Part A
74LVTH244MTC
온세미
- Lifecycle
- Active
- Stock
- 1272 PCS
- Package
- TSSOP-20
- Series
- 논리 - 버퍼, 드라이브, 수신기, 트랜시버
Replacement verdict
Not a drop-in replacement
The 74LVTH244MTC and 74LVT02PW,118 are not functionally interchangeable. The 74LVTH244MTC is an octal buffer/line driver with 3-state outputs, while the 74LVT02PW,118 is a quad 2-input NOR gate. They differ in logic function, channel count, output type, and package footprint, making direct substitution impossible without circuit redesign.
Different logic function
Different channel count
Different output type
Different package footprint
Parts at a glance
Part B
74LVT02PW,118
넥스페리아 USA 주식회사
- Lifecycle
- Active
- Stock
- 7164 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 | 74LVTH244MTC | 74LVT02PW,118 | Why it matters |
|---|---|---|---|
| Logic Function | Octal Buffer/Line Driver with 3-State Outputs | Quad 2-Input NOR Gate | The two devices perform fundamentally different logic functions, so they are not functionally interchangeable in a circuit. |
| Number of Channels / Gates | 8 buffers | 4 NOR gates | Channel count determines how many signal paths can be handled by a single package. |
| Output Type | 3-State | Totem-Pole | 3-state outputs allow bus sharing and high-impedance disconnection, while totem-pole outputs are always actively driven. |
| Supply Voltage Range | 2.7 V to 3.6 V | 2.7 V to 3.6 V | Both devices operate over the same low-voltage LVT/LVTH supply range, supporting 3.3 V logic systems. |
| Propagation Delay (tpd) | Approximately 3.5 ns at 3.3 V | Approximately 3.6 ns at 3.3 V | Propagation delay affects timing margins and maximum operating frequency in synchronous designs. |
| Package Type | TSSOP-20 | TSSOP-14 | Different package sizes and pin counts affect PCB footprint and layout compatibility. |
| Pin Count | 20 | 14 | Pin count must match the board layout; a mismatch prevents direct drop-in replacement. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Both parts support industrial temperature ranges, making them suitable for similar environmental conditions. |
| Logic Family | LVTH | LVT | LVTH includes bus-hold functionality, while LVT does not, affecting input behavior when lines are floating. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | 74LVTH244MTC | 74LVT02PW,118 |
|---|---|---|
| Supplier | - | Nexperia USA Inc. |
| Series | 74LVTH | 74LVT |
| Part Status | Obsolete | Active |
| Logic Type | Buffer, Non-Inverting | NOR Gate |
| Number of Circuits | - | 4 |
| Number of Inputs | - | 2 |
| Voltage - Supply | 2.7V ~ 3.6V | 2.7V ~ 3.6V |
| Current - Output High Low | 32mA, 64mA | 20mA, 32mA |
| Logic Level - Low | - | 0.8V |
| Logic Level - High | - | 2V |
| Max Propagation Delay @ V Max CL | - | 2.8ns @ 3.3V, 50pF |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
| Number of Elements | 2 | - |
| Number of Bits per Element | 4 | - |
| Output Type | 3-State | - |
Frequently asked questions
What are the primary functional differences between the 74LVTH244MTC and the 74LVT02PW,118?
The 74LVTH244MTC is an octal buffer/line driver with 3-state outputs, while the 74LVT02PW,118 is a quad 2-input NOR gate. They serve entirely different logic functions and are not pin-to-pin or function-to-function replacements.
Do the 74LVTH244MTC and 74LVT02PW,118 share the same logic family and supply voltage range?
Yes. Both devices belong to the LVT/LVTH low-voltage CMOS logic family and operate over a supply voltage range of 2.7 V to 3.6 V, making them compatible with 3.3 V systems.
Are the package types of the 74LVTH244MTC and 74LVT02PW,118 interchangeable on a PCB?
No. The 74LVTH244MTC is supplied in a 20-pin TSSOP package, while the 74LVT02PW,118 is supplied in a 14-pin TSSOP package. The different pin counts and footprints prevent direct PCB interchangeability.
Can the 74LVTH244MTC and 74LVT02PW,118 be used in the same 3.3 V logic design?
Yes, provided the design accounts for their different logic functions. The 74LVTH244MTC can buffer or drive signals with 3-state control, while the 74LVT02PW,118 can implement NOR logic. Both are specified for 3.3 V operation and can coexist in a mixed-function design.
What are the output drive characteristics of the 74LVTH244MTC compared with the 74LVT02PW,118?
The 74LVTH244MTC is specified with ±32 mA output drive at 3.3 V, suitable for bus driving and line buffering. The 74LVT02PW,118 is a standard LVT logic gate with lower output drive, typically ±20 mA or less depending on the manufacturer’s datasheet. Exact drive levels should be verified on the respective manufacturer datasheets.
Do both the 74LVTH244MTC and 74LVT02PW,118 support live insertion or hot-swap applications?
The 74LVTH244MTC includes power-up 3-state and live-insertion capability as part of the LVTH feature set. The 74LVT02PW,118 is a standard LVT gate and does not typically include the same live-insertion or power-up 3-state specifications. Designers should confirm this on the official datasheets before use in hot-swap designs.
Are the 74LVTH244MTC and 74LVT02PW,118 available in halogen-free or RoHS-compliant versions?
Both part numbers are generally available as RoHS-compliant and halogen-free versions from major manufacturers such as Nexperia and Texas Instruments. However, compliance status can vary by production lot and manufacturer. Always verify the specific ordering code and environmental compliance on the manufacturer’s or distributor’s official product page.