My Inquiry
My Account
onsemi MC74HC03ANG
- Part No.:
- MC74HC03ANG
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
MC74HC03ANG.pdf
- Description:
- IC GATE NAND 4CH 2-INP 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,804
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MC74HC03ANG from onsemi is a quad 2-input NAND gate with open-drain outputs, designed for wired-AND logic and LED sinking applications in CMOS/NMOS/TTL interfaced systems. It operates from 2.0 V to 6.0 V, delivers up to 25 mA sink current per output, features 10 LSTTL load drive capability with pullup, and supports industrial temperature range (–55 °C to +125 °C).
For engineers reviewing the MC74HC03ANG datasheet, pinout, applications, or equivalent options, this page provides verified functional identity, SOIC-14 package mapping, open-drain output behavior, propagation delay (20 ns @ 6 V), and direct substitution guidance against industry-standard TTL-compatible logic gates.
Technical Context
The MC74HC03ANG implements four independent NAND gates, each with an N-channel open-drain output stage-no internal pullup-requiring external resistors for logic-high assertion. Its inputs are compatible with both standard CMOS and LSTTL outputs (with pullups), enabling mixed-logic-level interfacing.
It uses high-performance silicon-gate CMOS technology (28 FETs/chip), achieves low input current (±0.1 µA max), and complies with JEDEC Std 7A. The device supports wired-AND bus configurations and functions as a current-sinking driver for LEDs or other loads without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Quad 2-input NAND with open-drain outputs - enables wired-AND bus topology and active-low sinking |
| Supply Voltage Range | 2.0 V to 6.0 V - supports dual-supply systems and battery-powered logic interfaces |
| Output Sink Current | ±25 mA per pin - sufficient to drive LEDs directly or interface with 10 LSTTL loads using pullup |
| Propagation Delay | 20 ns max @ VCC = 6.0 V - ensures timing compatibility with 50 MHz system clocks |
| Input Leakage Current | ±0.1 µA max @ VCC = 6.0 V - minimizes power loss in high-impedance or battery-critical nodes |
| Operating Temperature | –55 °C to +125 °C - qualified for automotive under-hood and industrial control environments |
| ESD Rating | >2000 V HBM - provides robust handling during PCB assembly and field service |
Pinout & Package
MC74HC03ANG is supplied in a 14-pin SOIC-14 (Case 751A) package with standard 1.27 mm pitch, 8.75 mm × 3.9 mm body, and Pb-free/Green compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 9, 10, 12, 13 | Input A/B of NAND gates | Two inputs per gate (A1/B1, A2/B2, A3/B3, A4/B4); CMOS/LSTTL-compatible with pullup |
| 3, 6, 8, 11 | Open-drain output Y1–Y4 | Sinks current only; requires external pullup for HIGH logic; supports wired-AND and LED drive |
| 7 | GND | Ground reference for all inputs, outputs, and internal circuitry |
| 14 | VCC | Positive supply rail (2.0–6.0 V); powers all four gates and internal logic |
Key Features
| Feature | Design Value |
|---|---|
| Wired-AND Bus Compatibility | Open-drain outputs allow multiple MC74HC03ANG devices to share a single bus line without contention |
| LSTTL Load Drive | Drives 10 LSTTL loads when used with appropriate pullup resistor - eliminates need for buffer stages |
| High Noise Immunity | CMOS input structure provides >40% noise margin at VCC = 5 V - improves reliability in noisy industrial settings |
| Low Quiescent Current | ICC ≤ 40 µA max @ 125 °C - reduces standby power in always-on embedded controllers |
| AEC-Q100 Qualified Option | MC74HC03ADG−Q variant available - meets automotive qualification requirements for temperature, ESD, and life testing |
Applications
| LED Driver Circuit | Wired-AND Bus Interface |
|---|---|
Use Scenario: Driving multiple indicator LEDs in a programmable logic controller (PLC) I/O module with shared current-limiting resistor network. IC Role / Device Role / Timing Role: Open-drain NAND gate sinks LED current; logic state determines illumination via active-low control. Use Value: Eliminates discrete transistor drivers; simplifies layout and reduces BOM count while maintaining precise current control per LED. | Use Scenario: Implementing arbitration logic across three microcontrollers sharing a common interrupt line. IC Role / Device Role / Timing Role: Each MCU drives one MC74HC03ANG output low to assert interrupt; bus remains HIGH unless any device pulls it LOW. Use Value: Enables hardware-level priority resolution without software polling or external OR gate; deterministic response within 20 ns. |
| Level Translation Interface | Legacy TTL System Integration |
Use Scenario: Interfacing a 3.3 V FPGA GPIO bank to a 5 V sensor subsystem requiring active-low enable signals. IC Role / Device Role / Timing Role: MC74HC03ANG accepts 3.3 V CMOS inputs and sinks 5 V bus current - acts as unidirectional voltage translator. Use Value: No level-shifter IC needed; avoids timing skew and adds only 20 ns propagation delay - preserves signal integrity in real-time sensing paths. | Use Scenario: Replacing obsolete 74LS03 in a legacy test equipment backplane where pinout compatibility is mandatory. IC Role / Device Role / Timing Role: Drop-in replacement for LS03 with identical pinout and wired-AND functionality; operates at lower power and wider voltage range. Use Value: Extends product lifecycle without PCB redesign; reduces supply current by >95% versus LS03 while maintaining full functional equivalence. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NAND gate with open-drain output applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC03N | Same logic function and SOIC-14 package; TI version has slightly higher VOL (0.36 V @ 4 mA vs. 0.26 V @ 4 mA) | Valid for general-purpose logic but less suitable for low-VOL LED driving at 3.3 V | Select MC74HC03ANG when lowest output voltage drop and AEC-Q100 support are required |
| 74VHC03N | Higher speed (tPLZ = 10 ns @ 5 V) but narrower VCC range (2.0–5.5 V); not AEC-Q100 qualified | Better for high-frequency clock gating; unsuitable for 6 V industrial sensors or automotive use | Choose 74VHC03N only if sub-15 ns propagation is critical and 6 V operation is unnecessary |
Compared with SN74HC03N and 74VHC03N, MC74HC03ANG offers superior sink performance at 6 V, guaranteed AEC-Q100 qualification for automotive variants, and tighter VOL specification - making it optimal for LED drivers, wired-AND buses, and legacy TTL upgrades demanding long-term reliability.
Availability
MC74HC03ANG is available at Aetrix Electronics and suitable for industrial PLCs, automotive body control modules, LED signage controllers, and legacy system upgrades requiring stable component supply and long-lifecycle support.
Supply support for MC74HC03ANG 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, analog, sensor, and logic solutions for automotive, industrial, and cloud infrastructure markets.
The MC74HC03ANG belongs to the 74HC high-speed CMOS logic family, engineered for low-power, wide-voltage-range digital interfacing in harsh environments - particularly where wired-AND, LED sinking, or TTL-to-CMOS translation is required.
FAQ
What is the maximum sink current per output of the MC74HC03ANG?
The MC74HC03ANG specifies a maximum DC output sink current of ±25 mA per pin, measured at VCC = 6.0 V and TJ = 25 °C. This rating allows direct driving of standard LEDs or interfacing with up to 10 LSTTL loads when used with an appropriate external pullup resistor. Exceeding this limit risks thermal overstress and reduced reliability over time.
Does the MC74HC03ANG have internal pullup resistors on its outputs?
No, the MC74HC03ANG does not include internal pullup resistors. Its outputs are true open-drain N-channel MOSFETs requiring external pullup resistors to establish a logic HIGH state. This architecture enables wired-AND functionality and flexible voltage-level selection on the output bus - a key design feature confirmed in the onsemi datasheet Figure 1 and Functional Table.
Is the MC74HC03ANG pin-compatible with the 74LS03?
Yes, the MC74HC03ANG is explicitly stated in the onsemi datasheet to be identical in pinout to the 74LS03. All 14 pins match functionally: inputs A1–B4 occupy pins 1,2,4,5,9,10,12,13; open-drain outputs Y1–Y4 are on pins 3,6,8,11; VCC is pin 14; GND is pin 7. This enables direct replacement in legacy designs without PCB modification.
What is the minimum operating voltage for the MC74HC03ANG?
The MC74HC03ANG supports a minimum DC supply voltage of 2.0 V, as specified in the Recommended Operating Conditions table. At this voltage, it maintains valid logic thresholds (VIH = 1.5 V, VIL = 0.5 V), propagation delay ≤120 ns, and output sink capability - making it suitable for battery-powered or low-voltage embedded systems where rail efficiency is critical.
Can the MC74HC03ANG be used in automotive applications?
Yes - the MC74HC03ANG has an automotive-qualified variant: MC74HC03ADG−Q (SOIC-14) and MC74HC03ADR2G−Q (tape-and-reel), both AEC-Q100 qualified and PPAP capable. These versions undergo extended temperature stress, ESD, and lifetime testing per automotive standards, and are designated with the "−Q" suffix in the ordering code per the onsemi datasheet page 6.
MC74HC03ANG 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
MC74HC03ANG FAQ
1.How can I place an order for MC74HC03ANG through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74HC03ANG 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 MC74HC03ANG reliable?
The price and inventory of MC74HC03ANG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74HC03ANG is usually 5 days.
3.What payment methods are accepted for MC74HC03ANG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74HC03ANG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74HC03ANG?
MC74HC03ANG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74HC03ANG 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 MC74HC03ANG?
For technical support, including MC74HC03ANG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74HC03ANG requirements.
6.How does Aetrix verify that MC74HC03ANG is sourced from the original manufacturer or authorized distributors?
All MC74HC03ANG 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 MC74HC03ANG meets industry standards.
7.What is the process for return or replacement of MC74HC03ANG?
All MC74HC03ANG units undergo pre-shipment inspection (PSI). If there is an issue with MC74HC03ANG, 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 MC74HC03ANG part is unused and in its original packaging.
Return procedure for MC74HC03ANG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC74HC03ANG Tags
-
SN74LVC1G14DBVR
Texas Instruments
-
SN74LVC1G14DCKR
Texas Instruments
-
SN74AHC1G14DBVR
Texas Instruments
-
SN74LVC1G08DBVR
Texas Instruments
-
SN74LVC1G08DCKR
Texas Instruments
-
SN74LVC1G32DCKR
Texas Instruments
-
SN74LVC1G04DBVR
Texas Instruments
.jpg)
-
74LVC1G08GW,125
Nexperia USA Inc.
-
SN74LVC1G04DCKR
Texas Instruments
-
SN74AHC1G08DBVR
Texas Instruments
-
SN74LVC1G32DBVR
Texas Instruments
-
SN74AHCT1G08DBVR
Texas Instruments
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
