Overview
The HEF4894BT-Q100, manufactured by Nexperia, is a 12-stage serial shift register with a storage latch associated with each stage. This component is designed to strobe data from the serial input (D) to the parallel LED driver outputs (QP0 to QP11). Data is shifted on positive-going clock (CP) transitions, and the data in each shift register stage is transferred to the storage register when the strobe (STR) input is HIGH. The output enable (OE) input signal controls the appearance of data in the storage register at the output.
This device is particularly useful for applications requiring high-speed data transfer and cascading capabilities, with two serial outputs (QS1 and QS2) available for cascading multiple HEF4894BT-Q100 devices. It operates over a wide supply voltage range of 3 V to 15 V and is qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1), making it suitable for automotive and other demanding applications.
Key Specifications
| Type Number | VDD (V) | Logic Switching Levels | Output Drive Capability (mA) | tpd (ns) | fmax (MHz) | Power Dissipation Considerations | Tamb (°C) | Package |
|---|---|---|---|---|---|---|---|---|
| HEF4894BT-Q100 | 3.0 - 15 | CMOS | -20 | 45 | 28 | Medium | -40 to +85 | SO20 (SOT163-1) |
Key Features
- Automotive product qualification in accordance with AEC-Q100 (Grade 1)
- Specified from -40 °C to +85 °C and from -40 °C to +125 °C
- Wide supply voltage range from 3.0 V to 15.0 V
- CMOS low power dissipation
- High noise immunity
- Fully static operation
- Standardized symmetrical output characteristics
- Complies with JEDEC standard JESD 13-B
- ESD protection: HBM ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, CDM ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V
Applications
The HEF4894BT-Q100 is suitable for a variety of applications, particularly in the automotive sector due to its AEC-Q100 (Grade 1) qualification. It is also used in industrial, mobile, and consumer electronics where high-speed data transfer and reliable operation over a wide temperature range are required.
- Automotive systems
- Industrial control systems
- LED display drivers
- High-speed data transfer systems
Q & A
- What is the primary function of the HEF4894BT-Q100?
The HEF4894BT-Q100 is a 12-stage serial shift register with a storage latch associated with each stage, designed to strobe data from the serial input to the parallel LED driver outputs.
- What is the operating voltage range of the HEF4894BT-Q100?
The device operates over a recommended VDD power supply range of 3 V to 15 V referenced to VSS (usually ground).
- How does the data transfer work in the HEF4894BT-Q100?
Data is shifted on positive-going clock (CP) transitions, and the data in each shift register stage is transferred to the storage register when the strobe (STR) input is HIGH.
- What are the temperature specifications for the HEF4894BT-Q100?
The device is specified from -40 °C to +85 °C and from -40 °C to +125 °C.
- What kind of ESD protection does the HEF4894BT-Q100 have?
The device has ESD protection: HBM ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, and CDM ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V.
- Can the HEF4894BT-Q100 be cascaded with other devices?
Yes, two serial outputs (QS1 and QS2) are available for cascading multiple HEF4894BT-Q100 devices.
- What is the package type of the HEF4894BT-Q100?
The device is available in an SO20 (SOT163-1) package.
- Is the HEF4894BT-Q100 suitable for automotive applications?
Yes, it is qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1) and is suitable for use in automotive applications.
- What are the key benefits of using the HEF4894BT-Q100?
The key benefits include CMOS low power dissipation, high noise immunity, fully static operation, and standardized symmetrical output characteristics.
- How do I handle unused inputs on the HEF4894BT-Q100?
Unused inputs must be connected to VDD, VSS, or another input.
- What standards does the HEF4894BT-Q100 comply with?
The device complies with JEDEC standard JESD 13-B.
