic domains and margin against rail droop. |
| Input Threshold Hysteresis | 0.4–0.6 V - enables reliable switching in noisy environments with slow-rising/falling signals. |
| Output Drive | −32 mA / +20 mA - supports direct driving of multiple TTL loads or moderate capacitive buses. |
| IOFF Leakage | ±100 μA at VCC = 0 V - prevents damaging back-current during hot-insertion or partial power-down. |
| Propagation Delay | 3.2–5.7 ns - guarantees sub-6 ns timing performance for high-speed control and clock buffering. |
| Input Voltage Tolerance | Up to 5.5 V - allows safe interfacing with 5 V peripherals without level shifters. |
| Operating Temperature | −40 °C to +85 °C - validated for industrial-grade embedded and communications equipment. |
Pinout & Package
74LVT14DB,112 is packaged in SO14 (SOT108-1), a plastic small outline package with 14 leads and 3.9 mm body width. Pin 1 is index-marked; pin 7 is GND; pin 14 is VCC; inputs (1A–6A) and outputs (1Y–6Y) are arranged in alternating pairs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A, 3A, 5A, 9A, 11A, 13A | Data input (inverting) | Schmitt-trigger inputs with bus-hold; tolerate 5.5 V regardless of VCC state. |
| 2Y, 4Y, 6Y, 8Y, 10Y, 12Y | Data output (inverted) | BiCMOS outputs with ±20 mA/32 mA drive; IOFF-enabled during power-down. |
| 7 | GND | Reference ground for all I/O and supply; required for proper hysteresis and ESD clamp operation. |
| 14 | VCC | Primary 2.7–3.6 V supply; powers internal logic and enables IOFF control when active. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | 0.6 V typical hysteresis enables clean edge regeneration on slow or noisy signals. |
| Bus-hold circuitry | Eliminates need for external pull-up resistors on unused inputs, reducing BOM count and layout area. |
| IOFF partial power-down | Disables outputs and blocks backflow current when VCC = 0 V, supporting hot-swap and mixed-rail systems. |
| 5.5 V-tolerant inputs | Allows direct connection to 5 V logic without external level translation or clamping diodes. |
| TTL-compatible output levels | VOH ≥ 2.0 V and VOL ≤ 0.5 V at full load ensure reliable interfacing with legacy TTL devices. |
Applications
| Industrial Bus Interface | Power Sequencing Control |
|---|---|
|
Use Scenario: Signal conditioning for RS-485 transceiver enable lines and CAN bus termination control in PLC backplanes. IC Role / Device Role / Timing Role: Hex inverter provides noise-immune logic inversion and level shifting between 3.3 V controllers and 5 V bus peripherals. Use Value: Schmitt-trigger inputs reject EMI-induced glitches on long traces; IOFF prevents backfeed during controller reset sequences. |
Use Scenario: Enabling/disabling voltage rails in multi-stage power supplies with staggered startup timing. IC Role / Device Role / Timing Role: Inverter drives MOSFET gate drivers or PMIC enable inputs with precise timing and rail isolation. Use Value: 3.3 V-compatible inputs accept microcontroller GPIO; 5.5 V tolerance accommodates supervisor IC outputs. |
| Legacy System Upgrades | Test Equipment Signal Conditioning |
|
Use Scenario: Retrofitting 3.3 V FPGAs into existing 5 V TTL-based test fixtures and instrumentation racks. IC Role / Device Role / Timing Role: Level translator and signal inverter for address/data bus buffers and handshake line inversion. Use Value: Bus-hold eliminates floating inputs on partially populated buses; ±20 mA drive sustains signal integrity over 10 cm PCB traces. |
Use Scenario: Cleaning up slow-rising clock edges from function generators before distribution to DUT clock inputs. IC Role / Device Role / Timing Role: Edge-shaping inverter with hysteresis restores sharp transitions for jitter-sensitive measurement circuits. Use Value: Sub-6 ns propagation delay preserves timing margins; low input capacitance (3 pF) minimizes loading on source signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex inverter with Schmitt-trigger applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC14APWR | Lower drive (−24/+24 mA); no IOFF; 1.65–5.5 V supply range; same SO14 footprint. | Lacks partial power-down protection; unsuitable for hot-swap or mixed-rail sequencing where backfeed must be blocked. | Select when cost sensitivity outweighs IOFF requirement and system uses only single-supply operation. |
| 74LVTH14PW,118 | Higher drive (−64/+32 mA); includes TTL-compatible output stage; same temperature and voltage specs. | Increased sink current supports heavier bus loading but consumes more quiescent current (ICC up to 3 mA vs. 1.5 mA). | Prefer when driving unterminated transmission lines or multiple TTL inputs simultaneously. |
Compared with SN74LVC14APWR, the 74LVT14DB,112 adds critical IOFF protection for safe power sequencing; versus 74LVTH14PW, it trades peak sink current for lower ICC and tighter hysteresis control-making it optimal for noise-prone industrial interfaces where reliability trumps raw drive strength.
Availability
74LVT14DB,112 is available at Aetrix Electronics and suitable for industrial automation, test equipment, and legacy system upgrades requiring stable component supply, long-term lifecycle support, and guaranteed SO14 packaging consistency.
Supply support for 74LVT14DB,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 delivering high-performance, reliable logic, discrete, and MOSFET solutions optimized for efficiency, miniaturization, and robustness in industrial and consumer applications.
The 74LVT14DB,112 belongs to Nexperia's LVT (Low-Voltage TTL) logic family, engineered for 3.3 V systems needing TTL-level compatibility, noise immunity, and safe power-down behavior in mixed-voltage environments.
FAQ
Does 74LVT14DB,112 support hot-swap operation?
Yes. Its IOFF circuitry disables outputs and limits power-off leakage to ±100 μA when VCC = 0 V, preventing damaging backflow current during live insertion or removal in backplane and modular systems.
Can unused inputs be left floating?
No. While bus-hold circuitry maintains defined logic states on unconnected inputs, best practice is to tie unused inputs to VCC or GND. Floating inputs increase susceptibility to EMI and may cause unintended toggling in high-noise environments.
What is the maximum input transition rate supported?
The device supports input rise/fall rates up to 10 ns/V under enabled-output conditions. This corresponds to minimum edge times of ~15 ns for a 1.5 V swing, ensuring reliable Schmitt-trigger operation without metastability.
Is 74LVT14DB,112 pin-compatible with standard 74HC14?
No. Although both are hex Schmitt-trigger inverters, 74LVT14DB,112 uses SO14 (SOT108-1) with different pin mapping: inputs occupy odd-numbered pins (1,3,5,9,11,13), outputs even-numbered (2,4,6,8,10,12), unlike HC14's interleaved 1A/1Y/2A/2Y pattern.
74LVT14DB,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Circuits:
- -
- Number of Inputs:
- -
- Features:
- -
- Voltage - Supply:
- -
- Current - Quiescent (Max):
- -
- Current - Output High, Low:
- -
- Input Logic Level - Low:
- -
- Input Logic Level - High:
- -
- Max Propagation Delay @ V, Max CL:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
74LVT14DB,112 FAQ
1.How can I place an order for 74LVT14DB,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVT14DB,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 74LVT14DB,112 reliable?
The price and inventory of 74LVT14DB,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVT14DB,112 is usually 5 days.
3.What payment methods are accepted for 74LVT14DB,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVT14DB,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVT14DB,112?
74LVT14DB,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVT14DB,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 74LVT14DB,112?
For technical support, including 74LVT14DB,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVT14DB,112 requirements.
6.How does Aetrix verify that 74LVT14DB,112 is sourced from the original manufacturer or authorized distributors?
All 74LVT14DB,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 74LVT14DB,112 meets industry standards.
7.What is the process for return or replacement of 74LVT14DB,112?
All 74LVT14DB,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVT14DB,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 74LVT14DB,112 part is unused and in its original packaging.
Return procedure for 74LVT14DB,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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