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TLC272BIDRG4 Equivalent & Substitute Parts
Part Overview
The TLC272BIDRG4 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 and operates across a 4V to 16V supply voltage range with an operating temperature span of -40°C to 85°C. The TLC272BIDRG4 is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility for existing designs.
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 | 290 | µV |
| Current - Supply (x2 Channels) | 1.4 | mA |
| Current - Output / Channel | 30 | mA |
| Voltage - Supply Span (Min) | 4 | V |
| Voltage - Supply Span (Max) | 16 | V |
| Operating Temperature | -40 to 85 | °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 TLC272BIDRG4 is determined by strict equivalence across the following critical parameters:
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: Minimum 4V, Maximum 16V
- Operating Temperature Range: Must encompass or match -40°C to 85°C
Secondary Compatibility Parameters:
- Slew Rate: 5.3 V/µs (TLC272BIDRG4 baseline)
- Gain Bandwidth Product: 2.2 MHz (TLC272BIDRG4 baseline)
- Current - Input Bias: 0.7 pA (TLC272BIDRG4 baseline)
- Voltage - Input Offset: 290 µV (TLC272BIDRG4 baseline)
- Current - Supply: 1.4 mA x2 Channels (TLC272BIDRG4 baseline)
- Current - Output / Channel: 30 mA (TLC272BIDRG4 baseline)
Substitute parts are classified into two categories:
Category A - Direct Electrical Equivalents (Recommended Primary Substitutes): Parts that maintain identical or superior electrical performance specifications while preserving the 8-SOIC package format and CMOS amplifier topology. These parts are active in production and support the full operating temperature range of -40°C to 85°C or broader.
Category B - Functional Alternatives (Extended Substitutes): Parts that maintain CMOS dual-channel topology and 8-SOIC packaging but exhibit different electrical characteristics (slew rate, gain bandwidth product, input bias current, or supply current). These parts are suitable only when application requirements permit deviation from the original TLC272BIDRG4 specifications.
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Slew Rate (V/µs) | GBW (MHz) | Input Bias (pA) | Input Offset (µV) | Supply Current (mA) | Output Current (mA) | Temp Range (°C) | Product Status |
|---|---|---|---|---|---|---|---|---|---|---|
| TLC272BIDRG4 | Texas Instruments | CMOS | 5.3 | 2.2 | 0.7 | 290 | 1.4 | 30 | -40 to 85 | Discontinued |
| TLC272BIDR | Texas Instruments | CMOS | 5.3 | 2.2 | 0.7 | 290 | 1.4 | 30 | -40 to 85 | Active |
| TS272BIDT | STMicroelectronics | CMOS | 5.5 | 3.5 | 1 | 250 | 1 | 45 | -40 to 125 | Active |
| TS272ACDT | STMicroelectronics | CMOS | 5.5 | 3.5 | 1 | 900 | 1 | 45 | 0 to 70 | Active |
| TS272AIDT | STMicroelectronics | CMOS | 5.5 | 3.5 | 1 | 900 | 1 | 45 | -40 to 125 | Active |
| TS272CDT | STMicroelectronics | CMOS | 5.5 | 3.5 | 1 | 1100 | 1 | 45 | 0 to 70 | Active |
| TS272IDT | STMicroelectronics | CMOS | 5.5 | 3.5 | 1 | 1100 | 1 | 45 | -40 to 125 | Active |
| TS27L2ACDT | STMicroelectronics | CMOS | 0.04 | 0.1 | 1 | 900 | 0.01 | 45 | 0 to 70 | Active |
| TS27L2AIDT | STMicroelectronics | CMOS | 0.04 | 0.1 | 1 | 1100 | 0.01 | 45 | -40 to 125 | Active |
| TS27L2BIDT | STMicroelectronics | CMOS | 0.04 | 0.1 | 1 | 250 | 0.01 | 45 | -40 to 125 | Active |
| LM432MA/NOPB | Texas Instruments | General Purpose | — | 1 | 3 | 600 | 0.15 | 30 | -40 to 85 | Obsolete |
Engineering Selection Recommendations
Tier 1 - Primary Recommendation:
The TLC272BIDR (Texas Instruments, Active status) is the direct functional equivalent of the discontinued TLC272BIDRG4. This part maintains identical electrical specifications across all critical parameters: 5.3 V/µs slew rate, 2.2 MHz gain bandwidth product, 0.7 pA input bias current, 290 µV input offset voltage, 1.4 mA supply current, and 30 mA output current per channel. The operating temperature range (-40°C to 85°C) and 8-SOIC package format are identical. The TLC272BIDR is currently in active production with 17,700 units in stock, ensuring long-term availability and supply chain stability. RoHS3 compliance and MSL Level 1 rating match the original specification.
Tier 2 - Secondary Recommendations (Performance Enhancement):
The STMicroelectronics TS272BIDT and TS272IDT series provide enhanced electrical performance within the same 8-SOIC package envelope. These parts feature 5.5 V/µs slew rate (versus 5.3 V/µs), 3.5 MHz gain bandwidth product (versus 2.2 MHz), and 45 mA output current per channel (versus 30 mA). The TS272BIDT operates across -40°C to 125°C, exceeding the original temperature range. Supply current is reduced to 1 mA per channel. These characteristics make the TS272 series suitable for applications requiring higher bandwidth or extended temperature operation. Both parts are active in production with substantial inventory (1,977 and 21,553 units respectively).
Tier 3 - Specialized Alternatives (Low-Power Applications):
The STMicroelectronics TS27L2BIDT is a low-power variant maintaining the 8-SOIC package and CMOS topology. This part reduces supply current to 10 µA per channel (versus 1.4 mA) and operates across -40°C to 125°C. However, slew rate is reduced to 0.04 V/µs and gain bandwidth product to 100 kHz. This part is suitable only for applications where power consumption is the primary design constraint and bandwidth requirements are minimal. Active production status with 10,353 units in stock.
Not Recommended:
The LM432MA/NOPB (Texas Instruments, Obsolete status) is not recommended as a substitute. Although it maintains the 8-SOIC package and -40°C to 85°C temperature range, it is classified as a General Purpose amplifier rather than CMOS, exhibits significantly different electrical characteristics (1 MHz GBW versus 2.2 MHz, 3 nA input bias versus 0.7 pA, 600 µV input offset versus 290 µV), and carries obsolete product status with limited inventory (869 units). This part does not provide equivalent performance and introduces supply chain risk.
Frequently Asked Questions (FAQ)
Q1: Can I directly replace TLC272BIDRG4 with TLC272BIDR without circuit modification?
A: Yes. The TLC272BIDR is electrically and mechanically identical to the TLC272BIDRG4. Both parts share identical slew rate (5.3 V/µs), gain bandwidth product (2.2 MHz), input bias current (0.7 pA), input offset voltage (290 µV), supply current (1.4 mA per channel), output current (30 mA per channel), and operating temperature range (-40°C to 85°C). The 8-SOIC package footprint is identical. No circuit modifications are required. The primary difference is packaging format: TLC272BIDR is supplied in Cut Tape and Digi-Reel formats, while TLC272BIDRG4 was supplied in Digi-Reel format.
Q2: What are the key differences between TLC272BIDR and TS272BIDT?
A: Both parts are CMOS dual-channel amplifiers in 8-SOIC packages, but they differ in electrical performance and temperature range. The TS272BIDT offers higher slew rate (5.5 V/µs versus 5.3 V/µs), higher gain bandwidth product (3.5 MHz versus 2.2 MHz), lower supply current (1 mA versus 1.4 mA per channel), and higher output current (45 mA versus 30 mA per channel). The TS272BIDT also extends the operating temperature range to -40°C to 125°C. These enhancements make TS272BIDT suitable for higher-bandwidth applications or extended temperature environments. Circuit modifications may be required if the original design relies on the specific slew rate or bandwidth characteristics of the TLC272BIDR.
Q3: Are STMicroelectronics TS272 parts pin-compatible with Texas Instruments TLC272 parts?
A: Yes. Both the TS272 series (STMicroelectronics) and TLC272 series (Texas Instruments) use the 8-SOIC package with identical pin assignments. Pin-to-pin compatibility is maintained across all TS272 variants (TS272ACDT, TS272AIDT, TS272BIDT, TS272CDT, TS272IDT) and TLC272 variants. Physical board layout and PCB footprints require no modification. However, electrical performance differences (slew rate, bandwidth, input offset voltage) may affect circuit behavior depending on application requirements.
Q4: Can I use TS27L2BIDT as a substitute if my application has strict power consumption limits?
A: The TS27L2BIDT is suitable only if your application can tolerate significantly reduced bandwidth and slew rate. This part reduces supply current to 10 µA per channel (versus 1.4 mA in TLC272BIDRG4), representing a 99.3% reduction in power consumption. However, slew rate drops to 0.04 V/µs (versus 5.3 V/µs) and gain bandwidth product reduces to 100 kHz (versus 2.2 MHz). These specifications are appropriate only for low-frequency signal conditioning, precision measurement, or sensor interface applications where bandwidth is not a design constraint. High-frequency or fast-transient applications will not function correctly with this part.
Q5: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging?
A: Cut Tape and Tape & Reel are distribution formats for surface mount components, not functional differences. Tape & Reel (TR) packaging supplies components on continuous carrier tape wound on reels, suitable for high-volume automated assembly. Cut Tape (CT) supplies components on cut segments of carrier tape, suitable for lower-volume or manual assembly. Both formats contain identical components with identical electrical specifications. Selection between CT and TR depends on assembly process requirements and order volume, not on component performance or compatibility.
Q6: Is the LM432MA/NOPB a viable alternative to TLC272BIDRG4?
A: No. Although the LM432MA/NOPB maintains the 8-SOIC package and -40°C to 85°C temperature range, it is not a viable substitute. The LM432MA/NOPB is classified as a General Purpose amplifier (not CMOS), exhibits inferior electrical characteristics (1 MHz GBW versus 2.2 MHz, 3 nA input bias versus 0.7 pA, 600 µV input offset versus 290 µV), and carries obsolete product status. The part is no longer in active production, creating long-term supply chain risk. Additionally, the different amplifier topology and electrical characteristics will cause circuit performance degradation or malfunction.
Q7: Do all substitute parts meet RoHS3 and REACH compliance requirements?
A: Yes. All recommended substitute parts (TLC272BIDR, TS272BIDT, TS272AIDT, TS272ACDT, TS272CDT, TS272IDT, TS27L2BIDT, TS27L2AIDT, TS27L2ACDT) are RoHS3 compliant and REACH unaffected, matching the compliance status of the original TLC272BIDRG4. All parts carry Moisture Sensitivity Level (MSL) 1 rating (Unlimited), indicating no moisture sensitivity precautions are required during storage or handling.
Q8: Which substitute part offers the best balance of performance and availability?
A: The TLC272BIDR offers the optimal balance. It provides identical electrical performance to the discontinued TLC272BIDRG4, maintains full compatibility with existing circuit designs, and is currently in active production with the highest inventory availability (17,700 units). This part requires no circuit modifications and presents zero technical risk. For applications requiring enhanced performance (higher bandwidth, extended temperature range, or higher output current), the TS272BIDT or TS272IDT are recommended alternatives, both with substantial inventory (1,977 and 21,553 units respectively) and active production status.
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