SN74HC165QDREP Equivalent & Substitute Parts

Part Overview

The SN74HC165QDREP is an 8-bit parallel-load shift register manufactured by Texas Instruments, housed in a 16-SOIC surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The shift register functions as a parallel or serial to serial converter, operating across a 2V to 6V supply voltage range with an operating temperature span of -40°C to 125°C. Identifying compatible alternatives ensures design flexibility and supply chain resilience.

Key Parameters

Parameter	Value
Logic Type	Shift Register
Number of Elements	1
Number of Bits per Element	8
Function	Parallel or Serial to Serial
Output Type	Complementary
Voltage - Supply	2V ~ 6V
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	16-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the SN74HC165QDREP is determined by strict equivalence across the following parameters: Logic Type (Shift Register), Number of Elements (1), Number of Bits per Element (8), Function (Parallel or Serial to Serial), Output Type (Complementary), Voltage Supply Range (2V ~ 6V), Operating Temperature Range (-40°C ~ 125°C), Mounting Type (Surface Mount), and Package Type (16-SOIC). All substitute parts listed maintain these core electrical and mechanical specifications. Packaging format variations (Cut Tape, Tape & Reel, Tube) do not affect functional equivalence. Substitute parts are grouped by manufacturer and product status to facilitate selection based on availability and supply chain requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Logic Type	Bits per Element	Function	Voltage Supply	Operating Temp	Package	Product Status	Inventory (Pcs)
SN74HC165QDREP	Texas Instruments	Shift Register	8	Parallel or Serial to Serial	2V ~ 6V	-40°C ~ 125°C	16-SOIC	Obsolete	1036
SN74HC165DR	Texas Instruments	Shift Register	8	Parallel or Serial to Serial	2V ~ 6V	-40°C ~ 125°C	16-SOIC	Active	5400
SN74HC165DRG3	Texas Instruments	Shift Register	8	Parallel or Serial to Serial	2V ~ 6V	-40°C ~ 125°C	16-SOIC	Active	3496
SN74HC165DT	Texas Instruments	Shift Register	8	Parallel or Serial to Serial	2V ~ 6V	-40°C ~ 125°C	16-SOIC	Discontinued at DiGi Electronics	12599
SN74HC165QDRQ1	Texas Instruments	Shift Register	8	Parallel or Serial to Serial	2V ~ 6V	-40°C ~ 125°C	16-SOIC	Active	7700
MC74HC165ADR2G	onsemi	Shift Register	8	Parallel or Serial to Serial	2V ~ 6V	-55°C ~ 125°C	16-SOIC	Active	305100
NLV74HC165ADR2G	onsemi	Shift Register	8	Parallel or Serial to Serial	2V ~ 6V	-55°C ~ 125°C	16-SOIC	Obsolete	30100
MC74HC165ADG	onsemi	Shift Register	8	Parallel or Serial to Serial	2V ~ 6V	-55°C ~ 125°C	16-SOIC	Active	5624
74HC165D,653	Nexperia USA Inc.	Shift Register	8	Parallel or Serial to Serial	2V ~ 6V	-40°C ~ 125°C	16-SOIC	Active	351671
74HC165D-Q100,118	Nexperia USA Inc.	Shift Register	8	Parallel or Serial to Serial	2V ~ 6V	-40°C ~ 125°C	16-SOIC	Active	990

Engineering Selection Recommendations

For applications requiring immediate component availability, SN74HC165DR and SN74HC165DRG3 from Texas Instruments are active products with established supply. The SN74HC165QDRQ1 variant offers automotive-grade qualification (AEC-Q100) for applications requiring automotive compliance. onsemi alternatives MC74HC165ADR2G and MC74HC165ADG provide extended lower operating temperature range (-55°C minimum) and are available in high inventory quantities. The Nexperia 74HC165D,653 variant offers the highest inventory availability (351,671 pcs) for high-volume production requirements. All listed substitutes maintain ROHS3 compliance and MSL Level 1 rating. Selection should prioritize active product status and supply chain availability aligned with production timelines.

Frequently Asked Questions (FAQ)

Q: Can SN74HC165DR directly replace SN74HC165QDREP? A: Yes. Both parts maintain identical electrical specifications: 8-bit shift register function, 2V to 6V supply voltage, -40°C to 125°C operating temperature range, and 16-SOIC package. The primary difference is product status; SN74HC165DR is active while SN74HC165QDREP is obsolete.

Q: What is the difference between SN74HC165DRG3 and SN74HC165DR? A: Both are functionally equivalent 8-bit shift registers in 16-SOIC packages from Texas Instruments. SN74HC165DRG3 is supplied in Tape & Reel format, while SN74HC165DR is available in Cut Tape and Digi-Reel packaging. Electrical performance is identical.

Q: Are onsemi MC74HC165ADR2G and MC74HC165ADG interchangeable with Texas Instruments parts? A: Yes, for standard operating conditions. Both onsemi variants maintain the core 8-bit shift register specifications and 16-SOIC package. The MC74HC165ADR2G and MC74HC165ADG support an extended lower temperature range (-55°C minimum versus -40°C), making them suitable for wider temperature applications.

Q: Does the Nexperia 74HC165D-Q100,118 variant offer any advantages? A: The 74HC165D-Q100,118 is qualified to AEC-Q100 automotive standards, making it suitable for automotive applications. It maintains all core shift register specifications and 16-SOIC packaging. Inventory availability is limited (990 pcs) compared to the standard 74HC165D,653 variant (351,671 pcs).

Q: What packaging formats are available for 74HC165 shift registers? A: Substitute parts are available in Cut Tape (CT) & Digi-Reel, Tape & Reel (TR), and Tube formats. All packaging variants contain functionally identical components; packaging selection is determined by production assembly requirements and handling preferences.

Q: Are all listed substitutes ROHS3 compliant? A: Yes. All substitute parts listed maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with modern manufacturing and environmental standards.

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