PI3B3384LE Equivalent & Substitute Parts

Part Overview

The PI3B3384LE is a Bus Switch 5 x 1:1 logic IC manufactured by Diodes Incorporated in 24-TSSOP packaging. This component functions as a low-voltage bus switch for signal routing and multiplexing applications. The part is currently obsolete, making equivalent substitute parts necessary for ongoing design support, production continuity, and component sourcing.

Key Parameters

Parameter	Value
Manufacturer Part Number	PI3B3384LE
Manufacturer	Diodes Incorporated
Type	Bus Switch
Circuit Configuration	5 x 1:1
Independent Circuits	2
Voltage Supply Range	3V ~ 3.6V
Operating Temperature Range	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	24-TSSOP (0.173", 4.40mm Width)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the PI3B3384LE is determined by the following critical parameters:

Functional Equivalence: All substitute parts maintain the same 5 x 1:1 bus switch circuit configuration with 2 independent circuits, ensuring functional compatibility at the application level.

Voltage Supply Compatibility: The PI3B3384LE operates at 3V ~ 3.6V. All substitute parts operate at 2.3V ~ 3.6V, providing backward compatibility with the original voltage range while offering extended lower-voltage operation capability.

Operating Temperature Range: All substitute parts maintain the -40°C ~ 85°C operating temperature range, ensuring thermal compatibility across industrial and commercial applications.

Mounting and Packaging: Substitutes are available in equivalent surface-mount packages (24-TSSOP, 24-QSOP, 24-SSOP, 24-TVSOP) with identical or compatible footprints and pin configurations.

Compliance and Certification: All substitute parts are ROHS3 compliant and REACH unaffected, maintaining regulatory compliance requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Circuit	Voltage Supply	Operating Temp	Package / Case	Product Status	RoHS Status	MSL
PI3B3384LE	Diodes Incorporated	5 x 1:1	3V ~ 3.6V	-40°C ~ 85°C	24-TSSOP (0.173", 4.40mm)	Obsolete	ROHS3 Compliant	1 (Unlimited)
74CBTLV3384PGG	IDT	5 x 1:1	2.3V ~ 3.6V	-40°C ~ 85°C	24-TSSOP (0.173", 4.40mm)	Active	Not specified	Not specified
74CBTLV3384PGG8	Renesas Electronics	5 x 1:1	2.3V ~ 3.6V	-40°C ~ 85°C	24-TSSOP (0.173", 4.40mm)	Active	ROHS3 Compliant	1 (Unlimited)
74CBTLV3384QG	IDT	5 x 1:1	2.3V ~ 3.6V	-40°C ~ 85°C	24-QSOP (0.154", 3.90mm)	Active	Not specified	Not specified
74CBTLV3384QG8	IDT	5 x 1:1	2.3V ~ 3.6V	-40°C ~ 85°C	24-QSOP (0.154", 3.90mm)	Active	Not specified	Not specified
SN74CB3Q3384ADBQR	Texas Instruments	5 x 1:1	2.3V ~ 3.6V	-40°C ~ 85°C	24-SSOP (0.154", 3.90mm)	Active	ROHS3 Compliant	2 (1 Year)
SN74CB3Q3384ADGVR	Texas Instruments	5 x 1:1	2.3V ~ 3.6V	-40°C ~ 85°C	24-TVSOP (0.173", 4.40mm)	Active	ROHS3 Compliant	1 (Unlimited)
SN74CB3Q3384APW	Texas Instruments	5 x 1:1	2.3V ~ 3.6V	-40°C ~ 85°C	24-TSSOP (0.173", 4.40mm)	Last Time Buy	ROHS3 Compliant	1 (Unlimited)
SN74CB3Q3384APWR	Texas Instruments	5 x 1:1	2.3V ~ 3.6V	-40°C ~ 85°C	24-TSSOP (0.173", 4.40mm)	Active	ROHS3 Compliant	1 (Unlimited)
SN74CBTLV3384DBQR	Texas Instruments	5 x 1:1	2.3V ~ 3.6V	-40°C ~ 85°C	24-SSOP (0.154", 3.90mm)	Active	ROHS3 Compliant	2 (1 Year)
SN74CBTLV3384DGVR	Texas Instruments	5 x 1:1	2.3V ~ 3.6V	-40°C ~ 85°C	24-TVSOP (0.173", 4.40mm)	Active	ROHS3 Compliant	1 (Unlimited)

Engineering Selection Recommendations

Primary Recommendation for 24-TSSOP Package Replacement:

SN74CB3Q3384APWR (Texas Instruments) is the preferred substitute for direct replacement of PI3B3384LE in 24-TSSOP packaging. This part is in Active product status with full ROHS3 compliance, MSL 1 rating, and highest inventory availability (50,100 units). The extended voltage range (2.3V ~ 3.6V) provides design flexibility while maintaining full backward compatibility with the original 3V ~ 3.6V specification.

Alternative for 24-TSSOP Package:

74CBTLV3384PGG8 (Renesas Electronics) offers equivalent functionality in 24-TSSOP packaging with Active product status and ROHS3 compliance. This option provides 6,100 units in stock with Tape & Reel packaging for high-volume production requirements.

Package Variant Options:

For applications where package footprint flexibility exists, the 74CBTLV3384QG and 74CBTLV3384QG8 (IDT) provide the same functional circuit in 24-QSOP packaging with significantly higher inventory (31,145 and 9,353 units respectively), potentially offering cost and lead-time advantages.

End-of-Life Consideration:

SN74CB3Q3384APW (Texas Instruments) is designated Last Time Buy status with 2,260 units available. This part is suitable only for legacy system support or final production runs where existing inventory must be consumed.

Frequently Asked Questions (FAQ)

Q: Can I directly replace PI3B3384LE with any of the listed substitutes?

A: Yes, all listed substitutes maintain the same 5 x 1:1 bus switch circuit configuration, operating temperature range (-40°C ~ 85°C), and voltage supply compatibility (3V ~ 3.6V operation is supported by all substitutes). Package compatibility depends on your PCB layout. For identical 24-TSSOP footprint replacement, use SN74CB3Q3384APWR, 74CBTLV3384PGG8, or 74CBTLV3384PGG.

Q: What is the difference between 24-TSSOP, 24-QSOP, 24-SSOP, and 24-TVSOP packages?

A: These are different surface-mount package variants with different physical dimensions and pin spacing. 24-TSSOP (0.173", 4.40mm width) and 24-TVSOP (0.173", 4.40mm width) are functionally equivalent in footprint. 24-QSOP and 24-SSOP (0.154", 3.90mm width) are narrower packages. Substitution between package types requires PCB redesign and layout verification.

Q: Why does the PI3B3384LE specify 3V ~ 3.6V while substitutes specify 2.3V ~ 3.6V?

A: The substitute parts are designed with extended lower-voltage capability. The original 3V ~ 3.6V specification is fully contained within the 2.3V ~ 3.6V range of substitutes, ensuring complete backward compatibility. The extended range provides additional design flexibility for future applications without compromising existing designs.

Q: Are all substitutes ROHS3 compliant?

A: All listed substitutes are ROHS3 compliant except 74CBTLV3384PGG and the IDT variants (74CBTLV3384QG, 74CBTLV3384QG8), where RoHS status is not specified in available documentation. For applications requiring guaranteed ROHS3 compliance, select from Texas Instruments or Renesas Electronics parts.

Q: What does MSL (Moisture Sensitivity Level) mean for component selection?

A: MSL indicates the maximum time a component can be exposed to ambient conditions before soldering. MSL 1 (Unlimited) parts have no time restrictions and are preferred for standard manufacturing. MSL 2 (1 Year) parts require controlled storage and have a one-year shelf life limit. For standard production environments, MSL 1 parts are recommended.

Q: Which substitute offers the best inventory availability?

A: SN74CB3Q3384APWR (Texas Instruments) offers the highest inventory with 50,100 units in stock, followed by 74CBTLV3384QG (IDT) with 31,145 units. These options provide optimal lead-time and cost advantages for volume production.

Q: Can I use 74CBTLV3384QG as a direct replacement if my PCB layout allows the narrower 24-QSOP package?

A: Yes, 74CBTLV3384QG is functionally equivalent with identical circuit configuration and electrical specifications. However, the 24-QSOP package (0.154", 3.90mm width) is narrower than the original 24-TSSOP (0.173", 4.40mm width), requiring PCB footprint modification and layout verification before implementation.

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