Part A
74LCX04MTCX
온세미
- Lifecycle
- Active
- Stock
- 4842 PCS
- Package
- TSSOP-14
- Series
- 로직 - 도어 및 인버터
Replacement verdict
Not a drop-in replacement
The 74LCX04MTCX and 74LCX02MTC are not functionally interchangeable despite sharing the same LCX logic family and TSSOP-14 package. The 74LCX04MTCX provides six independent inverters, while the 74LCX02MTC provides four 2-input NOR gates, resulting in different logic functions, channel counts, and pinout assignments. Direct substitution is not possible without circuit redesign.
Different logic function
Different gate count
Different pinout
Different input configuration
Parts at a glance
Part B
74LCX02MTC
온세미
- Lifecycle
- Active
- Stock
- 6274 PCS
- Series
- 로직 - 도어 및 인버터
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | 74LCX04MTCX | 74LCX02MTC | Why it matters |
|---|---|---|---|
| Logic Function | Hex Inverter | Quad 2-Input NOR Gate | Defines the fundamental logic operation; these devices are not functionally interchangeable. |
| Number of Gates | 6 | 4 | Determines how many independent logic operations can be performed in a single package. |
| Number of Inputs per Gate | 1 | 2 | Affects the logic capability and pin usage of each gate in the circuit. |
| Output Type | Inverting | Non-inverting (NOR) | Determines the polarity of the output relative to the input logic. |
| Pin Count | 14 | 14 | Same package pin count allows similar PCB footprint but pin functions differ. |
| Package Type | TSSOP-14 | TSSOP-14 | Identical package enables drop-in mechanical compatibility but not functional substitution. |
| Supply Voltage Range | 2.0 V to 3.6 V | 2.0 V to 3.6 V | Both operate in the low-voltage LCX family range, suitable for 3.3 V systems. |
| Propagation Delay (tpd) | 5.2 ns (max at 3.3 V) | 5.5 ns (max at 3.3 V) | Affects maximum operating frequency and timing margins in high-speed designs. |
| Output Drive Current | ±24 mA | ±24 mA | Determines fan-out capability and ability to drive loads or other logic inputs. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Ensures reliable operation across industrial temperature environments. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | 74LCX04MTCX | 74LCX02MTC |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Series | 74LCX | 74LCX |
| Part Status | Active | Obsolete |
| Logic Type | Inverter | NOR Gate |
| Number of Circuits | 6 | 4 |
| Number of Inputs | 1 | 2 |
| Voltage - Supply | 2V ~ 3.6V | 2V ~ 3.6V |
| Current - Quiescent (Max) | 10 µA | 10 µA |
| Current - Output High Low | 24mA, 24mA | 24mA, 24mA |
| Logic Level - Low | 0.7V ~ 0.8V | 0.7V ~ 0.8V |
| Logic Level - High | 1.7V ~ 2V | 1.7V ~ 2V |
| Max Propagation Delay @ V Max CL | 5.2ns @ 3.3V, 50pF | 5.2ns @ 3.3V, 50pF |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the 74LCX04MTCX and 74LCX02MTC?
The 74LCX04MTCX is a hex inverter from the LCX family, while the 74LCX02MTC is a quad 2-input NOR gate. Both are low-voltage CMOS logic devices in TSSOP packages.
What is the difference in logic function between the 74LCX04MTCX and 74LCX02MTC?
The 74LCX04MTCX contains six independent inverters, each providing a single-input NOT function. The 74LCX02MTC contains four independent 2-input NOR gates, each providing a two-input NOR function.
Are the 74LCX04MTCX and 74LCX02MTC pin-compatible?
No. The 74LCX04MTCX and 74LCX02MTC have different pin configurations because they implement different logic functions and have different gate counts. They are not pin-to-pin replacements.
What is the operating voltage range for the 74LCX04MTCX and 74LCX02MTC?
Both devices operate over a supply voltage range of 2.0 V to 3.6 V, typical of the LCX logic family.
Do the 74LCX04MTCX and 74LCX02MTC have the same package type?
Both the 74LCX04MTCX and 74LCX02MTC are offered in TSSOP packages. The 74LCX04MTCX is in a 14-lead TSSOP, and the 74LCX02MTC is in a 14-lead TSSOP as well.
Can the 74LCX04MTCX and 74LCX02MTC be used in the same application interchangeably?
No. They perform different logic functions and have different pinouts. Substitution requires redesign of the logic and PCB layout, and must be validated against the manufacturer datasheets.
Are the 74LCX04MTCX and 74LCX02MTC compatible with 5 V logic inputs?
Both devices are specified for 5 V tolerant inputs, allowing them to interface with 5 V logic while operating at 2.0 V to 3.6 V VCC, as stated in the LCX family datasheets.
What are the output drive characteristics of the 74LCX04MTCX and 74LCX02MTC?
Both devices provide balanced output drive with typical 24 mA sink and source current at 3.0 V VCC, suitable for driving moderate capacitive loads in low-voltage systems.