TLC277CPS Equivalent & Substitute Parts

Part Overview

The TLC277CPS is a CMOS linear amplifier integrated circuit manufactured by Texas Instruments, configured as a dual-channel operational amplifier in an 8-SO surface mount package. This device operates across a 3V to 16V supply voltage range and is designed for applications requiring low input bias current and low input offset voltage characteristics typical of CMOS amplifier designs.

The TLC277CPS carries a Last Time Buy product status, indicating that Texas Instruments has discontinued active production. This status necessitates identification of equivalent and substitute parts to ensure design continuity and procurement availability for ongoing production requirements and field support applications.

Substiute Parts

TLC277CPS

Texas InstrumentsIn Stock: 2427TLC277CPS Datasheet

Current PartRFQ

TLC277CDR

Texas InstrumentsIn Stock: 3245TLC277CDR Datasheet

MFR RecommendedRFQ

LM432MA/NOPB

Texas InstrumentsIn Stock: 894LM432MA/NOPB Datasheet

MFR RecommendedRFQ

AP4310AMTR-AG1

Diodes IncorporatedIn Stock: 1464AP4310AMTR-AG1 Datasheet

MFR RecommendedRFQ

AP4310AMTR-G1

Diodes IncorporatedIn Stock: 888339AP4310AMTR-G1 Datasheet

MFR RecommendedRFQ

AP4310AUMTR-AG1

Diodes IncorporatedIn Stock: 1144AP4310AUMTR-AG1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLC277CPS is determined by the following critical parameters:

Primary Substitution Criteria:

• Amplifier Type: CMOS technology with equivalent input characteristics
• Number of Circuits: Dual-channel configuration (2 circuits)
• Slew Rate: Minimum 5.3 V/µs for signal fidelity
• Gain Bandwidth Product: 2.2 MHz operational bandwidth
• Input Bias Current: Maximum 0.7 pA (ultra-low leakage requirement)
• Input Offset Voltage: Maximum 1.1 mV
• Supply Voltage Range: 3V to 16V compatibility
• Output Current Capability: Minimum 30 mA per channel
• Operating Temperature: 0°C to 70°C minimum coverage
• Package Compatibility: 8-SOIC surface mount configuration
• Compliance: ROHS3 and REACH requirements

Substitute Categories:

Category 1 - Direct Manufacturer Equivalent (Texas Instruments LinCMOS™ Series): TLC277CDR represents the direct equivalent from the same manufacturer and product series, with identical electrical specifications and CMOS amplifier architecture. This part differs only in packaging format (Cut Tape & Digi-Reel® versus Tube) and package width tolerance (3.90mm versus 5.30mm).

Category 2 - General Purpose Amplifier Substitutes (Reduced Performance Specifications): LM432MA/NOPB, AP4310AMTR-AG1, AP4310AMTR-G1, and AP4310AUMTR-AG1 function as operational amplifiers with dual-channel configuration but operate with different electrical characteristics. These parts do not maintain CMOS amplifier type specifications and exhibit reduced slew rate and gain bandwidth product performance compared to the TLC277CPS.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: TLC277CDR

The TLC277CDR is the preferred substitute for the TLC277CPS. Both devices are manufactured by Texas Instruments within the LinCMOS™ series and maintain identical electrical specifications across all critical parameters: CMOS amplifier type, dual-channel configuration, 5.3 V/µs slew rate, 2.2 MHz gain bandwidth product, 0.7 pA input bias current, and 1.1 mV input offset voltage. The TLC277CDR carries Active product status, ensuring long-term availability and supply chain continuity. Both parts are ROHS3 compliant with MSL 1 rating. The only differences are packaging format (Cut Tape & Digi-Reel® versus Tube) and package width tolerance (3.90mm versus 5.30mm), which do not affect electrical performance or functional compatibility in circuit applications.

Secondary Recommendation: AP4310AUMTR-AG1

The AP4310AUMTR-AG1 manufactured by Diodes Incorporated serves as a secondary substitute when TLC277CDR availability is constrained. This part maintains dual-channel configuration, 8-SOIC surface mount package, and ROHS3 compliance. However, this device operates as a general purpose amplifier rather than CMOS type, with reduced slew rate (0.5 V/µs versus 5.3 V/µs), reduced gain bandwidth product (1 MHz versus 2.2 MHz), and significantly higher input bias current (20 nA versus 0.7 pA). The AP4310AUMTR-AG1 carries Active product status and MSL 1 rating. Extended supply voltage range (3V to 36V) and wider operating temperature range (-40°C to 105°C) provide additional design flexibility for applications not requiring CMOS-specific performance characteristics.

Not Recommended: LM432MA/NOPB

The LM432MA/NOPB carries Obsolete product status and should not be selected for new designs or ongoing production. Although this part provides dual-channel configuration and ROHS3 compliance, its obsolete status creates supply chain risk and long-term availability concerns.

Not Recommended: AP4310AMTR-AG1 and AP4310AMTR-G1

These Diodes Incorporated parts exhibit identical electrical specifications to AP4310AUMTR-AG1 but carry MSL 3 rating (168 Hours) versus MSL 1 (Unlimited) for the AP4310AUMTR-AG1. MSL 3 classification imposes moisture sensitivity handling requirements that increase manufacturing complexity and cost. The AP4310AMTR-G1 variant offers significantly higher inventory availability (888,300 pcs) but does not justify selection over AP4310AUMTR-AG1 due to inferior moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q1: Can TLC277CDR be used as a direct replacement for TLC277CPS without circuit modification?

A: Yes. The TLC277CDR maintains identical electrical specifications across all functional parameters: CMOS amplifier type, dual-channel configuration, slew rate (5.3 V/µs), gain bandwidth product (2.2 MHz), input bias current (0.7 pA), input offset voltage (1.1 mV), supply voltage range (3V to 16V), and output current capability (30 mA per channel). Both devices are surface mount 8-SOIC packages with ROHS3 compliance. The package width difference (3.90mm versus 5.30mm) does not affect electrical performance or PCB layout compatibility for standard 8-SOIC footprints.

Q2: What are the key differences between TLC277CPS and the Diodes Incorporated AP4310 series substitutes?

A: The primary differences are amplifier architecture and performance specifications. TLC277CPS is a CMOS amplifier with 5.3 V/µs slew rate and 2.2 MHz bandwidth. AP4310 series devices are general purpose amplifiers with 0.5 V/µs slew rate and 1 MHz bandwidth. Input bias current differs significantly: TLC277CPS operates at 0.7 pA (ultra-low leakage), while AP4310 series operates at 20 nA (approximately 28,000 times higher). Supply current consumption is also lower in TLC277CPS (1.9 mA per channel) compared to AP4310 series (150 µA per channel). These differences make AP4310 series suitable only for applications where CMOS performance characteristics are not critical.

Q3: Why is LM432MA/NOPB not recommended despite being listed as a substitute?

A: The LM432MA/NOPB carries Obsolete product status, indicating that Texas Instruments has discontinued production and support. Obsolete components create supply chain risk, as inventory is limited to existing stock with no guarantee of future availability. For new designs and ongoing production, Active status components ensure long-term procurement reliability. Additionally, LM432MA/NOPB exhibits reduced performance specifications compared to TLC277CPS, including lower gain bandwidth product (1 MHz versus 2.2 MHz) and higher input bias current (3 nA versus 0.7 pA).

Q4: What is the significance of Moisture Sensitivity Level (MSL) ratings in substitute selection?

A: MSL ratings define the maximum time a component can be exposed to ambient moisture before soldering without baking. TLC277CPS and TLC277CDR carry MSL 1 (Unlimited), meaning no moisture sensitivity restrictions apply. AP4310AUMTR-AG1 also carries MSL 1. However, AP4310AMTR-AG1 and AP4310AMTR-G1 carry MSL 3 (168 Hours), requiring components to be baked before soldering if storage time exceeds 168 hours at specified humidity levels. This adds manufacturing process complexity and cost. For procurement and manufacturing efficiency, MSL 1 rated components are preferred.

Q5: Can AP4310AMTR-G1 be used instead of AP4310AUMTR-AG1 given its higher inventory availability?

A: While AP4310AMTR-G1 offers significantly higher inventory (888,300 pcs versus 1,065 pcs for AP4310AUMTR-AG1), it carries MSL 3 rating versus MSL 1 for AP4310AUMTR-AG1. This moisture sensitivity difference creates manufacturing process requirements that increase cost and complexity. Unless inventory constraints are critical, AP4310AUMTR-AG1 is the preferred choice due to superior moisture handling characteristics and lower manufacturing burden.

Q6: What operating temperature range considerations apply when substituting TLC277CPS?

A: TLC277CPS operates across 0°C to 70°C. TLC277CDR maintains identical temperature range. Substitute parts from Diodes Incorporated (AP4310 series) operate across -40°C to 105°C, providing extended temperature coverage. If the application requires operation below 0°C or above 70°C, AP4310 series substitutes provide additional thermal margin. However, if the design specification is limited to 0°C to 70°C, this extended range does not provide functional advantage and does not justify selection over TLC277CDR based on temperature performance alone.

Q7: Are there package footprint compatibility issues between TLC277CPS and substitute parts?

A: All substitute parts use 8-SOIC surface mount packages. TLC277CPS specifies 8-SOIC (0.209", 5.30mm Width), while TLC277CDR and all AP4310 variants specify 8-SOIC (0.154", 3.90mm Width). The width difference reflects different SOIC body widths but does not affect pin pitch (0.050" standard for all variants) or lead positioning. Standard 8-SOIC PCB footprints accommodate both width tolerances. No PCB layout modification is required for substitution.

Q8: What supply voltage range considerations apply to substitute selection?

A: TLC277CPS and TLC277CDR operate across 3V to 16V supply range. LM432MA/NOPB operates across 2.5V to 16V (lower minimum). AP4310 series operates across 3V to 36V (extended maximum). If the application requires operation below 3V, LM432MA/NOPB provides additional margin, but its Obsolete status makes it unsuitable for new designs. If the application requires operation above 16V, AP4310 series provides extended range capability. For standard 3V to 16V applications, TLC277CDR is the optimal choice.