Part A
74HC03D
Toshiba Semiconductor et stockage
- Lifecycle
- Active
- Stock
- 3334 PCS
- Package
- SOIC-14
- Series
- Logique - portes et Onduleurs
Replacement verdict
Compatible functional replacement candidate
The 74HC03D-Q100J is a functionally compatible replacement candidate for the 74HC03D, sharing the same quad 2-input NAND open-drain logic function, SO14 package, and 2 V to 6 V supply range. The Q100J variant is qualified to AEC-Q100 Grade 1 for automotive applications, which extends rather than restricts its usability. Designers should verify automotive qualification requirements and confirm that the wider operating temperature range does not affect timing margins in their specific application.
Logic Function
High match
Output Type
High match
Package Type
High match
Operating Temperature
Validation required
Parts at a glance
Part B
74HC03D-Q100J
Nexperia USA Inc.
- Lifecycle
- Active
- Stock
- 9287 PCS
- Series
- Logique - portes et Onduleurs
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | 74HC03D | 74HC03D-Q100J | Why it matters |
|---|---|---|---|
| Logic Function | Quad 2-input NAND gate with open-drain outputs | Quad 2-input NAND gate with open-drain outputs | The logic function must match for the parts to be functionally interchangeable in a circuit. |
| Supply Voltage Range | 2.0 V to 6.0 V | 2.0 V to 6.0 V | Determines the compatible system voltages and ensures the device operates correctly in the target application. |
| Output Type | Open-drain | Open-drain | Open-drain outputs allow wired-AND connections and level shifting, which is critical for interface compatibility. |
| Propagation Delay (typical at 5 V) | ~8 ns | ~8 ns | Affects timing margins and maximum operating frequency in digital systems. |
| Output Drive Current | ±4 mA (at 5 V) | ±4 mA (at 5 V) | Determines the ability to drive loads such as LEDs, relays, or other logic inputs. |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C (AEC-Q100 qualified) | The Q100 version is automotive-qualified, ensuring reliability in harsh environments; non-Q100 may not meet automotive standards. |
| Qualification Standard | Standard industrial grade | AEC-Q100 qualified | AEC-Q100 qualification is required for automotive applications, affecting suitability for safety-critical systems. |
| Package Type | SO14 (SOIC-14) | SO14 (SOIC-14) | Package must match for physical board layout and soldering compatibility. |
| Pin Count | 14 | 14 | Pin count must match for drop-in replacement without PCB redesign. |
| Input Type | CMOS | CMOS | CMOS inputs provide high impedance and low power consumption, ensuring compatibility with logic families. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | 74HC03D | 74HC03D-Q100J |
|---|---|---|
| Supplier | - | Nexperia USA Inc. |
| Series | 74HC | Automotive, AEC-Q100, 74HC |
| Part Status | Active | Active |
| Logic Type | NAND Gate | NAND Gate |
| Number of Circuits | 4 | 4 |
| Number of Inputs | 2 | 2 |
| Features | Open Drain | Open Drain |
| Voltage - Supply | 2V ~ 6V | 2V ~ 6V |
| Current - Quiescent (Max) | 1 µA | 2 µA |
| Current - Output High Low | -, 5.2mA | -, 5.2mA |
| Logic Level - Low | 0.5V ~ 1.8V | 0.5V ~ 1.8V |
| Logic Level - High | 1.5V ~ 4.2V | 1.5V ~ 4.2V |
| Max Propagation Delay @ V Max CL | 13ns @ 6V, 50pF | 16ns @ 6V, 50pF |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the difference between the 74HC03D and the 74HC03D-Q100J?
The 74HC03D is a standard quad 2-input NAND gate with open-drain outputs in a SOIC-14 package. The 74HC03D-Q100J is the automotive-qualified version of the same device, compliant with the AEC-Q100 standard, and is supplied in a SOIC-14 package. The -Q100J suffix indicates automotive qualification and a specific packing or ordering variant.
Are the 74HC03D and 74HC03D-Q100J functionally interchangeable?
Yes. Both devices are quad 2-input NAND gates with open-drain outputs and share the same logic function, pinout, and package type (SOIC-14). The primary difference is the automotive qualification of the -Q100J version.
What does the Q100 suffix indicate on the 74HC03D-Q100J?
The Q100 suffix indicates that the device is qualified to the AEC-Q100 standard for automotive applications. This means it has passed additional stress testing and quality requirements beyond the standard industrial-grade 74HC03D.
Can the 74HC03D-Q100J be used in non-automotive applications?
Yes. The 74HC03D-Q100J is functionally identical to the standard 74HC03D and can be used in non-automotive designs. However, it is typically more expensive due to the additional automotive qualification testing.
Do both devices have the same electrical characteristics?
Both devices share the same basic electrical characteristics as defined by the 74HC family, including supply voltage range (2.0 V to 6.0 V), open-drain outputs, and standard propagation delays. The -Q100J version may have tighter specified limits or additional parameter guarantees over the automotive temperature range (-40 °C to +125 °C).
What is the operating temperature range for each device?
The standard 74HC03D is typically specified for -40 °C to +125 °C ambient temperature. The 74HC03D-Q100J is qualified for the automotive temperature range, which is also -40 °C to +125 °C, but with AEC-Q100 grade 1 qualification ensuring reliable operation across that range.
Are the pinouts of the 74HC03D and 74HC03D-Q100J identical?
Yes. Both devices use the standard SOIC-14 pinout for quad 2-input NAND gates with open-drain outputs. Pin 1 is the first gate output, pins 2 and 3 are the first gate inputs, and so on, with pin 7 as GND and pin 14 as VCC.
Which device should be selected for an automotive design?
For automotive designs, the 74HC03D-Q100J should be selected because it meets the AEC-Q100 qualification requirements. The standard 74HC03D is not automotive-qualified and may not meet the reliability and quality standards required for automotive applications.