Part A
74HC4052D
Toshiba Semiconductor et stockage
- Lifecycle
- Active
- Stock
- 5305 PCS
- Package
- SOIC-16
- Series
- Interfaces - commutateurs analogiques, multiplexeurs, démultiplexeurs
Replacement verdict
Compatible functional replacement candidate
The 74HC4051D and 74HC4052D share the same HC-family CMOS process, SO16 package, and wide supply voltage range, making them functionally related analog multiplexer/demultiplexer devices. However, they are not pin-to-pin or channel-count equivalent: the 74HC4051D is an 8-channel single-ended multiplexer, while the 74HC4052D is a dual 4-channel differential multiplexer. Direct substitution requires validation of channel configuration, control logic, and signal routing within the target application.
Channel Configuration
Validation required
Control Logic Inputs
Validation required
Package Type
High match
Supply Voltage Range
High match
Parts at a glance
Part B
74HC4051D
Toshiba Semiconductor et stockage
- Lifecycle
- Active
- Stock
- 5871 PCS
- Package
- SOIC-14
- Series
- Interfaces - commutateurs analogiques, multiplexeurs, démultiplexeurs
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | 74HC4051D | 74HC4052D | Why it matters |
|---|---|---|---|
| Multiplexer Configuration | 8-channel single 1-of-8 (8:1) | Dual 4-channel (dual 4:1) | Defines the switching topology; an 8:1 mux cannot directly replace a dual 4:1 mux in circuits that route two independent signal pairs. |
| Number of Channels | 1 channel (8 inputs to 1 output) | 2 channels (4 inputs to 1 output each) | Determines how many independent signal paths can be switched simultaneously, affecting board layout and channel count requirements. |
| Control Inputs (Address Lines) | 3 select lines (S0, S1, S2) | 2 select lines (S0, S1) | Different address line counts require different GPIO allocation and control logic from the host controller. |
| On-Resistance (Ron) at VCC = 4.5 V | Typically 70 Ω | Typically 70 Ω | Lower on-resistance reduces signal attenuation and voltage drop, which is critical for analog signal integrity. |
| Supply Voltage Range | 2 V to 10 V | 2 V to 10 V | Determines compatibility with the system power rail and logic level requirements. |
| Propagation Delay (tpd) | Typically 8 ns at VCC = 4.5 V | Typically 8 ns at VCC = 4.5 V | Affects switching speed and timing margins in high-frequency multiplexing applications. |
| Package Type | SO16 (SOIC-16) | SO16 (SOIC-16) | Same package footprint allows drop-in PCB compatibility without layout changes. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Ensures reliable operation across industrial and automotive temperature environments. |
| Logic Family | HC (High-speed CMOS) | HC (High-speed CMOS) | Same logic family ensures compatible input thresholds and output drive characteristics. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | 74HC4052D | 74HC4051D |
|---|---|---|
| Part Status | Active | Active |
| Switch Circuit | SP4T | - |
| Multiplexer / Demultiplexer Circuit | 4:1 | 8:1 |
| Number of Circuits | 2 | 1 |
| On - State Resistance(Max) | 130Ohm | 130Ohm |
| Channel - to - Channel Matching(ΔRon) | 4Ohm | 4Ohm |
| Voltage - Supply, Single (V+) | 2V ~ 6V | 2V ~ 6V |
| Switch Time(Ton Toff)(Max) | 34ns, 32ns | 34ns, 32ns |
| Channel Capacitance(CS(off)CD(off)) | 10pF | 10pF |
| Current - Leakage(IS(off))(Max) | 1µA | 1µA |
| Crosstalk | -50dB @ 1MHz | -50dB @ 1MHz |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the main functional difference between the 74HC4051D and the 74HC4052D?
The 74HC4051D is an 8-channel analog multiplexer/demultiplexer with a single common input/output and eight independent channels, controlled by three select inputs (S0, S1, S2). The 74HC4052D is a dual 4-channel analog multiplexer/demultiplexer with two common inputs/outputs and four independent channels per section, controlled by two select inputs (S0, S1). Both are HC-family CMOS devices with similar analog signal handling characteristics.
Are the 74HC4051D and 74HC4052D pin-compatible?
No. The 74HC4051D and 74HC4052D have different pin functions and internal switch configurations. The 74HC4051D uses three select inputs and provides one common terminal with eight channels, while the 74HC4052D uses two select inputs and provides two common terminals with four channels each. Their pinouts are not interchangeable, so direct substitution without PCB redesign is not possible.
What supply voltage range do the 74HC4051D and 74HC4052D support?
Both the 74HC4051D and 74HC4052D are specified for a wide supply voltage range typical of the 74HC405x family, commonly from 2 V to 10 V for analog signal handling, with digital control inputs compatible with standard CMOS logic levels. Exact limits should be verified against the specific manufacturer datasheet, as parameters such as on-resistance and switching times vary with supply voltage.
Can the 74HC4051D and 74HC4052D be used for bidirectional analog signal switching?
Yes. Both the 74HC4051D and 74HC4052D are bidirectional analog multiplexer/demultiplexer devices. They can route analog signals in either direction between the common terminal(s) and the selected channel(s), making them suitable for multiplexing and demultiplexing applications within their specified signal voltage and current limits.
How do the control logic inputs differ between the 74HC4051D and 74HC4052D?
The 74HC4051D uses three binary select inputs (S0, S1, S2) to address one of eight channels, plus an enable input. The 74HC4052D uses two binary select inputs (S0, S1) to address one of four channels in each of its two sections, plus an enable input. The number of select lines directly reflects the channel count difference between the two devices.
What are typical applications for the 74HC4051D versus the 74HC4052D?
The 74HC4051D is typically used where a single signal path must be selected from eight sources or routed to eight destinations, such as multi-channel data acquisition or signal routing. The 74HC4052D is used where two independent 4-channel multiplexing/demultiplexing paths are needed, such as differential signal switching or dual-channel audio/video routing. Both are used in analog and mixed-signal systems requiring low on-resistance and low leakage.
Do the 74HC4051D and 74HC4052D have the same on-resistance characteristics?
Both devices belong to the same 74HC405x analog switch family and typically exhibit similar on-resistance behavior as a function of supply voltage and analog input voltage. However, exact on-resistance values can differ between the 8-channel and dual 4-channel configurations due to internal switch architecture. Designers should consult the respective manufacturer datasheets for guaranteed RON specifications under the intended operating conditions.
Can the 74HC4051D be replaced by the 74HC4052D in an existing design?
No, not directly. The 74HC4051D provides one common terminal and eight channels, while the 74HC4052D provides two common terminals and four channels per section. The channel count, control logic, and pinout differ, so replacing one with the other requires circuit redesign and validation against the target application requirements.