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TLC27L2BCD Equivalent & Substitute Parts
Part Overview
The TLC27L2BCD is a CMOS dual-channel operational amplifier manufactured by Texas Instruments in the LinCMOS™ series. This device is packaged in an 8-SOIC surface mount configuration and operates across a 3V to 16V supply voltage range with an operating temperature range of 0°C to 70°C. The TLC27L2BCD is classified as an obsolete product, necessitating identification of equivalent and substitute components for ongoing design requirements and production continuity.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer Part Number | TLC27L2BCD | — |
| Manufacturer | Texas Instruments | — |
| Amplifier Type | CMOS | — |
| Number of Circuits | 2 | — |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Slew Rate | 0.03 | V/µs |
| Gain Bandwidth Product | 110 | kHz |
| Current - Input Bias | 0.6 | pA |
| Voltage - Input Offset | 204 | µV |
| Current - Supply | 20 (x2 Channels) | µA |
| Current - Output / Channel | 30 | mA |
| Voltage - Supply Span (Min) | 3 | V |
| Voltage - Supply Span (Max) | 16 | V |
| Operating Temperature | 0 to 70 | °C |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
| Product Status | Obsolete | — |
Substitute Part Grouping Explanation
Substitution of the TLC27L2BCD is determined by the following critical parameters: dual-channel CMOS amplifier configuration, 8-SOIC package format, supply voltage range of 3V to 16V, and surface mount mounting type. Substitute parts must maintain electrical compatibility within these core specifications.
The substitute parts are grouped into two categories based on their electrical performance characteristics and product status:
Category 1: Direct Electrical Equivalents (LinCMOS™ Series) Parts maintaining identical or near-identical slew rate (0.03–0.04 V/µs) and gain bandwidth product (100–110 kHz) specifications. These include TLC27L2BCDR, TLC27L7CD, TS27L2ACDT, and TS27L2AIDT. These devices preserve the low-speed, low-power operational characteristics of the original TLC27L2BCD.
Category 2: Enhanced Performance Alternatives (TS272 Series) Parts with significantly higher slew rate (5.5 V/µs) and gain bandwidth product (3.5 MHz). These include TS272ACDT, TS272AIDT, TS272BIDT, and TS272CDT, TS272IDT. These devices offer improved frequency response and faster signal processing while maintaining the dual-channel CMOS architecture and 8-SOIC package.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Packaging | Slew Rate (V/µs) | GBW (kHz) | Input Bias (pA) | Input Offset (µV) | Supply Current (µA) | Output Current (mA) | Temp Range (°C) |
|---|---|---|---|---|---|---|---|---|---|---|
| TLC27L2BCD | Texas Instruments | Obsolete | Tube | 0.03 | 110 | 0.6 | 204 | 20 | 30 | 0 to 70 |
| TLC27L2BCDR | Texas Instruments | Active | Tape & Reel | 0.03 | 110 | 0.6 | 204 | 20 | 30 | 0 to 70 |
| TLC27L7CD | Texas Instruments | Last Time Buy | Tube | 0.03 | 110 | 0.6 | 1100 | 20 | 30 | 0 to 70 |
| TS27L2ACDT | STMicroelectronics | Active | Tape & Reel | 0.04 | 100 | 1 | 900 | 10 | 45 | 0 to 70 |
| TS27L2AIDT | STMicroelectronics | Active | Cut Tape | 0.04 | 100 | 1 | 1100 | 10 | 45 | -40 to 125 |
| TS272ACDT | STMicroelectronics | Active | Cut Tape | 5.5 | 3500 | 1 | 900 | 1000 | 45 | 0 to 70 |
| TS272AIDT | STMicroelectronics | Active | Cut Tape | 5.5 | 3500 | 1 | 900 | 1000 | 45 | -40 to 125 |
| TS272BIDT | STMicroelectronics | Active | Tape & Reel | 5.5 | 3500 | 1 | 250 | 1000 | 45 | -40 to 125 |
| TS272CDT | STMicroelectronics | Active | Cut Tape | 5.5 | 3500 | 1 | 1100 | 1000 | 45 | 0 to 70 |
| TS272IDT | STMicroelectronics | Active | Tape & Reel | 5.5 | 3500 | 1 | 1100 | 1000 | 45 | -40 to 125 |
| LM432MA/NOPB | Texas Instruments | Obsolete | Tube | — | 1000 | 3 | 600 | 150 | 30 | -40 to 85 |
Engineering Selection Recommendations
For Direct Replacement (Identical Electrical Performance):
TLC27L2BCDR is the primary recommended substitute. This part maintains identical electrical specifications to the TLC27L2BCD while offering active product status from Texas Instruments. The only difference is packaging format: TLC27L2BCDR is supplied in Tape & Reel format instead of Tube. Both parts are ROHS3 compliant and carry identical REACH and ECCN classifications. This substitution requires no circuit redesign and provides the highest compatibility assurance.
For Extended Temperature Range Applications:
TS27L2AIDT (STMicroelectronics) provides an extended operating temperature range of -40°C to 125°C compared to the original 0°C to 70°C specification. Electrical performance remains comparable with slew rate of 0.04 V/µs and gain bandwidth product of 100 kHz. Supply current is reduced to 10 µA per channel. This part is suitable for applications requiring wider temperature operation while maintaining low-frequency amplifier characteristics.
For Enhanced Frequency Response Applications:
TS272 series devices (TS272ACDT, TS272AIDT, TS272BIDT, TS272CDT, TS272IDT) offer significantly improved performance with slew rate of 5.5 V/µs and gain bandwidth product of 3.5 MHz. These parts are appropriate for applications requiring faster signal processing and higher frequency operation. TS272BIDT provides the lowest input offset voltage (250 µV) and extended temperature range (-40°C to 125°C). All TS272 variants are active products with ROHS3 compliance.
Product Status Considerations:
TLC27L2BCD is classified as obsolete. TLC27L2BCDR (active status) is the recommended direct replacement. TLC27L7CD carries Last Time Buy status, indicating limited future availability. All TS272 series and TS27L2 series variants from STMicroelectronics maintain active product status, ensuring long-term supply availability.
Frequently Asked Questions (FAQ)
Q: Can TLC27L2BCDR be used as a direct drop-in replacement for TLC27L2BCD?
A: Yes. TLC27L2BCDR is electrically identical to TLC27L2BCD with matching slew rate (0.03 V/µs), gain bandwidth product (110 kHz), input bias current (0.6 pA), and all other electrical parameters. The only difference is packaging format: TLC27L2BCDR uses Tape & Reel packaging while TLC27L2BCD uses Tube packaging. No circuit modifications are required.
Q: What is the difference between the TS27L2 and TS272 series?
A: The TS27L2 series maintains low-frequency amplifier characteristics with slew rate of 0.04 V/µs and gain bandwidth product of 100 kHz, comparable to the original TLC27L2BCD. The TS272 series offers enhanced performance with slew rate of 5.5 V/µs and gain bandwidth product of 3.5 MHz, suitable for higher-frequency applications. Both series use the same 8-SOIC package and dual-channel CMOS architecture.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All substitute parts listed—TLC27L2BCDR, TLC27L7CD, TS27L2ACDT, TS27L2AIDT, TS272ACDT, TS272AIDT, TS272BIDT, TS272CDT, TS272IDT, and LM432MA/NOPB—are ROHS3 compliant. All carry identical REACH Unaffected and EAR99 ECCN classifications.
Q: What packaging options are available for substitute parts?
A: Substitute parts are available in three packaging formats: Tube, Tape & Reel (TR), and Cut Tape (CT) & Digi-Reel®. TLC27L2BCDR is supplied in Tape & Reel format. TS27L2ACDT is supplied in Tape & Reel format. TS272 series variants are available in both Cut Tape and Tape & Reel formats depending on the specific part number suffix.
Q: Which substitute part offers the widest operating temperature range?
A: TS27L2AIDT, TS272AIDT, TS272BIDT, and TS272IDT all offer an extended operating temperature range of -40°C to 125°C, compared to the original TLC27L2BCD specification of 0°C to 70°C. These parts are suitable for applications requiring operation in extreme temperature environments.
Q: What is the supply current difference between TLC27L2BCD and TS272 series?
A: TLC27L2BCD draws 20 µA per channel (40 µA total for dual channels). TS272 series devices draw 1 mA per channel (2 mA total for dual channels). This 50-fold increase in supply current is offset by significantly improved frequency response and slew rate performance in the TS272 series.
Q: Can LM432MA/NOPB be used as a substitute?
A: LM432MA/NOPB is a general-purpose amplifier with different electrical characteristics. While it maintains the dual-channel configuration and 8-SOIC package, it has higher input bias current (3 nA vs. 0.6 pA), higher supply current (150 µA vs. 20 µA), and higher gain bandwidth product (1 MHz vs. 110 kHz). This part is classified as obsolete and is not recommended as a primary substitute due to performance differences and product status.
Q: What is the moisture sensitivity level for all substitute parts?
A: All substitute parts carry Moisture Sensitivity Level (MSL) rating of 1 (Unlimited), identical to the original TLC27L2BCD. This indicates no moisture sensitivity precautions are required during storage or handling.
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