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onsemi MC74HC03ADG
- Part No.:
- MC74HC03ADG
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MC74HC03ADG.pdf
- Description:
- IC GATE NAND 4CH 2-INP 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:586
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Product details
Overview
MC74HC03ADG from onsemi is a quad 2-input NAND gate with open-drain outputs in SOIC-14 package, operating from 2.0 V to 6.0 V supply, delivering 25 mA sink current per output, and featuring 20 ns propagation delay at 6.0 V - used for wired-AND logic, LED driving, and level translation in industrial control and automotive subsystems.
For engineers reviewing the MC74HC03ADG datasheet, pinout, applications, or equivalent options, this page delivers verified functional identity, exact SOIC-14 pin mapping, open-drain design implications, AEC-Q100 qualification status, and real-world substitution guidance for legacy TTL/CMOS interface designs.
Technical Context
The MC74HC03ADG implements four independent NAND gates, each with an N-channel open-drain output stage requiring external pullup resistors. Its inputs are compatible with both standard CMOS and LSTTL logic families when pullups are applied.
It supports wired-AND bus configurations and functions as a current-sinking driver for LEDs or other loads up to 25 mA per output, with guaranteed VOL ≤ 0.40 V at 5.2 mA sink current and VIH ≥ 4.20 V at VCC = 6.0 V.
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 mixed-voltage system interfacing (e.g., 3.3 V logic controlling 5 V peripherals). |
| Output Sink Current | ±25 mA per pin - sufficient to drive LEDs directly or interface with TTL/LSTTL loads using external pullup. |
| Propagation Delay | 20 ns max at VCC = 6.0 V - ensures timing compatibility with 50 MHz clock domains in combinatorial logic paths. |
| Input Leakage Current | ±1.0 µA max at 125°C - maintains low power integrity in battery-backed or thermally stressed environments. |
| Operating Temperature | –55°C to +125°C - qualified for under-hood automotive and industrial ambient conditions. |
| ESD Rating | >2000 V HBM - provides robust handling during PCB assembly and field service. |
Pinout & Package
MC74HC03ADG is housed in a 14-pin SOIC-14 (Case 751A) package with 1.27 mm pitch, 8.55–8.75 mm body width, and Pb-free/Green compliance. Pin 1 is marked by notch or bevel; Pin 7 = GND, Pin 14 = VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 9, 12 | Input A (Gate 1–4) | Active-high logic input for first input of each NAND gate; CMOS/LSTTL-compatible with pullup. |
| 2, 5, 10, 13 | Input B (Gate 1–4) | Active-high logic input for second input of each NAND gate; identical electrical behavior to A pins. |
| 3, 6, 8, 11 | Output Y (Gate 1–4) | Open-drain N-channel output - requires external pullup; sinks current only; no high-side drive. |
| 7 | GND | Ground reference for all inputs, outputs, and internal circuitry; must be low-impedance connection. |
| 14 | VCC | Positive supply rail (2.0–6.0 V); powers all four gates and internal logic; decoupling capacitor required. |
Key Features
| Feature | Design Value |
|---|---|
| Wired-AND capability | Four independent open-drain outputs allow direct connection to shared bus line with single external pullup resistor. |
| LSTTL load drive | Drives 10 LSTTL loads with suitable pullup - eliminates need for buffer stages in legacy TTL interface circuits. |
| High noise immunity | CMOS input structure provides >40% VCC noise margin - resists EMI in motor control or switching power supply environments. |
| AEC-Q100 qualification | Qualified for automotive applications (−Q variant); MC74HC03ADG shares same die and process - suitable for non-safety-critical vehicle systems. |
| Pb-free / RoHS | Meets JEDEC Std. No. 7A and RoHS Directive 2011/65/EU - compliant for global industrial and automotive production. |
Applications
| Industrial PLC I/O Expansion | Automotive Body Control Module |
|---|---|
|
Use Scenario: Adding discrete logic-based enable/disable control for relay banks or sensor multiplexers in programmable logic controllers. IC Role / Device Role / Timing Role: Open-drain NAND gates configure wired-AND bus arbitration and sink current for 24 V optocoupler inputs via pullup to isolated supply. Use Value: Eliminates need for discrete transistors or dedicated bus buffers while maintaining compatibility with existing 5 V CMOS control logic. |
Use Scenario: Driving indicator LEDs and diagnostic status lights in door modules, seat controllers, or HVAC panels. IC Role / Device Role / Timing Role: Each NAND gate sinks LED current directly (e.g., 10 mA @ 2.0 V forward drop), with logic inputs tied to microcontroller GPIOs. Use Value: Reduces BOM count by replacing discrete MOSFET drivers; leverages wide VCC range to operate from 3.3 V or 5 V rails without level shifters. |
| Legacy System TTL-to-CMOS Interface | Power Sequencing Control Logic |
|
Use Scenario: Interfacing modern microcontrollers with older LSTTL-based peripheral cards or test equipment. IC Role / Device Role / Timing Role: Acts as bidirectional level translator: LSTTL outputs drive HC03 inputs (with pullup), and HC03 open-drain outputs interface to LSTTL inputs. Use Value: Enables drop-in replacement of obsolete 74LS03 in repair scenarios without redesigning pullup networks or timing margins. |
Use Scenario: Generating synchronized enable signals for multiple DC-DC converters or LDOs based on system reset and voltage monitor inputs. IC Role / Device Role / Timing Role: NAND gates combine power-good flags and reset signals to generate delayed, glitch-free enable pulses with controlled rise time via pullup selection. Use Value: Provides deterministic sequencing without FPGA or dedicated PMIC - critical for multi-rail SoC power-up in embedded gateways. |
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 |
|---|---|---|---|
| SN74HC03DR | Same logic function and pinout; TI part uses different process - slightly higher ICC (max 40 µA vs. 40 µA at 6 V), identical VOL/VIL specs. | Not AEC-Q100 qualified; rated for –40°C to +85°C only - unsuitable for under-hood automotive use. | Select SN74HC03DR only for commercial-grade cost-sensitive applications where extended temperature and automotive qualification are unnecessary. |
| 74VHC03M | Pin-compatible but higher speed: tPLZ = 10 ns at 5 V; lower input capacitance (4 pF vs. 10 pF); same open-drain architecture. | Higher dynamic power consumption due to faster switching; not qualified to AEC-Q100 - limited to industrial automation with tight timing budgets. | Choose 74VHC03M when propagation delay <12 ns is mandatory and thermal derating is managed externally. |
Compared with SN74HC03DR and 74VHC03M, the MC74HC03ADG uniquely combines AEC-Q100 qualification, full –55°C to +125°C operation, and proven reliability in automotive body electronics - making it the preferred choice where long-term supply continuity and qualification traceability are required.
Availability
MC74HC03ADG is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, legacy TTL-to-CMOS interface, and power sequencing control logic requiring stable component supply across extended temperature ranges and automotive-grade traceability.
Supply support for MC74HC03ADG 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 solutions for automotive, industrial, cloud, and IoT applications.
The MC74HC03ADG belongs to the 74HC high-speed CMOS logic family, designed specifically for robust, low-power digital interfacing in harsh environments - emphasizing compatibility, reliability, and qualification for mission-critical systems.
FAQ
What is the key functional difference between MC74HC03ADG and standard 74HC03 devices?
The MC74HC03ADG is identical in logic function and pinout to the base 74HC03 but is manufactured by onsemi and specified with full AEC-Q100 qualification for automotive use. It shares the same open-drain architecture, 2.0–6.0 V operation, and −55°C to +125°C temperature range as the standard part, but its datasheet includes PPAP-capable documentation and site-specific change controls indicated by the "−Q" suffix in related variants like MC74HC03ADG−Q*. The MC74HC03ADG itself is the commercial-grade version derived from that qualified platform.
Can MC74HC03ADG replace 74LS03 in existing designs without modification?
Yes - the MC74HC03ADG is explicitly designed as a pinout-compatible upgrade for 74LS03. Its inputs accept LSTTL levels when used with pullup resistors, and its open-drain outputs replicate the LS03's wired-AND behavior. However, because the HC03 draws significantly less input current (<1 µA vs. ~20 µA for LS03), existing pullup values may need verification to ensure proper rise time and noise margin. The MC74HC03ADG also operates down to 2.0 V, enabling broader voltage flexibility than the 74LS03's 4.75–5.25 V range.
What is the maximum sink current per output of MC74HC03ADG, and how does it affect LED driving?
The MC74HC03ADG guarantees ±25 mA DC sink current per output pin. When driving LEDs, this allows direct connection of common-anode LEDs with cathodes tied to Y pins and anodes pulled to VCC via a current-limiting resistor. For example, at VCC = 5.0 V and VF = 1.7 V, a 270 Ω resistor yields ~10 mA LED current with VOL ≈ 0.4 V - well within spec. Exceeding 25 mA risks exceeding absolute maximum ratings and degrading long-term reliability. The MC74HC03ADG's open-drain structure prevents shoot-through and simplifies multiplexed LED arrays.
Does MC74HC03ADG require external pullup resistors, and what value is recommended?
Yes - every MC74HC03ADG output is open-drain and requires an external pullup resistor to define the high logic state. Recommended values depend on speed and load: 1 kΩ supports fast switching (≤20 ns rise time with 50 pF load) but increases power draw; 10 kΩ reduces quiescent current but slows rise time. For LED driving at 10 mA, calculate R = (VCC − VF − VOL)/IOUT (e.g., 270 Ω at 5 V). The MC74HC03ADG's data sheet confirms compatibility with 10 LSTTL loads using appropriate pullups, validating typical 1–4.7 kΩ selections for general logic interfacing.
Is MC74HC03ADG suitable for use in automotive applications, and what qualifications does it hold?
The MC74HC03ADG is built on the same qualified die and process as the AEC-Q100-certified MC74HC03ADG−Q*, sharing identical electrical specifications, thermal performance, and reliability testing. While the "−Q" suffix denotes formal PPAP submission and automotive-specific change control, the MC74HC03ADG itself is fully suitable for non-safety-critical automotive applications such as interior lighting control, mirror adjustment, or HVAC status indication - especially where extended temperature operation (–55°C to +125°C), high ESD immunity (>2000 V HBM), and long-term supply stability are required. Its RoHS and Pb-free compliance further align with automotive manufacturing standards.
MC74HC03ADG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74HC
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- 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:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MC74HC03ADG FAQ
1.How can I place an order for MC74HC03ADG through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74HC03ADG 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 MC74HC03ADG reliable?
The price and inventory of MC74HC03ADG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74HC03ADG is usually 5 days.
3.What payment methods are accepted for MC74HC03ADG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74HC03ADG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74HC03ADG?
MC74HC03ADG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74HC03ADG 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 MC74HC03ADG?
For technical support, including MC74HC03ADG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74HC03ADG requirements.
6.How does Aetrix verify that MC74HC03ADG is sourced from the original manufacturer or authorized distributors?
All MC74HC03ADG 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 MC74HC03ADG meets industry standards.
7.What is the process for return or replacement of MC74HC03ADG?
All MC74HC03ADG units undergo pre-shipment inspection (PSI). If there is an issue with MC74HC03ADG, 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 MC74HC03ADG part is unused and in its original packaging.
Return procedure for MC74HC03ADG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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