TS1874AIN Equivalent & Substitute Parts

Part Overview

The TS1874AIN is a general purpose operational amplifier manufactured by STMicroelectronics, featuring four independent amplifier circuits in a 14-DIP through-hole package. This device is classified as obsolete, making identification of equivalent and substitute components essential for ongoing system support, design updates, and procurement continuity. The rail-to-rail output configuration and low-voltage supply capability (1.8V to 6V) position this amplifier for portable and battery-powered applications requiring compact signal conditioning.

Substiute Parts

TS1874AIN

STMicroelectronicsIn Stock: 2223TS1874AIN Datasheet

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MCP6274-E/P

Microchip TechnologyIn Stock: 1950MCP6274-E/P Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TS1874AIN is determined by strict adherence to the following critical parameters:

Mandatory Matching Criteria:

• Amplifier Type: General Purpose
• Number of Circuits: 4 independent amplifier channels
• Output Type: Rail-to-Rail
• Package / Case: 14-DIP (0.300", 7.62mm) through-hole configuration
• Voltage Supply Range: Minimum 1.8V to Maximum 6V
• Operating Temperature Range: -40°C to 125°C
• RoHS3 Compliance and MSL Level 1 classification

Functional Performance Parameters: Substitute parts must maintain compatibility within the following electrical specifications: slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current per channel. Deviations in these parameters are acceptable only when the substitute part meets or exceeds the performance envelope of the original device.

The MCP6274-E/P manufactured by Microchip Technology qualifies as a direct substitute based on matching all mandatory criteria and providing enhanced or equivalent electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

TS1874AIN (Obsolete): This device is no longer in active production. Continued use is limited to existing inventory or legacy system maintenance. The obsolete status necessitates transition planning for new designs and long-term product support.

MCP6274-E/P (Active Substitute): This Microchip Technology component is actively manufactured and represents the recommended substitute for new designs and system updates. Both devices maintain ROHS3 compliance and MSL Level 1 classification, ensuring regulatory and environmental compatibility. The MCP6274-E/P provides superior electrical performance in slew rate (0.9V/µs vs. 0.6V/µs), gain bandwidth product (2.0 MHz vs. 1.8 MHz), and input bias current (1 pA vs. 70 nA), while reducing total supply current consumption (170µA vs. 500µA across four channels). The minimum supply voltage specification of the MCP6274-E/P is 2.0V compared to 1.8V for the TS1874AIN; applications requiring operation below 2.0V require verification against specific circuit requirements.

Frequently Asked Questions (FAQ)

Q: Can the MCP6274-E/P directly replace the TS1874AIN in existing PCB designs?

A: Yes. Both devices share identical 14-DIP through-hole package dimensions (0.300", 7.62mm) and pin configurations. No PCB modifications are required for physical substitution. Electrical performance of the MCP6274-E/P meets or exceeds the TS1874AIN across all specified parameters.

Q: What is the significance of the minimum supply voltage difference (1.8V vs. 2.0V)?

A: The TS1874AIN operates at a minimum supply voltage of 1.8V, while the MCP6274-E/P requires a minimum of 2.0V. For applications operating between 1.8V and 2.0V, the TS1874AIN is the only option among these two devices. For applications operating at 2.0V or higher, both devices are compatible.

Q: Why does the MCP6274-E/P have lower output current per channel (25 mA vs. 80 mA)?

A: Output current capability is a design trade-off. The MCP6274-E/P achieves superior slew rate and bandwidth performance while reducing power consumption. Applications requiring output currents exceeding 25 mA per channel must be evaluated against the specific load impedance and signal requirements.

Q: Are there compliance or regulatory differences between these devices?

A: No. Both the TS1874AIN and MCP6274-E/P are ROHS3 compliant, REACH unaffected, and classified as MSL Level 1 (unlimited moisture sensitivity). Both carry the same ECCN (EAR99) and HTSUS (8542.33.0001) classifications.

Q: What is the primary advantage of selecting the MCP6274-E/P over the TS1874AIN?

A: The MCP6274-E/P is actively manufactured, ensuring long-term availability and supply chain continuity. Additionally, it provides enhanced electrical performance, particularly in slew rate, bandwidth, and input bias current, while consuming significantly less supply current (170µA vs. 500µA total).

Q: Can both devices be used interchangeably in the same application?

A: Interchangeability depends on specific circuit requirements. Both devices are functionally equivalent for general purpose amplification in the 2.0V to 6.0V supply range. Applications operating below 2.0V require the TS1874AIN. Applications with output current requirements exceeding 25 mA per channel require the TS1874AIN. For all other applications within the specified parameter ranges, the MCP6274-E/P is the preferred choice due to active product status and superior performance characteristics.