SN74HC594D Equivalent & Substitute Parts

Part Overview

The SN74HC594D is an 8-bit shift register logic IC manufactured by Texas Instruments, housed in a 16-SOIC surface mount package. This component functions as a serial-to-parallel converter, accepting serial input data and converting it to parallel output format. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing design requirements and production needs.

Substiute Parts

SN74HC594D

Texas InstrumentsIn Stock: 150947SN74HC594D Datasheet

Current PartRFQ

SN74HC594DR

Texas InstrumentsIn Stock: 3844SN74HC594DR Datasheet

DirectRFQ

74HC594D,112

Nexperia USA Inc.In Stock: 119274HC594D,112 Datasheet

UpgradeRFQ

74HC594D,118

Nexperia USA Inc.In Stock: 2824374HC594D,118 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SN74HC594D is determined by strict equivalence across the following critical parameters:

• Logic Function: Serial-to-parallel shift register operation
• Bit Configuration: 1 element, 8 bits per element
• Output Type: Push-Pull output stage
• Supply Voltage Range: 2V ~ 6V compatibility
• Package Type: 16-SOIC surface mount form factor
• Electrical Compliance: ROHS3 compliance and EAR99 classification

Substitute parts must maintain identical or superior operating temperature ranges and preserve all functional characteristics. Packaging format (Cut Tape, Tube, or Tape & Reel) does not affect electrical equivalence but impacts procurement and handling.

Parameter Comparison

Engineering Selection Recommendations

SN74HC594DR is the primary direct substitute from Texas Instruments. This part maintains identical electrical specifications and package configuration while offering active product status and higher current inventory availability. Selection of this part eliminates any manufacturer transition concerns.

74HC594D,118 (Nexperia USA Inc.) is the recommended alternative when Texas Instruments sourcing is constrained. This part is currently active with substantial inventory (28,149 units), offers extended operating temperature range (-40°C ~ 125°C), and maintains full ROHS3 compliance. The Nexperia part is supplied on Tape & Reel, suitable for automated assembly processes.

74HC594D,112 (Nexperia USA Inc.) is classified as obsolete and should be selected only when existing design documentation or legacy system requirements mandate Nexperia sourcing. This part carries lower inventory levels (1,110 units) and is supplied in Tube packaging.

All three substitute parts satisfy the core electrical and mechanical requirements for direct replacement in applications currently using the SN74HC594D.

Frequently Asked Questions (FAQ)

Q: Can SN74HC594DR be used as a direct replacement for SN74HC594D?

A: Yes. SN74HC594DR is electrically and mechanically equivalent to SN74HC594D. Both are manufactured by Texas Instruments, share identical supply voltage range (2V ~ 6V), operating temperature range (-40°C ~ 85°C), and 16-SOIC package configuration. The primary difference is packaging format (Cut Tape & Digi-Reel vs. standard packaging) and active product status.

Q: What is the difference between the Nexperia parts (74HC594D,112 and 74HC594D,118)?

A: Both Nexperia parts maintain the same 8-bit shift register function, supply voltage, and 16-SOIC package. The key differences are: 74HC594D,112 is obsolete with Tube packaging, while 74HC594D,118 is active with Tape & Reel packaging. The 74HC594D,118 offers superior availability and is the preferred Nexperia option.

Q: Do the substitute parts support the same operating temperature range?

A: The SN74HC594DR maintains the original -40°C ~ 85°C range. Both Nexperia parts (74HC594D,112 and 74HC594D,118) extend this to -40°C ~ 125°C, providing enhanced thermal performance for demanding applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. SN74HC594DR, 74HC594D,112, and 74HC594D,118 are all ROHS3 compliant with MSL rating of 1 (Unlimited), matching the original SN74HC594D specifications.

Q: What packaging formats are available for these substitutes?

A: SN74HC594DR is supplied in Cut Tape (CT) & Digi-Reel format. 74HC594D,112 is supplied in Tube packaging. 74HC594D,118 is supplied in Tape & Reel (TR) format. Selection depends on procurement and assembly process requirements.