P82B715D Equivalent & Substitute Parts

Part Overview

The P82B715D is a Buffer/ReDriver interface IC designed for I2C 2-Wire Bus applications in a single-channel configuration. Manufactured by Texas Instruments, this component operates across a 4.5V to 12V supply range with 22mA current consumption and is housed in an 8-SOIC package. The part is currently in Last Time Buy status, indicating end-of-life production. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for new production runs or design revisions.

Key Parameters

Parameter	P82B715D Value
Manufacturer	Texas Instruments
Type	Buffer, ReDriver
Applications	I2C
Number of Channels	1
Input/Output	2-Wire Bus
Voltage Supply Range	4.5V ~ 12V
Current Supply	22mA
Capacitance - Input	3000 pF
Operating Temperature	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
Product Status	Last Time Buy

Substitute Part Grouping Explanation

Substitution for the P82B715D is determined by the following critical parameters:

Primary Substitution Criteria:

Single-channel I2C Buffer/ReDriver functionality
2-Wire Bus input and output configuration
Operating temperature range: -40°C to 85°C
ROHS3 compliance and REACH unaffected status
Surface mount technology

Packaging Considerations: The P82B715D uses an 8-SOIC package. Direct substitutes maintain this package type, while alternative substitutes may use different packages (8-TSSOP, 8-XQFN) requiring PCB layout modifications.

Voltage Supply Compatibility: The P82B715D operates at 4.5V to 12V. Substitute parts with lower voltage ranges (2.7V to 5.5V or 3V to 5.5V) are compatible only in applications where supply voltage does not exceed the substitute's maximum rating.

Current Consumption: The P82B715D draws 22mA. Substitutes with lower current consumption (1mA to 5µA) provide improved power efficiency but must be verified for functional equivalence in the target application.

Parameter Comparison

Part Number	Manufacturer	Type	Channels	Package	Voltage Supply	Current Supply	Input Capacitance	Product Status	Packaging Type
P82B715D	Texas Instruments	Buffer, ReDriver	1	8-SOIC	4.5V ~ 12V	22mA	3000 pF	Last Time Buy	Tube
P82B715DR	Texas Instruments	Buffer, ReDriver	1	8-SOIC	4.5V ~ 12V	22mA	3000 pF	Active	Cut Tape & Digi-Reel
P82B715TD,112	NXP USA Inc.	Buffer, ReDriver	1	8-SOIC	4.5V ~ 12V	22mA	3000 pF	Obsolete	Tube
P82B715TD,118	NXP USA Inc.	Buffer, ReDriver	1	8-SOIC	4.5V ~ 12V	22mA	3000 pF	Obsolete	Cut Tape & Digi-Reel
PCA9507DP,118	NXP USA Inc.	Buffer, Accelerator	1	8-TSSOP	2.7V ~ 5.5V	1mA	6 pF	Active	Cut Tape & Digi-Reel
PCA9508DP,118	NXP USA Inc.	Buffer, ReDriver	1	8-TSSOP	2.7V ~ 5.5V	1mA	5.2 pF	Active	Tape & Reel
PCA9510ADP,118	NXP USA Inc.	Buffer, ReDriver	1	8-TSSOP	2.7V ~ 5.5V	4.6mA	1.9 pF	Active	Cut Tape & Digi-Reel

Engineering Selection Recommendations

Direct Replacement (Same Package, Same Electrical Characteristics): P82B715DR is the primary recommended substitute. It maintains identical electrical specifications and 8-SOIC packaging as the P82B715D while offering Active product status and improved availability (27,271 units in stock versus 2,244 units). Both parts are Texas Instruments products with ROHS3 compliance and REACH unaffected status.

Cross-Manufacturer Alternatives (Same Package, Identical Parameters): P82B715TD,112 and P82B715TD,118 are NXP USA Inc. equivalents with identical electrical and thermal specifications. Both maintain 8-SOIC packaging and 4.5V to 12V supply range. However, both parts carry Obsolete product status, making them unsuitable for new designs despite high inventory availability (88,100 and 5,401 units respectively).

Alternative Package Solutions (Different Package, Lower Power Consumption): PCA9508DP,118 and PCA9510ADP,118 provide single-channel I2C Buffer/ReDriver functionality in 8-TSSOP packages with significantly reduced current consumption (1mA and 4.6mA respectively). These parts require PCB layout modifications due to package change but offer Active product status and improved power efficiency. Voltage supply range is reduced to 2.7V to 5.5V, limiting use in applications requiring the full 4.5V to 12V range of the P82B715D.

PCA9507DP,118 is a Buffer/Accelerator variant supporting both HDMI and I2C applications in 8-TSSOP package with 1mA current consumption and Active status. This part is suitable only for applications where HDMI compatibility is required.

Compliance and Certification: All recommended substitutes maintain ROHS3 compliance, REACH unaffected status, and -40°C to 85°C operating temperature range, ensuring regulatory and environmental compatibility with the original P82B715D specification.

Frequently Asked Questions (FAQ)

Q: Can P82B715DR be used as a direct replacement for P82B715D? A: Yes. P82B715DR is electrically and mechanically identical to P82B715D, with the same 8-SOIC package, 4.5V to 12V supply range, 22mA current consumption, and 3000 pF input capacitance. The primary difference is packaging format (Cut Tape & Digi-Reel versus Tube) and Active product status. No design changes are required.

Q: Why are P82B715TD,112 and P82B715TD,118 not recommended despite high inventory? A: Both parts carry Obsolete product status, indicating discontinued manufacturing. While currently in stock, future availability cannot be guaranteed. For new designs or long-term production, Active status parts such as P82B715DR provide supply chain security.

Q: Can PCA9508DP,118 replace P82B715D in all applications? A: PCA9508DP,118 is functionally equivalent for I2C 2-Wire Bus applications but has two critical limitations: (1) voltage supply range is 2.7V to 5.5V, incompatible with applications requiring the full 4.5V to 12V range of P82B715D, and (2) package is 8-TSSOP instead of 8-SOIC, requiring PCB layout modifications. Verify supply voltage requirements before substitution.

Q: What is the difference between Buffer and Buffer/Accelerator types? A: Both types perform signal conditioning for I2C buses. The Accelerator variant (PCA9507DP,118) includes additional functionality for HDMI applications. For I2C-only designs, standard Buffer/ReDriver parts are appropriate.

Q: Does package change from 8-SOIC to 8-TSSOP affect electrical performance? A: Package change does not affect core electrical performance for I2C signaling. However, 8-TSSOP packages have different pin spacing (0.118" width versus 0.154" for 8-SOIC), requiring PCB footprint redesign. Input capacitance values differ slightly between packages (1.9 pF to 6 pF for TSSOP variants versus 3000 pF for SOIC), which may affect signal integrity in high-capacitance bus environments.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All parts listed maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility with the P82B715D for applications subject to environmental and hazardous substance restrictions.

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