HEF4894BTT,112

Shift Registers Overview

The HEF4894BTT,112 is a 12-stage serial shift register with storage latches and open-drain LED driver outputs. It operates on a 3 V to 15 V supply within a -40 °C to +125 °C temperature range. The device features two serial outputs (QS1 and QS2) for cascading. Propagation delays from clock to output range from 37 ns to 320 ns depending on load capacitance and voltage. Maximum clock frequency reaches 28 MHz at 15 V.

Shift Registers Feature Summary

• Includes storage latches for strobing data from serial input to parallel outputs
• Provides dual serial outputs for cascading with fast or slow clock rise times
• Features open-drain outputs suitable for direct LED driving
• Complies with JEDEC JESD 13-B standard

Shift Registers Applications

• Serial-to-parallel data conversion
• LED driver circuits
• Cascaded digital systems

Shift Registers Procurement Notes

Verify the specific ordering suffix matches the required package type. Confirm that the component meets RoHS compliance standards. Check the latest product status to ensure availability. Validate operating conditions against application requirements before procurement.

Shift Registers Selection Notes

Select this part for applications requiring 12-bit shift registers with parallel storage. Ensure the design supports open-drain outputs and appropriate pull-up resistors. Verify power supply stability within the specified voltage range. Consider thermal dissipation limits for high-density layouts.

Shift Registers Part Context

This component belongs to the HEF4894B family of 12-stage shift-and-store registers. It utilizes CMOS technology for low power dissipation. The TTSOP20 package variant offers a compact footprint for surface-mount assembly.

Shift Registers Replacement Considerations

HEF4894BT,112 serves as a pin-compatible alternative using an SOIC-20 package.