CD74HC597M96E4 Equivalent & Substitute Parts

Part Overview

The CD74HC597M96E4 is an 8-bit shift register logic IC manufactured by Texas Instruments in a 16-SOIC surface mount package. This component functions as a parallel or serial to serial converter, commonly used in data acquisition and signal processing applications. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications. Substitute parts must maintain identical electrical specifications, package compatibility, and functional characteristics to ensure seamless integration into existing designs.

Key Parameters

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

Substitute Part Grouping Explanation

Substitution for the CD74HC597M96E4 is determined by strict equivalence across the following critical parameters:

Logic Type: Shift Register
Number of Bits per Element: 8
Output Type: Push-Pull
Voltage Supply Range: 2V to 6V
Package / Case: 16-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

All substitute parts listed maintain these specifications. Variations in product status, packaging format (Cut Tape, Tape & Reel, Tube), and manufacturer do not affect functional compatibility when these core parameters remain constant.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Logic Type	Bits per Element	Output Type	Voltage Supply	Operating Temp	Package	Product Status
CD74HC597M96E4	Texas Instruments	Shift Register	8	Push-Pull	2V - 6V	-55°C to 125°C	16-SOIC	Discontinued
CD74HC166M96	Texas Instruments	Shift Register	8	Push-Pull	2V - 6V	-55°C to 125°C	16-SOIC	Active
CD74HC597M96	Texas Instruments	Shift Register	8	Push-Pull	2V - 6V	-55°C to 125°C	16-SOIC	Active
CD74HC597MT	Texas Instruments	Shift Register	8	Push-Pull	2V - 6V	-55°C to 125°C	16-SOIC	Last Time Buy
74HC597D,653	Nexperia USA Inc.	Shift Register	8	Push-Pull	2V - 6V	-40°C to 125°C	16-SOIC	Active
MC74HC597ADG	onsemi	Shift Register	8	Push-Pull	2V - 6V	-55°C to 125°C	16-SOIC	Active
MC74HC597ADR2G	onsemi	Shift Register	8	Push-Pull	2V - 6V	-55°C to 125°C	16-SOIC	Active

Engineering Selection Recommendations

For applications requiring the CD74HC597M96E4, the following substitutes are ranked by availability and product status:

Primary Substitutes (Active Status, Full Inventory):

MC74HC597ADR2G (onsemi): 32,620 units in stock. Active product status with full temperature range support (-55°C to 125°C). Tape & Reel packaging suitable for high-volume production.
CD74HC597M96 (Texas Instruments): 74,275 units in stock. Active product status with identical specifications. Cut Tape & Digi-Reel packaging options available.
MC74HC597ADG (onsemi): 1,769 units in stock. Active product status with full temperature range. Tube packaging suitable for lower-volume applications.

Secondary Substitutes (Limited Availability or Status Constraints):

74HC597D,653 (Nexperia USA Inc.): 30,500 units in stock. Active product status. Operating temperature range limited to -40°C to 125°C (narrower than original -55°C to 125°C). Suitable for applications not requiring extended low-temperature operation.
CD74HC597MT (Texas Instruments): 6,990 units in stock. Last Time Buy status indicates limited future availability. Tape & Reel packaging.
CD74HC166M96 (Texas Instruments): 2,370 units in stock. Active product status. Note: This part implements a different shift register function (parallel or serial to serial with high-speed capability) and should be evaluated for functional compatibility with the original design.

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and identical package specifications (16-SOIC, 0.154" width, 3.90mm).

Frequently Asked Questions (FAQ)

Q: Can CD74HC166M96 be used as a direct replacement for CD74HC597M96E4? A: CD74HC166M96 maintains all critical electrical and package parameters (16-SOIC, 2V-6V supply, -55°C to 125°C operation, 8-bit shift register, push-pull output). However, the functional implementation differs. Verify that the specific shift register operation required by your design is compatible with the CD74HC166M96 before substitution.

Q: What is the difference between packaging formats (Cut Tape, Tape & Reel, Tube)? A: Packaging format affects handling and assembly processes but does not impact electrical or functional performance. Cut Tape & Digi-Reel is standard for automated pick-and-place assembly. Tape & Reel is optimized for high-volume production. Tube packaging is suitable for manual assembly or lower-volume applications. Select based on your manufacturing process requirements.

Q: Why does 74HC597D,653 have a narrower operating temperature range? A: The 74HC597D,653 from Nexperia is specified for -40°C to 125°C operation, compared to the original -55°C to 125°C. This part is suitable for applications operating within the -40°C to 125°C range. If your design requires operation below -40°C, select MC74HC597ADR2G, MC74HC597ADG, or CD74HC597M96 instead.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, matching the original CD74HC597M96E4 specifications.

Q: Which substitute offers the best long-term availability? A: MC74HC597ADR2G (onsemi) and CD74HC597M96 (Texas Instruments) both carry Active product status with substantial inventory levels (32,620 and 74,275 units respectively), ensuring long-term availability. CD74HC597MT is designated Last Time Buy, indicating limited future supply.

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