PCA9614DP,118 Equivalent & Substitute Parts

Part Overview

The PCA9614DP,118 is a 2-channel I2C buffer and redriver IC manufactured by NXP Semiconductors, housed in a 10-TSSOP package. This component operates at 400kHz maximum data rate and supports I2C 2-wire bus applications with a supply voltage range of 2.3V to 5.5V. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Manufacturer Part Number	PCA9614DP,118
Manufacturer	NXP Semiconductors
Product Category	Interface - Buffer, ReDriver
Package Type	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Supplier Device Package	10-TSSOP
Applications	I2C
Number of Channels	2
Data Rate (Max)	400kHz
Input/Output	2-Wire Bus
Voltage - Supply	2.3V ~ 5.5V
Current - Supply	16µA
Capacitance - Input	7 pF
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the PCA9614DP,118 is determined by the following critical parameters:

Functional equivalence: 2-channel I2C buffer/redriver with 400kHz maximum data rate
Electrical compatibility: Supply voltage range, input capacitance, and operating temperature range
Package compatibility: Surface mount packages with compatible pinout and thermal characteristics
Compliance requirements: RoHS3 compliance and REACH unaffected status

The substitute parts are grouped into two categories:

Direct Package Equivalent: PCA9614DPZ maintains identical package form factor (10-TSSOP) and electrical specifications, differing only in product status (active vs. obsolete) and packaging format.

Functional Equivalents with Package Variation: LTC4301 series parts (Analog Devices) provide equivalent I2C buffer/redriver functionality with 400kHz data rate and 2-channel configuration. These parts operate within compatible voltage ranges (2.7V ~ 5.5V) and temperature ranges (-40°C ~ 85°C for industrial grades). Package options include 8-DFN (3x3) and 8-MSOP formats, requiring PCB layout redesign but maintaining electrical compatibility.

Parameter Comparison

Parameter	PCA9614DP,118	PCA9614DPZ	LTC4301CDD#TRPBF	LTC4301CMS8#TRPBF	LTC4301IDD#TRPBF	LTC4301IMS8#TRPBF
Manufacturer	NXP Semiconductors	NXP USA Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.
Product Status	Obsolete	Active	Active	Active	Active	Active
Package Type	10-TSSOP	10-TSSOP	8-DFN (3x3)	8-MSOP	8-DFN (3x3)	8-MSOP
Number of Channels	2	2	2	2	2	2
Data Rate (Max)	400kHz	400kHz	400kHz	400kHz	400kHz	400kHz
Input/Output	2-Wire Bus	2-Wire Bus	2-Wire Bus	2-Wire Bus	2-Wire Bus	2-Wire Bus
Voltage - Supply	2.3V ~ 5.5V	2.3V ~ 5.5V	2.7V ~ 5.5V	2.7V ~ 5.5V	2.7V ~ 5.5V	2.7V ~ 5.5V
Current - Supply	16µA	16µA	4.5mA	4.5mA	4.5mA	4.5mA
Capacitance - Input	7 pF	7 pF	10 pF	10 pF	10 pF	10 pF
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For Direct Replacement (No PCB Redesign)

PCA9614DPZ is the primary substitute for PCA9614DP,118. Both parts share identical package geometry (10-TSSOP), electrical specifications, and operating parameters. The key advantage is active product status with current manufacturing support and availability. This part is suitable for applications requiring minimal design changes and immediate compatibility.

For Functional Substitution (PCB Redesign Required)

LTC4301 series parts from Analog Devices provide equivalent I2C buffer/redriver functionality with active product status and extended availability. Selection between variants depends on application requirements:

LTC4301CDD#TRPBF and LTC4301CMS8#TRPBF: Commercial temperature range (0°C ~ 70°C). Use in non-industrial applications with controlled thermal environments.
LTC4301IDD#TRPBF and LTC4301IMS8#TRPBF: Industrial temperature range (-40°C ~ 85°C). Required for applications matching the original PCA9614DP,118 temperature specification.

Package selection between 8-DFN (3x3) and 8-MSOP depends on PCB layout constraints and manufacturing capabilities. Both packages maintain equivalent electrical performance.

All substitute parts maintain ROHS3 compliance and unlimited moisture sensitivity rating, ensuring regulatory and environmental compatibility with the original specification.

Frequently Asked Questions (FAQ)

Q: Can PCA9614DPZ be used as a direct drop-in replacement for PCA9614DP,118?

A: Yes. PCA9614DPZ maintains identical package form factor (10-TSSOP), pin configuration, and electrical specifications. No PCB layout modifications are required. The primary difference is product status (active vs. obsolete) and packaging format options.

Q: What are the key differences between NXP PCA9614DPZ and Analog Devices LTC4301 series?

A: Both provide 2-channel I2C buffer/redriver functionality at 400kHz. Primary differences include package format (10-TSSOP vs. 8-DFN or 8-MSOP), supply current (16µA vs. 4.5mA), input capacitance (7pF vs. 10pF), and minimum supply voltage (2.3V vs. 2.7V). LTC4301 parts require PCB redesign due to different package geometry.

Q: Which LTC4301 variant should I select for industrial temperature applications?

A: Select LTC4301IDD#TRPBF (8-DFN package) or LTC4301IMS8#TRPBF (8-MSOP package). Both support the -40°C ~ 85°C operating temperature range matching the original PCA9614DP,118 specification. The "I" grade designation indicates industrial temperature range.

Q: Are there package compatibility considerations when switching from 10-TSSOP to 8-DFN or 8-MSOP?

A: Yes. 8-DFN (3x3) and 8-MSOP packages have different footprints and pin counts compared to 10-TSSOP. PCB layout redesign is required, including trace routing and component placement modifications. Verify pinout compatibility with the LTC4301 datasheet before implementation.

Q: Do all substitute parts maintain the same compliance certifications?

A: Yes. PCA9614DPZ and all LTC4301 variants are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1), matching the original PCA9614DP,118 certifications. REACH status is unaffected for all parts.

Q: What is the impact of increased supply current in LTC4301 parts?

A: LTC4301 series draws 4.5mA compared to 16µA for PCA9614DP,118. This 280x increase in supply current affects power budget calculations and thermal design. Verify power supply capacity and thermal management in your application before substitution.

Q: Can I use LTC4301CDD#TRPBF or LTC4301CMS8#TRPBF in applications requiring -40°C ~ 85°C operation?

A: No. Commercial grade variants (LTC4301C) support only 0°C ~ 70°C. For full temperature range compatibility with the original specification, use industrial grade variants (LTC4301I).

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