Overview
The HEF4894BTT-Q100,11 is a 12-stage serial shift-and-store register LED driver produced by Nexperia USA Inc. This integrated circuit is designed to handle serial data input and convert it into parallel output, making it suitable for various applications, particularly in automotive and industrial sectors. The device features a storage latch associated with each stage, allowing data to be strobed from the serial input to the parallel LED driver outputs. It operates within a wide voltage range of 3 V to 15 V and is qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1), ensuring its reliability in harsh environments.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| VDD (Supply Voltage) | 3.0 - 15 | V |
| Operating Temperature | -40 to +125 | °C |
| Maximum Clock Frequency | 28 | MHz |
| Propagation Delay (CP to QS1) | 37 - 90 ns (depending on VDD and load) | ns |
| Output Drive Capability | -20 mA | mA |
| Package Type | TSSOP-20 | |
| Mounting Type | Surface Mount |
Key Features
- 12-stage serial shift-and-store register: Allows for serial data input and parallel output, making it versatile for various applications.
- Storage latch for each stage: Enables data to be strobed from the serial input to the parallel LED driver outputs.
- Wide voltage range compatibility: Operates from 3 V to 15 V, making it suitable for a variety of power supply conditions.
- Cascading capability: Two serial outputs (QS1 and QS2) are available for cascading multiple devices, supporting both high-speed and slow clock rise times.
- AEC Q100 Grade 1 qualified: Ensures reliability and suitability for automotive applications.
- Compact design: Available in TSSOP-20 package, optimizing space in designs.
Applications
The HEF4894BTT-Q100,11 is widely used in various industries due to its robust features and reliability. Key application areas include:
- Automotive electronics: Suitable for use in automotive systems due to its AEC Q100 Grade 1 qualification.
- Industrial control systems: Used in industrial automation and control systems where reliable data transfer and storage are critical.
- LED driver applications: Ideal for driving LEDs in display panels, signage, and other lighting systems.
- Consumer electronics: Found in consumer devices that require efficient and reliable data handling.
Q & A
- What is the primary function of the HEF4894BTT-Q100,11?
The primary function is to act as a 12-stage serial shift-and-store register, converting serial data input into parallel output.
- What is the voltage range for the HEF4894BTT-Q100,11?
The device operates within a voltage range of 3 V to 15 V.
- What is the maximum clock frequency for this device?
The maximum clock frequency is 28 MHz.
- How does the device handle cascading?
The device has two serial outputs (QS1 and QS2) for cascading multiple devices, supporting both high-speed and slow clock rise times.
- What is the package type of the HEF4894BTT-Q100,11?
The device is available in a TSSOP-20 package.
- Is the HEF4894BTT-Q100,11 suitable for automotive applications?
Yes, it is qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1).
- What is the operating temperature range for this device?
The operating temperature range is -40°C to +125°C.
- How many stages does the shift register have?
The shift register has 12 stages.
- What type of outputs does the device have?
The device has open-drain outputs.
- Can unused inputs be left floating?
No, unused inputs must be connected to VDD, VSS, or another input.
