TLC271CS-13 Equivalent & Substitute Parts

Part Overview

The TLC271CS-13 is a CMOS operational amplifier manufactured by Diodes Incorporated, designed for general-purpose signal conditioning and amplification applications. This single-circuit amplifier operates across a 3V to 16V supply range with low input bias current (0.7 pA) and moderate slew rate performance (4.6V/µs). The device is housed in an 8-SOIC surface mount package and maintains active product status with RoHS3 compliance. Substitute parts become necessary when addressing supply chain constraints, discontinued inventory status, or specific performance requirements within compatible electrical and mechanical parameters.

Substiute Parts

TLC271CS-13

Diodes IncorporatedIn Stock: 5371TLC271CS-13 Datasheet

Current PartRFQ

TLC251CDG4

Texas InstrumentsIn Stock: 907TLC251CDG4 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLC271CS-13 is determined by strict alignment across the following critical parameters:

Mechanical Compatibility: Package type must be 8-SOIC with identical 0.154" (3.90mm) width dimensions to ensure PCB footprint compatibility without layout redesign.

Electrical Compatibility: Gain bandwidth product must equal 2.2 MHz. Input bias current must not exceed 0.7 pA. Supply current must remain at 950µA. Output current capability must be at least 30 mA per channel. Operating temperature range must span 0°C to 70°C minimum.

Supply Voltage Range: The substitute part must operate across the full 3V to 16V supply span specified for the main part. Deviations in minimum or maximum supply voltage limits the substitution applicability.

Regulatory Compliance: RoHS3 compliance and REACH unaffected status are mandatory for direct substitution in regulated applications.

Single Circuit Configuration: The substitute must contain exactly one amplifier circuit to match the main part's functional density.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (TLC271CS-13): This part maintains active product status with 5300 units in stock, ensuring long-term availability for production and design continuity. RoHS3 compliance and REACH unaffected status satisfy regulatory requirements across global markets. The 3V minimum supply voltage specification is appropriate for battery-powered and low-voltage applications.

Substitute Selection (TLC251CDG4): The TLC251CDG4 from Texas Instruments provides functional equivalence with identical gain bandwidth product (2.2 MHz), input bias current (0.7 pA), and supply current (950µA). The substitute demonstrates superior performance in slew rate (5.3V/µs versus 4.6V/µs) and input offset voltage (1.1 mV versus 10 mV), making it suitable for applications requiring tighter offset specifications or faster transient response. However, this part is discontinued at DiGi Electronics, limiting its availability for new production. The lower minimum supply voltage (1.4V) extends operational range below the main part's 3V minimum, enabling use in ultra-low-voltage applications. Both parts share identical 8-SOIC packaging, RoHS3 compliance, and REACH unaffected status, ensuring direct PCB compatibility and regulatory alignment.

Selection Criteria: Choose TLC271CS-13 for active production requirements and assured supply chain continuity. Select TLC251CDG4 only when existing inventory is available and applications require the enhanced performance characteristics or lower minimum supply voltage operation.

Frequently Asked Questions (FAQ)

Q: Can the TLC251CDG4 replace the TLC271CS-13 in existing designs without PCB modification?

A: Yes. Both parts use identical 8-SOIC packaging with 0.154" (3.90mm) width, ensuring direct footprint compatibility. No PCB layout changes are required for mechanical substitution.

Q: What are the key electrical differences between these parts?

A: The TLC251CDG4 provides superior slew rate (5.3V/µs versus 4.6V/µs) and lower input offset voltage (1.1 mV versus 10 mV). The TLC251CDG4 also operates at lower minimum supply voltage (1.4V versus 3V). Both parts maintain identical gain bandwidth product (2.2 MHz), input bias current (0.7 pA), and supply current (950µA).

Q: Are both parts compliant with RoHS3 and REACH regulations?

A: Yes. Both TLC271CS-13 and TLC251CDG4 are RoHS3 compliant and REACH unaffected, meeting regulatory requirements for regulated markets and applications.

Q: Why is the TLC251CDG4 listed as discontinued?

A: The TLC251CDG4 is discontinued at DiGi Electronics, indicating limited future availability through standard distribution channels. The TLC271CS-13 maintains active status with 5300 units in stock, providing assured supply for production requirements.

Q: Which part should be selected for new product designs?

A: The TLC271CS-13 is the recommended choice for new designs due to active product status and confirmed inventory availability. The TLC251CDG4 should be considered only when existing stock is available and specific performance advantages (lower offset voltage, higher slew rate, or lower minimum supply voltage) are required by the application.

Q: Do both parts require identical PCB layout considerations?

A: Yes. Both parts use 8-SOIC surface mount packaging with identical pin configuration and spacing. Standard CMOS operational amplifier layout practices apply equally to both devices, including bypass capacitor placement and input impedance management.

Q: What is the moisture sensitivity level difference between these parts?

A: The TLC271CS-13 has MSL 3 (168 hours), while the TLC251CDG4 has MSL 1 (unlimited). The TLC251CDG4 demonstrates superior moisture resistance, reducing handling and storage constraints during manufacturing.