Part A
74VHC14MTCX
onsemi
- Lifecycle
- Active
- Stock
- 4330 PCS
- Package
- TSSOP-14
- Series
- Logic - Gates and Inverters
Replacement verdict
Compatible functional replacement candidate
The 74VHC14MTCX and 74VHC04MTC share the same VHC-family TSSOP-14 footprint, supply voltage range, and logic function, but the 74VHC14MTCX provides Schmitt-trigger inputs while the 74VHC04MTC provides standard unbuffered inverter inputs. The 74VHC14MTCX is a functional replacement candidate for the 74VHC04MTC in most noise-sensitive or slow-edge applications, but input threshold and hysteresis behavior must be validated against the target design.
Input Type
Validation required
Logic Function
High match
Package Type
High match
Supply Voltage Range
High match
Parts at a glance
Part B
74VHC04MTC
onsemi
- Lifecycle
- Active
- Stock
- 5228 PCS
- Series
- Logic - Gates and 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 | 74VHC14MTCX | 74VHC04MTC | Why it matters |
|---|---|---|---|
| Logic Function | Hex Inverter with Schmitt Trigger Inputs | Hex Inverter | The Schmitt trigger inputs on the 74VHC14MTCX provide hysteresis, making it suitable for slow or noisy input signals, whereas the 74VHC04MTC has standard inputs and is intended for clean digital signals. |
| Input Type | Schmitt Trigger | Standard CMOS | Schmitt trigger inputs tolerate slow edge rates and noisy signals, while standard CMOS inputs require fast, clean transitions to avoid oscillation and excessive current draw. |
| Hysteresis Voltage (Typical) | Approximately 0.9 V at VCC = 5 V | None (no hysteresis) | Hysteresis improves noise immunity and ensures clean switching for slowly changing input signals; its absence in the 74VHC04MTC means noisy inputs can cause multiple transitions. |
| Supply Voltage Range | 2.0 V to 5.5 V | 2.0 V to 5.5 V | Both devices operate over the same supply voltage range, allowing them to be used in similar 2 V to 5.5 V logic systems. |
| Number of Gates | 6 | 6 | Both devices provide six independent inverter gates, so the channel count is identical for circuit design purposes. |
| Output Drive Current | ±8 mA at VCC = 5 V | ±8 mA at VCC = 5 V | Matching output drive current means both parts can drive similar loads and interface with comparable downstream logic or indicators. |
| Propagation Delay (Typical) | Approximately 5.5 ns at VCC = 5 V | Approximately 5.5 ns at VCC = 5 V | Similar propagation delay indicates comparable switching speed, which is important for timing-sensitive digital circuits. |
| Package Type | TSSOP-14 | TSSOP-14 | Identical package and pin count allow either device to be used in the same PCB footprint without layout changes. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | The same industrial temperature range ensures both parts are suitable for the same environmental conditions. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | 74VHC14MTCX | 74VHC04MTC |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC,onsemi |
| Series | - | 74VHC |
| Part Status | Active | Obsolete |
| Logic Type | - | Inverter |
| Number of Circuits | - | 6 |
| Number of Inputs | - | 1 |
| Voltage - Supply | - | 2V ~ 5.5V |
| Current - Quiescent (Max) | - | 2 µA |
| Current - Output High Low | - | 8mA, 8mA |
| Logic Level - Low | - | 0.5V |
| Logic Level - High | - | 1.5V |
| Max Propagation Delay @ V Max CL | - | 7.5ns @ 5V, 50pF |
| Operating Temperature | - | -40°C ~ 85°C |
| Mounting Type | - | Surface Mount |
Frequently asked questions
What is the primary functional difference between the 74VHC14MTCX and the 74VHC04MTC?
The 74VHC14MTCX contains six independent Schmitt-trigger inverters, providing defined output states for slow or noisy input signals. The 74VHC04MTC contains six standard inverters without Schmitt-trigger hysteresis. Both are fabricated in advanced silicon-gate CMOS technology and have identical pinouts in the TSSOP-14 package.
Are the 74VHC14MTCX and 74VHC04MTC pin-to-pin compatible?
Yes. Both devices are offered in the same 14-lead TSSOP package (MTC suffix) and share the same standard 74-series hex-inverter pinout: pins 1, 3, 5, 9, 11, and 13 are inputs; pins 2, 4, 6, 8, 10, and 12 are outputs; pin 7 is GND; pin 14 is VCC. This allows a common PCB land pattern.
Can the 74VHC14MTCX be used as a direct drop-in replacement for the 74VHC04MTC in an existing design?
Not unconditionally. Although the pinout and package are identical, the 74VHC14MTCX has Schmitt-trigger inputs with hysteresis (typically VT+ = 1.7 V and VT- = 0.9 V at VCC = 3.3 V), while the 74VHC04MTC has standard CMOS input thresholds. Substitution is acceptable only if the additional hysteresis does not alter timing, duty cycle, or logic-level margins in the target circuit, as verified against the respective manufacturer datasheets.
How do the propagation delays of the 74VHC14MTCX and 74VHC04MTC compare?
Both devices are specified with typical propagation delay of approximately 5.0 ns at VCC = 5.0 V and 25°C, with a maximum of 8.5 ns over the full recommended operating range. The Schmitt-trigger input of the 74VHC14MTCX does not significantly degrade this parameter under standard datasheet test conditions.
What are the recommended operating voltage ranges for these devices?
Both the 74VHC14MTCX and 74VHC04MTC are specified for a recommended operating supply voltage range of 2.0 V to 5.5 V. They are not characterized for operation below 2.0 V or above 5.5 V.
Do both devices have the same output drive capability?
Yes. Both the 74VHC14MTCX and 74VHC04MTC provide standard VHC-family output drive: ±8 mA at VCC = 5.0 V and ±4 mA at VCC = 3.3 V, with symmetrical source and sink currents. This is specified in the respective manufacturer DC electrical characteristics tables.
Which device is better for interfacing with slow or noisy input signals?
The 74VHC14MTCX is specifically designed for such applications because its Schmitt-trigger inputs provide hysteresis, ensuring clean, jitter-free output transitions even with slowly changing or noisy input waveforms. The 74VHC04MTC lacks hysteresis and may produce multiple output transitions or increased power dissipation when driven with slow edges.
Are the 74VHC14MTCX and 74VHC04MTC available in the same package and from the same manufacturers?
Both devices are available in the TSSOP-14 package (MTC suffix) from major manufacturers such as ON Semiconductor (onsemi), Texas Instruments, and Nexperia. The 74VHC14MTCX is commonly associated with onsemi, while the 74VHC04MTC is also offered by onsemi and other suppliers. Package and pinout are standardized across these sources.