PCA9525DP,118 Equivalent & Substitute Parts

Part Overview

The PCA9525DP,118 is a 1-channel I2C buffer and redriver IC manufactured by NXP Semiconductors in an 8-TSSOP surface mount package. This device operates at 400kHz data rate with a supply voltage range of 2.7V to 5.5V and is designed for 2-wire bus signal conditioning applications. The part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	PCA9525DP,118
Manufacturer	NXP Semiconductors
Type	Buffer, ReDriver
Applications	I2C
Number of Channels	1
Data Rate (Max)	400kHz
Input/Output	2-Wire Bus
Voltage - Supply	2.7V ~ 5.5V
Current - Supply	170µA
Operating Temperature	-40°C ~ 85°C
Package / Case	8-TSSOP (0.118", 3.00mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the PCA9525DP,118 is determined by the following critical parameters:

Primary Substitution Criteria:

Type: Buffer, ReDriver
Applications: I2C or I2C-Hotswap
Input/Output: 2-Wire Bus
Data Rate (Max): 400kHz minimum
Voltage - Supply: Must encompass or match 2.7V ~ 5.5V range
Operating Temperature: -40°C ~ 85°C
Package / Case: 8-TSSOP preferred for form factor compatibility
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Substitute parts are grouped into two categories:

Category 1: Direct NXP Equivalents (8-TSSOP, 400kHz, 2.7V-5.5V) Parts PCA9508DP,118 and PCA9510ADP,118 maintain identical electrical specifications and package form factor, with active product status.

Category 2: Texas Instruments Alternatives (400kHz, 2-Wire Bus) Parts from the P82B96 series (P82B96D, P82B96DR, P82B96P, P82B96PW, P82B96PWR) operate at 400kHz with 2-wire bus I2C functionality. These parts feature wider supply voltage ranges (2V-15V) and are available in multiple package options including 8-SOIC, 8-DIP, and 8-TSSOP variants.

Category 3: Texas Instruments Single-Channel Alternatives (8-SOIC, 8-DIP) Parts P82B715D, P82B715DR, and P82B715P provide 1-channel I2C buffer functionality with different package options but operate at higher supply voltages (4.5V-12V).

Parameter Comparison

Part Number	Manufacturer	Type	Channels	Data Rate	Supply Voltage	Supply Current	Package	Mounting	Status
PCA9525DP,118	NXP	Buffer, ReDriver	1	400kHz	2.7V ~ 5.5V	170µA	8-TSSOP	Surface Mount	Obsolete
PCA9508DP,118	NXP USA Inc.	Buffer, ReDriver	1	400kHz	2.7V ~ 5.5V	1mA	8-TSSOP	Surface Mount	Active
PCA9510ADP,118	NXP USA Inc.	Buffer, ReDriver	1	400kHz	2.7V ~ 5.5V	4.6mA	8-TSSOP	Surface Mount	Active
P82B96D	Texas Instruments	Buffer, ReDriver	2	400kHz	2V ~ 15V	4mA	8-SOIC	Surface Mount	Last Time Buy
P82B96DR	Texas Instruments	Buffer, ReDriver	2	400kHz	2V ~ 15V	4mA	8-SOIC	Surface Mount	Active
P82B96P	Texas Instruments	Buffer, ReDriver	2	400kHz	2V ~ 15V	4mA	8-DIP	Through Hole	Active
P82B96PW	Texas Instruments	Buffer, ReDriver	2	400kHz	2V ~ 15V	4mA	8-TSSOP	Surface Mount	Last Time Buy
P82B96PWR	Texas Instruments	Buffer, ReDriver	2	400kHz	2V ~ 15V	4mA	8-TSSOP	Surface Mount	Active
P82B715D	Texas Instruments	Buffer, ReDriver	1	—	4.5V ~ 12V	22mA	8-SOIC	Surface Mount	Last Time Buy
P82B715DR	Texas Instruments	Buffer, ReDriver	1	—	4.5V ~ 12V	22mA	8-SOIC	Surface Mount	Active
P82B715P	Texas Instruments	Buffer, ReDriver	1	—	4.5V ~ 12V	22mA	8-DIP	Through Hole	Active

Engineering Selection Recommendations

Recommended Primary Substitutes:

For direct replacement in existing designs, PCA9508DP,118 and PCA9510ADP,118 are the preferred choices. Both parts are manufactured by NXP, maintain identical electrical specifications for I2C 400kHz operation, operate within the same 2.7V to 5.5V supply range, and are packaged in the same 8-TSSOP form factor. Both parts carry active product status and ROHS3 compliance. The primary difference is supply current: PCA9508DP,118 draws 1mA while PCA9510ADP,118 draws 4.6mA.

Alternative Substitutes for Design Flexibility:

The P82B96 series from Texas Instruments (P82B96DR and P82B96PWR in active status) provides 400kHz I2C buffer functionality with extended supply voltage range (2V-15V). P82B96PWR maintains the 8-TSSOP package form factor for PCB layout compatibility. These parts feature 2-channel capability, which provides additional functionality beyond the single-channel PCA9525DP,118. Supply current is 4mA.

Limited Availability Alternatives:

P82B715DR (Texas Instruments, active status) offers single-channel I2C buffer functionality in 8-SOIC package. This part requires higher supply voltage (4.5V-12V minimum) and draws 22mA supply current, making it suitable only for applications with compatible power budgets.

Compliance Status:

All recommended substitute parts maintain ROHS3 compliance and operate across the -40°C to 85°C temperature range specified for the original PCA9525DP,118.

Frequently Asked Questions (FAQ)

Q: Can PCA9508DP,118 directly replace PCA9525DP,118 in my design?

A: Yes. Both parts are 1-channel I2C buffers with 400kHz data rate, 2.7V-5.5V supply voltage, 8-TSSOP package, and surface mount configuration. PCA9508DP,118 is active status and ROHS3 compliant. The primary difference is supply current (1mA vs. 170µA), which may affect power budget calculations.

Q: What is the difference between PCA9508DP,118 and PCA9510ADP,118?

A: Both are NXP 1-channel I2C buffers in 8-TSSOP packages with identical electrical specifications. The key difference is supply current: PCA9508DP,118 draws 1mA while PCA9510ADP,118 draws 4.6mA. Input capacitance also differs (5.2 pF vs. 1.9 pF). Both are active status parts.

Q: Can I use P82B96PWR instead of PCA9525DP,118?

A: P82B96PWR is functionally compatible for I2C 400kHz applications. It maintains the 8-TSSOP package form factor and operates at 400kHz. However, it is a 2-channel device (vs. 1-channel) and has a wider supply voltage range (2V-15V). Supply current is 4mA. This part is suitable if your application can accommodate the additional channel and higher current draw.

Q: Why do some substitute parts have different package types?

A: The P82B96 and P82B715 series are available in multiple package options (8-SOIC, 8-DIP, 8-TSSOP) to accommodate different PCB assembly requirements. The 8-TSSOP variants (P82B96PW, P82B96PWR) maintain form factor compatibility with the original PCA9525DP,118. The 8-SOIC and 8-DIP options require PCB layout modifications.

Q: What is the supply current impact of switching to a substitute part?

A: The original PCA9525DP,118 draws 170µA. PCA9508DP,118 draws 1mA (5.9x higher). PCA9510ADP,118 draws 4.6mA (20.6x higher). P82B96 series parts draw 4mA (24.6x higher). P82B715 series parts draw 22mA (129x higher). Verify that your power supply and thermal design accommodate the increased current draw.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 compliance certification, matching the original PCA9525DP,118.

Q: Which substitute part has the best availability?

A: P82B96PWR (Texas Instruments, active status) has 15,600 units in stock. P82B96DR has 37,600 units. PCA9508DP,118 has 2,100 units. PCA9510ADP,118 has 9,687 units. Availability should be verified with your component supplier.

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