onsemi 74VHC08N
- Part No.:
- 74VHC08N
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
74VHC08N.pdf
- Description:
- IC GATE AND 4CH 2-INP 14MDIP
- Quantity:
- Payment:

- Shipping:

Inventory:3,154
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Product details
Overview
74VHC08N from onsemi is a quad 2-input AND gate IC in SOIC-14 package, operating from 2.0 V to 5.5 V supply, delivering 4.3 ns typical propagation delay at 5.0 V and supporting 5 V/3 V mixed-voltage system interfacing with input tolerance up to 5.5 V independent of VCC.
For engineers reviewing the 74VHC08N datasheet, pinout, applications, or equivalent options, key selection considerations include its CMOS-compatible speed/power trade-off, input overvoltage protection for battery-backup systems, noise immunity (28% VCC), and compatibility with 74HC08 logic families.
Technical Context
The 74VHC08N implements four independent AND gates using silicon-gate CMOS technology, each with buffered output stages to ensure high noise immunity and stable switching. Its input protection circuit allows safe application of 0 V–5.5 V signals regardless of supply voltage, enabling robust level translation between 3 V and 5 V domains.
It features power-down protection on all inputs, low dynamic noise (VOLP ≤ 0.8 V), and operates across −40 °C to +85 °C. The device meets Pb-free, halogen-free, and RoHS compliance requirements without performance compromise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 5.5 V - supports dual-supply systems and battery backup without level shifters |
| Propagation Delay (tPD) | 4.3 ns (typ.) at VCC = 5.0 V, CL = 15 pF - enables high-speed digital control in timing-critical logic paths |
| Input Voltage Tolerance | −0.5 V to +6.5 V - permits safe interface with higher-voltage peripherals or floating inputs |
| Noise Immunity | VNIH/VNIL ≥ 28% VCC - ensures reliable operation in electrically noisy industrial environments |
| Output Drive | ±8 mA at VCC = 4.5 V - sufficient to drive multiple CMOS loads or small capacitive traces |
| Quiescent Current (ICC) | 2.0 µA (max.) at VCC = 5.5 V - enables ultra-low-power standby in portable and battery-powered designs |
Pinout & Package
74VHC08N is supplied in a 14-pin SOIC (Small Outline Integrated Circuit) package per case 751A, with standard 1.27 mm pitch and JEDEC-compliant footprint. Pin 1 is marked by a notch or beveled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 8, 9, 12, 13 | An, Bn Inputs | Four independent AND gate inputs (A0/B0 through A3/B3); each pair drives one gate |
| 3, 6, 10, 11 | On Outputs | Four independent AND gate outputs (O0 through O3); rail-to-rail CMOS swing |
| 7 | GND | Ground reference for all logic and power domains; must be connected to system ground plane |
| 14 | VCC | Positive supply rail (2.0–5.5 V); decoupling capacitor required within 10 mm of this pin |
Key Features
| Feature | Design Value |
|---|---|
| High-speed CMOS architecture | 4.3 ns tPD at 5 V - matches TTL speed while retaining CMOS power efficiency |
| Input overvoltage tolerance | 0 V to 5.5 V input range regardless of VCC - eliminates need for external clamping in mixed-voltage interfaces |
| Power-down input protection | Inputs remain protected when VCC = 0 V - prevents latch-up or damage during hot-insertion or partial power-down |
| Pb-free and RoHS compliant | Halogen-free/BFR-free construction - meets global environmental compliance mandates without derating |
| Pin/function compatibility | Fully compatible with 74HC08 - allows drop-in replacement in existing HC-based designs |
Applications
| Industrial Control Logic | Portable Device Power Sequencing |
|---|---|
Use Scenario: Discrete logic in PLC I/O modules requiring noise-immune signal gating before microcontroller input sampling. IC Role / Device Role / Timing Role: Quad AND gate performing enable/disable logic for sensor read cycles and actuator trigger conditions. Use Value: 28% VCC noise margin ensures reliable operation near motor drives and relay coils without added filtering. |
Use Scenario: Battery-backed real-time clock (RTC) enable logic that activates only when both main power and backup battery are present. IC Role / Device Role / Timing Role: Two-input AND gate verifying dual power presence before releasing reset to RTC IC. Use Value: Input tolerance up to 5.5 V allows direct connection to unregulated battery rails without voltage dividers. |
| Automotive Body Controller | Test Equipment Signal Conditioning |
Use Scenario: Door lock/unlock arbitration logic where two independent switch inputs must coincide to activate solenoid driver. IC Role / Device Role / Timing Role: Single AND gate acting as coincidence detector in safety-critical door control path. Use Value: −40 °C to +85 °C operating range and 4.3 ns delay support deterministic response under automotive thermal cycling. |
Use Scenario: Digital pattern generator output gating to isolate test signals during calibration phases. IC Role / Device Role / Timing Role: Quad gate array used to mask or pass stimulus waveforms based on test mode register bits. Use Value: Low 0.8 V dynamic output noise (VOLP) prevents false triggering of downstream comparators or ADC reference monitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 2-input AND gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HC08D | Slower tPD (15 ns typ. at 5 V), higher ICC (20 µA max.), same SOIC-14 pinout | Lower speed margin; less suitable for >10 MHz clocked logic but adequate for static control | Select 74HC08D only if cost sensitivity outweighs speed/power requirements and legacy stock exists |
| SN74LVC08APWR | Wider VCC range (1.65–5.5 V), lower tPD (3.8 ns typ.), 3.3 V optimized, TSSOP-14 only | Not pin-compatible with 74VHC08N SOIC-14; requires PCB redesign but offers better 3.3 V system integration | Choose SN74LVC08APWR for new 3.3 V designs needing lowest propagation delay and smallest footprint |
Compared with 74HC08D and SN74LVC08APWR, the 74VHC08N delivers optimal balance of speed (4.3 ns), wide supply range (2.0–5.5 V), SOIC-14 availability, and proven mixed-voltage interoperability-making it ideal for legacy upgrades and industrial designs where layout reuse and voltage flexibility are critical.
Availability
74VHC08N is available at Aetrix Electronics and suitable for industrial control logic, portable device power sequencing, automotive body controllers, and test equipment signal conditioning requiring stable component supply and long-term manufacturability.
Supply support for 74VHC08N 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 power management, analog, logic, and sensing solutions for automotive, industrial, and cloud infrastructure markets.
The 74VHC08N belongs to the VHC (Very High Speed CMOS) logic family, designed to deliver TTL-compatible speed with CMOS power efficiency for general-purpose digital logic in space-constrained, thermally demanding, and mixed-voltage applications.
FAQ
What is the maximum input voltage rating for the 74VHC08N?
The 74VHC08N supports DC input voltages from −0.5 V to +6.5 V, independent of VCC. This allows safe interfacing with 5 V signals even when powered from 3.3 V or 2.5 V supplies-critical for mixed-voltage system design without external level shifters. The internal input protection circuit prevents damage under these conditions.
Is the 74VHC08N pin-compatible with the 74HC08?
Yes, the 74VHC08N is pin- and function-compatible with the 74HC08. Both share identical SOIC-14 pinout, truth table, and logic behavior. However, the 74VHC08N offers faster propagation delay (4.3 ns vs. 15 ns typ. at 5 V) and lower quiescent current (2 µA vs. 20 µA max.), making it a direct performance upgrade in existing HC-based layouts.
What is the operating temperature range of the 74VHC08N?
The 74VHC08N is rated for continuous operation from −40 °C to +85 °C. This extended industrial temperature range ensures reliable functionality in harsh environments such as factory automation controllers, automotive body modules, and outdoor instrumentation-without derating or thermal mitigation.
Does the 74VHC08N require external pull-up or pull-down resistors on unused inputs?
Yes. Per the datasheet's Recommended Operating Conditions, unused inputs on the 74VHC08N must be held HIGH or LOW-never left floating-to prevent increased ICC, oscillation, or undefined output states. A 10 kΩ pull-up to VCC or pull-down to GND is recommended for stability in noise-prone systems.
What package type is used for the 74VHC08N part number specifically?
The 74VHC08N uses the SOIC-14 (Small Outline Integrated Circuit, 14-pin) package per case outline 751A. It is distinct from the TSSOP-14 variants (e.g., 74VHC08MTCX) and features a 3.9 mm body width, 1.27 mm lead pitch, and JEDEC-standard footprint for automated assembly and rework compatibility.
74VHC08N Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74VHC
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- AND 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:
- 7.9ns @ 5V, 50pF
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-MDIP
74VHC08N FAQ
1.How can I place an order for 74VHC08N through Aetrix?
Please submit a Request for Quotation (RFQ) for 74VHC08N 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 74VHC08N reliable?
The price and inventory of 74VHC08N are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VHC08N is usually 5 days.
3.What payment methods are accepted for 74VHC08N?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VHC08N transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74VHC08N?
74VHC08N orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74VHC08N 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 74VHC08N?
For technical support, including 74VHC08N datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VHC08N requirements.
6.How does Aetrix verify that 74VHC08N is sourced from the original manufacturer or authorized distributors?
All 74VHC08N 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 74VHC08N meets industry standards.
7.What is the process for return or replacement of 74VHC08N?
All 74VHC08N units undergo pre-shipment inspection (PSI). If there is an issue with 74VHC08N, 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 74VHC08N part is unused and in its original packaging.
Return procedure for 74VHC08N:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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