TLC27L7CPSR Equivalent & Substitute Parts

Part Overview

The TLC27L7CPSR 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 TLC27L7CPSR is currently designated as Last Time Buy, indicating that the manufacturer has ceased production and existing inventory represents the final availability window. Identifying equivalent and substitute parts is essential for design continuity, long-term product support, and supply chain resilience.

Substiute Parts

TLC27L7CPSR

Texas InstrumentsIn Stock: 1896TLC27L7CPSR Datasheet

Current PartRFQ

TLC27L7CDR

Texas InstrumentsIn Stock: 2093TLC27L7CDR Datasheet

MFR RecommendedRFQ

LM432MA/NOPB

Texas InstrumentsIn Stock: 894LM432MA/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLC27L7CPSR is determined by strict alignment across the following critical parameters:

Primary Substitution Criteria:

• Amplifier Type: CMOS
• Number of Circuits: 2
• Slew Rate: 0.03 V/µs
• Gain Bandwidth Product: 110 kHz
• Current - Input Bias: 0.6 pA
• Voltage - Input Offset: 1.1 mV
• Current - Supply: 20 µA (x2 Channels)
• Current - Output / Channel: 30 mA
• Voltage - Supply Span (Min): 3 V
• Voltage - Supply Span (Max): 16 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Package Compatibility: The TLC27L7CPSR is supplied in 8-SO packaging (0.209", 5.30mm Width). Substitute parts must maintain electrical and mechanical compatibility within the 8-SOIC package family, with pin-to-pin compatibility verified.

Identified Substitutes:

Primary Substitute (Manufacturer Recommended): TLC27L7CDR

• Identical electrical specifications to TLC27L7CPSR
• Active product status (ongoing availability)
• 8-SOIC package (0.154", 3.90mm Width) — narrower pitch variant
• Same base product number (TLC27L7)
• ROHS3 Compliant, MSL 1

Secondary Substitute (Functional Alternative): LM432MA/NOPB

• Dual-channel general-purpose amplifier
• Obsolete product status
• Different electrical characteristics (higher gain bandwidth product: 1 MHz; higher input bias current: 3 nA; higher supply current: 150 µA)
• Extended operating temperature range: -40°C ~ 85°C
• 8-SOIC package (0.154", 3.90mm Width)
• ROHS3 Compliant, MSL 1

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Recommended): The TLC27L7CDR is the primary substitute for the TLC27L7CPSR. Both devices share identical electrical specifications, including slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current ratings. The TLC27L7CDR maintains Active product status, ensuring long-term availability and supply chain continuity. Both parts are ROHS3 Compliant with MSL 1 rating. The primary difference is package width (0.154" versus 0.209"), which requires PCB layout verification for mechanical fit but does not affect electrical performance or pin functionality.

For Extended Temperature Range Applications: The LM432MA/NOPB provides an extended operating temperature range (-40°C ~ 85°C) compared to the TLC27L7CPSR (0°C ~ 70°C). However, this substitute exhibits significantly different electrical characteristics: gain bandwidth product of 1 MHz (versus 110 kHz), input bias current of 3 nA (versus 0.6 pA), and supply current of 150 µA per channel (versus 20 µA). The LM432MA/NOPB is designated Obsolete, limiting future availability. Selection of this part is appropriate only when extended temperature operation is a mandatory requirement and the higher bandwidth and supply current are acceptable within the application design.

Compliance Considerations: All three parts maintain ROHS3 compliance and REACH Unaffected status, satisfying regulatory requirements for electronics manufacturing and distribution.

Frequently Asked Questions (FAQ)

Q1: Can the TLC27L7CDR be used as a direct replacement for the TLC27L7CPSR?

A: Yes. The TLC27L7CDR is electrically identical to the TLC27L7CPSR across all specified parameters: slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current. The primary difference is package width (0.154" versus 0.209"). PCB layout must be verified to confirm mechanical compatibility with the narrower 8-SOIC package footprint. Pin configuration and electrical function are identical.

Q2: Why is the TLC27L7CDR recommended over the LM432MA/NOPB?

A: The TLC27L7CDR maintains electrical equivalence to the TLC27L7CPSR, including the critical low-power CMOS characteristics (0.6 pA input bias current, 20 µA supply current per channel). The LM432MA/NOPB is a general-purpose amplifier with significantly higher supply current (150 µA), higher input bias current (3 nA), and higher gain bandwidth product (1 MHz). These differences alter circuit behavior and power consumption. Additionally, the TLC27L7CDR is Active, while the LM432MA/NOPB is Obsolete, limiting future availability.

Q3: What is the impact of the package width difference between TLC27L7CPSR and TLC27L7CDR?

A: The TLC27L7CPSR uses an 8-SOIC package with 0.209" width, while the TLC27L7CDR uses an 8-SOIC package with 0.154" width. Both are surface mount packages with identical pin counts and pin spacing. The narrower package of the TLC27L7CDR requires verification that the PCB footprint accommodates the reduced body width. Pin-to-pin electrical connections remain unchanged. Mechanical fit must be confirmed during design review.

Q4: Is the LM432MA/NOPB suitable for applications requiring the TLC27L7CPSR specifications?

A: The LM432MA/NOPB is not recommended as a primary substitute due to significant electrical differences. The higher supply current (150 µA versus 20 µA) and higher input bias current (3 nA versus 0.6 pA) make it unsuitable for low-power applications designed around the TLC27L7CPSR. The LM432MA/NOPB is appropriate only when extended operating temperature range (-40°C ~ 85°C) is a mandatory requirement and the application can tolerate higher power consumption and different frequency response (1 MHz bandwidth versus 110 kHz).

Q5: What is the significance of the TLC27L7CPSR being designated "Last Time Buy"?

A: Last Time Buy status indicates that Texas Instruments has ceased production of the TLC27L7CPSR and existing inventory represents the final availability window. Once current stock is depleted, the part will no longer be available from the manufacturer. Transitioning to the TLC27L7CDR (Active status) ensures continued access to an electrically equivalent device and protects against future supply discontinuation.

Q6: Are all three parts compliant with RoHS and REACH regulations?

A: Yes. The TLC27L7CPSR, TLC27L7CDR, and LM432MA/NOPB are all ROHS3 Compliant and REACH Unaffected. All three parts satisfy current environmental and regulatory requirements for electronics manufacturing and distribution.

Q7: What is the Moisture Sensitivity Level (MSL) for these parts, and what does it mean?

A: All three parts carry an MSL rating of 1 (Unlimited), indicating unlimited shelf life without moisture exposure controls. These parts do not require special moisture-sensitive device (MSD) handling procedures, simplifying storage, transportation, and assembly processes.