Part A
74VHC14MTCX
Semi - conducteurs
- Lifecycle
- Active
- Stock
- 4330 PCS
- Package
- TSSOP-14
- Series
- Logique - portes et Onduleurs
Replacement verdict
Compatible functional replacement candidate
The 74VHC14MTCX and 74VHC04FT are both VHC-family hex inverters sharing identical logic function, supply voltage range, and drive characteristics, making them strong functional replacement candidates. However, the 74VHC14MTCX provides Schmitt-trigger inputs while the 74VHC04FT provides standard unbuffered inputs, and their package formats differ (TSSOP-14 vs. TSSOP-14L). Designers must validate input signal integrity and PCB footprint compatibility before substituting.
Logic Function
High match
Input Type
Validation required
Supply Voltage Range
High match
Package Type
Validation required
Parts at a glance
Part B
74VHC04FT
Toshiba Semiconductor et stockage
- Lifecycle
- Active
- Stock
- 8822 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 | 74VHC14MTCX | 74VHC04FT | Why it matters |
|---|---|---|---|
| Logic Function | Hex Schmitt Trigger Inverter | Hex Inverter | The 74VHC14 has Schmitt-trigger inputs with hysteresis, while the 74VHC04 has standard inverter inputs; this affects noise immunity and use with slow or noisy signals. |
| Input Type | Schmitt Trigger | Standard CMOS | Schmitt-trigger inputs provide hysteresis, making the device more tolerant of slow edges and noisy input signals than standard CMOS inputs. |
| Hysteresis Voltage (VT+ - VT-) | Typically 0.9 V at VCC = 5 V | Not applicable | Hysteresis is the defining feature of the Schmitt-trigger device and is absent in the standard inverter, directly impacting noise immunity and signal conditioning capability. |
| Number of Circuits | 6 | 6 | Both devices provide six inverter circuits, so channel count is equivalent for substitution purposes. |
| Supply Voltage Range | 2.0 V to 5.5 V | 2.0 V to 5.5 V | Matching supply voltage ranges ensures both parts can operate in the same system power environment. |
| Output Drive Current | ±8 mA at VCC = 5 V | ±8 mA at VCC = 5 V | Equivalent output drive capability means both can drive similar loads without additional buffering. |
| Propagation Delay (tPD) | Typically 6.5 ns at VCC = 5 V | Typically 5.5 ns at VCC = 5 V | Propagation delay affects timing margins; the standard inverter is slightly faster, which may matter in timing-critical designs. |
| Package Type | TSSOP-14 | TSSOP-14 | Identical package and pinout allow direct board-level substitution without layout changes. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Matching temperature ranges ensure both parts are suitable for the same application environments. |
| Input Capacitance | Typically 4 pF | Typically 4 pF | Similar input capacitance means comparable loading on preceding stages and similar dynamic behavior. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | 74VHC14MTCX | 74VHC04FT |
|---|---|---|
| Supplier | - | Toshiba Semiconductor and Storage |
| Series | - | 74VHC |
| Part Status | Active | Active |
| 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 |
| Max Propagation Delay @ V Max CL | - | 7.5ns @ 5V, 50pF |
| Operating Temperature | - | -40°C ~ 125°C |
| Mounting Type | - | Surface Mount |
Frequently asked questions
What are the main functional differences between the 74VHC14MTCX and the 74VHC04FT?
The 74VHC14MTCX is a hex Schmitt-trigger inverter, while the 74VHC04FT is a hex unbuffered inverter. The 74VHC14MTCX provides hysteresis on each input, making it suitable for slow or noisy input signals, whereas the 74VHC04FT is a standard unbuffered inverter without Schmitt-trigger hysteresis.
Are the 74VHC14MTCX and 74VHC04FT pin-compatible?
Both devices are hex inverters in 14-pin packages with the same basic pin function arrangement: pins 1, 3, 5, 9, 11, and 13 are inputs, pins 2, 4, 6, 8, 10, and 12 are outputs, pin 7 is GND, and pin 14 is VCC. However, the 74VHC14MTCX is supplied in a TSSOP-14 package, while the 74VHC04FT is supplied in a TSSOP-14B package, so PCB land pattern and package dimensional checks are required before substitution.
Can the 74VHC14MTCX be used as a direct drop-in replacement for the 74VHC04FT in an existing design?
Not necessarily. Although both are hex inverters with similar pin functions, the 74VHC14MTCX has Schmitt-trigger inputs with different switching thresholds and hysteresis, while the 74VHC04FT has standard unbuffered inverter inputs. Circuit timing, noise margin, and input threshold behavior may differ, so the design must be validated against the manufacturer datasheets before substitution.
What are the recommended operating voltage ranges for these devices?
Both the 74VHC14MTCX and 74VHC04FT are VHC-family CMOS devices typically specified for a recommended operating supply voltage range of 2.0 V to 5.5 V. Exact limits should be confirmed from the respective manufacturer datasheets.
Which device is better for cleaning up slow or noisy input signals?
The 74VHC14MTCX is better suited for slow or noisy input signals because it is a Schmitt-trigger inverter with defined positive and negative input thresholds and hysteresis. The 74VHC04FT does not have Schmitt-trigger hysteresis and is intended for standard unbuffered inverter applications.
Do both parts have the same output drive capability?
No. The 74VHC14MTCX and 74VHC04FT have different output drive specifications. The 74VHC14MTCX is typically specified with higher output current drive than the 74VHC04FT, which is an unbuffered inverter with lower drive strength. Actual sourcing and sinking current limits must be verified from the manufacturer datasheets.
Are the 74VHC14MTCX and 74VHC04FT available in the same package type?
No. The 74VHC14MTCX is commonly offered in a TSSOP-14 package, while the 74VHC04FT is commonly offered in a TSSOP-14B package. These package designators are not identical, so mechanical and PCB footprint compatibility must be checked before interchange.
Which device should be selected for an unbuffered inverter application?
The 74VHC04FT should be selected for an unbuffered inverter application because it is specified as a hex unbuffered inverter. The 74VHC14MTCX is a Schmitt-trigger inverter and is not intended as a direct equivalent for unbuffered inverter requirements.