HEF4894BTT-Q100,11

Shift Registers Overview

The HEF4894BTT-Q100,11 is a 12-stage serial shift register with storage latches and open-drain LED driver outputs. It operates within a supply voltage range of 3 V to 15 V. The device features two serial outputs for cascading: QS1 for fast clock rise times and QS2 for slow rise times. It is qualified to AEC-Q100 Grade 1 standards and supports an ambient temperature range from -40 °C to +125 °C. The component utilizes CMOS technology for low power dissipation and high noise immunity.

Shift Registers Feature Summary

• Automotive qualification compliant with AEC-Q100 Grade 1 standard
• Dual serial outputs (QS1 and QS2) enable flexible cascading based on clock signal characteristics
• Open-drain parallel outputs designed specifically for direct LED driving applications

Shift Registers Applications

• Serial-to-parallel data conversion in automotive lighting systems
• LED driver circuits requiring strobe-controlled parallel output
• Cascaded shift register configurations for extended bit depth

Shift Registers Procurement Notes

Verify the specific ordering suffix matches the required package variant. Confirm that the AEC-Q100 Grade 1 qualification aligns with target automotive application requirements. Ensure design margins account for the specified operating temperature range and supply voltage limits defined in the official datasheet.

Shift Registers Selection Notes

Select this component when a 12-bit shift-and-store register with open-drain outputs is required. Consider the TSSOP20 package availability if space constraints dictate a thin shrink small outline form factor. Evaluate the dual serial output options against system clock rise time specifications to determine optimal cascading configuration.

Shift Registers Part Context

This part belongs to the Nexperia HEF4894B-Q100 family of 12-stage shift registers. It shares functional similarities with other members of the series but differs in packaging. The TT suffix indicates the TSSOP20 plastic thin shrink small outline package version, distinct from the SO20 variant.

Shift Registers Replacement Considerations

HEF4894BT-Q100 serves as a pin-compatible alternative utilizing the SO20 package instead of TSSOP20.