BU4052BCFV-E2 Equivalent & Substitute Parts

Part Overview

The BU4052BCFV-E2 is a 2-circuit SP4T analog switch IC manufactured by Rohm Semiconductor, designed for signal routing and multiplexing applications. This 16-SSOP surface mount device operates across a supply voltage range of 3V to 18V with a maximum on-state resistance of 160Ohm per channel. The part is currently in active production status with substantial inventory availability (29,654 units in stock).

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when alternative manufacturers offer improved electrical characteristics, or when design requirements necessitate different performance parameters such as lower on-state resistance, faster switching times, or extended temperature ranges.

Key Parameters

Parameter	BU4052BCFV-E2 Value
Switch Circuit Configuration	SP4T (Single Pole, 4-Throw)
Number of Circuits	2
Multiplexer/Demultiplexer Circuit	4:1
On-State Resistance (Max)	160Ohm
Voltage - Supply, Single (V+)	3V ~ 18V
Channel Capacitance (CS(off), CD(off))	10pF
Current - Leakage (IS(off)) (Max)	300nA
Operating Temperature	-40°C ~ 85°C
Package / Case	16-LSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution compatibility for the BU4052BCFV-E2 is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Switch circuit configuration: SP4T
Number of circuits: 2
Multiplexer/Demultiplexer circuit: 4:1
Package footprint: 16-pin TSSOP or LSSOP (0.173", 4.40mm Width)
Mounting type: Surface Mount
Supply voltage range: Must encompass or be compatible with 3V ~ 18V operation

Performance Parameters Affecting Substitution:

On-state resistance (lower values improve signal integrity)
Operating temperature range (extended ranges provide design flexibility)
Channel capacitance (affects high-frequency performance)
Leakage current (impacts low-signal applications)
Switching speed (when specified)

Substitute parts are grouped by manufacturer and product status. Parts with lower on-state resistance, wider temperature ranges, or faster switching characteristics represent performance improvements. Parts with obsolete or last-time-buy status require inventory planning consideration.

Parameter Comparison

Part Number	Manufacturer	On-State Resistance (Max)	Voltage - Supply, Single (V+)	Operating Temperature	Package	Product Status	Inventory (Pcs)
BU4052BCFV-E2	Rohm Semiconductor	160Ohm	3V ~ 18V	-40°C ~ 85°C	16-LSSOP	Active	29,654
74HC4052PW,118	Nexperia USA Inc.	150Ohm	2V ~ 10V	-40°C ~ 125°C	16-TSSOP	Active	2,200
74HCT4052PW,118	Nexperia USA Inc.	150Ohm	4.5V ~ 5.5V	-40°C ~ 125°C	16-TSSOP	Active	1,621
CD74HC4052PW	Texas Instruments	130Ohm	2V ~ 6V	-55°C ~ 125°C	16-TSSOP	Last Time Buy	2,600
CD74HC4052PWR	Texas Instruments	130Ohm	2V ~ 6V	-55°C ~ 125°C	16-TSSOP	Active	35,100
CD74HC4052PWRG4	Texas Instruments	130Ohm	2V ~ 6V	-55°C ~ 125°C	16-TSSOP	Obsolete	3,396
CD74HC4052PWT	Texas Instruments	130Ohm	2V ~ 6V	-55°C ~ 125°C	16-TSSOP	Last Time Buy	3,466
MC74HC4052ADTG	onsemi	100Ohm	2V ~ 6V	-55°C ~ 125°C	16-TSSOP	Obsolete	1,066
MC74VHC4052DTR2G	onsemi	100Ohm	2V ~ 6V	-55°C ~ 125°C	16-TSSOP	Active	3,413

Engineering Selection Recommendations

Primary Substitutes (Active Status, Recommended for New Designs):

CD74HC4052PWR (Texas Instruments) is the preferred substitute when extended temperature range (-55°C ~ 125°C) and improved on-state resistance (130Ohm) are required. This part maintains ROHS3 compliance and unlimited MSL rating. High inventory availability (35,100 units) ensures supply continuity.

74HC4052PW,118 (Nexperia USA Inc.) provides an alternative with 150Ohm on-state resistance and extended temperature range (-40°C ~ 125°C). This part is suitable for applications where the 2V ~ 10V supply range is compatible with system requirements.

MC74VHC4052DTR2G (onsemi) offers the lowest on-state resistance (100Ohm) among active parts, with extended temperature range and dual supply capability (±2V ~ 6V). This part is appropriate for low-impedance signal routing applications.

Secondary Substitutes (Last Time Buy or Obsolete Status):

CD74HC4052PW and CD74HC4052PWT (Texas Instruments) are designated Last Time Buy. These parts should be used only when existing inventory commitments require continuation or when design validation has been completed with these specific part numbers.

CD74HC4052PWRG4 (Texas Instruments) and MC74HC4052ADTG (onsemi) are obsolete. Selection of these parts requires justification based on existing design lock-in or inventory management strategies.

Supply Voltage Compatibility Consideration:

The BU4052BCFV-E2 operates across 3V ~ 18V. Most substitute parts operate within narrower ranges (2V ~ 10V or 2V ~ 6V). Design verification is required to confirm that the selected substitute's supply voltage range is compatible with the application's power distribution architecture.

Frequently Asked Questions (FAQ)

Q: Can I directly replace BU4052BCFV-E2 with any of these substitute parts?

A: Direct replacement requires verification of three factors: (1) supply voltage range compatibility with your application, (2) on-state resistance tolerance for your signal path impedance requirements, and (3) package footprint compatibility on your PCB. The 16-LSSOP and 16-TSSOP packages have identical pin pitch and footprint dimensions but may differ in lead frame design. Consult PCB layout guidelines for your specific package variant.

Q: What is the difference between 74HC4052 and 74HCT4052?

A: The 74HCT4052PW,118 variant is optimized for TTL-level input compatibility with a narrower supply voltage range (4.5V ~ 5.5V). The 74HC4052PW,118 accepts CMOS-level inputs across a wider supply range (2V ~ 10V). Select 74HCT4052 only when your system uses 5V TTL logic levels exclusively.

Q: Why do some parts show "Last Time Buy" or "Obsolete" status?

A: Last Time Buy status indicates the manufacturer has announced end-of-life production. Existing inventory may be available, but no new manufacturing runs are planned. Obsolete parts are no longer manufactured or supported. These designations require long-term supply planning and consideration of active alternatives for new designs.

Q: How does on-state resistance affect my circuit design?

A: On-state resistance (Ron) determines the voltage drop across the switch when conducting signal current. Lower Ron values reduce signal attenuation and power dissipation. The BU4052BCFV-E2 specifies 160Ohm maximum; substitute parts range from 100Ohm to 150Ohm. For high-frequency or low-impedance applications, lower Ron values (100Ohm ~ 130Ohm) are preferred.

Q: Are all these parts RoHS3 compliant?

A: Yes. All listed parts carry ROHS3 Compliant certification and unlimited Moisture Sensitivity Level (MSL 1) rating, meeting current environmental and reliability standards for industrial and commercial applications.

Q: What is the significance of the -3dB bandwidth specification?

A: The -3dB bandwidth indicates the frequency at which the switch's signal attenuation reaches 3dB. Higher bandwidth values (180MHz ~ 185MHz for substitute parts) support faster signal transitions and higher-frequency multiplexing applications. The BU4052BCFV-E2 does not specify this parameter, indicating it is optimized for lower-frequency applications.

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