Part A
74LVC04AD
NXP USA Inc.
- Lifecycle
- Active
- Stock
- 7520 PCS
- Package
- SOIC-14
- Series
- Lógica - Gates e Inverters
Replacement verdict
Not a drop-in replacement
The 74LVC04AD and 74LVC00AS14-13 are not functionally interchangeable despite sharing the same LVC logic family and 14-pin SOIC footprint. The 74LVC04AD is a hex inverting buffer (unbuffered inverter) with six independent NOT gates, while the 74LVC00AS14-13 is a quad 2-input NAND gate with four independent NAND functions. The differing logic function, gate count, input configuration, and pinout assignment prevent direct substitution in existing designs without schematic and layout changes.
Different logic function
Different gate count
Different input configuration
Different pinout assignment
Parts at a glance
Part B
74LVC00AS14-13
Diodes Incorporated
- Lifecycle
- Active
- Stock
- 2282 PCS
- Series
- Lógica - Gates e Inverters
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | 74LVC04AD | 74LVC00AS14-13 | Why it matters |
|---|---|---|---|
| Logic Function | Hex Inverter | Quad 2-Input NAND Gate | The logic function determines the boolean operation performed; an inverter and a NAND gate are not functionally interchangeable in a circuit. |
| Number of Circuits | 6 | 4 | The number of independent gates per package affects board layout and how many inputs can be processed. |
| Number of Inputs per Gate | 1 | 2 | Input count per gate defines the logic capability; a single-input inverter cannot perform a two-input NAND function. |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) | 14-SOIC (0.154", 3.90mm Width) | Package footprint and pinout must match for a drop-in physical replacement on an existing PCB. |
| Supplier Device Package | 14-SO | 14-SO | The supplier-specific package designation confirms mechanical compatibility between the two parts. |
| Mounting Type | Surface Mount | Surface Mount | Mounting type must match the assembly process and board design. |
| Operating Voltage Range | 1.65V to 3.6V | 1.65V to 3.6V | Supply voltage range determines compatibility with the system power rail and logic levels. |
| Output Current (High/Low) | 24mA / 24mA | 24mA / 24mA | Drive current capability affects fan-out and the ability to drive downstream loads. |
| Propagation Delay | ~4.5ns at 3.3V | ~4.4ns at 3.3V | Propagation delay impacts maximum operating frequency and timing margins in synchronous designs. |
| Operating Temperature Range | -40°C to 125°C | -40°C to 125°C | Temperature range determines suitability for industrial and automotive environments. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | 74LVC04AD | 74LVC00AS14-13 |
|---|---|---|
| Supplier | - | Diodes Incorporated |
| Series | 74LVC | 74LVC |
| Part Status | Active | Active |
| Logic Type | Inverter | NAND Gate |
| Number of Circuits | 6 | 4 |
| Number of Inputs | 1 | 2 |
| Voltage - Supply | 1.65V ~ 3.6V | 1.65V ~ 5.5V |
| Current - Quiescent (Max) | 40 µA | 10 µA |
| Current - Output High Low | 24mA, 24mA | 24mA, 24mA |
| Logic Level - Low | 0.12V ~ 0.8V | 0.7V ~ 0.8V |
| Logic Level - High | 1.08V ~ 2V | 1.7V ~ 2V |
| Max Propagation Delay @ V Max CL | 6ns @ 3.3V, 50pF | 4.1ns @ 3.3V, 50pF |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the primary functional differences between the 74LVC04AD and the 74LVC00AS14-13?
The 74LVC04AD is a hex inverter, providing six independent NOT gates that output the logical inverse of the input signal. The 74LVC00AS14-13 is a quad 2-input NAND gate, providing four independent NAND functions. They differ in logic function, gate count, and input count per gate.
Are the 74LVC04AD and 74LVC00AS14-13 pin-to-pin compatible?
No. The 74LVC04AD is typically offered in a 14-pin package (e.g., SOIC-14, TSSOP-14) with a standard hex inverter pinout. The 74LVC00AS14-13 is a 14-pin device with a quad 2-input NAND pinout. Although both may use a 14-pin package, the pin functions and internal connections differ, so they are not direct pin-to-pin replacements.
Can the 74LVC04AD be used as a drop-in replacement for the 74LVC00AS14-13 in an existing design?
No. Because the logic functions and pinouts are different, substituting one for the other would require redesigning the circuit connections and verifying that the intended logic function is preserved. A direct drop-in replacement is not possible without schematic and layout changes.
Do both devices operate at the same supply voltage range?
Both are LVC-family logic devices and typically operate over a supply voltage range of 1.65 V to 3.6 V. However, always confirm the exact limits in the specific manufacturer datasheet for the 74LVC04AD and 74LVC00AS14-13, as second-source or package variants may have minor differences.
What are the typical propagation delays for these devices?
Propagation delay depends on supply voltage, load capacitance, and manufacturer. For standard LVC devices at 3.3 V, typical propagation delays are in the range of a few nanoseconds. For verified and guaranteed limits, refer to the manufacturer datasheet for each specific part number, as the 74LVC04AD and 74LVC00AS14-13 may have different specified maximum delays.
Are the 74LVC04AD and 74LVC00AS14-13 available in the same package types?
Both parts are commonly available in 14-pin packages such as SOIC-14 and TSSOP-14, but availability varies by manufacturer and distributor. The 74LVC04AD may also be offered in other packages. Always check the specific ordering code and package drawing to confirm the package type before comparing or substituting.
Which device should be used for inverting a signal, and which for implementing a NAND logic function?
Use the 74LVC04AD when a logic inversion (NOT function) is required. Use the 74LVC00AS14-13 when a 2-input NAND function is required. They are not functionally interchangeable for these purposes.
Do both devices have the same input and output drive characteristics?
Both are LVC-family devices and typically provide similar output drive currents (e.g., ±24 mA at 3.0 V for many LVC parts), but the exact drive strength, input capacitance, and output voltage levels may differ between the 74LVC04AD and 74LVC00AS14-13. Verify these parameters in the respective manufacturer datasheets before designing or substituting.