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onsemi 74VHCT00AN
- Part No.:
- 74VHCT00AN
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
74VHCT00AN.pdf
- Description:
- IC GATE NAND 4CH 2-INP 14MDIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,570
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Product details
Overview
74VHCT00AN from onsemi is a quad 2-input NAND gate IC in a 14-pin PDIP package, designed for high-speed 5 V CMOS logic interfacing with TTL-compatible input thresholds (VIH = 2.0 V, VIL = 0.8 V), propagation delay of 5.0 ns (typ), and operation across −40°C to +85°C. It enables robust level-shifting between 3 V and 5 V systems and supports battery-backup dual-supply configurations.
For engineers reviewing the 74VHCT00AN datasheet, pinout, applications, or equivalent options, key selection criteria include its 5.0 ns propagation delay, ±25 mA output drive, 5.5 V absolute maximum input voltage tolerance, power-down protection on all I/O, and compatibility with legacy 74HCT00 designs.
Technical Context
The 74VHCT00AN implements four independent NAND gates using silicon-gate CMOS technology, achieving bipolar-Schottky TTL speed while retaining CMOS low power. Its three-stage internal structure includes buffered outputs for enhanced noise immunity and stable switching behavior.
Input protection circuitry allows safe application of 0 V to 5.5 V at any input or output pin regardless of VCC state-including during power-down (VCC = 0 V)-enabling hot-swap and mixed-voltage system interfacing without external clamping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - Ensures stable operation under standard 5 V supply tolerances. |
| tPD (Typ) | 5.0 ns at CL = 15 pF - Enables use in high-speed digital control and timing circuits up to ~200 MHz toggle rate. |
| VOH / VOL | ≥4.40 V / ≤0.1 V at IOH = –50 µA, IOL = 50 µA - Guarantees clean logic levels driving standard CMOS loads. |
| VIH / VIL | 2.0 V / 0.8 V - Provides TTL-compatible input thresholds for seamless integration with legacy 5 V logic families. |
| IOUT (Max) | ±25 mA per pin - Supports direct driving of LEDs, small relays, or multiple CMOS inputs without buffering. |
| ICC (Max) | 2.0 µA at TA = 25°C - Delivers ultra-low static power consumption suitable for battery-backed or energy-sensitive applications. |
| ESD Rating | 2000 V HBM - Meets industrial-grade ESD robustness requirements without external protection. |
Pinout & Package
74VHCT00AN is housed in a 14-pin plastic dual in-line package (PDIP), 0.300-inch wide body, with standard through-hole mounting and industry-compatible footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 8, 9, 12, 13 | Input (A0/B0–A3/B3) | Eight total inputs-paired as A/B for each of four NAND gates; tolerant to 0–5.5 V regardless of VCC state. |
| 3, 6, 10, 11 | Output (O0–O3) | Four independent NAND outputs; actively driven high/low or high-impedance during power-off. |
| 7 | GND | Ground reference for all logic and power domains; required for proper noise immunity and DC biasing. |
| 14 | VCC | Positive supply rail (4.5–5.5 V); powers internal logic and output drivers; decoupling capacitor recommended near pin. |
Key Features
| Feature | Design Value |
|---|---|
| High-speed propagation | 5.0 ns typical delay enables reliable operation in clocked control and combinatorial logic paths up to 200 MHz. |
| TTL-compatible input thresholds | VIH = 2.0 V and VIL = 0.8 V ensure interoperability with legacy 74LS, 74ALS, and microcontroller GPIOs. |
| Power-down I/O protection | Inputs and outputs withstand 0–5.5 V when VCC = 0 V-critical for hot-plug, backup power switchover, and partial-power-down modes. |
| Low dynamic noise | VOLP ≤ 0.8 V ensures minimal ground bounce and crosstalk in dense PCB layouts with shared return paths. |
| Pb-free & RoHS compliance | Meets global environmental regulations without compromising electrical performance or thermal reliability. |
Applications
| Industrial Control Logic | Microcontroller Interface Expansion |
|---|---|
Use Scenario: Implementing safety interlocks and enable/disable logic in PLC I/O modules where deterministic response time and voltage-level flexibility are critical. IC Role / Device Role / Timing Role: Quad NAND gate providing combinational logic for hardware-enforced shutdown conditions and signal conditioning before ADC/DAC stages. Use Value: 5.0 ns propagation delay ensures sub-microsecond decision latency; 5.5 V input tolerance prevents latch-up during field-wiring transients. | Use Scenario: Extending GPIO count of an MCU with limited native pins by decoding address/data bus lines to enable peripheral chips (e.g., sensors, DACs). IC Role / Device Role / Timing Role: Level-shifting and signal gating element that translates 3.3 V MCU outputs to 5 V peripheral enable signals while maintaining noise margin. Use Value: VIH = 2.0 V accepts 3.3 V logic highs directly; power-down protection avoids backfeeding when MCU resets or enters deep sleep. |
| Battery-Backed Memory Systems | Legacy System Upgrades |
Use Scenario: Managing write-enable and chip-select arbitration between main 5 V supply and auxiliary 3 V battery during power-fail events in SRAM or EEPROM subsystems. IC Role / Device Role / Timing Role: Voltage-agnostic NAND gate enabling fail-safe memory access control without external level translators or diodes. Use Value: Input/output tolerance to 5.5 V at VCC = 0 V eliminates need for isolation switches-reducing BOM count and board area. | Use Scenario: Replacing obsolete 74HCT00 in aging instrumentation or telecom equipment where layout reuse and drop-in compatibility are mandatory. IC Role / Device Role / Timing Role: Pin- and function-compatible logic replacement delivering identical truth table behavior with improved noise immunity and lower ICC. Use Value: Identical pinout and logic function allow zero-change PCB rework; 5.0 ns tPD meets or exceeds original 74HCT00 timing specs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NAND gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HCT00N | Slower tPD (15 ns typ), higher ICC (40 µA max), same 14-pin PDIP package and pinout. | Acceptable where speed < 10 MHz and power budget allows higher quiescent current. | Choose for cost-sensitive legacy replacements where 5 ns speed is unnecessary. |
| SN74LV00N | Wider VCC range (2–5.5 V), lower VIH (1.5 V), but only 10 ns tPD and no VCC = 0 V I/O tolerance. | Suitable for single-supply 3.3 V systems but not for mixed-voltage or battery-backup use cases. | Prefer when operating exclusively at 3.3 V and full 5.5 V input tolerance is not required. |
Compared with 74HCT00N and SN74LV00N, the 74VHCT00AN uniquely combines 5 ns speed, 5.5 V input tolerance at VCC = 0 V, and sub-µA quiescent current-making it optimal for mixed-supply, hot-swap, and energy-constrained industrial control designs.
Availability
74VHCT00AN is available at Aetrix Electronics and suitable for industrial control logic, microcontroller interface expansion, battery-backed memory systems, and legacy system upgrades requiring stable component supply and long-term manufacturing continuity.
Supply support for 74VHCT00AN 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 is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The 74VHCT00AN belongs to onsemi's VHCT logic family, engineered specifically for high-speed, low-power 5 V CMOS applications requiring robust mixed-voltage interfacing and industrial temperature operation.
FAQ
What is the maximum supply voltage rating for the 74VHCT00AN?
The 74VHCT00AN has an absolute maximum DC supply voltage (VCC) rating of +6.5 V, though its recommended operating range is strictly 4.5 V to 5.5 V. Exceeding 6.5 V risks permanent device damage, and operation outside the recommended range may degrade timing, noise immunity, or output drive capability. Always refer to the Absolute Maximum Ratings table in the official onsemi datasheet for 74VHCT00AN when designing for overvoltage resilience.
Does the 74VHCT00AN support operation with VCC = 0 V applied?
Yes-the 74VHCT00AN features built-in power-down protection that permits 0 V to 5.5 V to be safely applied to both inputs and outputs even when VCC = 0 V. This capability enables use in battery-backup systems, hot-swap interfaces, and partial-power-down architectures without risk of latch-up or device destruction. The protection circuits are intrinsic to the silicon design and require no external components to function.
Is the 74VHCT00AN pin-compatible with the 74HCT00 series?
Yes-the 74VHCT00AN is explicitly pin- and function-compatible with the 74HCT00 family, including 74HCT00N. All four NAND gates, input/output assignments, and power/ground pin locations match identically in the 14-pin PDIP package. This allows direct substitution in existing designs without PCB modification, provided timing and noise requirements align with the faster 5.0 ns propagation delay of the 74VHCT00AN.
What is the typical propagation delay of the 74VHCT00AN at 5.0 V supply?
The typical propagation delay (tPLH/tPHL) of the 74VHCT00AN is 5.0 ns when measured at VCC = 5.0 V ±0.5 V with a 15 pF capacitive load. This value is confirmed across the full industrial temperature range (−40°C to +85°C) and represents the average delay from input transition to valid output transition under standard test conditions defined in the onsemi datasheet for 74VHCT00AN.
Can the 74VHCT00AN drive standard TTL loads directly?
Yes-the 74VHCT00AN can directly drive standard TTL loads due to its output drive strength of ±25 mA per pin and TTL-compatible input thresholds (VIH = 2.0 V, VIL = 0.8 V). Its VOH ≥ 4.40 V at –50 µA and VOL ≤ 0.1 V at 50 µA meet or exceed the voltage swing requirements of 74LS and 74ALS families, eliminating the need for buffer stages in most mixed-logic interfacing scenarios involving the 74VHCT00AN.
74VHCT00AN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74VHCT
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- NAND Gate
- Number of Circuits:
- 4
- Number of Inputs:
- 2
- Features:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Max):
- 2 µA
- Current - Output High, Low:
- 8mA, 8mA
- Input Logic Level - Low:
- 0.8V
- Input Logic Level - High:
- 2V
- 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
74VHCT00AN FAQ
1.How can I place an order for 74VHCT00AN through Aetrix?
Please submit a Request for Quotation (RFQ) for 74VHCT00AN 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 74VHCT00AN reliable?
The price and inventory of 74VHCT00AN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VHCT00AN is usually 5 days.
3.What payment methods are accepted for 74VHCT00AN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VHCT00AN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74VHCT00AN?
74VHCT00AN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74VHCT00AN 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 74VHCT00AN?
For technical support, including 74VHCT00AN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VHCT00AN requirements.
6.How does Aetrix verify that 74VHCT00AN is sourced from the original manufacturer or authorized distributors?
All 74VHCT00AN 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 74VHCT00AN meets industry standards.
7.What is the process for return or replacement of 74VHCT00AN?
All 74VHCT00AN units undergo pre-shipment inspection (PSI). If there is an issue with 74VHCT00AN, 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 74VHCT00AN part is unused and in its original packaging.
Return procedure for 74VHCT00AN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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