Part A
74HC164D
Toshiba Semiconductor and Storage
- Lifecycle
- Active
- Stock
- 2726 PCS
- Package
- SOIC-8
- Series
- Lógica - Registos de Maiúsculas
Replacement verdict
Not a drop-in replacement
The 74HC164D and 74HC132D,652 are not functionally interchangeable despite sharing the 74HC CMOS logic family and SO-14 package. The 74HC164D is an 8-bit serial-in/parallel-out shift register, while the 74HC132D,652 is a quad 2-input Schmitt-trigger NAND gate. Their internal logic functions, pin assignments, and signal flow architectures are fundamentally different, so neither device can directly substitute for the other in an existing design without circuit redesign.
Different logic function
Different pinout
Different input type
Different output type
Parts at a glance
Part B
74HC132D,652
Semiconductores NXP
- Lifecycle
- Active
- Stock
- 4717 PCS
- Series
- Lógica - Gates e Inverters
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 | 74HC132D,652 | Why it matters |
|---|---|---|---|
| Logic Function | 8-bit serial-in/parallel-out shift register | Quad 2-input NAND Schmitt trigger | The core logic function determines whether the devices are functionally interchangeable; these are fundamentally different functions and cannot substitute for each other. |
| Number of Gates / Stages | 1 shift register (8 stages) | 4 NAND gates | The count of independent logic elements affects how many signals can be processed simultaneously in a circuit. |
| Input Type | Standard CMOS (non-Schmitt) | Schmitt trigger | Schmitt trigger inputs provide hysteresis, improving noise immunity and enabling use with slow or noisy input signals. |
| Output Type | Push-pull (standard CMOS) | Push-pull (standard CMOS) | Output drive configuration affects compatibility with downstream loads and bus topologies. |
| Propagation Delay (typical at 4.5V) | ~20 ns | ~15 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 voltage range determines compatibility with the system power rail and logic level families. |
| Output Current (per pin) | ±4 mA (at 4.5V) | ±4 mA (at 4.5V) | Drive current capability determines how many inputs or loads can be driven directly without buffering. |
| Package | SO-14 (SOIC-14) | SO-14 (SOIC-14) | Package type affects PCB footprint, thermal performance, and assembly compatibility. |
| Pin Count | 14 | 14 | Pin count must match the PCB footprint and is a basic physical compatibility requirement. |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | The temperature range determines suitability for industrial, automotive, or commercial environments. |
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 | 74HC164D | 74HC132D,652 |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Active |
| Series | 74HC | - |
| Logic Type | Shift Register | - |
| Output Type | Push-Pull | - |
| Number of Elements | 1 | - |
| Number of Bits per Element | 8 | - |
| Function | Serial to Parallel | - |
| Voltage - Supply | 2V ~ 6V | - |
| Operating Temperature | -40°C ~ 125°C | - |
| Mounting Type | Surface Mount | - |
Frequently asked questions
What are the primary functional differences between the 74HC164D and the 74HC132D,652?
The 74HC164D is an 8-bit serial-in/parallel-out shift register with a synchronous clear, while the 74HC132D,652 contains four independent 2-input NAND gates with Schmitt-trigger inputs. They perform entirely different logic functions and are not interchangeable.
Can the 74HC164D and 74HC132D,652 be used in the same circuit?
Yes, they can coexist in the same design because both are 74HC-family devices, but they serve different roles: the 74HC164D handles serial-to-parallel data conversion, and the 74HC132D,652 provides Schmitt-trigger NAND logic for signal conditioning or gating.
Do the 74HC164D and 74HC132D,652 have the same package and pinout?
No. The 74HC164D is typically supplied in a 14-pin SOIC package, while the 74HC132D,652 is also a 14-pin SOIC device, but their pin assignments differ because they implement different internal functions. Pin-to-pin compatibility is not guaranteed.
What are the key electrical characteristics of the 74HC164D?
The 74HC164D operates from a 2 V to 6 V supply, features typical propagation delay of 20 ns at 5 V, and provides standard CMOS output drive. It includes a serial data input, a clock input, and an asynchronous clear input.
What are the key electrical characteristics of the 74HC132D,652?
The 74HC132D,652 operates from a 2 V to 6 V supply and features Schmitt-trigger inputs with hysteresis, improving noise immunity. Each of the four NAND gates has a typical propagation delay of 15 ns at 5 V and standard CMOS output drive.
Are the 74HC164D and 74HC132D,652 interchangeable in existing designs?
No. Because their logic functions, pinouts, and internal architectures are different, one cannot directly replace the other without redesigning the circuit and verifying all timing, loading, and signal-integrity requirements.
Which applications typically use the 74HC164D versus the 74HC132D,652?
The 74HC164D is commonly used for LED matrix driving, I/O expansion, and serial-to-parallel data conversion. The 74HC132D,652 is used for debouncing mechanical switches, waveform shaping, and logic gating where Schmitt-trigger hysteresis is required.