Overview
The 74HC166D,653 is an 8-bit parallel-in/serial-out shift register produced by Nexperia USA Inc. This device is part of the 74HC and 74HCT series, known for their CMOS and TTL logic switching levels, respectively. The 74HC166D,653 features a serial data input (DS), eight parallel data inputs (D0 to D7), and a serial output (Q7). It is designed for synchronous parallel-to-serial applications and offers a wide supply voltage range, low power dissipation, and high noise immunity.
Key Specifications
| Parameter | Value |
|---|---|
| VCC (V) | 2.0 - 6.0 |
| Logic Switching Levels | CMOS |
| Output Drive Capability (mA) | ± 5.2 |
| Propagation Delay (ns) | 15 |
| Maximum Frequency (MHz) | 63 |
| Number of Bits | 8 |
| Power Dissipation Considerations | Low |
| Operating Temperature Range (°C) | -40 to 125 |
| Thermal Resistance (K/W) | 74 (j-a), 1.2 (j-top), 32 (j-c) |
| Package Type | SO16 (SOT109-1) |
Key Features
- Wide supply voltage range from 2.0 V to 6.0 V.
- CMOS low power dissipation.
- High noise immunity.
- Latch-up performance exceeds 100 mA per JESD 78 Class II Level B.
- Inputs include clamp diodes to interface inputs to voltages in excess of VCC.
- Synchronous parallel-to-serial data conversion.
- Serial data input (DS) and serial output (Q7).
- Eight parallel data inputs (D0 to D7).
- Parallel enable input (PE) and clock enable input (CE) for flexible data loading and shifting.
Applications
The 74HC166D,653 is suitable for a variety of applications across different industries, including:
- Automotive systems: For data processing and transmission in vehicle control systems.
- Industrial automation: In control circuits and data logging systems.
- Consumer electronics: In devices requiring serial data transmission such as audio and video equipment.
- Computing and networking: For serial communication interfaces and data buffering.
- Wearables and mobile devices: Where low power consumption and compact design are crucial.
Q & A
- What is the primary function of the 74HC166D,653?
The primary function is to convert parallel data into serial data. - What is the supply voltage range for the 74HC166D,653?
The supply voltage range is from 2.0 V to 6.0 V. - What are the logic switching levels for the 74HC166D,653?
The logic switching levels are CMOS. - How many bits of data can the 74HC166D,653 handle?
The device can handle 8 bits of data. - What is the maximum frequency at which the 74HC166D,653 can operate?
The maximum frequency is 63 MHz. - What is the operating temperature range for the 74HC166D,653?
The operating temperature range is from -40°C to 125°C. - How does the parallel enable input (PE) function?
When PE is LOW, data from D0 to D7 is loaded into the shift register on the next LOW-to-HIGH transition of the clock input (CP). - What is the purpose of the clock enable input (CE)?
A LOW on CE enables data to be shifted on the LOW-to-HIGH transitions of CP, while a HIGH on CE disables the CP input. - Does the 74HC166D,653 include any protection features for the inputs?
Yes, the inputs include clamp diodes to interface inputs to voltages in excess of VCC. - What package types are available for the 74HC166D,653?
The device is available in SO16 (SOT109-1) package.
