My Inquiry
My Account
onsemi MC74VHC32DT
- Part No.:
- MC74VHC32DT
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MC74VHC32DT.pdf
- Description:
- IC GATE OR 4CH 2-INP 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,536
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MC74VHC32DT from onsemi is a high-speed CMOS quad 2-input OR gate in TSSOP-14 package, operating from 2.0 V to 5.5 V, with 3.8 ns typical propagation delay at 5.0 V and full 5.0 V CMOS-level output swing. It features TTL-compatible input thresholds when used as a 3.3 V-to-5.0 V level shifter in industrial control logic interfaces.
For engineers reviewing the MC74VHC32DT datasheet, pinout, applications, or equivalent options, key selection criteria include its automotive-grade −Q qualification, 5.5 V tolerant inputs, low-noise dynamic output behavior (VOLP ≤ 0.8 V), and compatibility with mixed-voltage system interfacing where rail translation and noise immunity are critical.
Technical Context
The MC74VHC32DT implements four independent OR gates (Y = A + B) using silicon-gate CMOS technology, achieving bipolar-Schottky TTL speed while retaining CMOS power efficiency. Its three-stage internal architecture includes a buffered output stage for enhanced noise immunity and stable drive capability.
Input structures tolerate up to 5.5 V regardless of VCC, enabling safe interfacing between 3 V and 5 V domains; output stages deliver rail-to-rail CMOS swings and remain protected during power-down (VCC = 0 V), supporting hot-insertion and battery-backup scenarios.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Quad 2-input OR gate (Y = A + B), fully independent channels |
| Propagation Delay | 3.8 ns typical at VCC = 5.0 V, CL = 15 pF - enables >100 MHz toggle rates in clean logic paths |
| Supply Range | 2.0 V to 5.5 V - supports direct operation across 3.3 V and 5.0 V systems without level shifters |
| Input Voltage Tolerance | −0.5 V to +6.5 V - allows safe connection to 5 V buses even when powered from 3.3 V |
| Output Drive | ±8 mA at VCC = 4.5 V - sufficient to drive multiple standard CMOS loads or one TTL input |
| Quiescent Current | 2.0 µA max at TA = 25°C - ensures negligible standby power in battery-sensitive applications |
| ESD Rating | Human Body Model > 2000 V - meets industrial handling requirements without special ESD controls |
Pinout & Package
TSSOP-14 package (Case 948G), 4.4 mm × 5.0 mm body, 0.65 mm pitch, lead-free (Pb-free) compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | A1 | First input of Gate 1 - accepts standard CMOS logic levels (VIH ≥ 70% VCC) |
| 2 | B1 | Second input of Gate 1 - electrically identical to A1; both inputs tolerant to 5.5 V |
| 3 | Y1 | Output of Gate 1 - full-rail CMOS swing (0 V to VCC), capable of sourcing/sinking 8 mA |
| 4 | A2 | First input of Gate 2 - shares same voltage tolerance and threshold characteristics as A1 |
| 5 | B2 | Second input of Gate 2 - no internal connection to other gates; fully isolated signal path |
| 6 | Y2 | Output of Gate 2 - independently buffered; immune to crosstalk from Y1/Y3/Y4 under load |
| 7 | GND | Ground reference for all logic and power domains - must be low-impedance for noise control |
| 8 | Y3 | Output of Gate 3 - identical electrical specs to Y1/Y2; supports parallel fan-out configurations |
| 9 | A3 | First input of Gate 3 - pin-compatible with A1/A2/A4; no shared internal nodes |
| 10 | B3 | Second input of Gate 3 - supports asynchronous OR logic combining across multiple subsystems |
| 11 | Y4 | Output of Gate 4 - final gate output; usable for status aggregation or enable-chain termination |
| 12 | A4 | First input of Gate 4 - matches input capacitance (4 pF typ) and leakage (<±1.0 µA) of other inputs |
| 13 | B4 | Second input of Gate 4 - verified for tr/tf ≤ 20 ns/V at VCC = 4.5–5.5 V |
| 14 | VCC | Positive supply rail - powers all four gates; decoupling capacitor required within 10 mm |
Key Features
| Feature | Design Value |
|---|---|
| High-speed operation | 3.8 ns typical tPD at 5.0 V enables timing-critical combinatorial logic in microcontroller peripheral interfaces |
| 5.5 V input tolerance | Allows direct connection to 5 V buses while operating from 3.3 V supply - eliminates external level translators |
| Power-down input protection | Inputs remain functional and non-damaging even when VCC = 0 V - essential for hot-swap and backup-power systems |
| High noise immunity | VNIH = VNIL = 28% VCC ensures robust operation in electrically noisy industrial environments (e.g., motor drives) |
| AEC-Q100 qualified | −Q suffix indicates automotive-grade qualification including PPAP support and controlled change management |
Applications
| Industrial PLC I/O Expansion | Automotive Body Control Module |
|---|---|
|
Use Scenario: Aggregating multiple sensor fault signals into a single OR-ed alert line feeding a microcontroller interrupt pin. IC Role / Device Role / Timing Role: Combinatorial logic gate performing real-time logical OR of up to four independent digital inputs. Use Value: Eliminates need for firmware polling; delivers sub-4 ns response from any input assertion to output assertion at 5 V supply. |
Use Scenario: Merging door-open, trunk-open, and hood-open switch signals to trigger interior lighting activation. IC Role / Device Role / Timing Role: Level-translating OR combiner interfacing 12 V-switched inputs (via pull-up) to 3.3 V MCU GPIO. Use Value: Input tolerance to 5.5 V permits direct use with 5 V bias networks; AEC-Q100 qualification ensures reliability over vehicle lifetime. |
| Medical Equipment Power Sequencing | Test & Measurement Signal Gating |
|
Use Scenario: Enabling safety interlock logic that asserts a master enable only when all subsystems report ready status. IC Role / Device Role / Timing Role: Deterministic combinatorial gate ensuring synchronized power-up sequencing across isolated voltage rails. Use Value: Guaranteed propagation delay < 8.5 ns over −55°C to +125°C ensures timing predictability in life-critical startup sequences. |
Use Scenario: Gating high-frequency clock or data signals during instrument calibration cycles using control-line OR logic. IC Role / Device Role / Timing Role: Low-skew, low-jitter OR gate preserving signal integrity in analog/digital test paths. Use Value: VOLP ≤ 0.8 V and balanced tPLH/tPHL minimize dynamic ground bounce and maintain signal fidelity at 50 MHz toggle rates. |
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 |
|---|---|---|---|
| MC74VHC32DR2G | SOIC-14 package (Case 751A), 8.75 mm × 3.9 mm body, 1.27 mm pitch - larger footprint, higher thermal resistance (116 °C/W) | Suitable for through-hole prototyping or legacy PCBs not supporting TSSOP; less suitable for space-constrained automotive modules | Select MC74VHC32DR2G only when board layout requires SOIC or thermal mass exceeds TSSOP limits. |
| SN74LVC32APWR | TI part with 1.65–5.5 V range, 3.9 ns tPD at 3.3 V, but input tolerance limited to VCC + 0.3 V - no 5.5 V absolute max rating | Not safe for 5 V bus interfacing without external clamping; lacks AEC-Q100 qualification and power-off protection | Choose SN74LVC32APWR only in pure 3.3 V systems where cost is prioritized over robustness and automotive compliance. |
Compared with MC74VHC32DR2G, the MC74VHC32DT offers 40% smaller PCB area and better high-frequency noise rejection due to tighter lead inductance; versus SN74LVC32APWR, it provides guaranteed 5.5 V input survivability and automotive qualification - critical for field-reliable designs.
Availability
MC74VHC32DT is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and medical device manufacturing requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant parts.
Supply support for MC74VHC32DT 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient electronics for automotive, industrial, cloud, and medical applications.
The MC74VHC32DT belongs to the VHC logic family - designed for high-speed, low-power, mixed-voltage system interfacing with emphasis on robustness, noise immunity, and automotive qualification.
FAQ
What is the maximum supply voltage for MC74VHC32DT?
The MC74VHC32DT supports a DC supply voltage range of 2.0 V to 5.5 V. Its absolute maximum rating is +6.5 V on VCC, but operation above 5.5 V is not recommended or characterized. All DC electrical specifications, including propagation delay and output drive, are guaranteed only within the 2.0–5.5 V range per the datasheet's Recommended Operating Conditions table.
Is MC74VHC32DT compatible with 5 V TTL inputs?
No - the MC74VHC32DT has standard CMOS input thresholds (VIH ≥ 70% VCC, VIL ≤ 30% VCC) and is not TTL-input-compatible. For TTL-level input compatibility, use the pin-compatible MC74VHCT32A variant instead. The MC74VHC32DT can interface *to* 5 V TTL outputs via its 5.5 V-tolerant inputs, but cannot directly accept 0.8 V/2.0 V TTL logic levels as inputs without external conditioning.
Does MC74VHC32DT support hot insertion?
Yes - the MC74VHC32DT includes power-down protection on all inputs, allowing them to tolerate voltages up to 5.5 V even when VCC = 0 V. This feature prevents latch-up or damage during hot insertion into live backplanes or systems with uncontrolled power sequencing, making it suitable for modular industrial and telecom equipment.
What is the meaning of the "−Q" suffix in MC74VHC32DTR2G−Q*?
The "−Q" suffix denotes an automotive-grade version meeting AEC-Q100 stress testing requirements and supporting PPAP (Production Part Approval Process). It includes controlled site and change management - meaning all wafer fabrication, assembly, and test occur at qualified facilities with documented process controls, traceability, and failure analysis capability required for automotive Tier 1 suppliers.
Can MC74VHC32DT drive a 50 pF capacitive load at 5 MHz?
Yes - the MC74VHC32DT is characterized for CL = 50 pF loads, with propagation delay specified at 5.5 ns (typ) at VCC = 5.0 V. At 5 MHz (200 ns period), the gate's 3.8–8.5 ns delay introduces negligible timing skew. Its ±8 mA output drive comfortably handles the dynamic current (I = CL × dV/dt ≈ 2 mA peak) required for clean 5 V transitions at that frequency.
MC74VHC32DT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74VHC
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- 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 ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
MC74VHC32DT FAQ
1.How can I place an order for MC74VHC32DT through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74VHC32DT 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 MC74VHC32DT reliable?
The price and inventory of MC74VHC32DT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74VHC32DT is usually 5 days.
3.What payment methods are accepted for MC74VHC32DT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74VHC32DT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74VHC32DT?
MC74VHC32DT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74VHC32DT 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 MC74VHC32DT?
For technical support, including MC74VHC32DT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74VHC32DT requirements.
6.How does Aetrix verify that MC74VHC32DT is sourced from the original manufacturer or authorized distributors?
All MC74VHC32DT 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 MC74VHC32DT meets industry standards.
7.What is the process for return or replacement of MC74VHC32DT?
All MC74VHC32DT units undergo pre-shipment inspection (PSI). If there is an issue with MC74VHC32DT, 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 MC74VHC32DT part is unused and in its original packaging.
Return procedure for MC74VHC32DT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC74VHC32DT 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…
