74AHC594DB-Q100J

Shift Registers Overview

The Nexperia 74AHC594DB-Q100J is an automotive-grade, high-speed Si-gate CMOS 8-bit shift register with an output storage register. It operates within a supply voltage range of 2.0 V to 5.5 V and features Schmitt-trigger inputs for noise immunity. The device includes independent clocks (SHCP and STCP) and direct overriding clears for both the shift and storage registers. It is housed in a SO16 plastic small outline package (SOT109-1) and complies with AEC-Q100 Grade 1 standards.

Shift Registers Feature Summary

• Automotive qualification compliant with AEC-Q100 Grade 1 standards
• Independent clocking and clearing functions for shift and storage registers
• Schmitt-trigger inputs providing high noise immunity
• Overvoltage tolerant inputs up to 5.5 V

Shift Registers Applications

• Serial-to-parallel data conversion
• Remote control holding register

Shift Registers Procurement Notes

Verify the specific suffix 'J' against the manufacturer's current ordering information to confirm package variant and temperature grade specifications. Ensure the selected component matches the required SO16 (SOT109-1) footprint and lead-free compliance requirements for the target assembly process.

Shift Registers Selection Notes

Select this component when an 8-bit serial-in parallel-out shift register with separate storage capabilities is required for automotive environments. The AHC logic family supports wide voltage ranges, while the DHVQFN or SO packages offer distinct thermal and spatial advantages depending on board layout constraints.

Shift Registers Part Context

This part belongs to the 74AHC594-Q100 series, which integrates an 8-bit shift register feeding an 8-bit D-type storage register. The series is pin-compatible with Low-Power Schottky TTL (LSTTL). The 'D' designation indicates the SO16 package type, while the 'BQ' and 'PW' variants correspond to DHVQFN and TSSOP packages respectively.

Shift Registers Replacement Considerations

The datasheet revision history notes that the SSOP16 variant (74AHC594DB-Q100) was removed from production. Verify if alternative package types such as the 74AHC594D-Q100 (SO16) or 74AHC594BQ-Q100 (DHVQFN16) are suitable substitutes based on mechanical fit.