Part A
74HC153D
東芝電晶體與存儲
- Lifecycle
- Active
- Stock
- 5590 件
- Package
- SOIC-20
- Series
- 邏輯-訊號開關、多工器、解碼器
Replacement verdict
Not a drop-in replacement
The 74HC164D and 74HC153D are functionally unrelated logic ICs and cannot serve as substitutes for one another. The 74HC164D is an 8-bit serial-in/parallel-out shift register, while the 74HC153D is a dual 4-to-1 multiplexer. Their internal architectures, pin functions, and signal flow differ fundamentally, so neither device can directly replace the other in an existing design without substantial circuit redesign.
Different logic function
Different input topology
Different output type
Different pin function
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | 74HC164D | 74HC153D | Why it matters |
|---|---|---|---|
| Logic Function | 8-bit serial-in/parallel-out shift register | Dual 4-input multiplexer | The core function determines whether the devices can substitute for each other in a circuit; these are fundamentally different logic functions. |
| Number of Inputs | 2 (data, clock) | 8 (two groups of 4 data inputs plus 2 select inputs) | Input count affects how the device interfaces with surrounding circuitry and the complexity of the signals it can process. |
| Number of Outputs | 8 parallel outputs | 2 outputs | Output count determines how many signals the device can drive simultaneously, which is critical for board-level design. |
| Output Type | Push-pull (totem-pole) | Push-pull (totem-pole) | Output configuration affects drive capability and compatibility with bus structures. |
| Propagation Delay (typical at 5V) | Approximately 20 ns | Approximately 14 ns | Propagation delay influences maximum operating frequency and timing margins in synchronous designs. |
| Supply Voltage Range | 2 V to 6 V | 2 V to 6 V | The supply range determines compatibility with 3.3 V and 5 V logic systems. |
| Package | SOIC-14 | SOIC-16 | Package and pin count must match the PCB footprint for a drop-in replacement. |
| Pin Count | 14 | 16 | Different pin counts mean the devices are not pin-compatible and cannot be interchanged without layout changes. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | The temperature range ensures reliable operation in industrial and automotive environments. |
| Maximum Clock Frequency | Approximately 60 MHz at 5 V | Not applicable (combinational logic, no clock) | Clock frequency limits the speed of sequential logic; multiplexers are combinational and have no clock requirement. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | 74HC153D | 74HC164D |
|---|---|---|
| Series | 74HC | 74HC |
| Part Status | Active | Active |
| Type | Multiplexer | - |
| Circuit | 2 x 4:1 | - |
| Independent Circuits | 2 | - |
| Current - Output High Low | 5.2mA, 5.2mA | - |
| Voltage Supply Source | Single Supply | - |
| Voltage - Supply | 2V ~ 6V | 2V ~ 6V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
| Logic Type | - | Shift Register |
| Output Type | - | Push-Pull |
| Number of Elements | - | 1 |
| Number of Bits per Element | - | 8 |
| Function | - | Serial to Parallel |
Frequently asked questions
What are the primary functional differences between the 74HC164D and the 74HC153D?
The 74HC164D is an 8-bit serial-in/parallel-out shift register, while the 74HC153D is a dual 4-input multiplexer. The 74HC164D converts serial data to parallel outputs, whereas the 74HC153D selects one of four data inputs per multiplexer based on select lines.
Can the 74HC164D and 74HC153D be used interchangeably in a circuit design?
No. They perform fundamentally different logic functions and have different pinouts. The 74HC164D has serial inputs, clock, clear, and eight parallel outputs. The 74HC153D has eight data inputs, two sets of select inputs, two outputs, and an enable per multiplexer. Direct substitution is not possible.
Do the 74HC164D and 74HC153D operate at the same supply voltage and logic levels?
Yes. Both are 74HC series CMOS devices, typically specified for a supply voltage range of 2.0 V to 6.0 V, with standard CMOS input thresholds and output drive characteristics as defined in their respective manufacturer datasheets.
What are the package and pin count differences between the 74HC164D and 74HC153D?
Both devices are commonly offered in a 14-pin SOIC package (the "D" suffix typically denotes SOIC). The 74HC164D uses 14 pins for serial inputs, clock, clear, and eight parallel outputs. The 74HC153D uses 16 pins in some package variants, but the 14-pin version exists; the 74HC153D requires pins for eight data inputs, two select inputs, two outputs, and two enable inputs. Pinouts are not compatible.
Which device is suitable for serial-to-parallel data conversion?
The 74HC164D is the correct choice for serial-to-parallel conversion. It accepts serial data on its inputs and shifts it through an 8-bit register to eight parallel outputs on each clock pulse.
Which device is suitable for data selection or multiplexing?
The 74HC153D is designed for data selection. It contains two independent 4-input multiplexers, each of which selects one of four data inputs based on two select lines and routes it to a single output.
Are the 74HC164D and 74HC153D available in the same logic family and similar speed grades?
Yes. Both are members of the 74HC high-speed CMOS logic family. Their propagation delays, transition times, and maximum operating frequencies are specified in their respective datasheets and are generally comparable within the 74HC family, though exact timing parameters differ by function.
Can the 74HC164D and 74HC153D be cascaded together in a single design?
Yes, they can be used together in a system, but they serve different roles. For example, a 74HC164D could serialize data, and a 74HC153D could multiplex control or data signals. They are not designed to be directly cascaded as a single combined function without additional logic.