TLC27L2CPSR Equivalent & Substitute Parts

Part Overview

The TLC27L2CPSR is a CMOS dual-channel operational amplifier manufactured by Texas Instruments, part of the LinCMOS™ series. This device integrates two independent amplifier circuits in an 8-SO surface mount package and is designed for low-power, general-purpose analog signal processing applications. The part is currently in Last Time Buy status, indicating discontinued production with limited inventory availability. Identifying equivalent and substitute parts is necessary to ensure design continuity and long-term supply chain reliability for applications currently utilizing this component.

Substiute Parts

TLC27L2CPSR

Texas InstrumentsIn Stock: 1695TLC27L2CPSR Datasheet

Current PartRFQ

TLC27L2CDR

Texas InstrumentsIn Stock: 105247TLC27L2CDR Datasheet

MFR RecommendedRFQ

LM432MA/NOPB

Texas InstrumentsIn Stock: 894LM432MA/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLC27L2CPSR is determined by the following critical parameters:

Primary Substitution Criteria:

• Amplifier Type: CMOS technology
• Number of Circuits: Dual-channel (2 circuits)
• Slew Rate: 0.03 V/µs
• Gain Bandwidth Product: 110 kHz
• Input Bias Current: 0.6 pA
• Input Offset Voltage: 1.1 mV
• Supply Current: 20 µA per channel
• Output Current Capability: 30 mA per channel
• Supply Voltage Range: 3 V to 16 V
• Package Compatibility: 8-SOIC surface mount configuration
• Compliance: ROHS3 Compliant, MSL Level 1

Secondary Considerations:

• Operating temperature range compatibility
• Packaging format (Tape & Reel vs. Cut Tape vs. Tube)
• Product status and availability

The TLC27L2CDR qualifies as a direct manufacturer-recommended substitute, maintaining identical electrical specifications while differing only in packaging format and physical package dimensions. The LM432MA/NOPB represents a functional alternative with different electrical characteristics and product status, suitable only where application requirements permit deviation from the original specifications.

Parameter Comparison

Engineering Selection Recommendations

TLC27L2CDR (Manufacturer-Recommended Substitute):

The TLC27L2CDR is the primary substitute for the TLC27L2CPSR. This part maintains identical electrical specifications across all critical parameters: CMOS amplifier type, dual-channel configuration, 110 kHz gain bandwidth product, 0.03 V/µs slew rate, 0.6 pA input bias current, and 1.1 mV input offset voltage. Both parts operate within the 3 V to 16 V supply range and deliver 30 mA output current per channel. The TLC27L2CDR is currently in Active product status with significantly higher inventory availability (105,200 units) compared to the Last Time Buy status of the TLC27L2CPSR (1,620 units). Both parts are ROHS3 Compliant with MSL Level 1 rating. The primary difference is packaging format: the TLC27L2CPSR uses Tape & Reel packaging with 5.30mm package width, while the TLC27L2CDR uses Cut Tape & Digi-Reel® format with 3.90mm package width. PCB layout and assembly equipment compatibility must be evaluated for the package dimension difference.

LM432MA/NOPB (Functional Alternative):

The LM432MA/NOPB is classified as a functional alternative rather than a direct substitute. While this part shares the dual-channel 8-SOIC package configuration and identical output current capability (30 mA per channel), it differs significantly in electrical characteristics. The LM432MA/NOPB is a general-purpose amplifier with 1 MHz gain bandwidth product (versus 110 kHz), 3 nA input bias current (versus 0.6 pA), and 150 µA supply current per channel (versus 20 µA). These differences result in higher power consumption and different frequency response characteristics. The LM432MA/NOPB operates across a wider temperature range (-40°C to 85°C) and lower minimum supply voltage (2.5 V). However, this part is currently in Obsolete product status with limited inventory (869 units). Selection of the LM432MA/NOPB is appropriate only when application requirements specifically permit the higher bandwidth, higher input bias current, and increased power consumption, and when the wider operating temperature range provides design advantage.

Frequently Asked Questions (FAQ)

Q1: Can the TLC27L2CDR be used as a direct replacement for the TLC27L2CPSR without circuit modification?

A: The TLC27L2CDR is electrically identical to the TLC27L2CPSR across all specified parameters. However, the package dimensions differ: TLC27L2CPSR uses 8-SOIC with 5.30mm width, while TLC27L2CDR uses 8-SOIC with 3.90mm width. PCB footprint compatibility must be verified. If the PCB footprint accommodates the narrower 3.90mm package, no circuit modification is required. If the existing PCB footprint is designed specifically for the 5.30mm package, PCB redesign is necessary.

Q2: What are the key electrical differences between TLC27L2CPSR and LM432MA/NOPB?

A: The primary electrical differences are: (1) Gain Bandwidth Product: TLC27L2CPSR operates at 110 kHz, LM432MA/NOPB at 1 MHz; (2) Input Bias Current: TLC27L2CPSR at 0.6 pA, LM432MA/NOPB at 3 nA; (3) Supply Current: TLC27L2CPSR at 20 µA per channel, LM432MA/NOPB at 150 µA per channel. These differences affect frequency response, input impedance characteristics, and power consumption. The LM432MA/NOPB is suitable only for applications where higher bandwidth and wider temperature range are required and where increased power consumption is acceptable.

Q3: Why is the TLC27L2CPSR in Last Time Buy status?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of this part number. The TLC27L2CDR, which maintains identical electrical specifications, is the active replacement part. Customers should transition to the TLC27L2CDR for new designs and future production requirements.

Q4: Are all three parts ROHS3 compliant?

A: Yes. The TLC27L2CPSR, TLC27L2CDR, and LM432MA/NOPB are all ROHS3 Compliant with Moisture Sensitivity Level 1 (Unlimited). All parts are suitable for applications requiring environmental compliance certification.

Q5: What is the significance of the package width difference between TLC27L2CPSR (5.30mm) and TLC27L2CDR (3.90mm)?

A: The package width difference affects PCB footprint design and component placement density. The TLC27L2CDR's narrower 3.90mm width allows for higher component density on the PCB. However, existing PCB designs with footprints optimized for the 5.30mm TLC27L2CPSR package require verification or redesign to accommodate the narrower TLC27L2CDR package. Assembly equipment and pick-and-place programming may also require adjustment.

Q6: Can the LM432MA/NOPB be used in applications currently using TLC27L2CPSR?

A: The LM432MA/NOPB can be used only if the application requirements permit the following deviations: (1) higher gain bandwidth product (1 MHz versus 110 kHz); (2) significantly higher input bias current (3 nA versus 0.6 pA); (3) higher supply current consumption (150 µA versus 20 µA per channel); (4) lower input offset voltage (600 µV versus 1.1 mV). Applications sensitive to low-frequency response, input impedance, or power consumption may not be compatible with the LM432MA/NOPB. Circuit simulation and prototype testing are required to confirm functional compatibility.

Q7: What inventory considerations should guide part selection?

A: The TLC27L2CPSR has 1,620 units available in Last Time Buy status, indicating limited remaining supply. The TLC27L2CDR has 105,200 units in Active status, providing long-term supply assurance. The LM432MA/NOPB has 869 units in Obsolete status, indicating no future availability. For new designs and long-term production, the TLC27L2CDR is the recommended choice. For existing designs currently using TLC27L2CPSR, transition planning to TLC27L2CDR should begin immediately to avoid supply disruption.