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onsemi MC74LVX32D
- Part No.:
- MC74LVX32D
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- -
- Datasheet:
-
MC74LVX32D.pdf
- Description:
- IC GATE OR
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Product details
Overview
MC74LVX32D from ON Semiconductor is a quad 2-input OR gate IC designed for level-translating logic interfacing between 3V and 5V systems. It features 5V-tolerant inputs (up to 7V), 4.4ns typical propagation delay at VCC = 3.3V, 2µA max quiescent current at 25°C, ±25mA output drive capability, and SOIC-14 package. It serves as a voltage-compatible logic combiner in mixed-supply digital control paths.
For engineers reviewing the MC74LVX32D datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, validated pin functions, real-world interface use cases, and two confirmed alternative parts with documented functional and application-level distinctions.
Technical Context
The MC74LVX32D implements four independent CMOS OR gates in a single monolithic die, each with rail-to-rail input tolerance (–0.5V to +7.0V) and output swing limited to VCC/GND. Its internal structure supports simultaneous switching across all gates without latch-up under 300mA stress, and its balanced tPLH/tPHL delays ensure deterministic timing in synchronous logic trees.
No internal pull-ups or level-shifting circuitry is integrated - translation relies solely on input voltage tolerance and output compliance with VCC-referenced logic thresholds. The device operates within 2.0V–3.6V supply range and meets HBM ESD >2000V and machine model >200V requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.0V to 3.6V - defines valid operating supply; not 5V-tolerant for VCC itself |
| tPD (Typ) | 4.4ns at VCC = 3.3V, CL = 15pF - enables sub-200MHz combinational logic operation |
| Input Voltage Range | –0.5V to +7.0V - allows direct connection to 5V signals without external resistors or translators |
| IOUT (Max) | ±25mA per output - supports driving multiple 74LVC inputs or small LED loads |
| ICC (Max) | 2µA at TA = 25°C - enables ultra-low static power in battery-backed or always-on logic sections |
| VOL (Max) | 0.44V at IOL = 4mA, VCC = 3.0V - ensures robust LOW-level noise margin in 3.3V CMOS systems |
| VIH/VIL | VIH = 2.4V min, VIL = 0.8V max at VCC = 3.6V - compatible with standard 3.3V LVTTL thresholds |
Pinout & Package
MC74LVX32D is housed in a 14-lead SOIC package (Case 751A), 3.9mm wide, with standard 1.27mm pitch. Pin 1 is marked by a beveled corner or dot; pin numbering follows counter-clockwise sequence from top-left when viewed from component side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | A0 (Input) | First input of Gate 0 - accepts 0–7V signals regardless of VCC |
| 2 | B0 (Input) | Second input of Gate 0 - electrically identical to Pin 1 |
| 3 | O0 (Output) | OR result of A0+B0 - swings 0V to VCC, not to 5V |
| 4 | A1 (Input) | First input of Gate 1 - fully independent, no crosstalk with Gate 0 |
| 5 | B1 (Input) | Second input of Gate 1 - shares same voltage tolerance and timing specs |
| 6 | O1 (Output) | OR result of A1+B1 - matches O0 in drive strength and VOL/VOH |
| 7 | GND | Ground reference for all inputs, outputs, and internal circuitry |
| 8 | O3 (Output) | OR result of A3+B3 - fourth independent output, aligned with SOIC pinout symmetry |
| 9 | B3 (Input) | Second input of Gate 3 - located adjacent to O3 for minimal trace length |
| 10 | A3 (Input) | First input of Gate 3 - completes Gate 3 pair on right-side pins |
| 11 | O2 (Output) | OR result of A2+B2 - third output, placed near center for routing flexibility |
| 12 | B2 (Input) | Second input of Gate 2 - paired with A2 (Pin 13) and O2 (Pin 11) |
| 13 | A2 (Input) | First input of Gate 2 - forms final gate pair with B2 and O2 |
| 14 | VCC | Positive supply rail - must be 2.0–3.6V; powers all four gates simultaneously |
Key Features
| Feature | Design Value |
|---|---|
| 5V-tolerant inputs | Enables direct interface between legacy 5V peripherals and modern 3.3V controllers without external components |
| Low dynamic noise (VOLP ≤ 0.5V) | Reduces switching-induced ground bounce in dense PCB layouts with shared return paths |
| Power-down input protection | Prevents back-driving or leakage when VCC is off but input signals remain active |
| Latch-up immunity >300mA | Guarantees robustness against transient overvoltage or ESD events in industrial environments |
| PIN- and FUNCTION-compatible | Direct drop-in replacement for 74LVX02, 74LVC32, and other 14-pin quad OR families without layout change |
Applications
| Industrial PLC I/O Expansion | USB-C Power Delivery Logic |
|---|---|
|
Use Scenario: Adding discrete OR logic to merge multiple fault signals (e.g., thermal shutdown, overcurrent, communication timeout) into a single system-alert line in programmable logic controllers. IC Role / Device Role / Timing Role: Combinatorial signal aggregation node - performs real-time Boolean OR with <4.4ns latency, no clock required. Use Value: Eliminates need for microcontroller GPIO polling or external translator ICs while maintaining 5V sensor compatibility and 3.3V MCU interface. |
Use Scenario: Implementing policy engine logic in USB-C PD controllers to OR multiple source-capability flags before enabling VBUS negotiation. IC Role / Device Role / Timing Role: Level-translating decision gate - accepts 5V vendor-defined status bits and outputs 3.3V-compatible enable signals to PD PHY. Use Value: Reduces bill-of-materials by replacing dual-supply translators and avoids timing skew introduced by multi-stage level shifters. |
| Automotive Body Control Module | Medical Sensor Hub Interface |
|
Use Scenario: Consolidating door-open, trunk-open, and hood-open switch inputs into a single wake-up request line for low-power body controller ASICs. IC Role / Device Role / Timing Role: Input conditioning and signal fusion element - handles mechanical switch bounce via inherent propagation delay and voltage-tolerant sensing. Use Value: Supports direct connection to 5V pull-up switches without voltage dividers, reducing component count and improving EMC resilience. |
Use Scenario: Combining alarm triggers from multiple isolated analog sensor front-ends (ECG, SpO₂, temperature) into a unified interrupt for ARM Cortex-M4 host processor. IC Role / Device Role / Timing Role: Fault-orchestrator logic block - provides deterministic, zero-software-latency response to any critical sensor event. Use Value: Ensures sub-10ns worst-case alert propagation while maintaining 3.3V logic compatibility and <2µA standby current for battery longevity. |
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 |
|---|---|---|---|
| SN74LVC32APWR | Wider VCC range (1.65–3.6V); lower VIH (2.0V min at VCC=3.3V); no 7V input tolerance | Requires external clamping for 5V inputs; better suited for pure 3.3V-only systems with tighter VIH margins | Select when full 5V input tolerance is unnecessary and lowest possible ICC (<1µA) is prioritized |
| 74AUP1G32GW,125 | Single-gate variant; 0.8–3.6V VCC; 3.7ns tPD; only one OR function per package | Requires four devices to match MC74LVX32D's quad functionality; higher board area and assembly cost | Select when design requires independent supply domains per gate or ultra-low dynamic power (CPD = 4.5pF) |
Compared with SN74LVC32APWR and 74AUP1G32GW,125, the MC74LVX32D uniquely balances 7V input tolerance, quad integration, and sub-5ns speed in a single SOIC-14 package - making it optimal for mixed-voltage industrial and automotive signal aggregation where pin count and interface robustness are critical.
Availability
MC74LVX32D is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, USB-C power delivery logic, automotive body control modules, and medical sensor hub interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MC74LVX32D 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
ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power management, analog, logic, and sensor solutions for automotive, industrial, and cloud infrastructure markets.
The MC74LVX32D belongs to the LVX low-voltage logic family, engineered for seamless voltage-domain bridging in mixed-supply digital systems - particularly targeting 3V microcontrollers interfacing with legacy 5V peripherals.
FAQ
What is the maximum input voltage the MC74LVX32D can tolerate?
The MC74LVX32D supports DC input voltages from –0.5V to +7.0V, independent of VCC. This allows direct connection to 5V logic signals even when powered from 3.3V, eliminating external level-shifting components. The specification is absolute-rated and tested per JEDEC standards - exceeding 7.0V risks permanent damage to the input protection diodes.
Can the MC74LVX32D operate with a 5V supply voltage?
No, the MC74LVX32D is not rated for 5V VCC operation. Its recommended VCC range is strictly 2.0V to 3.6V. Applying 5V to VCC violates absolute maximum ratings and may cause excessive ICC, thermal runaway, or latch-up. Input pins tolerate up to 7V, but the internal core requires ≤3.6V supply.
Does the MC74LVX32D require external pull-up or pull-down resistors on unused inputs?
No - unused inputs on the MC74LVX32D may be left floating only if VCC is actively supplied and ambient noise is negligible. However, best practice is to tie unused inputs to VCC or GND to prevent oscillation, increased ICC, or unintended logic transitions. The device does not integrate internal terminations.
How does the MC74LVX32D handle simultaneous switching of multiple outputs?
The MC74LVX32D exhibits balanced propagation delays (tPLH ≈ tPHL) and low output-to-output skew (≤1.5ns), minimizing timing uncertainty when multiple gates switch concurrently. Its low-noise design (VOLP ≤ 0.5V) suppresses ground bounce during simultaneous transitions, preserving signal integrity in high-density layouts.
Is the MC74LVX32D pin-compatible with standard 74-series OR gates?
Yes - the MC74LVX32D uses the industry-standard 14-pin SOIC pinout for quad 2-input OR gates (e.g., 74LS32, 74HC32, 74LVC32). Pin assignments for inputs (A0–A3, B0–B3), outputs (O0–O3), VCC, and GND match exactly, enabling direct PCB replacement without layout modification.
MC74LVX32D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- 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:
- -
MC74LVX32D FAQ
1.How can I place an order for MC74LVX32D through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74LVX32D 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 MC74LVX32D reliable?
The price and inventory of MC74LVX32D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74LVX32D is usually 5 days.
3.What payment methods are accepted for MC74LVX32D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74LVX32D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74LVX32D?
MC74LVX32D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74LVX32D 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 MC74LVX32D?
For technical support, including MC74LVX32D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74LVX32D requirements.
6.How does Aetrix verify that MC74LVX32D is sourced from the original manufacturer or authorized distributors?
All MC74LVX32D 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 MC74LVX32D meets industry standards.
7.What is the process for return or replacement of MC74LVX32D?
All MC74LVX32D units undergo pre-shipment inspection (PSI). If there is an issue with MC74LVX32D, 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 MC74LVX32D part is unused and in its original packaging.
Return procedure for MC74LVX32D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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