My Inquiry
My Account
onsemi 74VHC32MX
- Part No.:
- 74VHC32MX
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74VHC32MX.pdf
- Description:
- IC GATE OR 4CH 2-INP 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,820
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74VHC32MX from ON Semiconductor is a quad 2-input OR gate in advanced high-speed CMOS technology, delivering 3.8 ns typical propagation delay at 5 V, 2 µA max quiescent current at 25°C, and operation across 2.0–5.5 V supply range. It serves as a logic-level combiner in digital control subsystems of industrial PLCs, sensor interface modules, and power management sequencers.
For engineers reviewing the 74VHC32MX datasheet, pinout, applications, or equivalent options, key selection criteria include input voltage tolerance (–0.5 V to +7.0 V), noise immunity (28% VCC min), output drive capability (±8 mA), and compatibility with 3.3 V/5 V mixed-supply systems.
Technical Context
The 74VHC32MX implements four independent OR logic functions using silicon-gate CMOS process, with buffered outputs ensuring stable switching and high noise rejection. Its input protection circuit allows safe application of 0–7 V signals regardless of VCC, enabling robust level-shifting between 3.3 V and 5 V domains.
All inputs feature power-down protection and are specified for VIH ≥ 0.7×VCC and VIL ≤ 0.3×VCC over full temperature range (–40°C to +85°C). Propagation delays are characterized at CL = 15 pF and CL = 50 pF, supporting both low-capacitance and moderate-load timing paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Four independent 2-input OR gates - enables parallel Boolean OR operations without inter-gate coupling |
| tPD (typ.) | 3.8 ns at VCC = 5 V, CL = 15 pF - supports >100 MHz toggle rates in clean signal environments |
| VCC Range | 2.0 V to 5.5 V - allows direct integration into battery-backed or dual-rail systems |
| Input Voltage Range | –0.5 V to +7.0 V - permits overvoltage-tolerant interfacing with legacy TTL or open-drain sources |
| IOL / IOH | ±8 mA at VCC = 4.5 V - drives standard 74-series fan-out loads (up to 10 LS-TTL units) |
| ICC (max) | 20 µA at TA = –40°C to +85°C - ensures ultra-low static power in always-on monitoring circuits |
| VIH / VIL | 0.7×VCC / 0.3×VCC - provides rail-proportional threshold stability across supply variation |
Pinout & Package
74VHC32MX is supplied in a 14-lead TSSOP package (JEDEC MO-153, 4.4 mm wide), optimized for high-density PCB layouts and automated assembly. Pin numbering follows standard 14-pin DIP/SOIC/TSSOP orientation with Pin 1 marked by notch or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 8, 9, 11, 12 | Input (A1/B1/A2/B2/A3/B3/A4/B4) | Eight logic inputs grouped as four OR pairs - each pair feeds one gate; all support overvoltage-tolerant biasing |
| 3, 6, 10, 13 | Output (Y1/Y2/Y3/Y4) | Four push-pull CMOS outputs - capable of sourcing/sinking 8 mA while maintaining VOL ≤ 0.44 V and VOH ≥ 3.80 V |
| 7 | GND | Ground reference for all logic and I/O - must be low-impedance connection to minimize ground bounce |
| 14 | VCC | Positive supply rail - decoupling capacitor (0.1 µF) required within 5 mm for stable high-speed operation |
Key Features
| Feature | Design Value |
|---|---|
| High-speed CMOS architecture | 3.8 ns tPD at 5 V enables use in sub-10 ns timing-critical paths without added buffers |
| Input overvoltage tolerance | Supports 0–7 V input signals independent of VCC - eliminates external clamping diodes in mixed-voltage interfaces |
| Power-down input protection | Prevents latch-up when VCC = 0 V but inputs remain active - critical for hot-swap or partial-power-down systems |
| Low dynamic noise (VOLP ≤ 0.8 V) | Reduces crosstalk in dense logic arrays - measured at CL = 50 pF, confirming clean edge integrity |
| PIN- and FUNCTION-compatible with 74HC32 | Direct drop-in replacement for legacy HC-family designs - no layout or firmware changes required |
Applications
| Industrial Control Logic | Sensor Signal Conditioning |
|---|---|
Use Scenario: Combining fault flags from multiple motor drivers in a CNC motion controller. IC Role / Device Role / Timing Role: OR gate aggregating four independent hardware fault signals into a single system-alert line. Use Value: Enables real-time fault detection with <3.8 ns latency per stage and immunity to supply droop during transient overload events. | Use Scenario: Merging proximity switch outputs in an automated packaging line. IC Role / Device Role / Timing Role: Level-shifting and logic OR of 3.3 V and 5 V sensor outputs before feeding to a microcontroller GPIO. Use Value: Eliminates external level translators via ±0.5 V to +7.0 V input tolerance, reducing BOM count and board area. |
| Power Sequencing Supervisor | Legacy System Interface Adapter |
Use Scenario: Validating readiness of three DC-DC rails before enabling FPGA configuration. IC Role / Device Role / Timing Role: Active-HIGH OR function generating "All Rails OK" signal from individual PGOOD lines. Use Value: Achieves <10 µA total quiescent current across four gates - preserves battery life in always-on supervisory circuits. | Use Scenario: Adapting 74LS-based test equipment to modern 3.3 V logic controllers. IC Role / Device Role / Timing Role: Translating and buffering LS-TTL outputs to meet CMOS input thresholds in hybrid backplanes. Use Value: Maintains 28% VCC noise margin and supports 5 V tolerant inputs - avoids redesign of aging instrumentation hardware. |
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 |
|---|---|---|---|
| 74HC32D | Slower tPD (15 ns typ. at 6 V), higher ICC (4 µA max), narrower VCC range (2–6 V) | Limited to lower-speed control logic; less suitable for 3.3 V-only or mixed-rail systems | Select when cost sensitivity outweighs speed/power needs and 5 V operation dominates |
| SN74LVC32APWR | 3.3 V only (1.65–3.6 V), faster tPD (3.5 ns typ.), lower VOL (0.36 V), no 5 V input tolerance | Requires external level shifters for 5 V signal sources; unsuitable for battery-backup or dual-supply use | Choose for high-density 3.3 V systems where lowest propagation delay and smallest footprint are critical |
Compared with 74HC32D and SN74LVC32APWR, the 74VHC32MX uniquely balances 5 V tolerance, 3.3 V compatibility, sub-4 ns speed, and µA-level quiescent current - making it optimal for upgrade paths from HC logic and mixed-voltage industrial interfaces.
Availability
74VHC32MX is available at Aetrix Electronics and suitable for industrial control logic, sensor signal conditioning, power sequencing supervision, and legacy system interface adaptation requiring stable component supply and long-term manufacturability.
Supply support for 74VHC32MX 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 discrete devices for automotive, industrial, cloud computing, and IoT applications.
The 74VHC32MX belongs to ON Semiconductor's legacy logic portfolio inherited from Fairchild, engineered for high-speed, low-power, mixed-voltage interoperability in industrial and embedded control systems.
FAQ
What is the maximum input voltage rating for the 74VHC32MX?
The 74VHC32MX supports DC input voltages from –0.5 V to +7.0 V, independent of VCC level. This overvoltage tolerance allows safe interfacing with 5 V TTL, open-drain sensors, or partially powered subsystems without external clamping components - a key advantage over standard HC or LVC families.
Does the 74VHC32MX require pull-up or pull-down resistors on unused inputs?
Yes - per the datasheet, all unused inputs on the 74VHC32MX must be externally tied HIGH or LOW; floating inputs are prohibited. This prevents increased ICC, erratic output behavior, and potential device damage due to undefined internal node states during operation or power transitions.
Is the 74VHC32MX pin-compatible with the 74HC32?
Yes, the 74VHC32MX is pin- and function-compatible with the 74HC32. Both share identical 14-pin TSSOP pinout, truth table, and logic behavior. The 74VHC32MX improves upon the HC version with faster propagation delay (3.8 ns vs. 15 ns), lower ICC (2 µA vs. 4 µA), and extended input voltage range (–0.5 V to +7.0 V).
What is the recommended decoupling for the 74VHC32MX in high-speed operation?
A 0.1 µF ceramic capacitor placed within 5 mm of Pin 14 (VCC) and Pin 7 (GND) is required for stable 74VHC32MX operation above 10 MHz. For systems with multiple 74VHC32MX devices, add a bulk 4.7 µF tantalum or aluminum electrolytic capacitor per power rail segment to suppress low-frequency supply ripple.
Can the 74VHC32MX operate reliably at 3.3 V supply voltage?
Yes - the 74VHC32MX is fully specified for VCC = 3.3 V ± 0.3 V, with guaranteed tPHL/tPLH ≤ 7.9 ns (CL = 15 pF), VIH ≥ 2.31 V, and VIL ≤ 0.99 V. Its rail-proportional input thresholds and low dynamic noise ensure robust performance in 3.3 V systems, including those coexisting with 5 V peripherals.
74VHC32MX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74VHC
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- OR Gate
- Number of Circuits:
- 4
- Number of Inputs:
- 2
- Features:
- -
- Voltage - Supply:
- 2V ~ 5.5V
- Current - Quiescent (Max):
- 2 µA
- Current - Output High, Low:
- 8mA, 8mA
- Input Logic Level - Low:
- 0.5V
- Input Logic Level - High:
- 1.5V
- Max Propagation Delay @ V, Max CL:
- 7.5ns @ 5V, 50pF
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
74VHC32MX FAQ
1.How can I place an order for 74VHC32MX through Aetrix?
Please submit a Request for Quotation (RFQ) for 74VHC32MX 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 74VHC32MX reliable?
The price and inventory of 74VHC32MX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VHC32MX is usually 5 days.
3.What payment methods are accepted for 74VHC32MX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VHC32MX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74VHC32MX?
74VHC32MX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74VHC32MX 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 74VHC32MX?
For technical support, including 74VHC32MX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VHC32MX requirements.
6.How does Aetrix verify that 74VHC32MX is sourced from the original manufacturer or authorized distributors?
All 74VHC32MX 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 74VHC32MX meets industry standards.
7.What is the process for return or replacement of 74VHC32MX?
All 74VHC32MX units undergo pre-shipment inspection (PSI). If there is an issue with 74VHC32MX, 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 74VHC32MX part is unused and in its original packaging.
Return procedure for 74VHC32MX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74VHC32MX Tags
-
SN74LVC1G14DBVR
Texas Instruments
-
SN74LVC1G14DCKR
Texas Instruments
-
SN74AHC1G14DBVR
Texas Instruments
-
SN74LVC1G08DBVR
Texas Instruments
-
SN74LVC1G08DCKR
Texas Instruments
-
SN74LVC1G32DCKR
Texas Instruments
-
SN74LVC1G04DBVR
Texas Instruments
.jpg)
-
74LVC1G08GW,125
Nexperia USA Inc.
-
SN74LVC1G04DCKR
Texas Instruments
-
SN74AHC1G08DBVR
Texas Instruments
-
SN74LVC1G32DBVR
Texas Instruments
-
SN74AHCT1G08DBVR
Texas Instruments
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
