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TLC272CDG4 Equivalent & Substitute Parts
Part Overview
The TLC272CDG4 is a CMOS dual-channel operational amplifier manufactured by Texas Instruments in the LinCMOS™ series. This device integrates two independent amplifier circuits in an 8-SOIC surface mount package, designed for low-power analog signal processing applications requiring rail-to-rail operation across a 3V to 16V supply range.
The TLC272CDG4 is classified as an obsolete product. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications currently utilizing this component.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | CMOS | — |
| Number of Circuits | 2 | — |
| Slew Rate | 5.3 | V/µs |
| Gain Bandwidth Product | 2.2 | MHz |
| Current - Input Bias | 0.7 | pA |
| Voltage - Input Offset | 1.1 | mV |
| Current - Supply (per 2 Channels) | 1.9 | mA |
| 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 TLC272CDG4 is determined by strict alignment of the following electrical and mechanical parameters:
Primary Substitution Criteria:
- Amplifier Type: CMOS
- Number of Circuits: 2
- Package / Case: 8-SOIC (0.154", 3.90mm Width)
- Mounting Type: Surface Mount
- Supply Voltage Range: 3V to 16V minimum and maximum
- Output Current per Channel: 30 mA or greater
- RoHS3 Compliance
Secondary Compatibility Parameters:
- Slew Rate: 5.3 V/µs or greater
- Gain Bandwidth Product: 2.2 MHz or greater
- Input Bias Current: 0.7 pA or lower
- Input Offset Voltage: 1.1 mV or lower
- Supply Current: 1.9 mA (per 2 channels) or lower
Substitute parts are grouped into two categories:
Category A - Direct Functional Equivalents (Active Status): Parts that maintain identical or superior electrical performance with active product status. These include TLC272CDR (Texas Instruments, Cut Tape packaging) and TS272-series devices (STMicroelectronics, multiple temperature grades and packaging options).
Category B - Functional Alternatives (Obsolete Status): Parts that meet substitution criteria but retain obsolete status. These include LM432MA/NOPB, which operates within the required supply range and package specification but with different performance characteristics.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Slew Rate (V/µs) | GBW (MHz) | Input Bias (pA) | Input Offset (mV) | Supply Current (mA) | Output Current (mA) | Temp Range (°C) | Package |
|---|---|---|---|---|---|---|---|---|---|---|
| TLC272CDG4 | Texas Instruments | Obsolete | 5.3 | 2.2 | 0.7 | 1.1 | 1.9 | 30 | 0 to 70 | 8-SOIC |
| TLC272CDR | Texas Instruments | Active | 5.3 | 2.2 | 0.7 | 1.1 | 1.9 | 30 | 0 to 70 | 8-SOIC |
| TS272ACDT | STMicroelectronics | Active | 5.5 | 3.5 | 1 | 0.9 | 1 | 45 | 0 to 70 | 8-SOIC |
| TS272AIDT | STMicroelectronics | Active | 5.5 | 3.5 | 1 | 0.9 | 1 | 45 | -40 to 125 | 8-SOIC |
| TS272BIDT | STMicroelectronics | Active | 5.5 | 3.5 | 1 | 0.25 | 1 | 45 | -40 to 125 | 8-SOIC |
| TS272CDT | STMicroelectronics | Active | 5.5 | 3.5 | 1 | 1.1 | 1 | 45 | 0 to 70 | 8-SOIC |
| TS272IDT | STMicroelectronics | Active | 5.5 | 3.5 | 1 | 1.1 | 1 | 45 | -40 to 125 | 8-SOIC |
| TS27L2ACDT | STMicroelectronics | Active | 0.04 | 0.1 | 1 | 0.9 | 0.01 | 45 | 0 to 70 | 8-SOIC |
| TS27L2AIDT | STMicroelectronics | Active | 0.04 | 0.1 | 1 | 1.1 | 0.01 | 45 | -40 to 125 | 8-SOIC |
| TS27L2BIDT | STMicroelectronics | Active | 0.04 | 0.1 | 1 | 0.25 | 0.01 | 45 | -40 to 125 | 8-SOIC |
| LM432MA/NOPB | Texas Instruments | Obsolete | — | 1 | 3 | 0.6 | 0.15 | 30 | -40 to 85 | 8-SOIC |
Engineering Selection Recommendations
Primary Recommendation - Direct Replacement:
TLC272CDR is the preferred direct substitute for TLC272CDG4. Both devices are manufactured by Texas Instruments, share identical electrical specifications, and operate within the same temperature range (0°C to 70°C). The primary difference is packaging format: TLC272CDR is supplied in Cut Tape and Digi-Reel format, whereas TLC272CDG4 was supplied in Tube format. Both maintain ROHS3 compliance and MSL Level 1 rating. TLC272CDR is currently in active production status with substantial inventory availability (105,100 units).
Secondary Recommendations - Enhanced Performance Alternatives:
TS272CDT and TS272IDT (STMicroelectronics) provide superior electrical performance with higher slew rate (5.5 V/µs vs. 5.3 V/µs), greater gain bandwidth product (3.5 MHz vs. 2.2 MHz), and increased output current capability (45 mA vs. 30 mA per channel). Both devices maintain the 8-SOIC package, 3V to 16V supply range, and ROHS3 compliance. TS272IDT extends the operating temperature range to -40°C to 125°C, providing broader environmental coverage. These devices are suitable for applications requiring enhanced dynamic performance within the same form factor.
Extended Temperature Range Option:
TS272AIDT and TS272BIDT extend operating temperature to -40°C to 125°C while maintaining CMOS architecture and 8-SOIC packaging. TS272BIDT offers the lowest input offset voltage (0.25 mV) among active substitutes. These variants are appropriate for industrial and automotive applications requiring wider temperature operation.
Low-Power Alternatives:
TS27L2-series devices (TS27L2ACDT, TS27L2AIDT, TS27L2BIDT) reduce supply current to 10 µA per 2 channels, compared to 1.9 mA for TLC272CDG4. These devices are suitable for battery-powered or ultra-low-power applications. However, they exhibit significantly reduced slew rate (0.04 V/µs) and gain bandwidth product (100 kHz), limiting their use to low-frequency signal processing.
Functional Alternative:
LM432MA/NOPB operates as a general-purpose amplifier within the required supply voltage range and package specification. However, this device exhibits higher input bias current (3 nA vs. 0.7 pA) and lower gain bandwidth product (1 MHz vs. 2.2 MHz). Selection of LM432MA/NOPB is appropriate only when the reduced performance characteristics align with application requirements and when TLC272 or TS272 alternatives are unavailable.
Frequently Asked Questions (FAQ)
Q1: Can TLC272CDR directly replace TLC272CDG4 in existing designs?
Yes. TLC272CDR is electrically and functionally identical to TLC272CDG4. Both devices share the same CMOS architecture, dual-channel configuration, electrical specifications, and 8-SOIC package. The only difference is packaging format (Cut Tape/Digi-Reel vs. Tube). No circuit modifications are required. Both devices maintain ROHS3 compliance and MSL Level 1 rating.
Q2: What are the key differences between TLC272CDR and TS272CDT?
TLC272CDR and TS272CDT both operate within the 3V to 16V supply range and use the 8-SOIC package. TS272CDT provides enhanced performance: slew rate of 5.5 V/µs (vs. 5.3 V/µs), gain bandwidth product of 3.5 MHz (vs. 2.2 MHz), and output current of 45 mA per channel (vs. 30 mA). TS272CDT also reduces supply current to 1 mA per 2 channels. These improvements make TS272CDT suitable for higher-speed applications. Both maintain 0°C to 70°C operating temperature and ROHS3 compliance.
Q3: Which substitute part is suitable for extended temperature operation?
TS272AIDT, TS272BIDT, TS27L2AIDT, and TS27L2BIDT all operate across -40°C to 125°C. Among these, TS272AIDT and TS272BIDT maintain performance characteristics closest to the original TLC272CDG4, with slew rate of 5.5 V/µs and gain bandwidth product of 3.5 MHz. TS272BIDT offers the lowest input offset voltage (0.25 mV). Selection depends on whether enhanced performance or ultra-low power consumption is prioritized.
Q4: Are all substitute parts RoHS3 compliant?
Yes. All substitute parts listed—TLC272CDR, TS272-series, TS27L2-series, and LM432MA/NOPB—are ROHS3 compliant. All maintain MSL Level 1 (Unlimited) moisture sensitivity rating.
Q5: What is the difference between TS272CDT and TS272IDT?
Both devices are manufactured by STMicroelectronics with identical electrical specifications: 5.5 V/µs slew rate, 3.5 MHz gain bandwidth product, 1 mA supply current, and 45 mA output current per channel. The primary difference is operating temperature range: TS272CDT operates 0°C to 70°C, while TS272IDT operates -40°C to 125°C. Selection depends on application temperature requirements.
Q6: When should TS27L2-series devices be selected?
TS27L2-series devices (TS27L2ACDT, TS27L2AIDT, TS27L2BIDT) are appropriate for ultra-low-power applications where supply current reduction is critical. These devices consume only 10 µA per 2 channels, compared to 1.9 mA for TLC272CDG4. However, they exhibit significantly reduced slew rate (0.04 V/µs) and gain bandwidth product (100 kHz), limiting operation to low-frequency signal processing. Selection requires confirmation that application bandwidth requirements do not exceed 100 kHz.
Q7: Is LM432MA/NOPB a suitable substitute?
LM432MA/NOPB operates within the required 3V to 16V supply range and uses the 8-SOIC package. However, it exhibits higher input bias current (3 nA vs. 0.7 pA) and lower gain bandwidth product (1 MHz vs. 2.2 MHz) compared to TLC272CDG4. LM432MA/NOPB is classified as obsolete. This device is suitable only when application specifications tolerate reduced performance characteristics and when preferred alternatives are unavailable.
Q8: What packaging formats are available for substitute parts?
Substitute parts are available in multiple packaging formats: Cut Tape (CT) & Digi-Reel, Tape & Reel (TR), and Tube. TLC272CDR is available in Cut Tape & Digi-Reel format. TS272-series devices are available in Cut Tape & Digi-Reel (TS272ACDT, TS272CDT, TS27L2AIDT) and Tape & Reel (TS272AIDT, TS272BIDT, TS272IDT, TS27L2ACDT, TS27L2BIDT) formats. Selection depends on assembly process requirements and volume specifications.
Q9: Do all substitute parts use the same 8-SOIC package?
All substitute parts use the 8-SOIC package with 0.154" width and 3.90mm body width, matching the TLC272CDG4 package specification. This ensures mechanical and electrical compatibility with existing PCB layouts and socket designs.
Q10: What is the inventory status of substitute parts?
TLC272CDR has the highest inventory availability (105,100 units). TS272-series devices range from 1,457 to 25,400 units. TS27L2-series devices range from 3,120 to 10,400 units. LM432MA/NOPB has limited inventory (869 units) and obsolete status. For production continuity, TLC272CDR or TS272-series devices are recommended due to superior availability and active product status.
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