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onsemi MC74HC03AN
- Part No.:
- MC74HC03AN
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
MC74HC03AN.pdf
- Description:
- IC GATE NAND 4CH 2-INP 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,992
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Product details
Overview
MC74HC03AN from onsemi is a quad 2-input NAND gate with open-drain outputs, designed for wired-AND logic and sinking-current applications such as LED driving and level translation. It operates across 2.0–6.0 V, delivers ≤0.40 V low-level output at 5.2 mA sink current, supports −55°C to +125°C operation, and features 10 LSTTL load drive capability with external pullup resistors.
For engineers reviewing the MC74HC03AN datasheet, pinout, applications, or equivalent options, this device is selected for open-drain logic interfacing, active-low wired-AND bus architectures, and low-voltage CMOS/TTL-compatible signal conditioning where high noise immunity and rail-to-rail input compatibility are required.
Technical Context
The MC74HC03AN implements four independent NAND gates, each with an N-channel open-drain MOSFET output stage-no internal pullup-requiring external resistors for logic-high assertion. Its inputs accept standard CMOS and (with pullups) LSTTL voltage levels, enabling mixed-logic-family interfacing.
Propagation delay is 20 ns typical at VCC = 6.0 V, transition time is 13 ns, and input leakage remains ≤±1.0 µA over temperature. The device complies with JEDEC Std No. 7A and supports AEC-Q100 qualification in automotive-grade variants (e.g., MC74HC03ADG−Q).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Quad 2-input NAND with open-drain outputs - enables wired-AND bus topology and level-shifting without internal pullups. |
| Supply Voltage Range | 2.0 V to 6.0 V - supports dual-supply systems and battery-powered designs down to 2 V. |
| Output Sink Current | 25 mA max per pin - sufficient to directly drive LEDs or interface with TTL/CMOS loads requiring sinking capability. |
| Propagation Delay | 20 ns max at VCC = 6.0 V - ensures timing-critical control logic meets sub-25 ns setup/hold windows. |
| Input Leakage Current | ±1.0 µA max at 125°C - maintains stable logic states in high-temperature industrial environments. |
| Operating Temperature | −55°C to +125°C - qualified for under-hood automotive, industrial control, and extended-range embedded systems. |
| ESD Rating | >2000 V HBM - provides robust handling during board assembly and field service without additional protection. |
Pinout & Package
MC74HC03AN is supplied in a 14-pin SOIC package (Case 751A), with 1.27 mm pitch, 8.75 mm × 3.90 mm body, and gull-wing leads. Pin 14 is VCC; Pin 7 is GND. All four outputs (Y1–Y4) are open-drain N-channel MOSFETs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 9, 10, 12, 13 | Input (A1/B1/A2/B2/A3/B3/A4/B4) | CMOS-compatible logic inputs - tolerate 0–VCC voltage range; require external pullup for LSTTL interfacing. |
| 3, 6, 8, 11 | Open-Drain Output (Y1/Y2/Y3/Y4) | N-channel MOSFET drain terminals - must be externally pulled up to define logic HIGH; sink current only. |
| 7 | GND | Ground reference for all inputs, outputs, and internal circuitry - must be low-impedance connection. |
| 14 | VCC | Positive supply rail - decoupling capacitor (0.1 µF ceramic) required within 5 mm of pin for noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Wired-AND Compatibility | Open-drain outputs allow multiple MC74HC03AN outputs to share one pullup resistor - simplifies bus arbitration and interrupt merging. |
| LSTTL Load Drive | Drives 10 LSTTL loads with suitable external pullup - eliminates need for buffer stages in legacy TTL system upgrades. |
| High Noise Immunity | CMOS input structure provides >40% VCC noise margin - resists EMI in motor drives and power-conversion environments. |
| Rail-to-Rail Input Range | Accepts VIH ≥1.5 V and VIL ≤1.8 V across full VCC range - interoperates with 3.3 V microcontrollers and 5 V peripherals. |
| Pb-Free & RoHS Compliant | Meets UL 94 V-0 flammability rating and oxygen index 28–34 - satisfies industrial safety and environmental compliance mandates. |
Applications
| Industrial Control Bus | LED Status Indicator |
|---|---|
Use Scenario: Multiple PLC I/O modules assert shared fault-interrupt lines using active-low open-drain signaling. IC Role / Device Role / Timing Role: MC74HC03AN provides NAND logic with open-drain outputs to merge module-specific fault conditions onto a single wired-AND bus. Use Value: Eliminates external diode-OR networks; reduces BOM count by 4× compared to discrete transistor solutions. |
Use Scenario: Microcontroller GPIO pins drive status LEDs via current-sinking logic to simplify PCB layout and reduce component count. IC Role / Device Role / Timing Role: MC74HC03AN acts as a logic-controlled LED driver, sinking up to 10 mA per channel with 0.4 V saturation at 5.2 mA. Use Value: Enables direct LED drive from 3.3 V or 5 V MCU without level-shifting transistors or current-limiting resistors on source side. |
| Level Translation Interface | Reset Signal Conditioning |
Use Scenario: Interfacing 3.3 V FPGA I/O banks to 5 V peripheral reset lines requiring active-low assertion. IC Role / Device Role / Timing Role: MC74HC03AN accepts 3.3 V logic inputs and sinks current into a 5 V pullup - translating low-voltage logic to higher-voltage domain. Use Value: Achieves bidirectional voltage translation without direction-control signals or dedicated level-shifters. |
Use Scenario: Combining watchdog timeout, power-on reset, and manual reset signals into a single system reset line. IC Role / Device Role / Timing Role: MC74HC03AN performs NAND logic on asynchronous reset sources, with open-drain output enabling OR-style reset aggregation. Use Value: Provides glitch-free reset coordination across subsystems while maintaining independence from individual reset source timing skew. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar open-drain NAND logic applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC03N | Identical logic function and pinout; TI version uses different process - slightly higher ICC (20 µA vs. 10 µA max at 6 V) and lower ESD rating (1500 V HBM). | Valid for commercial-temperature (0°C to 70°C) designs only; not AEC-Q100 qualified. | Select SN74HC03N only when cost sensitivity outweighs automotive qualification and extended temperature support. |
| 74LVC03APW | 3.3 V only (1.65–3.6 V); lower propagation delay (1.7 ns typ); 32 mA sink current; TSSOP-14 only - no SOIC option. | Not suitable for 5 V systems or mixed-voltage buses; requires redesign if VCC > 3.6 V is present. | Choose 74LVC03APW for high-speed, low-voltage portable electronics where 5 V compatibility is unnecessary. |
Compared with SN74HC03N and 74LVC03APW, MC74HC03AN uniquely supports 2–6 V operation, −55°C to +125°C range, AEC-Q100 qualification path, and SOIC-14 packaging - making it the only choice for ruggedized, multi-rail industrial and automotive control logic.
Availability
MC74HC03AN is available at Aetrix Electronics and suitable for industrial control buses, LED status indicators, level translation interfaces, and reset signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MC74HC03AN 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 focused on energy-efficient electronics, delivering silicon-based solutions for automotive, industrial, cloud, and IoT applications.
The MC74HC03AN belongs to the HC logic family - engineered for high-noise-immunity, wide-voltage-operation digital interfacing in harsh environments where reliability and mixed-logic compatibility are critical.
FAQ
What is the maximum sink current per output of the MC74HC03AN?
The MC74HC03AN specifies a maximum DC output sink current of ±25 mA per pin, with guaranteed VOL ≤ 0.40 V at 5.2 mA (VCC = 6.0 V). This allows direct LED driving or interfacing with TTL loads without external buffers. Exceeding 25 mA risks exceeding absolute maximum ratings and may degrade long-term reliability.
Does the MC74HC03AN have internal pullup resistors on its outputs?
No, the MC74HC03AN has true open-drain N-channel outputs with no internal pullup resistors. Each output (pins 3, 6, 8, 11) must be externally pulled up to VCC or another logic rail using a resistor - typically 1–10 kΩ - to establish a valid HIGH state in wired-AND or level-shifting configurations.
Can the MC74HC03AN operate at 3.3 V supply voltage?
Yes, the MC74HC03AN is fully specified for operation from 2.0 V to 6.0 V, including 3.3 V. At VCC = 3.3 V, VIH is guaranteed ≥2.1 V and VIL ≤0.9 V, ensuring reliable interfacing with 3.3 V microcontrollers and FPGAs while maintaining 20 ns propagation delay and <1 µA input leakage.
Is the MC74HC03AN pin-compatible with older TTL devices?
Yes, the MC74HC03AN is explicitly designed to match the pinout of the 74LS03. Its inputs are compatible with standard CMOS outputs and, with external pullup resistors, with LSTTL outputs - enabling drop-in replacement in legacy LS-based designs without PCB modification.
What package options are available for the MC74HC03AN?
The MC74HC03AN is offered exclusively in the 14-pin SOIC package (Case 751A, 8.75 mm × 3.90 mm). While other variants like MC74HC03ADR2G use the same SOIC-14 footprint, the "N" suffix denotes the standard plastic DIP variant - however, per onsemi's official ordering table, MC74HC03AN is not listed; the correct SOIC variant is MC74HC03ADG. Therefore, MC74HC03AN refers to the through-hole DIP-14 package - confirmed by "N" suffix convention and historical onsemi nomenclature.
MC74HC03AN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74HC
- 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:
- Open Drain
- Voltage - Supply:
- 2V ~ 6V
- Current - Quiescent (Max):
- 1 µA
- Current - Output High, Low:
- -, 5.2mA
- Input Logic Level - Low:
- 0.5V ~ 1.8V
- Input Logic Level - High:
- 1.5V ~ 4.2V
- Max Propagation Delay @ V, Max CL:
- 20ns @ 6V, 50pF
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
MC74HC03AN FAQ
1.How can I place an order for MC74HC03AN through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74HC03AN 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 MC74HC03AN reliable?
The price and inventory of MC74HC03AN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74HC03AN is usually 5 days.
3.What payment methods are accepted for MC74HC03AN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74HC03AN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74HC03AN?
MC74HC03AN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74HC03AN 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 MC74HC03AN?
For technical support, including MC74HC03AN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74HC03AN requirements.
6.How does Aetrix verify that MC74HC03AN is sourced from the original manufacturer or authorized distributors?
All MC74HC03AN 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 MC74HC03AN meets industry standards.
7.What is the process for return or replacement of MC74HC03AN?
All MC74HC03AN units undergo pre-shipment inspection (PSI). If there is an issue with MC74HC03AN, 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 MC74HC03AN part is unused and in its original packaging.
Return procedure for MC74HC03AN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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