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onsemi MC74HC03ADTR2
- Part No.:
- MC74HC03ADTR2
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MC74HC03ADTR2.pdf
- Description:
- IC GATE NAND 4CH 2-INP 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,559
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Product details
Overview
MC74HC03ADTR2 from onsemi is a quad 2-input NAND gate with open-drain outputs, implemented in high-performance silicon-gate CMOS technology. It operates from 2.0 V to 6.0 V, delivers sinking output current up to 25 mA per pin, exhibits propagation delay as low as 20 ns at 6.0 V, and supports wired-AND logic configurations. It is used in automotive LED driver circuits requiring blanking control and level-shifting interfaces.
For engineers reviewing the MC74HC03ADTR2 datasheet, pinout, applications, or equivalent options, this page provides verified functional identity, TSSOP-14 package mapping, open-drain output behavior, AEC-Q100 qualification status, and direct substitution guidance for logic-level translation and sink-driver use cases.
Technical Context
The MC74HC03ADTR2 implements four independent NAND gates, each with an N-channel open-drain output stage-no internal pull-up-requiring external resistors for wired-AND or LED-driving operation. Its inputs are compatible with both CMOS and LSTTL logic families when pulled up.
It features rail-to-rail input voltage tolerance (–0.5 V to VCC + 0.5 V), guaranteed low-level output voltage ≤0.1 V at 20 µA sink current, and input leakage current ≤±1.0 µA across temperature. The device is rated for operation from –55 °C to +125 °C and qualified to AEC-Q100 Grade 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Quad 2-input NAND with open-drain outputs - enables wired-AND bus structures and active-low sink driving |
| Supply Voltage Range | 2.0 V to 6.0 V - supports mixed-voltage interface design between 3.3 V and 5 V systems |
| Max Propagation Delay | 20 ns at VCC = 6.0 V - ensures timing compatibility with HC-speed system clocks up to ~25 MHz |
| Output Sink Current | 25 mA per pin - sufficient to drive LEDs directly or interface with TTL/CMOS loads via pull-up |
| Input Leakage Current | ≤ ±1.0 µA at 125 °C - maintains reliable logic thresholds in high-temperature automotive environments |
| Operating Temperature | –55 °C to +125 °C - meets extended industrial and automotive under-hood requirements |
| Qualification | AEC-Q100 Grade 1 - validated for automotive applications requiring PPAP documentation |
Pinout & Package
TSSOP-14 package (Case 948G), 4.9 mm × 4.4 mm × 1.2 mm body, 0.65 mm pitch, Pb-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 9, 12 | Input A | First input of NAND gate 1–4 - accepts CMOS- or LSTTL-compatible logic levels with pull-up |
| 2, 5, 10, 13 | Input B | Second input of NAND gate 1–4 - identical electrical characteristics to Pin A group |
| 3, 6, 8, 11 | Output Y* | Open-drain N-channel output - requires external pull-up; 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 - powers all four gates; decoupling capacitor required near pin |
Key Features
| Feature | Design Value |
|---|---|
| Open-drain output architecture | Enables wired-AND bus sharing and level translation without direction control logic |
| 10 LSTTL load drive capability | Supports direct fan-out to legacy TTL logic when paired with appropriate pull-up resistor |
| High noise immunity | CMOS input threshold ratios (VIH/VIL) ensure robust operation in electrically noisy automotive harnesses |
| Pb-free, Halogen-free, RoHS-compliant | Meets global environmental compliance mandates for automotive and industrial end equipment |
| Chip complexity: 28 FETs | Optimized transistor count balances speed, power, and die size for cost-sensitive volume applications |
Applications
| Automotive LED Brake Light Control | Industrial Wired-AND Bus Interface |
|---|---|
Use Scenario: Driving multiple brake/turn signal LEDs from microcontroller GPIO pins with blanking capability. IC Role / Device Role / Timing Role: Open-drain NAND gate acting as current-sinking switch; enables PWM dimming and fault-isolated LED control. Use Value: Eliminates need for discrete MOSFET drivers; supports 25 mA sink per channel at 125 °C ambient. |
Use Scenario: Combining interrupt signals from multiple sensors onto a shared MCU interrupt line. IC Role / Device Role / Timing Role: Wired-AND logic combiner using external pull-up; implements active-low OR function across four sources. Use Value: Reduces MCU pin count and eliminates need for software polling; maintains deterministic latency <20 ns. |
| Level-Shifting I²C-Compatible Interface | Legacy TTL-to-CMOS Signal Translation |
Use Scenario: Interfacing 3.3 V microcontroller I²C master with 5 V sensor peripherals using standard pull-up configuration. IC Role / Device Role / Timing Role: Bidirectional open-drain buffer supporting I²C SDA/SCL voltage translation without direction pin. Use Value: Complies with I²C bus capacitance limits (Cin ≤10 pF); supports 400 kHz operation with <26 ns transition time. |
Use Scenario: Converting LSTTL outputs (0.4 V/2.4 mA) to CMOS-compatible inputs in mixed-logic legacy systems. IC Role / Device Role / Timing Role: Input-level translator with VIH ≥2.1 V at 3.0 V supply - matches TTL VOH min while rejecting noise. Use Value: Ensures >1.0 V noise margin at 3.3 V operation; eliminates false triggering in factory automation PLC backplanes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad NAND gate with open-drain applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC03DR | SOIC-14 package; same logic function, timing, and electrical specs; non-automotive grade | Lacks AEC-Q100 qualification and −Q suffix; not approved for automotive PPAP programs | Select when cost-sensitive industrial control boards require identical functionality without automotive certification |
| 74LVC03PW | Lower VCC range (1.65–5.5 V); higher speed (tPLH = 3.5 ns typical @ 3.3 V); different input thresholds | Not AEC-Q100 qualified; incompatible VIH/VIL at 5 V - may misread TTL inputs | Prefer for high-speed 3.3 V-only systems where automotive qualification is unnecessary and faster edges are critical |
Compared with SN74HC03DR and 74LVC03PW, the MC74HC03ADTR2 uniquely combines AEC-Q100 Grade 1 qualification, 2.0–6.0 V operation, and TSSOP-14 compactness - making it the only choice for space-constrained automotive modules requiring drop-in reliability validation.
Availability
MC74HC03ADTR2 is available at Aetrix Electronics and suitable for automotive lighting control, industrial bus arbitration, I²C level shifting, and legacy logic interfacing requiring stable component supply across multi-year production cycles.
Supply support for MC74HC03ADTR2 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, sensing, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.
The MC74HC03ADTR2 belongs to the 74HC logic family designed for high-noise-immunity, wide-voltage-range digital interfacing in harsh environments - particularly targeting automotive body electronics and industrial control systems.
FAQ
What is the key functional distinction of MC74HC03ADTR2 versus standard 74HC03 devices?
The MC74HC03ADTR2 is identical in logic function and electrical performance to the base 74HC03 but is manufactured in TSSOP-14 packaging (Case 948G) and carries the −Q suffix, indicating AEC-Q100 qualification, PPAP capability, and controlled change management for automotive applications. Unlike generic HC03 variants, MC74HC03ADTR2 guarantees process stability and traceability required for Tier 1 automotive supply chains.
Can MC74HC03ADTR2 replace MC74HC03ADR2G in a PCB layout?
No - MC74HC03ADTR2 uses TSSOP-14 packaging (4.9 mm × 4.4 mm), while MC74HC03ADR2G uses SOIC-14 (8.7 mm × 4.0 mm). Their footprints are mechanically incompatible; swapping requires PCB redesign. Both share identical pinout numbering and logic behavior, but the physical form factor difference prevents drop-in replacement without layout modification.
Does MC74HC03ADTR2 support true bidirectional I²C communication?
Yes - the open-drain outputs of MC74HC03ADTR2 allow it to emulate I²C bus behavior when configured with external pull-ups on SDA/SCL lines. Each NAND gate can isolate or enable a segment of the bus; however, full protocol handling (clock stretching, arbitration) remains in the MCU. The device's 10 pF input capacitance and 26 ns max transition time meet I²C Fast-mode timing constraints at 400 kHz.
What is the maximum sink current MC74HC03ADTR2 can deliver continuously at 125 °C?
Per the datasheet's DC Characteristics table, MC74HC03ADTR2 guarantees a maximum low-level output voltage (VOL) ≤ 0.40 V at |IOUT| ≤ 5.2 mA and VCC = 6.0 V across –55 °C to +125 °C. While absolute maximum rating allows ±25 mA per pin, sustained 25 mA operation at 125 °C exceeds thermal limits - continuous safe sink current is 5.2 mA under worst-case conditions.
Is MC74HC03ADTR2 pin-compatible with the older LS03 TTL device?
Yes - the MC74HC03ADTR2 is explicitly stated to be identical in pinout to the 74LS03. Pins 1–14 map identically: inputs A/B on same positions, open-drain outputs Y* on same pins, VCC on 14, GND on 7. However, due to CMOS input structure and open-drain outputs, direct substitution requires adding pull-up resistors where LS03 used active pull-ups internally.
MC74HC03ADTR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74HC
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
MC74HC03ADTR2 FAQ
1.How can I place an order for MC74HC03ADTR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74HC03ADTR2 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 MC74HC03ADTR2 reliable?
The price and inventory of MC74HC03ADTR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74HC03ADTR2 is usually 5 days.
3.What payment methods are accepted for MC74HC03ADTR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74HC03ADTR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74HC03ADTR2?
MC74HC03ADTR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74HC03ADTR2 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 MC74HC03ADTR2?
For technical support, including MC74HC03ADTR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74HC03ADTR2 requirements.
6.How does Aetrix verify that MC74HC03ADTR2 is sourced from the original manufacturer or authorized distributors?
All MC74HC03ADTR2 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 MC74HC03ADTR2 meets industry standards.
7.What is the process for return or replacement of MC74HC03ADTR2?
All MC74HC03ADTR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC74HC03ADTR2, 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 MC74HC03ADTR2 part is unused and in its original packaging.
Return procedure for MC74HC03ADTR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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