TSX634AIYPT Equivalent & Substitute Parts

Part Overview

The TSX634AIYPT is an active linear amplifier integrated circuit manufactured by STMicroelectronics, classified as a CMOS 4-circuit operational amplifier in a 14-TSSOP surface mount package. This device is designed for rail-to-rail signal conditioning applications requiring low input bias current and automotive-grade reliability. The part maintains active product status with AEC-Q100 qualification, supporting supply voltages from 3.3 V to 16 V across an operating temperature range of -40°C to 125°C.

Equivalent and substitute parts are identified when alternative manufacturers offer devices with compatible electrical characteristics, identical package configurations, and matching functional specifications that permit direct replacement in circuit applications without design modification.

Substiute Parts

TSX634AIYPT

STMicroelectronicsIn Stock: 989TSX634AIYPT Datasheet

Current PartRFQ

TLC2254AIPWR

Texas InstrumentsIn Stock: 2263TLC2254AIPWR Datasheet

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TLV2254AIPWR

Texas InstrumentsIn Stock: 2038TLV2254AIPWR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TSX634AIYPT is determined by strict alignment across the following critical parameters:

Package Compatibility: All substitute parts must use the 14-TSSOP surface mount package with identical 0.173" (4.40mm) width specification to ensure mechanical fit and PCB layout compatibility.

Functional Configuration: Substitute devices must provide exactly 4 independent amplifier circuits with rail-to-rail output capability to maintain circuit functionality.

Electrical Performance Envelope: Substitute parts must operate within the defined supply voltage range (minimum 3.3 V to maximum 16 V) and support the full automotive operating temperature range of -40°C to 125°C.

Signal Characteristics: Input bias current, slew rate, and gain bandwidth product specifications establish the performance baseline. Substitute parts with equivalent or superior characteristics within these parameters are acceptable.

Compliance & Certification: All substitute parts must maintain ROHS3 compliance, MSL Level 1 rating, and active product status to ensure supply chain continuity and regulatory alignment.

The Texas Instruments TLC2254AIPWR and TLV2254AIPWR devices meet these substitution criteria through identical package geometry, matching circuit count, compatible supply voltage operation, and equivalent electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

TSX634AIYPT Primary Application: The STMicroelectronics TSX634AIYPT is specified for automotive-grade applications requiring AEC-Q100 qualification. This device supports the full supply voltage range of 3.3 V to 16 V and delivers 92 mA output current per channel, making it suitable for high-current signal conditioning in automotive control systems.

TLC2254AIPWR Substitution Criteria: The Texas Instruments TLC2254AIPWR operates within a minimum supply voltage of 4.4 V, which restricts its use in applications requiring 3.3 V operation. However, it maintains compatibility across the 4.4 V to 16 V range and delivers equivalent slew rate and gain bandwidth performance. The TLC2254AIPWR exhibits superior input offset voltage specification (200 µV versus 700 µV), reducing DC error in precision applications. Output current per channel is limited to 50 mA, which may constrain high-current load applications.

TLV2254AIPWR Substitution Criteria: The Texas Instruments TLV2254AIPWR operates within a reduced supply voltage range of 2.7 V to 8 V, which is incompatible with applications requiring operation above 8 V. This device is suitable only for low-voltage applications within its specified envelope. The TLV2254AIPWR provides superior input offset voltage (200 µV) and lower supply current (140 µA total) compared to the TSX634AIYPT, offering advantages in battery-powered or low-power applications operating within the 2.7 V to 8 V range.

Compliance Status: All three devices maintain active product status, ROHS3 compliance, and MSL Level 1 moisture sensitivity rating, ensuring regulatory alignment and supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can the TLC2254AIPWR directly replace the TSX634AIYPT in all applications?

A: The TLC2254AIPWR is compatible only in applications where the supply voltage remains at or above 4.4 V. Applications requiring 3.3 V operation cannot use the TLC2254AIPWR. Additionally, the reduced output current per channel (50 mA versus 92 mA) may limit use in high-current applications.

Q: What is the primary limitation of the TLV2254AIPWR as a substitute?

A: The TLV2254AIPWR operates only within a 2.7 V to 8 V supply voltage range. It cannot be used in applications requiring supply voltages above 8 V or in systems designed for the full 3.3 V to 16 V range of the TSX634AIYPT.

Q: Are all three devices pin-compatible?

A: Yes. All three devices use the 14-TSSOP package with identical 0.173" (4.40mm) width, ensuring mechanical and electrical pin compatibility for direct PCB replacement.

Q: How do the input offset voltage specifications compare?

A: The TSX634AIYPT specifies 700 µV input offset voltage, while both Texas Instruments substitutes (TLC2254AIPWR and TLV2254AIPWR) specify 200 µV. The lower offset voltage of the Texas Instruments devices provides improved DC accuracy in precision signal conditioning applications.

Q: Which substitute is appropriate for automotive applications?

A: The TSX634AIYPT carries AEC-Q100 automotive qualification. The Texas Instruments substitutes do not list automotive qualification in the provided specifications. Applications requiring automotive-grade certification should retain the TSX634AIYPT.

Q: What is the impact of supply current differences on circuit design?

A: The TSX634AIYPT draws 45 µA total supply current, while the TLC2254AIPWR draws 160 µA and the TLV2254AIPWR draws 140 µA. In battery-powered applications, the lower supply current of the TSX634AIYPT provides extended operating life. In line-powered applications, this difference is typically negligible.

Q: Can the TLV2254AIPWR be used in a 12 V automotive system?

A: No. The TLV2254AIPWR maximum supply voltage is 8 V, making it unsuitable for 12 V automotive systems. The TLC2254AIPWR or TSX634AIYPT must be used for applications requiring operation at 12 V or higher.

Q: Are there any packaging or moisture sensitivity differences between the three devices?

A: All three devices use identical 14-TSSOP packaging and maintain MSL Level 1 (Unlimited) moisture sensitivity rating. No packaging or moisture handling differences exist between the devices.