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TLC27L2CD Equivalent & Substitute Parts
Part Overview
The TLC27L2CD 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 range with an operating temperature range of 0°C to 70°C. The TLC27L2CD is classified as Last Time Buy, indicating discontinued production status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for applications currently utilizing this component.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| 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 (x2 Channels) | 20 | µA |
| Current - Output / Channel | 30 | mA |
| Voltage - Supply Span (Min) | 3 | V |
| Voltage - Supply Span (Max) | 16 | V |
| Operating Temperature | 0 to 70 | °C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the TLC27L2CD is determined by strict alignment of electrical and mechanical parameters within the CMOS dual-channel amplifier category. The critical parameters governing substitution eligibility are:
Primary Substitution Criteria:
- Amplifier Type: CMOS
- Number of Circuits: 2
- Package / Case: 8-SOIC (0.154", 3.90mm Width)
- Mounting Type: Surface Mount
- Voltage - Supply Span: 3V minimum to 16V maximum
- Operating Temperature Range: Must encompass or match 0°C to 70°C
Secondary Compatibility Parameters:
- Slew Rate: 0.03V/µs to 5.5V/µs (higher slew rates are compatible for low-speed applications)
- Gain Bandwidth Product: 110 kHz to 3.5 MHz (higher bandwidth provides enhanced performance margin)
- Current - Input Bias: 0.6 pA to 1 pA (ultra-low bias current maintained across substitutes)
- Current - Supply: 10µA to 20µA per channel (low-power operation preserved)
- Current - Output / Channel: 30 mA to 45 mA (output drive capability)
Substitute parts are grouped into two categories: Direct Manufacturer Substitutes (Texas Instruments TLC27L2CDR) and Cross-Manufacturer Alternatives (STMicroelectronics TS272 and TS27L2 series). All substitutes maintain ROHS3 compliance, MSL Level 1, and REACH unaffected status.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Slew Rate (V/µs) | GBW (kHz) | Input Bias (pA) | Input Offset (mV) | Supply Current (µA x2) | Output Current (mA) | Temp Range (°C) | Package |
|---|---|---|---|---|---|---|---|---|---|---|
| TLC27L2CD | Texas Instruments | Last Time Buy | 0.03 | 110 | 0.6 | 1.1 | 20 | 30 | 0 to 70 | 8-SOIC |
| TLC27L2CDR | Texas Instruments | Active | 0.03 | 110 | 0.6 | 1.1 | 20 | 30 | 0 to 70 | 8-SOIC |
| TS272ACDT | STMicroelectronics | Active | 5.5 | 3500 | 1 | 0.9 | 1 | 45 | 0 to 70 | 8-SOIC |
| TS272AIDT | STMicroelectronics | Active | 5.5 | 3500 | 1 | 0.9 | 1 | 45 | -40 to 125 | 8-SOIC |
| TS272BIDT | STMicroelectronics | Active | 5.5 | 3500 | 1 | 0.25 | 1 | 45 | -40 to 125 | 8-SOIC |
| TS272CDT | STMicroelectronics | Active | 5.5 | 3500 | 1 | 1.1 | 1 | 45 | 0 to 70 | 8-SOIC |
| TS272IDT | STMicroelectronics | Active | 5.5 | 3500 | 1 | 1.1 | 1 | 45 | -40 to 125 | 8-SOIC |
| TS27L2ACDT | STMicroelectronics | Active | 0.04 | 100 | 1 | 0.9 | 10 | 45 | 0 to 70 | 8-SOIC |
| TS27L2AIDT | STMicroelectronics | Active | 0.04 | 100 | 1 | 1.1 | 10 | 45 | -40 to 125 | 8-SOIC |
| TS27L2BIDT | STMicroelectronics | Active | 0.04 | 100 | 1 | 0.25 | 10 | 45 | -40 to 125 | 8-SOIC |
| LM432MA/NOPB | Texas Instruments | Obsolete | — | 1000 | 3 | 0.6 | 150 | 30 | -40 to 85 | 8-SOIC |
Engineering Selection Recommendations
Tier 1 - Direct Replacement (Recommended):
TLC27L2CDR is the primary substitute for TLC27L2CD. Both parts are manufactured by Texas Instruments, share identical electrical specifications, and maintain the same 8-SOIC package configuration. The only difference is product status: TLC27L2CDR is Active, ensuring continued availability and supply chain support. This part is suitable for direct substitution without design modification.
Tier 2 - Cross-Manufacturer Substitutes (TS27L2 Series):
The STMicroelectronics TS27L2 series (TS27L2ACDT, TS27L2AIDT, TS27L2BIDT) provides functional equivalence with enhanced performance characteristics. These parts maintain the low-power CMOS architecture with slew rates of 0.04V/µs and gain bandwidth products of 100 kHz, closely matching the TLC27L2CD specifications. Supply current is reduced to 10µA per channel (versus 20µA), providing power efficiency benefits. All TS27L2 variants are Active products with ROHS3 compliance and MSL Level 1 rating. Temperature range options include 0°C to 70°C and -40°C to 125°C variants.
Tier 3 - Enhanced Performance Substitutes (TS272 Series):
The STMicroelectronics TS272 series (TS272ACDT, TS272AIDT, TS272BIDT, TS272CDT, TS272IDT) offers significantly higher performance with slew rates of 5.5V/µs and gain bandwidth products of 3.5 MHz. These parts are suitable for applications requiring faster signal processing and higher bandwidth. Supply current is reduced to 1µA per channel, and output current capability is increased to 45 mA. All TS272 variants are Active products with ROHS3 compliance. Temperature range options include 0°C to 70°C and -40°C to 125°C variants.
Not Recommended:
LM432MA/NOPB is classified as Obsolete and exhibits significantly different electrical characteristics (3 nA input bias current, 150µA supply current per channel, 1 MHz gain bandwidth product). This part does not meet the low-power, low-bias-current requirements of the TLC27L2CD and is not suitable for substitution.
Frequently Asked Questions (FAQ)
Q1: Can TLC27L2CDR be used as a direct replacement for TLC27L2CD?
A: Yes. TLC27L2CDR is the direct equivalent manufactured by Texas Instruments. All electrical parameters, package configuration, and compliance certifications are identical. The only difference is product status: TLC27L2CDR is Active, ensuring continued supply availability.
Q2: What are the key differences between TLC27L2CD and the TS27L2 series?
A: The TS27L2 series maintains similar low-power CMOS architecture with comparable slew rates (0.04V/µs versus 0.03V/µs) and gain bandwidth products (100 kHz versus 110 kHz). The primary advantage is reduced supply current (10µA per channel versus 20µA), providing improved power efficiency. All TS27L2 variants are Active products with multiple temperature range options.
Q3: When should the TS272 series be considered instead of TS27L2?
A: The TS272 series is appropriate for applications requiring higher bandwidth (3.5 MHz versus 100 kHz) and faster slew rates (5.5V/µs versus 0.04V/µs). These enhanced performance characteristics support faster signal processing and higher frequency operation. Supply current is further reduced to 1µA per channel, and output current capability increases to 45 mA.
Q4: Are all substitute parts ROHS3 compliant?
A: Yes. All substitute parts listed (TLC27L2CDR, TS27L2 series, TS272 series) are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating and REACH unaffected status.
Q5: What packaging options are available for substitute parts?
A: All substitute parts are available in 8-SOIC surface mount packages (0.154", 3.90mm width). Packaging formats vary by part number: Tube, Cut Tape (CT) & Digi-Reel®, or Tape & Reel (TR). Verify packaging format compatibility with your procurement and assembly requirements.
Q6: Can I use a substitute part with a different operating temperature range?
A: Yes, if your application operates within the substitute part's temperature range. For example, TS27L2AIDT and TS27L2BIDT support -40°C to 125°C operation, providing extended temperature coverage compared to the TLC27L2CD (0°C to 70°C). Verify that your specific application requirements fall within the substitute part's rated temperature range.
Q7: What is the significance of input offset voltage differences among substitutes?
A: Input offset voltage affects DC accuracy in precision applications. The TLC27L2CD specifies 1.1 mV. Substitutes range from 0.25 mV (TS272BIDT, TS27L2BIDT) to 1.1 mV (TS272CDT, TS272IDT, TS27L2AIDT). Lower offset voltage provides improved DC accuracy; higher values are acceptable for AC-coupled or non-precision applications.
Q8: Why is LM432MA/NOPB not recommended as a substitute?
A: LM432MA/NOPB is classified as Obsolete and exhibits fundamentally different electrical characteristics: 3 nA input bias current (versus 0.6 pA), 150µA supply current per channel (versus 20µA), and 1 MHz gain bandwidth product (versus 110 kHz). These differences make it unsuitable for direct substitution and incompatible with the low-power, low-bias-current design requirements of the TLC27L2CD.
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