XR1008ISO8X Equivalent & Substitute Parts

Part Overview

The XR1008ISO8X is a general-purpose operational amplifier manufactured by MaxLinear, Inc., housed in an 8-SOIC surface-mount package. This device features rail-to-rail output capability with a gain-bandwidth product of 33 MHz and operates across a supply voltage range of 2.5 V to 5.5 V. The XR1008ISO8X is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. Substitute parts must maintain compatibility with the original electrical specifications and 8-SOIC package footprint to ensure direct replacement capability.

Substiute Parts

XR1008ISO8X

MaxLinear, Inc.In Stock: 22799XR1008ISO8X Datasheet

Current PartRFQ

XR1008ISO8MTR

MaxLinear, Inc.In Stock: 1057XR1008ISO8MTR Datasheet

Parametric EquivalentRFQ

AD8655ARZ-REEL

Analog Devices Inc.In Stock: 3506AD8655ARZ-REEL Datasheet

MFR RecommendedRFQ

ADA4084-1ARZ-RL

Analog Devices Inc.In Stock: 2310ADA4084-1ARZ-RL Datasheet

MFR RecommendedRFQ

MAX4256ESA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 724MAX4256ESA+T Datasheet

MFR RecommendedRFQ

MCP633-E/SN

Microchip TechnologyIn Stock: 1979MCP633-E/SN Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the XR1008ISO8X are selected based on strict electrical and mechanical compatibility criteria. The following parameters define acceptable substitution:

Critical Matching Parameters:

• Package / Case: 8-SOIC (0.154", 3.90 mm Width) — mandatory for PCB footprint compatibility
• Amplifier Type: General Purpose — functional classification
• Number of Circuits: 1 — single amplifier per package
• Output Type: Rail-to-Rail — output swing capability
• Operating Temperature Range: -40°C to 125°C — thermal operating envelope
• Voltage - Supply Span: 2.5 V to 5.5 V — power supply compatibility

Performance Parameters for Evaluation:

• Gain Bandwidth Product: 33 MHz (reference)
• Slew Rate: 50 V/µs (reference)
• Current - Supply: 505 µA (reference)
• Current - Output / Channel: 15 mA (reference)

Substitute parts are grouped into two categories: parametric equivalents (identical electrical specifications) and manufacturer-recommended alternatives (active product status with comparable performance within acceptable engineering tolerances).

Parameter Comparison

Engineering Selection Recommendations

Parametric Equivalent (Direct Replacement):

XR1008ISO8MTR is the parametric equivalent to XR1008ISO8X, manufactured by MaxLinear, Inc. Both devices share identical electrical specifications including 50 V/µs slew rate, 33 MHz gain-bandwidth product, 505 µA supply current, and 15 mA output current capability. The XR1008ISO8MTR differs only in packaging format (Cut Tape & Digi-Reel® versus unspecified packaging for the original). Both parts are classified as obsolete. This substitute provides direct functional replacement with no performance trade-offs.

Active Product Alternatives:

For applications requiring active product status with ongoing manufacturer support, the following alternatives are available:

AD8655ARZ-REEL (Analog Devices Inc., DigiTrim® Series, Active Status): Provides rail-to-rail output in 8-SOIC package with -40°C to 125°C operating range and 2.7 V to 5.5 V supply compatibility. Performance differs from the original: slew rate is 11 V/µs (versus 50 V/µs), gain-bandwidth product is 28 MHz (versus 33 MHz), and supply current is 3700 µA (versus 505 µA). Input bias current is significantly lower at 1 pA. Output current capability is substantially higher at 220 mA. ROHS3 compliant and REACH unaffected. Suitable for applications where lower slew rate and higher output current are acceptable trade-offs for active product status.

MCP633-E/SN (Microchip Technology, Active Status): Offers rail-to-rail output in 8-SOIC package with -40°C to 125°C operating range and 2.5 V to 5.5 V supply compatibility. Slew rate is 10 V/µs (versus 50 V/µs), gain-bandwidth product is 24 MHz (versus 33 MHz), and supply current is 2500 µA (versus 505 µA). Input offset voltage is 1.8 mV (versus 5 mV). ROHS3 compliant and REACH unaffected. Suitable for applications where moderate performance reduction is acceptable.

MAX4256ESA+T (Analog Devices Inc./Maxim Integrated, Active Status): Provides push-pull, rail-to-rail output in 8-SOIC package with 2.4 V to 5.5 V supply compatibility. Operating temperature range is -40°C to 85°C (narrower than original). Slew rate is 2.1 V/µs (significantly lower), gain-bandwidth product is 22 MHz (lower), and supply current is 420 µA (lower). Output current capability is 68 mA. ROHS3 compliant and REACH unaffected. Suitable for low-power applications with reduced temperature range requirements.

ADA4084-1ARZ-RL (Analog Devices Inc., Active Status): Provides rail-to-rail output in 8-SOIC package with extended supply voltage range of 3 V to 30 V. Operating temperature range is -40°C to 125°C. Slew rate is 4.6 V/µs (lower), gain-bandwidth product is 15.9 MHz (lower), and supply current is 625 µA. Output current capability is 30 mA. ROHS3 compliant and REACH unaffected. Suitable for applications requiring extended supply voltage capability.

Frequently Asked Questions (FAQ)

Q: Can XR1008ISO8MTR be used as a direct replacement for XR1008ISO8X?

A: Yes. XR1008ISO8MTR is a parametric equivalent with identical electrical specifications. Both devices share the same slew rate (50 V/µs), gain-bandwidth product (33 MHz), supply current (505 µA), output current (15 mA), and operating temperature range (-40°C to 125°C). The only difference is packaging format. Both are classified as obsolete.

Q: What are the key differences between the original XR1008ISO8X and active product alternatives?

A: Active alternatives differ in performance characteristics. AD8655ARZ-REEL has lower slew rate (11 V/µs) but higher output current (220 mA). MCP633-E/SN has lower slew rate (10 V/µs) and higher supply current (2500 µA). MAX4256ESA+T has significantly lower slew rate (2.1 V/µs) and narrower operating temperature range (-40°C to 85°C). ADA4084-1ARZ-RL has lower slew rate (4.6 V/µs) but extended supply voltage range (3 V to 30 V). All active alternatives are ROHS3 compliant.

Q: Are all substitute parts compatible with the original 8-SOIC footprint?

A: Yes. All listed substitute parts use the 8-SOIC (0.154", 3.90 mm Width) package, ensuring PCB footprint compatibility. Surface-mount assembly processes remain unchanged.

Q: Which substitute part has the closest performance match to XR1008ISO8X?

A: XR1008ISO8MTR is the closest match, being a parametric equivalent with identical electrical specifications. Among active alternatives, MCP633-E/SN provides the most comparable performance with 24 MHz gain-bandwidth product and 10 V/µs slew rate, though both are lower than the original 33 MHz and 50 V/µs.

Q: What is the supply voltage compatibility range for substitute parts?

A: Most substitutes support 2.5 V to 5.5 V supply range, matching the original. MAX4256ESA+T supports 2.4 V to 5.5 V (slightly lower minimum). AD8655ARZ-REEL supports 2.7 V to 5.5 V (slightly higher minimum). ADA4084-1ARZ-RL supports extended range of 3 V to 30 V.

Q: Are all active substitute parts RoHS compliant?

A: Yes. All active product alternatives (AD8655ARZ-REEL, ADA4084-1ARZ-RL, MAX4256ESA+T, and MCP633-E/SN) are ROHS3 compliant and REACH unaffected.

Q: What is the operating temperature range for all substitute options?

A: XR1008ISO8X, XR1008ISO8MTR, AD8655ARZ-REEL, ADA4084-1ARZ-RL, and MCP633-E/SN all support -40°C to 125°C. MAX4256ESA+T has a narrower range of -40°C to 85°C.

Q: Which substitute part offers the highest output current capability?

A: AD8655ARZ-REEL provides the highest output current at 220 mA, compared to the original 15 mA. MAX4256ESA+T offers 68 mA, and ADA4084-1ARZ-RL offers 30 mA.