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LM1458MX Equivalent & Substitute Parts
Part Overview
The LM1458MX is a general-purpose operational amplifier featuring two independent circuits in an 8-SOIC surface mount package, manufactured by Texas Instruments. This device is classified as Last Time Buy, indicating discontinued production with limited remaining inventory. The LM1458MX operates across a ±18V supply span with a 1 MHz gain bandwidth product and 0.5V/µs slew rate, suitable for general-purpose amplification applications requiring moderate performance specifications.
Equivalent and substitute parts are necessary due to the Last Time Buy status of the LM1458MX. Alternative components with compatible electrical and mechanical parameters ensure design continuity and long-term supply chain reliability.
Substiute Parts
Key Parameters
| Parameter | LM1458MX Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 2 | — |
| Slew Rate | 0.5 | V/µs |
| Gain Bandwidth Product | 1 | MHz |
| Current - Input Bias | 200 | nA |
| Voltage - Input Offset | 1 | mV |
| Current - Supply (x2 Channels) | 3 | mA |
| Current - Output / Channel | 20 | mA |
| Voltage - Supply Span (Min) | 36 | V |
| Voltage - Supply Span (Max) | 36 | V |
| Operating Temperature Range | 0 to 70 | °C |
| Mounting Type | Surface Mount | — |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the LM1458MX is determined by strict compatibility across electrical and mechanical parameters. The following criteria establish valid substitute relationships:
Primary Compatibility Criteria:
- Number of Circuits: Must equal 2
- Package / Case: Must be 8-SOIC (0.154", 3.90mm Width) or mechanically equivalent 8-SOP
- Mounting Type: Surface Mount
- Voltage - Supply Span: Must support minimum 36V operation
- RoHS Status: ROHS3 Compliant
- Moisture Sensitivity Level: 1 (Unlimited)
Secondary Performance Parameters:
- Slew Rate: 0.5V/µs or greater
- Gain Bandwidth Product: 1 MHz or greater
- Current - Input Bias: 200 nA or lower
- Voltage - Input Offset: 1 mV or lower
- Current - Output / Channel: 20 mA or greater
- Operating Temperature: Must include 0°C to 70°C range or broader
Substitute parts are grouped into two categories: direct equivalents (identical amplifier type and specifications) and functional alternatives (different amplifier type with superior or equivalent performance characteristics).
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Slew Rate (V/µs) | GBW (MHz) | Input Bias (nA) | Input Offset (mV) | Supply Span (V) | Output Current (mA) | Temp Range (°C) | Package | Status |
|---|---|---|---|---|---|---|---|---|---|---|---|
| LM1458MX | Texas Instruments | General Purpose | 0.5 | 1 | 200 | 1 | 36 | 20 | 0 to 70 | 8-SOIC | Last Time Buy |
| LM1458MX/NOPB | National Semiconductor | General Purpose | 0.5 | 1 | 200 | 1 | 36 | — | 0 to 70 | 8-SOIC | Active |
| ADA4062-2ARZ-R7 | Analog Devices Inc. | J-FET | 3.3 | 1.4 | 0.002 | 0.75 | 8 to 36 | 20 | -40 to 125 | 8-SOIC | Active |
| ADA4062-2BRZ | Analog Devices Inc. | J-FET | 3.3 | 1.4 | 0.002 | 0.5 | 8 to 36 | 20 | -40 to 125 | 8-SOIC | Active |
| BA3404F-E2 | Rohm Semiconductor | General Purpose | 1.2 | 1.2 | 70 | 2 | 4 to 36 | 30 | -40 to 85 | 8-SOP | Active |
| BA4558F-E2 | Rohm Semiconductor | General Purpose | 1.2 | 2 | 60 | 0.5 | 8 to 30 | 10 | -40 to 85 | 8-SOP | Active |
| BA4560F-E1 | Rohm Semiconductor | General Purpose | 4 | 10 | 50 | 0.5 | 8 to 30 | 25 | -40 to 85 | 8-SOP | Active |
| BA4560F-E2 | Rohm Semiconductor | General Purpose | 4 | 10 | 50 | 0.5 | 8 to 30 | 25 | -40 to 85 | 8-SOP | Active |
| LF253DT | STMicroelectronics | J-FET | 16 | 4 | 0.02 | 3 | 6 to 36 | 40 | -40 to 105 | 8-SOIC | Active |
| LF353DT | STMicroelectronics | J-FET | 16 | 4 | 0.02 | 3 | 6 to 36 | 40 | 0 to 70 | 8-SOIC | Active |
| LM258AWDT | STMicroelectronics | General Purpose | 0.6 | 1.1 | 20 | 1 | 3 to 30 | 60 | -40 to 105 | 8-SOIC | Active |
Engineering Selection Recommendations
Direct Equivalent (Recommended for Pin-Compatible Replacement):
LM1458MX/NOPB from National Semiconductor is the direct equivalent, offering identical electrical specifications and 8-SOIC packaging. This part maintains Active product status, ensuring continued availability and supply chain stability. Selection of this part eliminates design modification requirements.
General Purpose Amplifier Alternatives (Active Status):
BA3404F-E2, BA4558F-E2, BA4560F-E1, and BA4560F-E2 from Rohm Semiconductor are general-purpose amplifiers with 2 circuits in 8-SOP packaging. These parts support the required 36V supply span and maintain ROHS3 compliance and MSL 1 ratings. BA3404F-E2 provides the closest performance match with 1.2V/µs slew rate and 1.2 MHz gain bandwidth product. BA4558F-E2 and BA4560F-E2 offer enhanced performance with higher slew rates (1.2V/µs and 4V/µs respectively) and gain bandwidth products (2 MHz and 10 MHz). All three maintain Active product status with high inventory availability.
J-FET Amplifier Alternatives (Superior Performance):
ADA4062-2ARZ-R7 and ADA4062-2BRZ from Analog Devices Inc., along with LF253DT and LF353DT from STMicroelectronics, are J-FET amplifiers offering significantly lower input bias current (0.002 nA to 20 pA versus 200 nA) and higher slew rates (3.3V/µs to 16V/µs). These parts support the required 36V maximum supply span and maintain ROHS3 compliance and MSL 1 ratings. LF353DT matches the LM1458MX operating temperature range (0°C to 70°C) while providing superior performance characteristics. All J-FET alternatives maintain Active product status.
Compliance and Certification:
All substitute parts listed are ROHS3 compliant, REACH unaffected, and classified as MSL 1 (Unlimited). All parts carry ECCN EAR99 and HTSUS 8542.33.0001 classifications, matching the original part's regulatory status.
Frequently Asked Questions (FAQ)
Q: Can LM1458MX/NOPB be used as a direct replacement for LM1458MX?
A: Yes. LM1458MX/NOPB is electrically and mechanically identical to LM1458MX, with identical pin configuration, package dimensions (8-SOIC, 0.154" width), and electrical specifications. No circuit modifications are required. The primary difference is product status: LM1458MX/NOPB maintains Active status while LM1458MX is Last Time Buy.
Q: What is the difference between 8-SOIC and 8-SOP packaging?
A: Both are 8-pin surface mount packages with similar footprints. 8-SOIC (Small Outline Integrated Circuit) typically features 0.154" width, while 8-SOP (Small Outline Package) typically features 0.173" width. These dimensions are not interchangeable on PCBs designed for specific package types. Verify PCB footprint compatibility before substitution.
Q: Why do J-FET amplifiers (ADA4062, LF253, LF353) have lower input bias current than the LM1458MX?
A: J-FET input stages use junction field-effect transistors instead of bipolar transistors, resulting in input bias currents measured in picoamperes (pA) rather than nanoamperes (nA). This characteristic is inherent to J-FET topology and does not indicate superiority or inferiority—it represents a different amplifier architecture suitable for applications requiring extremely low input bias current.
Q: Can BA4558F-E2 or BA4560F-E2 replace LM1458MX in all applications?
A: BA4558F-E2 and BA4560F-E2 are functionally compatible with LM1458MX in terms of circuit count (2), package type (8-SOP), and supply voltage support (up to 30V maximum, versus 36V for LM1458MX). However, the maximum supply voltage is reduced from 36V to 30V. Verify that your application does not require operation above 30V supply voltage. Both parts offer superior slew rate and gain bandwidth product performance.
Q: What is the significance of Product Status (Active vs. Last Time Buy)?
A: Active status indicates the manufacturer continues production and supports long-term supply availability. Last Time Buy status indicates production has been discontinued, with remaining inventory available until depletion. Selecting Active status parts ensures design sustainability and eliminates future supply chain disruptions.
Q: Is LM258AWDT suitable as a replacement for LM1458MX?
A: LM258AWDT is a general-purpose dual amplifier in 8-SOIC packaging with Active status and AEC-Q100 automotive qualification. It supports the required 36V supply span and offers superior output current (60 mA versus 20 mA). However, the minimum supply voltage is reduced to 3V, and the maximum supply voltage is reduced to 30V. Verify that your application does not require operation above 30V supply voltage or below 3V supply voltage.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All substitute parts listed in this reference maintain ROHS3 compliance, matching the original LM1458MX compliance status. All parts are also REACH unaffected and classified as MSL 1 (Unlimited), ensuring compatibility with standard manufacturing and storage requirements.
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