Part A
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
Replacement verdict
Not a drop-in replacement
The 74HCT4052D and 74HCT7273D,118 are functionally unrelated devices and cannot serve as substitutes for one another. The 74HCT4052D is a dual 4-channel analog multiplexer/demultiplexer, while the 74HCT7273D,118 is an 8-bit shift register with output latches. Their core functions, pin configurations, and signal handling characteristics are fundamentally different, making direct replacement impossible without complete circuit redesign.
Different function type
Different channel count
Different pinout
Different logic architecture
Parts at a glance
Part B
74HCT7273D,118
パナソニック電子部品
- Lifecycle
- Active
- Stock
- 4249 個数
- Series
- ロジック - フリップフロップ
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 | 74HCT7273D,118 | Why it matters |
|---|---|---|---|
| Function | Dual 4-channel analog multiplexer/demultiplexer | Dual 4-bit binary counter with reset | These devices perform completely different logic functions, so they are not functionally substitutable in a circuit. |
| Logic Family | HCT (high-speed CMOS, TTL-compatible) | HCT (high-speed CMOS, TTL-compatible) | Both share the same logic family, giving similar input thresholds and supply compatibility. |
| Supply Voltage Range | 4.5 V to 5.5 V | 4.5 V to 5.5 V | Identical operating voltage range means both can be powered from the same 5 V rail. |
| Number of Channels / Bits | 2 channels (4:1 multiplexing each) | 2 counters (4-bit each) | Channel/bit count determines how many signals can be routed or counted, affecting system architecture. |
| Package | SO16 (SOIC-16) | SO16 (SOIC-16) | Same package footprint allows drop-in board placement, though pin functions differ. |
| Propagation Delay | Typically ~10 ns at 5 V | Typically ~20 ns at 5 V | Delay affects maximum operating frequency and timing margins in synchronous designs. |
| Output Drive Current | ±4 mA typical | ±4 mA typical | Drive strength determines fan-out capability and ability to drive downstream loads. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Matching temperature ranges ensure both parts suit the same environmental conditions. |
| Control Inputs | 2 select lines + inhibit | Clock + reset per counter | Different control schemes mean the surrounding logic and timing circuitry cannot be reused directly. |
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 | 74HCT4052D | 74HCT7273D,118 |
|---|---|---|
| Supplier | - | NXP USA Inc. |
| Series | - | 74HCT |
| Part Status | Active | Obsolete |
| Function | - | Master Reset |
| Type | - | D-Type |
| Output Type | - | Non-Inverted |
| Number of Elements | - | 1 |
| Number of Bits per Element | - | 8 |
| Clock Frequency | - | 56 MHz |
| Max Propagation Delay @ V Max CL | - | 30ns @ 4.5V, 50pF |
| Trigger Type | - | Positive Edge |
| Current - Output High Low | - | -, 4mA |
| Voltage - Supply | - | 4.5V ~ 5.5V |
| Current - Quiescent (Iq) | - | 8 µA |
| Input Capacitance | - | 3.5 pF |
| Operating Temperature | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Switch Circuit | DP4T | - |
| Multiplexer / Demultiplexer Circuit | 4:1 | - |
| Number of Circuits | 2 | - |
| 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
Are the 74HCT4052D and 74HCT7273D,118 functionally interchangeable?
No. The 74HCT4052D is a dual 4-channel analog multiplexer/demultiplexer, while the 74HCT7273D,118 is an 8-bit shift register with output latches. They perform fundamentally different logic and signal-routing functions and are not pin-to-pin or function-to-function replacements.
What is the primary function of the 74HCT4052D?
The 74HCT4052D is a dual 4-channel analog multiplexer/demultiplexer that selects one of four differential or eight single-ended analog inputs and routes the selected signal to a common output, controlled by digital select inputs.
What is the primary function of the 74HCT7273D,118?
The 74HCT7273D,118 is an 8-bit serial-in/parallel-out shift register with output latches, used for serial-to-parallel data conversion and temporary data storage in digital systems.
Do the 74HCT4052D and 74HCT7273D,118 use the same package and pinout?
No. The 74HCT4052D is typically supplied in SO16 or equivalent 16-pin packages, while the 74HCT7273D,118 is supplied in a 20-pin package such as SO20. Pin counts, pin assignments, and PCB land patterns differ, so they are not drop-in compatible.
Can the 74HCT4052D and 74HCT7273D,118 operate from the same supply voltage?
Both are HCT-family devices and are specified for 5 V nominal operation with TTL-compatible input thresholds. However, detailed supply voltage ranges, absolute maximum ratings, and DC characteristics must be verified from the respective manufacturer datasheets before use in a common design.
Are the 74HCT4052D and 74HCT7273D,118 used in the same types of applications?
No. The 74HCT4052D is used for analog signal selection, sensor multiplexing, and audio/video routing, while the 74HCT7273D,118 is used for digital data shifting, I/O expansion, and serial-to-parallel conversion. Their application domains are distinct.
What should be verified before considering either part for a new design?
Verify the manufacturer datasheet for supply voltage range, input/output voltage levels, propagation delays, package dimensions, pinout, operating temperature range, and any application-specific timing or analog characteristics. Do not assume compatibility based on the shared 74HCT prefix alone.