74HC4051N,652 Equivalent & Substitute Parts

Part Overview

The 74HC4051N,652 is an 8:1 multiplexer/demultiplexer interface IC manufactured by NXP USA Inc., housed in a 16-DIP through-hole package. This part operates with single supply voltage (2V to 10V) or dual supply (±1.5V to 5V), featuring 120Ohm on-state resistance and 51ns/42ns switching times. The device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Multiplexer Configuration	8:1
Number of Circuits	1
On-State Resistance (Max)	120Ohm
Channel-to-Channel Matching (ΔRon)	6Ohm
Voltage - Supply, Single (V+)	2V ~ 10V
Voltage - Supply, Dual (V±)	±1.5V ~ 5V
Switch Time (Ton, Toff) (Max)	51ns, 42ns
-3dB Bandwidth	180MHz
Channel Capacitance (CS(off), CD(off))	4.6pF
Current - Leakage (IS(off)) (Max)	400nA
Operating Temperature	-40°C ~ 125°C
Mounting Type	Through Hole
Package / Case	16-DIP (0.300", 7.62mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the 74HC4051N,652 is determined by the following criteria:

Primary Compatibility Requirements:

Multiplexer configuration: 8:1
Package type: 16-DIP through-hole (for direct PCB compatibility)
Number of circuits: 1
Operating temperature range: minimum -40°C ~ 125°C
Supply voltage compatibility: overlapping single or dual supply ranges

Secondary Compatibility Factors:

On-state resistance tolerance (120Ohm to 240Ohm acceptable for most applications)
Channel-to-channel matching (ΔRon)
Leakage current specifications
Bandwidth performance (180MHz or higher preferred)

Substitutes are grouped into two categories: direct DIP package replacements (maintaining through-hole mounting) and surface-mount alternatives (CD4051 series in 16-SOIC package, requiring PCB redesign).

Parameter Comparison

Part Number	Manufacturer	Multiplexer Config	On-State Resistance (Max)	ΔRon (Max)	V+ Supply	V± Supply	Switch Time Ton/Toff (Max)	-3dB Bandwidth	IS(off) (Max)	Operating Temp	Package	Product Status
74HC4051N,652	NXP USA Inc.	8:1	120Ohm	6Ohm	2V ~ 10V	±1.5V ~ 5V	51ns, 42ns	180MHz	400nA	-40°C ~ 125°C	16-DIP	Obsolete
CD74HC4051E	Texas Instruments	8:1	130Ohm	8.5Ohm	2V ~ 6V	±1V ~ 5V	—	180MHz	400nA	-55°C ~ 125°C	16-DIP	Active
CD4051BE	Texas Instruments	8:1	240Ohm	5Ohm	3V ~ 20V	±2.5V ~ 9V	—	20MHz	100nA	-55°C ~ 125°C	16-DIP	Active
CD4051BEE4	Texas Instruments	8:1	240Ohm	5Ohm	3V ~ 20V	±2.5V ~ 9V	—	20MHz	100nA	-55°C ~ 125°C	16-DIP	Obsolete
CD4051BM96	Texas Instruments	8:1	240Ohm	5Ohm	3V ~ 20V	±2.5V ~ 9V	—	20MHz	100nA	-55°C ~ 125°C	16-SOIC	Active
CD4051BM96G3	Texas Instruments	8:1	240Ohm	5Ohm	3V ~ 20V	±2.5V ~ 9V	—	20MHz	100nA	-55°C ~ 125°C	16-SOIC	Last Time Buy
CD4051BMT	Texas Instruments	8:1	240Ohm	5Ohm	3V ~ 20V	±2.5V ~ 9V	—	20MHz	100nA	-55°C ~ 125°C	16-SOIC	Last Time Buy
MAX4558EPE+	Analog Devices Inc./Maxim Integrated	8:1	160Ohm	2Ohm	2V ~ 12V	±2V ~ 6V	150ns, 120ns	—	1nA	-40°C ~ 85°C	16-DIP	Active
MAX4581CPE+	Analog Devices Inc./Maxim Integrated	8:1	80Ohm	1Ohm	2V ~ 12V	±2V ~ 6V	200ns, 100ns	—	1nA	0°C ~ 70°C	16-DIP	Active

Engineering Selection Recommendations

For Direct DIP Package Replacement (No PCB Redesign):

CD74HC4051E (Texas Instruments) is the primary direct substitute. It maintains 16-DIP through-hole packaging, 8:1 multiplexer configuration, and active product status. The 130Ohm on-state resistance is within acceptable tolerance of the original 120Ohm specification. Operating temperature range extends to -55°C, exceeding the original -40°C minimum. This part is ROHS3 compliant and REACH unaffected, matching the original compliance profile.

MAX4558EPE+ (Analog Devices Inc./Maxim Integrated) provides an alternative DIP package option with superior performance characteristics: 160Ohm on-state resistance, tighter channel matching (2Ohm vs. 6Ohm), and lower leakage current (1nA vs. 400nA). However, the upper operating temperature limit is 85°C, which is lower than the original 125°C specification. This part is suitable for applications with operating temperature requirements up to 85°C.

MAX4581CPE+ offers the lowest on-state resistance (80Ohm) and tightest matching (1Ohm), but is limited to 0°C to 70°C operating range, making it unsuitable for extended temperature applications.

For Surface-Mount Conversion (PCB Redesign Required):

CD4051BM96 (Texas Instruments, Active status) is the recommended surface-mount alternative in 16-SOIC package. It provides the same electrical specifications as CD4051BE with active product status and highest inventory availability (155,100 pcs). ROHS3 compliance and REACH unaffected status are maintained.

CD4051BMT and CD4051BM96G3 are functionally equivalent but carry Last Time Buy status, indicating limited future availability.

Compliance and Certification:

All recommended substitutes maintain ROHS3 compliance and REACH unaffected status, consistent with the original part. Moisture sensitivity level (MSL) is 1 (Unlimited) for all surface-mount variants, indicating no special handling requirements.

Frequently Asked Questions (FAQ)

Q: Can I use CD4051BE as a direct replacement for 74HC4051N,652?

A: CD4051BE is electrically compatible but requires PCB redesign. The original part uses 16-DIP through-hole packaging, while CD4051BE is available in 16-DIP (CD4051BE) or 16-SOIC (CD4051BM96) packages. The 16-DIP version (CD4051BE) can be used without PCB modification if the footprint is compatible. However, CD4051BE has lower bandwidth (20MHz vs. 180MHz) and different supply voltage ranges (3V ~ 20V single supply vs. 2V ~ 10V), which may affect high-frequency applications.

Q: What is the difference between CD4051BM96, CD4051BM96G3, and CD4051BMT?

A: All three parts are functionally identical 8:1 multiplexers in 16-SOIC surface-mount package with 240Ohm on-state resistance. The differences are in packaging format and product status: CD4051BM96 is in Cut Tape & Digi-Reel format (Active status), CD4051BM96G3 is in Tape & Reel format (Last Time Buy), and CD4051BMT is in Tape & Reel format (Last Time Buy). For new designs, CD4051BM96 is preferred due to active status and higher availability.

Q: Is MAX4558EPE+ suitable for my application requiring -40°C to 125°C operation?

A: No. MAX4558EPE+ is rated only to 85°C maximum operating temperature, which does not meet the full -40°C to 125°C requirement of the original 74HC4051N,652. For extended temperature range applications, use CD74HC4051E or CD4051BE, both rated to -55°C to 125°C.

Q: What are the key electrical differences between the substitute parts?

A: On-state resistance varies from 80Ohm (MAX4581CPE+) to 240Ohm (CD4051 series). Channel-to-channel matching ranges from 1Ohm (MAX4581CPE+) to 8.5Ohm (CD74HC4051E). Leakage current is significantly lower in MAX series (1nA) compared to CD4051 series (100nA) and original part (400nA). Bandwidth performance is highest in the original and CD74HC4051E (180MHz) versus CD4051 series (20MHz). These differences affect signal integrity in high-frequency applications and power consumption in low-leakage designs.

Q: Can I use surface-mount CD4051BM96 in place of through-hole 74HC4051N,652?

A: No, not without PCB redesign. CD4051BM96 uses 16-SOIC surface-mount package, requiring different PCB footprint and assembly process. For direct through-hole replacement without PCB modification, use CD74HC4051E or CD4051BE in 16-DIP package.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All recommended substitute parts (CD74HC4051E, CD4051BE, CD4051BM96, MAX4558EPE+, MAX4581CPE+) are ROHS3 compliant and REACH unaffected, matching the compliance profile of the original 74HC4051N,652.

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