CD74HC595M Equivalent & Substitute Parts

Part Overview

The CD74HC595M is an 8-bit shift register with tri-state output manufactured by Texas Instruments in a 16-SOIC surface mount package. This component is classified as discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The shift register functions as a serial-to-parallel converter, commonly used in digital logic circuits requiring output expansion or data serialization.

Key Parameters

Parameter	CD74HC595M Specification
Manufacturer	Texas Instruments
Logic Type	Shift Register
Number of Bits per Element	8
Output Type	Tri-State
Function	Serial to Parallel, Serial
Voltage - Supply	2V ~ 6V
Operating Temperature	-55°C ~ 125°C
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the CD74HC595M is determined by strict equivalence across the following critical parameters:

Logic Type: Shift Register
Number of Bits per Element: 8
Output Type: Tri-State
Function: Serial to Parallel, Serial
Voltage - Supply: 2V ~ 6V
Package / Case: 16-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Substitute parts are grouped into three categories:

Direct Manufacturer Equivalents maintain identical electrical and mechanical specifications with different packaging formats or manufacturer variants.

Manufacturer Recommended Equivalents are factory-designated alternatives that meet all functional requirements and are actively supported by their respective manufacturers.

Parametric Equivalents share core functional parameters but may have minor variations in operating temperature range or other secondary specifications.

Parameter Comparison

Part Number	Manufacturer	Product Status	Operating Temperature	Package / Case	Voltage - Supply	Output Type	MSL
CD74HC595M	Texas Instruments	Discontinued at DiGi Electronics	-55°C ~ 125°C	16-SOIC	2V ~ 6V	Tri-State	1
CD74HC595M96	Texas Instruments	Active	-55°C ~ 125°C	16-SOIC	2V ~ 6V	Tri-State	1
MC74HC595ADR2G	onsemi	Active	-55°C ~ 125°C	16-SOIC	2V ~ 6V	Tri-State	1
MM74HC595M	onsemi	Active	-40°C ~ 85°C	16-SOIC	2V ~ 6V	Tri-State	1
74HC595D,118	Nexperia USA Inc.	Active	-40°C ~ 125°C	16-SOIC	2V ~ 6V	Tri-State	1
74HC595S16-13	Diodes Incorporated	Active	-40°C ~ 125°C	16-SOIC	2V ~ 6V	Tri-State	1
M74HC595YRM13TR	STMicroelectronics	Active	-40°C ~ 125°C	16-SOIC	2V ~ 6V	Tri-State	3
MM74HC595MX	onsemi	Active	-40°C ~ 85°C	16-SOIC	2V ~ 6V	Tri-State	1
MC74HC4094ADG	onsemi	Obsolete	-55°C ~ 125°C	16-SOIC	2V ~ 6V	Tri-State	1
MC74HC595ADG	onsemi	Active	-55°C ~ 125°C	16-SOIC	2V ~ 6V	Tri-State	1

Engineering Selection Recommendations

For Direct Replacement with Extended Temperature Range: CD74HC595M96 (Texas Instruments) is the primary direct equivalent, maintaining identical specifications and active product status. This part is recommended for applications requiring continuity with the original design.

For Active Production with Broad Manufacturer Support: MC74HC595ADR2G (onsemi) and 74HC595D,118 (Nexperia USA Inc.) are actively manufactured alternatives with full compliance to ROHS3 and identical electrical parameters. Both support the complete operating temperature range of -55°C to 125°C or -40°C to 125°C respectively.

For Automotive-Grade Applications: M74HC595YRM13TR (STMicroelectronics) is AEC-Q100 qualified and suitable for automotive environments. Note the MSL rating of 3 (168 Hours) requires appropriate moisture control during storage and handling.

For Cost-Optimized Designs with Reduced Temperature Range: MM74HC595M and MM74HC595MX (onsemi) operate within -40°C to 85°C, suitable for commercial and industrial applications not requiring extended low-temperature performance.

Avoid: MC74HC4094ADG is classified as obsolete and should not be selected for new designs despite parametric equivalence.

Frequently Asked Questions (FAQ)

Q: Can CD74HC595M96 be used as a direct drop-in replacement for CD74HC595M? A: Yes. CD74HC595M96 maintains identical electrical specifications, package dimensions, and pin configuration. The primary difference is packaging format (Cut Tape & Digi-Reel versus Tube) and active product status.

Q: What is the difference between the 74HC595 and 74HC4094 variants? A: Both are 8-bit shift registers with tri-state outputs in 16-SOIC packages. The 74HC4094 is a parametric equivalent with identical functional characteristics. However, MC74HC4094ADG is obsolete and not recommended for new designs.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts meet ROHS3 compliance requirements. M74HC595YRM13TR carries an additional MSL rating of 3 (168 Hours) due to automotive qualification, requiring controlled moisture exposure during storage.

Q: Which substitute part has the widest operating temperature range? A: CD74HC595M96, MC74HC595ADR2G, MC74HC4094ADG, and MC74HC595ADG all support -55°C to 125°C. The original CD74HC595M also operates within this range.

Q: Can I use MM74HC595M in applications requiring -55°C operation? A: No. MM74HC595M and MM74HC595MX are rated only to -40°C minimum. For applications requiring -55°C operation, select CD74HC595M96, MC74HC595ADR2G, or MC74HC595ADG.

Q: Is the 16-SOIC package identical across all substitute parts? A: Yes. All substitute parts use the 16-SOIC package with 0.154" (3.90mm) width, ensuring mechanical compatibility with existing PCB layouts and sockets.

Q: What is the inventory status of these parts? A: CD74HC595M96, MC74HC595ADR2G, and 74HC595D,118 have substantial inventory availability (1,000+ units). Verify current stock with your supplier before design finalization.

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