74AHC594DB,118

Shift Registers Overview

The 74AHC594DB,118 is an 8-bit serial-in, parallel-out shift register with a storage register, manufactured by Nexperia USA Inc. It operates within a supply voltage range of 2.0 V to 5.5 V and features balanced propagation delays. The device includes independent clocks for the shift and storage registers, along with direct overriding clears. It utilizes Schmitt-trigger inputs for high noise immunity and overvoltage tolerance up to 5.5 V. The component is housed in a SO16 plastic small outline package (SOT109-1) and supports operation from -40 °C to +125 °C.

Shift Registers Feature Summary

• 8-bit non-inverting serial-in, parallel-out shift register architecture feeding an 8-bit D-type storage register
• Independent positive-edge triggered clocks (SHCP and STCP) and direct overriding clear inputs (SHR and STR)
• Schmitt-trigger action on all inputs providing high noise immunity and overvoltage tolerance to 5.5 V
• CMOS low power dissipation with latch-up performance exceeding 100 mA per JESD 78 Class II Level A

Shift Registers Applications

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

Shift Registers Procurement Notes

Verify the specific ordering suffix

Shift Registers Selection Notes

Select this part when an 8-bit shift register with separate storage output is required. Ensure the design accommodates the SO16 package dimensions and thermal characteristics. Confirm that the system logic levels align with the CMOS input specifications for the 74AHC series. Verify that the operating temperature range meets the application requirements of -40 °C to +125 °C.

Shift Registers Part Context

This component belongs to the 74AHC594 family of high-speed Si-gate CMOS devices. It is pin-compatible with Low-Power Schottky TTL (LSTTL). The datasheet revision history indicates that previous versions included SSOP16 variants (74AHC594DB), which were removed in later revisions. The current documentation specifies the SO16 package for the 'D' suffix designation.

Shift Registers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.