Part A
74HC4053D
Toshiba Halbleiter und Speicher
- Lifecycle
- Active
- Stock
- 1212 Stückzahl
- Package
- SOIC-16
- Series
- Schnittstelle für analoge Schalter, Multiplexer, Demultiplexer
Replacement verdict
Compatible functional replacement candidate
The 74HC4066D and 74HC4053D are both quad bilateral analog switch/multiplexer devices in the same SOIC-14 package with identical supply voltage and logic-level compatibility, making them functionally interchangeable in many designs. However, the 74HC4066D provides four independent SPST switches while the 74HC4053D offers three SPDT switches with a common enable, so the internal switch topology and control logic differ. Designers must verify channel configuration and control signal mapping before substituting.
Package Type
High match
Supply Voltage Range
High match
Switch Configuration
Validation required
Control Logic Interface
Validation required
Parts at a glance
Part B
74HC4066D
Toshiba Halbleiter und Speicher
- Lifecycle
- Active
- Stock
- 7546 Stückzahl
- Package
- SOIC-14
- Series
- Schnittstelle für analoge Schalter, Multiplexer, Demultiplexer
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | 74HC4066D | 74HC4053D | Why it matters |
|---|---|---|---|
| Function / Configuration | Quad single-pole single-throw (SPST) bilateral analog switch | Triple single-pole double-throw (SPDT) analog multiplexer/demultiplexer | Determines the switching topology; SPST switches cannot directly replace SPDT multiplexers in circuits requiring channel selection between two paths. |
| Number of Switches | 4 independent switches | 3 independent switches (each SPDT) | Affects how many signals can be routed; a 4-switch device cannot match a 3-channel 2:1 multiplexer function without external logic. |
| Control Inputs per Switch | 1 control input per switch | 1 select input per switch (chooses between two throws) | Defines the logic interface; SPDT devices require a select signal to choose the active path, while SPST devices simply enable or disable conduction. |
| Typical On-Resistance (Ron) | ~50 Ω at VCC = 4.5 V (typical) | ~70 Ω at VCC = 4.5 V (typical) | Lower on-resistance reduces signal attenuation and voltage drop, which is critical for analog signal integrity and load driving. |
| On-Resistance Matching | ~5 Ω (typical between switches) | ~8 Ω (typical between switches) | Better matching ensures consistent signal levels across channels, important in precision analog and multiplexed measurement applications. |
| Propagation Delay (tpd) | ~7 ns at VCC = 4.5 V (typical) | ~9 ns at VCC = 4.5 V (typical) | Faster switching supports higher-frequency signals and reduces timing skew in multiplexed data acquisition systems. |
| Package | SO14 (14-pin small outline) | SO16 (16-pin small outline) | Different pin counts and footprints prevent direct drop-in replacement without PCB layout changes. |
| Pin Count | 14 pins | 16 pins | Pin count affects board space, routing, and compatibility with existing sockets or footprints. |
| Supply Voltage Range | 2 V to 10 V | 2 V to 10 V | Both support similar low-voltage logic and analog rails, but the functional difference still prevents direct substitution. |
| Analog Signal Range | 0 V to VCC | 0 V to VCC | Both pass signals within the supply rails, but the SPDT configuration of the 74HC4053D allows routing to two destinations, unlike the 74HC4066D. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | 74HC4053D | 74HC4066D |
|---|---|---|
| Part Status | Active | Active |
| Multiplexer / Demultiplexer Circuit | 2:1 | 1:1 |
| Number of Circuits | 3 | 4 |
| On - State Resistance(Max) | 100Ohm | 80Ohm |
| Channel - to - Channel Matching(ΔRon) | 5Ohm (Typ) | 5Ohm (Typ) |
| Voltage - Supply, Single (V+) | 2V ~ 6V | 2V ~ 12V |
| Switch Time(Ton Toff)(Max) | 38ns, 38ns | 12ns, 12ns |
| -3 dB Bandwidth | 200MHz | 200MHz |
| Channel Capacitance(CS(off)CD(off)) | 5pF | 3pF |
| Current - Leakage(IS(off))(Max) | 100nA | 100nA |
| Crosstalk | -50dB @ 1MHz | -60dB @ 1MHz |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the main functional difference between the 74HC4066D and the 74HC4053D?
The 74HC4066D contains four independent bilateral analog switches with a common control scheme, while the 74HC4053D contains three single-pole double-throw (SPDT) analog switches, each with its own select and enable control. The 74HC4066D is used for simple signal routing or switching, whereas the 74HC4053D is used for multiplexing or selecting between two signal paths per channel.
Are the 74HC4066D and 74HC4053D pin-compatible?
No. The 74HC4066D and 74HC4053D are not pin-compatible. The 74HC4066D has 14 pins with four independent switches and shared control pins, while the 74HC4053D has 16 pins with three SPDT switches and individual control pins. Their pinouts and package sizes differ, so they cannot be interchanged without PCB redesign.
Can the 74HC4066D directly replace the 74HC4053D in an existing design?
No. The 74HC4066D cannot directly replace the 74HC4053D because the 74HC4053D provides SPDT switching with separate select and enable inputs, while the 74HC4066D provides independent SPST switches. The control logic, pin count, and switching topology are different, so a direct drop-in replacement is not possible.
What are the typical on-state resistance values for the 74HC4066D and 74HC4053D?
Both the 74HC4066D and 74HC4053D are specified with typical on-state resistance (RON) in the range of tens of ohms at 4.5 V supply, with values increasing at lower supply voltages. For exact RON limits and test conditions, refer to the manufacturer datasheet, as values vary by supply voltage, temperature, and input signal level.
Do both the 74HC4066D and 74HC4053D support bidirectional analog signal switching?
Yes. Both the 74HC4066D and 74HC4053D are bilateral analog switches and can pass analog signals in either direction. They are suitable for both AC and DC signal switching within their specified voltage and current limits.
What supply voltage range is common to the 74HC4066D and 74HC4053D?
Both devices are 74HC-family CMOS analog switches and typically operate from a supply voltage range of 2 V to 6 V. Some manufacturers also specify operation up to 10 V for certain variants, but the standard 74HC4066D and 74HC4053D are specified for 2 V to 6 V operation. Always confirm the exact limits in the manufacturer datasheet.
Which device is better for multiplexing two analog signals into one output?
The 74HC4053D is better suited for multiplexing two analog signals into one output because it contains SPDT switches that can select between two inputs per channel. The 74HC4066D contains SPST switches, so multiplexing would require external wiring or additional logic to combine switch outputs.
Are the 74HC4066D and 74HC4053D available in the same package type?
Both devices are commonly available in SOIC-14 and SOIC-16 packages, respectively, as indicated by the "D" suffix in their part numbers. The 74HC4066D uses a 14-pin package, while the 74HC4053D uses a 16-pin package. They are not available in the same pin count or footprint.