RC4558PSRG4 Equivalent & Substitute Parts

Part Overview

The RC4558PSRG4 is a general-purpose operational amplifier manufactured by Texas Instruments, featuring dual circuits in an 8-SO surface mount package. This device is classified as Last Time Buy, indicating discontinued production with limited inventory availability. The RC4558PSRG4 contains two differential output amplifier circuits with a 3 MHz gain bandwidth product and 1.7 V/µs slew rate, designed for general-purpose signal conditioning and amplification applications.

Due to Last Time Buy status, identifying equivalent and substitute parts is essential for design continuity and long-term supply chain planning. Substitute parts are selected based on matching electrical performance parameters, compatible package footprints, and active product status where available.

Substiute Parts

RC4558PSRG4

Texas InstrumentsIn Stock: 1065RC4558PSRG4 Datasheet

Current PartRFQ

RC4558DR

Texas InstrumentsIn Stock: 105431RC4558DR Datasheet

MFR RecommendedRFQ

RC4558PSR

Texas InstrumentsIn Stock: 16956RC4558PSR Datasheet

MFR RecommendedRFQ

BA4558F-E2

Rohm SemiconductorIn Stock: 165239BA4558F-E2 Datasheet

MFR RecommendedRFQ

BA4558RF-E2

Rohm SemiconductorIn Stock: 35255BA4558RF-E2 Datasheet

MFR RecommendedRFQ

MC33172D

STMicroelectronicsIn Stock: 100501MC33172D Datasheet

MFR RecommendedRFQ

MC33172DT

STMicroelectronicsIn Stock: 45324MC33172DT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RC4558PSRG4 are grouped into two categories based on substitution compatibility:

Category 1: Direct Electrical Equivalents (Texas Instruments RC4558 Series)

RC4558DR and RC4558PSR are direct electrical equivalents manufactured by Texas Instruments under the same RC4558 base product number. These parts maintain identical electrical specifications including 1.7 V/µs slew rate, 3 MHz gain bandwidth product, 150 nA input bias current, and 500 µV input offset voltage. The primary difference is packaging format: RC4558DR uses Cut Tape & Digi-Reel® format with 8-SOIC (0.154", 3.90mm Width) package, while RC4558PSR uses Tape & Reel format with 8-SO (0.209", 5.30mm Width) package matching the original RC4558PSRG4. RC4558DR is Active product status, ensuring long-term availability.

Category 2: Functional Equivalents (Alternative Manufacturers)

BA4558F-E2, BA4558RF-E2 (Rohm Semiconductor), MC33172DT, and MC33172D (STMicroelectronics) are functional equivalents with compatible electrical performance within specified tolerances. These parts share the same dual-circuit general-purpose amplifier architecture and 8-SOIC package footprint. Electrical parameters differ within acceptable ranges: slew rates range from 1.0 to 2.0 V/µs, gain bandwidth products from 2.0 to 2.1 MHz, and input bias currents from 20 to 60 nA. Supply voltage spans are broader (4 V to 44 V minimum-maximum), and operating temperature ranges extend to -40°C to 105°C. All substitute parts maintain ROHS3 compliance and MSL 1 rating.

Key Parameters Determining Substitution:

• Dual-circuit configuration (2 circuits required)
• General-purpose amplifier type
• Surface mount 8-SOIC package family
• Supply voltage compatibility (minimum 10 V, maximum 30 V)
• Output current capability (minimum 10 mA per channel)
• ROHS3 compliance and MSL 1 rating

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: RC4558DR

RC4558DR is the recommended substitute for new designs and long-term supply planning. As an Active product from Texas Instruments, it provides assured availability and eliminates Last Time Buy constraints. RC4558DR maintains identical electrical specifications to RC4558PSRG4 (1.7 V/µs slew rate, 3 MHz gain bandwidth product, 150 nA input bias current). The package footprint differs (0.154" width versus 0.209" width), requiring PCB layout verification for existing designs. RC4558DR is supplied in Cut Tape & Digi-Reel® format, suitable for automated assembly processes.

Secondary Recommendation: RC4558PSR

RC4558PSR provides identical electrical performance and package dimensions (0.209", 5.30mm Width) to RC4558PSRG4, enabling direct substitution without PCB modification. However, RC4558PSR retains Last Time Buy status, offering only temporary supply relief. This option is suitable for immediate production needs or design continuation with existing inventory.

Alternative Recommendation: MC33172DT or MC33172D

MC33172DT and MC33172D from STMicroelectronics are Active products offering extended operating temperature range (-40°C to 105°C) and broader supply voltage compatibility (4 V to 44 V). These parts feature improved input bias current (20 nA versus 150 nA) and higher output current capability (27 mA versus 10 mA per channel). Slew rate and gain bandwidth product are slightly lower (2.0 V/µs and 2.1 MHz respectively). MC33172DT uses Cut Tape & Digi-Reel® packaging; MC33172D uses Tube packaging. Both maintain ROHS3 compliance and MSL 1 rating. Package footprint is 0.154" width, requiring PCB layout verification.

Conditional Recommendation: BA4558F-E2 or BA4558RF-E2

BA4558F-E2 and BA4558RF-E2 from Rohm Semiconductor are Active products with extended operating temperature ranges (-40°C to 85°C and -40°C to 105°C respectively). These parts feature lower input bias current (60 nA) and reduced slew rate (1.2 V/µs and 1.0 V/µs). Supply voltage minimum is reduced to 8 V, expanding compatibility with lower-voltage systems. Package footprint is 0.173" width. Selection between these alternatives depends on temperature range requirements and slew rate tolerance in the target application.

Frequently Asked Questions (FAQ)

Q1: Can RC4558DR be used as a direct replacement for RC4558PSRG4 without PCB modification?

RC4558DR maintains identical electrical specifications but uses a different package width (0.154" versus 0.209"). While the 8-SOIC pin pitch remains standard, the narrower body may require PCB footprint adjustment. Verify pad spacing and clearance in existing designs before substitution. For new designs, RC4558DR is recommended without restriction.

Q2: What is the primary difference between RC4558PSR and RC4558PSRG4?

RC4558PSR and RC4558PSRG4 are electrically and mechanically identical. The suffix "G4" in RC4558PSRG4 indicates a specific date code or manufacturing batch. Both parts share Last Time Buy status. RC4558PSR offers equivalent performance with identical package dimensions (0.209", 5.30mm Width).

Q3: Are BA4558F-E2 and BA4558RF-E2 interchangeable?

BA4558F-E2 and BA4558RF-E2 are functionally equivalent Rohm Semiconductor parts with identical electrical specifications except slew rate (1.2 V/µs versus 1.0 V/µs) and operating temperature range (BA4558RF-E2 extends to 105°C). Both use 8-SOIC (0.173", 4.40mm Width) packages. Selection depends on temperature and slew rate requirements. Verify application compatibility before substitution.

Q4: Why do MC33172DT and MC33172D have different input bias currents than RC4558PSRG4?

MC33172DT and MC33172D are manufactured by STMicroelectronics using different process technology than Texas Instruments RC4558 series. The 20 nA input bias current (versus 150 nA) represents improved performance characteristics. This lower bias current reduces input offset drift and improves precision in high-impedance applications. Verify that existing circuit designs do not depend on the higher bias current value before substitution.

Q5: Can RC4558PSRG4 be replaced with MC33172DT in applications requiring 0°C to 70°C operation?

MC33172DT operates across -40°C to 105°C, fully encompassing the 0°C to 70°C requirement. All electrical parameters remain compatible within specified tolerances. The primary consideration is package footprint (0.154" width versus 0.209" width), requiring PCB layout verification. MC33172DT is recommended for new designs requiring extended temperature margin or improved performance characteristics.

Q6: What packaging formats are available for substitute parts?

RC4558DR is supplied in Cut Tape & Digi-Reel® format. RC4558PSR uses Tape & Reel format. BA4558F-E2 and BA4558RF-E2 use Cut Tape & Digi-Reel® format. MC33172DT uses Cut Tape & Digi-Reel® format; MC33172D uses Tube packaging. Verify packaging compatibility with assembly equipment and procurement requirements before final selection.

Q7: Are all substitute parts ROHS3 compliant?

All substitute parts listed (RC4558DR, RC4558PSR, BA4558F-E2, BA4558RF-E2, MC33172DT, MC33172D) are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level. These certifications match RC4558PSRG4 specifications, ensuring regulatory compliance and handling consistency across all alternatives.

Q8: Which substitute part offers the best long-term availability?

RC4558DR and MC33172DT are both Active products with assured long-term availability. RC4558DR maintains identical electrical specifications to RC4558PSRG4 within the Texas Instruments RC4558 product family. MC33172DT offers extended operating temperature range and improved performance characteristics. For supply chain continuity, RC4558DR is the primary recommendation; MC33172DT is the secondary recommendation for applications requiring enhanced performance or temperature margin.