Overview
The MC14021BDR2G is an 8-bit static shift register produced by onsemi. It is part of the MC14021B series, which is constructed with MOS P-channel and N-channel enhancement mode devices in a single monolithic structure. This component is designed for various digital logic applications, including parallel-to-serial data conversion, synchronous and asynchronous parallel input, and serial output data queueing. It is known for its low power consumption and high noise immunity, making it suitable for a wide range of electronic systems.
Key Specifications
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| DC Supply Voltage Range | VDD | -0.5 to +18.0 | V |
| Input or Output Voltage Range | Vin, Vout | -0.5 to VDD + 0.5 | V |
| Input or Output Current (DC or Transient) per Pin | Iin, Iout | ±10 | mA |
| Power Dissipation, per Package | PD | 500 | mW |
| Ambient Temperature Range | TA | -55 to +125 | °C |
| Storage Temperature Range | Tstg | -65 to +150 | °C |
| Lead Temperature (8-Second Soldering) | TL | 260 | °C |
| Output Voltage “0” Level (VOH) | VOH | 4.95 to 14.95 | Vdc |
| Output Voltage “1” Level (VOL) | VOL | 0.05 | Vdc |
| Input Voltage “0” Level (VIL) | VIL | 1.5 to 4.0 | Vdc |
| Input Voltage “1” Level (VIH) | VIH | 3.5 to 11 | Vdc |
| Output Drive Current (IOH) | IOH | -3.0 to -8.8 | mA |
| Output Drive Current (IOL) | IOL | 0.64 to 8.8 | mA |
| Quiescent Current (IDD) | IDD | 0.005 to 0.015 | μA |
| Total Supply Current (IT) | IT | (0.75 μA/kHz) f + IDD | μA |
Key Features
- Synchronous and Asynchronous Parallel Input/Serial Output: The MC14021B supports both synchronous and asynchronous parallel input to serial output operations.
- Full Static Operation: The device operates in a full static mode, ensuring data is retained even when the clock is not active.
- “Q” Outputs from Sixth, Seventh, and Eighth Stages: External access to the outputs of the sixth, seventh, and eighth stages is available.
- Double Diode Input Protection: The component includes double diode input protection to guard against high static voltages or electric fields.
- Wide Supply Voltage Range: The device can operate over a supply voltage range of 3.0 Vdc to 18 Vdc.
- Low Power Consumption: Capable of driving two low-power TTL loads or one low-power Schottky TTL load over the rated temperature range.
- Pb-Free and RoHS Compliant: The component is lead-free and compliant with RoHS regulations.
- AEC-Q100 Qualified and PPAP Capable: Suitable for automotive and other applications requiring unique site and control change requirements.
Applications
- Parallel-to-Serial Data Conversion: Ideal for converting parallel data into serial data streams.
- Synchronous and Asynchronous Data Queueing: Used in applications requiring synchronous or asynchronous parallel input and serial output data queueing.
- General Purpose Register Applications: Suitable for various general-purpose register applications that require low power and high noise immunity.
- Automotive Systems: Qualified for automotive applications due to its AEC-Q100 certification and PPAP capability.
- Industrial Control Systems: Used in industrial control systems where reliable and low-power data handling is necessary.
Q & A
- What is the primary function of the MC14021B?
The primary function of the MC14021B is to perform parallel-to-serial data conversion and to handle synchronous and asynchronous parallel input and serial output data queueing.
- What is the supply voltage range for the MC14021B?
The supply voltage range for the MC14021B is from 3.0 Vdc to 18 Vdc.
- What kind of input protection does the MC14021B have?
The MC14021B includes double diode input protection to guard against high static voltages or electric fields.
- Is the MC14021B Pb-free and RoHS compliant?
- What are the typical applications of the MC14021B?
The MC14021B is typically used in parallel-to-serial data conversion, synchronous and asynchronous data queueing, general-purpose register applications, automotive systems, and industrial control systems.
- What is the maximum ambient temperature range for the MC14021B?
The maximum ambient temperature range for the MC14021B is from -55°C to +125°C.
- How many TTL loads can the MC14021B drive?
The MC14021B can drive two low-power TTL loads or one low-power Schottky TTL load over the rated temperature range.
- Is the MC14021B AEC-Q100 qualified?
- What is the quiescent current of the MC14021B?
The quiescent current (IDD) of the MC14021B ranges from 0.005 μA to 0.015 μA.
- What is the total supply current formula for the MC14021B?
The total supply current (IT) can be calculated using the formula: IT = (0.75 μA/kHz) f + IDD, where f is the input frequency and IDD is the quiescent current.
