Part A
74HC4050D
Компания Toshiba Semiconductor и Storage
- Lifecycle
- Active
- Stock
- 3727 ПКС
- Package
- SOIC-16
- Series
- Логика - буферы, драйверы, приемники, передатчики
Replacement verdict
Not a drop-in replacement
The 74HC4052D and 74HC4050D are functionally unrelated devices: the 74HC4052D is a dual 4-channel analog multiplexer/demultiplexer with bidirectional analog signal routing, while the 74HC4050D is a hex non-inverting buffer with high-to-low logic-level conversion. Although both share the 74HC CMOS family, 2–6 V supply range, and SO16 package, their internal signal paths, channel counts, and I/O characteristics differ fundamentally, so neither part can substitute for the other in an existing design without circuit redesign.
Different function
Different channel count
Different signal path
Different logic behavior
Parts at a glance
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | 74HC4052D | 74HC4050D | Why it matters |
|---|---|---|---|
| Function | Dual 4-channel analog multiplexer/demultiplexer | Hex non-inverting buffer/converter | These devices perform fundamentally different functions, so they are not functionally substitutable in a circuit. |
| Number of Channels | 2 channels (each 4:1) | 6 channels | Channel count determines how many independent signals can be routed or buffered. |
| Signal Type | Analog and digital | Digital only | Analog capability allows the 74HC4052D to pass continuously varying signals, which the 74HC4050D cannot. |
| Switch Configuration | 4:1 multiplexer/demultiplexer per channel | Fixed non-inverting buffer | Multiplexing enables signal selection, while buffering only provides drive strength and isolation. |
| On-Resistance | Typically 80 Ω at 4.5 V | Not applicable (no analog switch) | On-resistance affects signal attenuation and accuracy in analog switching applications. |
| Propagation Delay | Typically 8 ns at 4.5 V | Typically 10 ns at 4.5 V | Propagation delay influences maximum operating frequency and timing margins in digital systems. |
| Supply Voltage Range | 2 V to 10 V | 2 V to 6 V | A wider supply range provides greater flexibility across different logic families and battery-powered designs. |
| Output Drive Current | ±25 mA | ±5.2 mA | Higher drive current allows the device to directly drive heavier loads such as LEDs or long traces. |
| Package | SO16 (SOIC-16) | SO16 (SOIC-16) | Matching package footprints allow pin-compatible board layouts, though electrical function still differs. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Industrial temperature range ensures reliable operation in harsh environments. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | 74HC4050D | 74HC4052D |
|---|---|---|
| Series | 74HC | - |
| Part Status | Active | Active |
| Logic Type | Buffer, Non-Inverting | - |
| Number of Elements | 6 | - |
| Number of Bits per Element | 1 | - |
| Current - Output High Low | 7.8mA, 7.8mA | - |
| Voltage - Supply | 2V ~ 6V | - |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Switch Circuit | - | SP4T |
| Multiplexer / Demultiplexer Circuit | - | 4:1 |
| Number of Circuits | - | 2 |
| On - State Resistance(Max) | - | 130Ohm |
| Channel - to - Channel Matching(ΔRon) | - | 4Ohm |
| Voltage - Supply, Single (V+) | - | 2V ~ 6V |
| Switch Time(Ton Toff)(Max) | - | 34ns, 32ns |
| Channel Capacitance(CS(off)CD(off)) | - | 10pF |
| Current - Leakage(IS(off))(Max) | - | 1µA |
| Crosstalk | - | -50dB @ 1MHz |
Frequently asked questions
What are the primary functional differences between the 74HC4052D and the 74HC4050D?
The 74HC4052D is a dual 4-channel analog multiplexer/demultiplexer, while the 74HC4050D is a hex non-inverting buffer/converter. The 74HC4052D routes analog or digital signals between a common terminal and one of four independent channels per section, whereas the 74HC4050D provides six independent buffer channels for logic-level conversion and signal isolation.
Are the 74HC4052D and 74HC4050D pin-compatible?
No. The 74HC4052D is typically supplied in a 16-pin SOIC package, and the 74HC4050D is typically supplied in a 16-pin SOIC package, but their pin functions differ. The 74HC4052D includes analog switch control inputs, common I/O pins, and channel I/O pins, while the 74HC4050D includes six buffer inputs and six buffer outputs with different supply and ground pin assignments. They are not direct pin-to-pin replacements.
Can the 74HC4052D and 74HC4050D operate from the same supply voltage range?
Yes. Both devices are members of the 74HC family and are specified for a nominal supply voltage range of 2.0 V to 6.0 V. However, electrical characteristics such as propagation delay, on-resistance, and output drive differ between the two functions and must be evaluated for the specific application.
Which device is suitable for analog signal switching, the 74HC4052D or the 74HC4050D?
The 74HC4052D is suitable for analog signal switching because it is designed as an analog multiplexer/demultiplexer with bidirectional analog signal capability. The 74HC4050D is a digital buffer and is not intended for analog signal routing.
Which device is suitable for logic-level conversion or buffering, the 74HC4052D or the 74HC4050D?
The 74HC4050D is suitable for logic-level conversion and buffering because it contains six non-inverting buffer channels. The 74HC4052D is not a buffer and is intended for signal routing rather than logic-level translation.
Do both the 74HC4052D and 74HC4050D have standard 74HC input and output voltage thresholds?
Both devices are 74HC-family parts and use CMOS input thresholds referenced to the supply voltage. The 74HC4050D provides buffered digital outputs, while the 74HC4052D passes signals through analog switch channels, so its output levels depend on the applied signal and load rather than on a fixed logic buffer stage.
Are the 74HC4052D and 74HC4050D interchangeable in existing designs?
No. They perform different functions, have different internal architectures, and are not pin-compatible. A direct substitution would require a complete review of pinout, signal type, supply conditions, and circuit function against the manufacturer datasheets.
What package types are commonly available for the 74HC4052D and 74HC4050D?
Both the 74HC4052D and 74HC4050D are commonly available in SOIC-16 packages. Package options can vary by manufacturer, so the specific orderable part number and datasheet should be checked for the exact package, packing, and temperature grade.