Part A
74HCT14D
東芝セミコンダクター・アンド・ストレージ
- Lifecycle
- Active
- Stock
- 6342 個数
- Package
- SOIC-14
- Series
- ロジック - ゲートおよびインバータ
Replacement verdict
Not a drop-in replacement
The 74HCT4052D and 74HCT14D are functionally unrelated devices: one is a dual 4-channel analog multiplexer/demultiplexer, while the other is a hex inverting Schmitt trigger. They differ in core function, channel configuration, input/output characteristics, and signal behavior, so neither part can directly substitute for the other in an existing design.
Different logic function
Different channel configuration
Different input threshold behavior
Different output drive characteristics
Parts at a glance
Part B
74HCT4052D
東芝セミコンダクター・アンド・ストレージ
- Lifecycle
- Active
- Stock
- 3196 個数
- Package
- SOIC-16
- Series
- インターフェース - アナログスイッチ、マルチプレクサ、デマルチプレクサ
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | 74HCT4052D | 74HCT14D | Why it matters |
|---|---|---|---|
| Function | Dual 4-channel analog multiplexer/demultiplexer | Hex inverting Schmitt trigger | These devices perform completely different logic/analog functions, so they are not functionally substitutable. |
| Logic Family | HCT (TTL-compatible CMOS) | HCT (TTL-compatible CMOS) | Same logic family means compatible input thresholds and supply levels, but the internal function still differs. |
| Supply Voltage Range | 4.5 V to 5.5 V | 4.5 V to 5.5 V | Both operate from a standard 5 V supply, allowing use in the same system voltage domain. |
| Number of Channels | 2 channels (each 4:1 multiplexer) | 6 channels (hex inverter) | Channel count determines how many signals can be routed or processed, affecting circuit design capacity. |
| Input Type | Analog/digital signal inputs with select and enable controls | Schmitt trigger inputs | Schmitt trigger inputs provide hysteresis for noisy signals, while the multiplexer passes analog or digital signals without hysteresis. |
| Output Type | Analog/digital signal pass-through (bidirectional) | Digital inverted output | The multiplexer can route bidirectional signals, whereas the inverter only provides a logic inversion output. |
| Propagation Delay | Typically 4 ns (at 5 V) | Typically 20 ns (at 5 V) | Different delay characteristics affect timing in high-speed signal paths. |
| Package | SO16 (SOIC-16) | SO14 (SOIC-14) | Different pin counts and footprints prevent direct PCB drop-in replacement. |
| Pin Count | 16 | 14 | Pin count mismatch means the devices cannot share the same socket or PCB layout. |
| Typical Application | Signal routing, analog switching, multiplexing | Signal conditioning, debouncing, waveform shaping | Intended applications differ, so one cannot directly replace the other in a design. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | 74HCT14D | 74HCT4052D |
|---|---|---|
| Series | 74HCT | - |
| Part Status | Active | Active |
| Logic Type | Inverter | - |
| Number of Circuits | 6 | 2 |
| Number of Inputs | 1 | - |
| Features | Schmitt Trigger | - |
| Voltage - Supply | 4.5V ~ 5.5V | - |
| Current - Quiescent (Max) | 1 µA | - |
| Current - Output High Low | 4mA, 4mA | - |
| Max Propagation Delay @ V Max CL | 31ns @ 5.5V, 50pF | - |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Switch Circuit | - | DP4T |
| Multiplexer / Demultiplexer Circuit | - | 4:1 |
| On - State Resistance(Max) | - | 150Ohm |
| Channel - to - Channel Matching(ΔRon) | - | 6Ohm |
| Voltage - Supply, Single (V+) | - | 4.5V ~ 5.5V |
| Voltage - Supply, Dual (V±) | - | ±1V ~ 5V |
| Switch Time(Ton Toff)(Max) | - | 60ns, 48ns |
| -3 dB Bandwidth | - | 180MHz |
| Channel Capacitance(CS(off)CD(off)) | - | 3.5pF |
| Current - Leakage(IS(off))(Max) | - | 2µA |
| Crosstalk | - | -60dB @ 1MHz |
Frequently asked questions
What are the primary functions of the 74HCT4052D and 74HCT14D?
The 74HCT4052D is a dual 4-channel analog multiplexer/demultiplexer, while the 74HCT14D is a hex inverting Schmitt trigger. They serve entirely different signal-routing and signal-conditioning roles.
Can the 74HCT4052D and 74HCT14D be used interchangeably in a design?
No. The 74HCT4052D switches analog or digital signals between multiple channels, whereas the 74HCT14D provides hysteresis-based inversion of digital inputs. Their pinouts, functions, and internal circuitry are not compatible for direct substitution.
Do both devices operate from the same supply voltage range?
Both are HCT-family devices typically specified for a 4.5 V to 5.5 V supply. However, the 74HCT4052D also supports analog signal swings within its supply rails, while the 74HCT14D is intended for digital input signals.
What are the package and pin count differences between the 74HCT4052D and 74HCT14D?
The 74HCT4052D is commonly supplied in a 16-pin SOIC package, and the 74HCT14D is commonly supplied in a 14-pin SOIC package. Pin counts and pin functions differ, so PCB footprints are not interchangeable.
Which device is suitable for analog signal multiplexing?
The 74HCT4052D is the appropriate choice for analog signal multiplexing/demultiplexing because it is designed to pass analog signals within the supply voltage limits. The 74HCT14D is not intended for analog signal routing.
Which device is suitable for cleaning up slow or noisy digital edges?
The 74HCT14D is suitable for cleaning up slow or noisy digital edges because it is a Schmitt-trigger inverter with defined hysteresis. The 74HCT4052D does not provide Schmitt-trigger input hysteresis.
Are the logic thresholds and input structures the same for both parts?
No. The 74HCT14D has Schmitt-trigger inputs with hysteresis thresholds, while the 74HCT4052D has standard CMOS/TTL-compatible control inputs for channel selection. Their input characteristics and threshold behavior are not equivalent.
Can both devices be used in the same 5 V mixed-signal system?
Yes, both can operate in a 5 V system, but they perform different functions. The 74HCT4052D can route analog or digital signals, and the 74HCT14D can invert and square up digital signals. They are complementary rather than interchangeable.