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onsemi 74VHC32MTC
- Part No.:
- 74VHC32MTC
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74VHC32MTC.pdf
- Description:
- IC GATE OR 4CH 2-INP 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,386
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Product details
Overview
74VHC32MTC from ON Semiconductor is a quad 2-input OR gate in TSSOP-14 package, operating at 2.0–5.5 V supply, with 3.8 ns typical propagation delay at 5 V, 2 µA max quiescent current at 25°C, and input tolerance up to 7 V - used for logic-level translation and discrete gate logic in industrial control I/O modules.
For engineers reviewing the 74VHC32MTC datasheet, pinout, applications, or equivalent options, key selection criteria include VCC range compatibility, input overvoltage robustness (–0.5 V to +7.0 V), output drive capability (±8 mA), noise immunity (28% VCC min), and TSSOP-14 footprint constraints.
Technical Context
The 74VHC32MTC implements four independent CMOS OR gates using silicon-gate technology, delivering TTL-compatible speed while maintaining CMOS power efficiency. Each gate features buffered output stages and input protection circuitry enabling safe 0–7 V input voltage operation regardless of VCC.
It supports mixed-voltage interfacing (e.g., 5 V logic driving 3 V systems) and battery-backup applications due to its wide supply range (2.0–5.5 V) and power-down input protection. The device is not designed for AC-coupled or high-frequency clock distribution - it is strictly combinatorial logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.0 V to 5.5 V - enables use across 3.3 V and 5 V systems without level shifters |
| tPD (Typ.) | 3.8 ns at VCC = 5 V, CL = 15 pF - meets timing requirements for sub-100 MHz digital control paths |
| ICC (Max) | 2 µA at TA = 25°C - supports ultra-low static power in always-on monitoring circuits |
| Input Voltage Range | –0.5 V to +7.0 V - allows direct connection to unregulated or higher-voltage signals without external clamping |
| Output Drive | ±8 mA at VCC = 4.5 V - sufficient to drive multiple 74-series inputs or small LED loads via series resistor |
| Noise Immunity | VNIH/VNIL ≥ 28% VCC - ensures reliable switching in electrically noisy factory environments |
Pinout & Package
74VHC32MTC is housed in a 14-lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4 mm wide, with 0.65 mm lead pitch and gull-wing leads. Pin 1 marked by notch or dot; body thickness ≤ 1.2 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 8, 9, 11, 12 | Input (A1/B1/A2/B2/A3/B3/A4/B4) | Four independent OR gate inputs; each tolerant to –0.5 V to +7.0 V regardless of VCC |
| 3, 6, 10, 13 | Output (Y1/Y2/Y3/Y4) | CMOS push-pull outputs; capable of sourcing/sinking ±8 mA at VCC = 4.5 V |
| 7 | GND | Ground reference for all logic and power domains; must be low-impedance connection |
| 14 | VCC | Positive supply rail; decoupling capacitor (100 nF ceramic) required within 5 mm of this pin |
Key Features
| Feature | Design Value |
|---|---|
| High-speed OR logic | 3.8 ns typical propagation delay at 5 V enables use in real-time digital state machines |
| Input overvoltage tolerance | Inputs withstand –0.5 V to +7.0 V - eliminates need for external Schottky clamps in mixed-supply interfaces |
| Power-down input protection | All inputs remain protected when VCC = 0 V - prevents backfeeding and latch-up during hot-swap or brownout |
| Low dynamic noise | VOLP ≤ 0.8 V (max) at CL = 50 pF - reduces crosstalk in dense PCB layouts with adjacent signal traces |
| PIN/functional compatibility | Pin- and function-compatible with 74HC32 - allows drop-in replacement in existing HC-based designs |
Applications
| Industrial PLC I/O Expansion | Legacy System Logic Translation |
|---|---|
|
Use Scenario: Adding discrete OR logic to combine multiple sensor fault signals into a single system alert line in programmable logic controller racks. IC Role / Device Role / Timing Role: Combinatorial OR gate aggregating up to four independent digital inputs into one active-HIGH alarm output. Use Value: Eliminates need for microcontroller GPIO polling; provides deterministic <3.8 ns response with no firmware overhead. |
Use Scenario: Interfacing 5 V TTL sensors to 3.3 V microcontrollers in retrofit instrumentation panels where level shifters are cost-prohibitive. IC Role / Device Role / Timing Role: Voltage-tolerant logic buffer performing OR logic while translating 5 V inputs to 3.3 V–compatible outputs. Use Value: Input overvoltage rating (up to 7 V) and 2.0–5.5 V VCC range allow direct connection without external resistors or translators. |
| Battery-Backed Monitoring Circuits | Power Sequencing Supervision |
|
Use Scenario: Monitoring main and backup power rails in medical diagnostic equipment to assert "POWER OK" if either rail is valid. IC Role / Device Role / Timing Role: Dual-rail OR gate detecting presence of VMAIN or VBACKUP and driving a latched enable signal. Use Value: Power-down input protection ensures safe operation during VCC ramp-up/down transients and zero-VCC states. |
Use Scenario: Validating that multiple DC/DC converter outputs (e.g., 1.2 V, 3.3 V, 5 V) are stable before releasing reset to an FPGA. IC Role / Device Role / Timing Role: OR gate combining individual "PGOOD" signals into a composite "ALL POWER GOOD" status flag. Use Value: 2 µA max ICC at 25°C minimizes standby current draw in always-on supervision circuits. |
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,653 (Nexperia) | Same pinout, but VCC max = 6 V; tPD = 7 ns (typ.) at 5 V; input tolerance only to VCC + 0.5 V | Lacks 7 V input overvoltage support - requires external clamping if interfacing to >6 V sources | Select when cost sensitivity outweighs input ruggedness and speed is non-critical |
| SN74LVC32APWR (TI) | 3.3 V optimized (1.65–3.6 V); tPD = 3.8 ns (typ.) at 3.3 V; 5 V-tolerant inputs only (not outputs) | Not suitable for 5 V-only systems; output swing limited to VCC, not 5 V - cannot drive legacy 5 V loads | Prefer for new 3.3 V designs requiring lower VCC and guaranteed 5 V-tolerant inputs |
Compared with 74HC32D and SN74LVC32APWR, the 74VHC32MTC uniquely combines 5 V operation, 7 V input tolerance, sub-4 ns speed, and TSSOP-14 packaging - making it optimal for industrial upgrades where legacy voltage margins and timing headroom are constrained.
Availability
74VHC32MTC is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, battery-backed monitoring circuits, power sequencing supervision, and legacy system logic translation requiring stable component supply and long-term manufacturability.
Supply support for 74VHC32MTC 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 sensing solutions for automotive, industrial, cloud computing, and IoT applications.
The 74VHC32MTC belongs to ON Semiconductor's legacy high-speed CMOS logic family, designed specifically for robust, low-power, mixed-voltage digital interfacing in harsh industrial and infrastructure environments.
FAQ
What is the maximum input voltage rating for the 74VHC32MTC?
The 74VHC32MTC supports DC input voltages from –0.5 V to +7.0 V, independent of VCC level. This allows safe interfacing with unregulated signals, battery-backed lines, or higher-voltage peripherals without external protection components - a key differentiator versus standard HC devices.
Is the 74VHC32MTC pin-compatible with the 74HC32?
Yes, the 74VHC32MTC is pin- and function-compatible with the 74HC32. Both share identical pin assignments (14-pin TSSOP/SOIC/PDIP), truth table behavior, and logic function. This enables direct substitution in existing 74HC32 designs while delivering improved speed and input ruggedness.
Can the 74VHC32MTC operate at 3.3 V supply?
Yes, the 74VHC32MTC is fully specified for operation from 2.0 V to 5.5 V, including 3.3 V. At VCC = 3.3 V, it delivers tPD ≈ 5.5 ns (typ.) with CL = 15 pF and maintains VIH ≥ 2.31 V and VIL ≤ 0.99 V - compatible with standard 3.3 V LVTTL logic thresholds.
Does the 74VHC32MTC require external pull-up or pull-down resistors on unused inputs?
Yes - per the datasheet, all unused inputs of the 74VHC32MTC must be terminated to a defined logic level (VCC or GND). Floating inputs may cause excessive ICC, oscillation, or unpredictable output states due to internal CMOS threshold sensitivity.
What is the thermal performance of the 74VHC32MTC in TSSOP-14 package?
The 74VHC32MTC in TSSOP-14 (MTC14) has a junction-to-ambient thermal resistance (θJA) of 150°C/W. At 25°C ambient and worst-case ICC (20 µA) plus dynamic load, junction temperature rise remains negligible (<0.1°C), making thermal derating unnecessary in standard industrial applications.
74VHC32MTC 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 ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
74VHC32MTC FAQ
1.How can I place an order for 74VHC32MTC through Aetrix?
Please submit a Request for Quotation (RFQ) for 74VHC32MTC 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 74VHC32MTC reliable?
The price and inventory of 74VHC32MTC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VHC32MTC is usually 5 days.
3.What payment methods are accepted for 74VHC32MTC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VHC32MTC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74VHC32MTC?
74VHC32MTC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74VHC32MTC 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 74VHC32MTC?
For technical support, including 74VHC32MTC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VHC32MTC requirements.
6.How does Aetrix verify that 74VHC32MTC is sourced from the original manufacturer or authorized distributors?
All 74VHC32MTC 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 74VHC32MTC meets industry standards.
7.What is the process for return or replacement of 74VHC32MTC?
All 74VHC32MTC units undergo pre-shipment inspection (PSI). If there is an issue with 74VHC32MTC, 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 74VHC32MTC part is unused and in its original packaging.
Return procedure for 74VHC32MTC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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