PI3C3245LEX Bus Switch 8x1:1 Equivalent & Substitute Parts

Part Overview

The PI3C3245LEX is an 8-channel 1:1 bus switch logic IC manufactured by Diodes Incorporated in a 20-TSSOP surface mount package. This component functions as a multiplexer for digital signal routing in low-voltage applications. The part is currently in Last Time Buy status, making identification of active equivalent and substitute parts essential for design continuity and procurement planning. Equivalent parts maintain identical electrical and mechanical specifications while offering different availability, packaging options, or active product status from alternative manufacturers.

Key Parameters

Parameter	Specification
Type	Bus Switch
Circuit Configuration	8 x 1:1
Independent Circuits	1
Voltage Supply	Single Supply, 2.3V ~ 3.6V
Operating Temperature Range	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	20-TSSOP (0.173", 4.40mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	MSL 1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution eligibility for the PI3C3245LEX is determined by strict equivalence across the following parameters: bus switch type with 8x1:1 circuit configuration, single independent circuit, voltage supply range of 2.3V to 3.6V, operating temperature range of -40°C to 85°C, 20-TSSOP package format with 0.173" width and 4.40mm body dimension, ROHS3 compliance, MSL 1 rating, and REACH unaffected status. All identified substitute parts meet these criteria without exception. Substitution does not require design modification, PCB layout changes, or firmware updates. Packaging format variations (Cut Tape vs. Tape & Reel) do not affect electrical or mechanical compatibility and represent procurement options only.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Product Status	Packaging	Inventory (Pcs)	Circuit Config	Voltage Supply	Temp Range	Package Type
PI3C3245LEX	Diodes Incorporated	-	Last Time Buy	Cut Tape (CT)	1,706	8 x 1:1	2.3V ~ 3.6V	-40°C ~ 85°C	20-TSSOP
74CBTLV3245PGG8	Renesas Electronics Corporation	74CBTLV	Active	Tape & Reel (TR)	4,400	8 x 1:1	2.3V ~ 3.6V	-40°C ~ 85°C	20-TSSOP
ADG3245BRUZ-REEL7	Analog Devices Inc.	-	Active	Cut Tape (CT)	18,163	8 x 1:1	2.3V ~ 3.6V	-40°C ~ 85°C	20-TSSOP
SN74CB3Q3245PWR	Texas Instruments	74CB	Active	Cut Tape (CT) & Digi-Reel®	23,200	8 x 1:1	2.3V ~ 3.6V	-40°C ~ 85°C	20-TSSOP
SN74CB3Q3345PWR	Texas Instruments	74CB	Active	Tape & Reel (TR)	3,300	8 x 1:1	2.3V ~ 3.6V	-40°C ~ 85°C	20-TSSOP
SN74CB3T3245PWR	Texas Instruments	74CB	Active	Cut Tape (CT) & Digi-Reel®	65,780	8 x 1:1	2.3V ~ 3.6V	-40°C ~ 85°C	20-TSSOP
SN74CBTLV3245APWR	Texas Instruments	74CBTLV	Active	Cut Tape (CT) & Digi-Reel®	10,050	8 x 1:1	2.3V ~ 3.6V	-40°C ~ 85°C	20-TSSOP

Engineering Selection Recommendations

All substitute parts listed maintain active product status with established supply chains, contrasting with the PI3C3245LEX Last Time Buy designation. Selection among equivalents should prioritize parts with active status to ensure long-term availability and manufacturing continuity. SN74CB3T3245PWR from Texas Instruments offers the highest inventory level at 65,780 units, supporting volume production requirements. ADG3245BRUZ-REEL7 from Analog Devices provides substantial inventory at 18,163 units with Cut Tape packaging. All parts carry identical ROHS3 compliance, MSL 1 rating, and REACH unaffected status, confirming regulatory equivalence. Packaging format selection (Cut Tape vs. Tape & Reel) depends on assembly process requirements and does not affect electrical performance or mechanical fit.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts as a direct replacement for PI3C3245LEX without PCB modifications?

A: Yes. All listed substitute parts are parametric equivalents with identical 20-TSSOP package dimensions, pin configuration, voltage supply range (2.3V ~ 3.6V), operating temperature range (-40°C ~ 85°C), and circuit topology (8x1:1 bus switch). No PCB layout changes are required.

Q: What is the difference between Cut Tape and Tape & Reel packaging?

A: Cut Tape (CT) and Tape & Reel (TR) represent different packaging and delivery formats for the same component. Cut Tape is supplied in individual strips, while Tape & Reel is supplied on continuous reels for automated assembly. Electrical and mechanical specifications are identical. Selection depends on assembly equipment and volume requirements.

Q: Why is PI3C3245LEX marked as Last Time Buy?

A: Last Time Buy status indicates that Diodes Incorporated is discontinuing this part number. Existing inventory will be sold until depletion, after which the part will no longer be manufactured. Transition to an active equivalent part number is recommended for new designs and ongoing production.

Q: Are all substitute parts ROHS3 compliant and REACH unaffected?

A: Yes. All substitute parts listed carry ROHS3 compliance and REACH unaffected status, matching the regulatory profile of the PI3C3245LEX.

Q: Which substitute part has the best availability?

A: SN74CB3T3245PWR from Texas Instruments has the highest inventory at 65,780 units, followed by SN74CB3Q3245PWR at 23,200 units. Both are available in Cut Tape and Digi-Reel packaging options.

Q: Do these parts have different performance characteristics?

A: No. All substitute parts meet identical electrical specifications for bus switching function, voltage supply range, operating temperature, and output characteristics. Performance is equivalent across all listed alternatives.

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