TLC27L2ID CMOS Amplifier Equivalent & Substitute Parts

Part Overview

The TLC27L2ID is a dual-channel CMOS operational amplifier manufactured by Texas Instruments in the LinCMOS™ series. This device is classified as a Last Time Buy product, indicating discontinued production with limited remaining inventory. The TLC27L2ID is packaged in 8-SOIC surface mount configuration and is designed for low-power, low-speed analog signal processing applications requiring minimal input bias current and low supply current consumption.

Due to Last Time Buy status, alternative equivalent parts are necessary for new designs and long-term production planning. Suitable substitutes must maintain electrical compatibility across critical parameters including supply voltage range, input bias current, output current capability, and thermal operating range, while accommodating packaging and performance variations.

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 (per Channel)	20	µA
Current - Output / Channel	30	mA
Voltage - Supply Span (Min)	4	V
Voltage - Supply Span (Max)	16	V
Operating Temperature Range	-40 to 85	°C
Mounting Type	Surface Mount	—
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TLC27L2ID is determined by the following critical parameters:

Electrical Compatibility Criteria:

Dual-channel CMOS amplifier architecture
Supply voltage range encompassing 4V to 16V minimum requirement
Input bias current in picoampere range (ultra-low leakage)
Output current capability of 30 mA or greater per channel
Operating temperature range supporting -40°C to 85°C minimum

Mechanical Compatibility Criteria:

8-pin SOIC surface mount package (0.154" width, 3.90mm)
Pin-compatible configuration

Substitute parts are grouped into two categories:

Category 1: Direct Electrical Equivalents (Identical Performance)

TLC27L2IDR: Identical electrical specifications, alternative packaging (Cut Tape & Digi-Reel)
TS27L2ACDT, TS27L2AIDT, TS27L2BIDT: STMicroelectronics equivalents with matching slew rate (0.04V/µs) and gain bandwidth product (100 kHz), compatible supply voltage and temperature ranges

Category 2: Enhanced Performance Alternatives

TS272 series (TS272ACDT, TS272AIDT, TS272BIDT, TS272CDT, TS272IDT): Higher slew rate (5.5V/µs) and gain bandwidth product (3.5 MHz), lower minimum supply voltage (3V), increased output current (45 mA), suitable for applications tolerating improved performance specifications

Category 3: Legacy General Purpose Alternative

LM432MA/NOPB: Obsolete general-purpose amplifier with different electrical characteristics (1 MHz bandwidth, higher supply current), included for reference only

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (kHz)	Input Bias (pA)	Input Offset (mV)	Supply Current (µA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Product Status
TLC27L2ID	Texas Instruments	CMOS	0.03	110	0.6	1.1	20	30	4	16	-40 to 85	Last Time Buy
TLC27L2IDR	Texas Instruments	CMOS	0.03	110	0.6	1.1	20	30	4	16	-40 to 85	Active
TS27L2ACDT	STMicroelectronics	CMOS	0.04	100	1	0.9	10	45	3	16	0 to 70	Active
TS27L2AIDT	STMicroelectronics	CMOS	0.04	100	1	1.1	10	45	3	16	-40 to 125	Active
TS27L2BIDT	STMicroelectronics	CMOS	0.04	100	1	0.25	10	45	3	16	-40 to 125	Active
TS272ACDT	STMicroelectronics	CMOS	5.5	3500	1	0.9	1	45	3	16	0 to 70	Active
TS272AIDT	STMicroelectronics	CMOS	5.5	3500	1	0.9	1	45	3	16	-40 to 125	Active
TS272BIDT	STMicroelectronics	CMOS	5.5	3500	1	0.25	1	45	3	16	-40 to 125	Active
TS272CDT	STMicroelectronics	CMOS	5.5	3500	1	1.1	1	45	3	16	0 to 70	Active
TS272IDT	STMicroelectronics	CMOS	5.5	3500	1	1.1	1	45	3	16	-40 to 125	Active
LM432MA/NOPB	Texas Instruments	General Purpose	—	1000	3	0.6	150	30	2.5	16	-40 to 85	Obsolete

Engineering Selection Recommendations

Primary Recommendation: TLC27L2IDR

The TLC27L2IDR is the direct functional equivalent of the TLC27L2ID, manufactured by Texas Instruments with identical electrical specifications. This part is in Active product status with 20,300 units in stock, providing long-term availability. The only difference is packaging format (Cut Tape & Digi-Reel versus Tube), which does not affect electrical performance or pin compatibility. This part is recommended for direct replacement in all applications currently using TLC27L2ID.

Secondary Recommendation: TS27L2 Series (STMicroelectronics)

The TS27L2AIDT and TS27L2BIDT variants provide extended operating temperature range (-40°C to 125°C) compared to the original TLC27L2ID (-40°C to 85°C). These parts maintain similar electrical characteristics with marginally lower supply current (10µA versus 20µA per channel) and higher output current capability (45mA versus 30mA). The TS27L2AIDT is suitable for applications requiring the extended temperature range with standard input offset voltage (1.1mV). The TS27L2BIDT offers improved input offset voltage (0.25mV) for precision applications. Both parts are in Active status with adequate inventory.

Alternative Consideration: TS272 Series (Enhanced Performance)

The TS272 series (TS272AIDT, TS272BIDT, TS272IDT) offers significantly enhanced performance with 5.5V/µs slew rate and 3.5MHz gain bandwidth product, compared to 0.03V/µs and 110kHz of the original part. These parts operate at lower minimum supply voltage (3V) and consume substantially less supply current (1µA per channel). Selection of TS272 variants is appropriate only for applications where the original TLC27L2ID performance specifications are not critical constraints and where improved bandwidth and slew rate provide system benefits.

Not Recommended: LM432MA/NOPB

The LM432MA/NOPB is classified as Obsolete and exhibits significantly different electrical characteristics (1MHz bandwidth, 150µA supply current, 3nA input bias current). This part is included for reference only and is not suitable for direct substitution.

Compliance Verification:

All recommended substitute parts maintain ROHS3 compliance, MSL Level 1 (Unlimited), and REACH Unaffected status consistent with the original TLC27L2ID. All parts are classified under ECCN EAR99 and HTSUS 8542.33.0001.

Frequently Asked Questions (FAQ)

Q1: Can TLC27L2IDR be used as a direct replacement for TLC27L2ID?

Yes. The TLC27L2IDR is electrically identical to the TLC27L2ID with all specifications matching exactly. The only difference is packaging format (Cut Tape & Digi-Reel versus Tube). Pin configuration, electrical performance, and thermal characteristics are identical. This is the recommended substitute for direct replacement.

Q2: What is the difference between TS27L2 and TS272 series parts?

The TS27L2 series maintains performance characteristics similar to the original TLC27L2ID (0.03-0.04V/µs slew rate, 100-110kHz bandwidth) with extended temperature range options. The TS272 series provides enhanced performance (5.5V/µs slew rate, 3.5MHz bandwidth) suitable for higher-speed applications. Selection depends on whether the original low-speed, low-power characteristics are required or whether improved performance is beneficial.

Q3: Which substitute part offers the widest operating temperature range?

The TS27L2AIDT, TS27L2BIDT, TS272AIDT, TS272BIDT, and TS272IDT all support -40°C to 125°C operating range, compared to -40°C to 85°C for the original TLC27L2ID. These parts are suitable for applications requiring extended high-temperature operation.

Q4: Are all substitute parts available in 8-SOIC package?

All recommended substitute parts are available in 8-SOIC surface mount package (0.154" width, 3.90mm). Package compatibility is maintained across all alternatives. Packaging format variations (Tube, Cut Tape & Digi-Reel, Tape & Reel) do not affect electrical performance or PCB assembly compatibility.

Q5: What is the input bias current difference between TLC27L2ID and TS27L2 alternatives?

The TLC27L2ID specifies 0.6pA input bias current. The TS27L2 series specifies 1pA input bias current. This 0.4pA difference is negligible for most applications and does not constitute a functional incompatibility. Applications with extremely stringent input bias current requirements should verify acceptability of the 1pA specification.

Q6: Can TS272 series parts be used in applications designed for TLC27L2ID?

TS272 series parts can be used only if the application circuit design accommodates the significantly higher slew rate (5.5V/µs versus 0.03V/µs) and bandwidth (3.5MHz versus 110kHz). Applications with feedback networks or compensation designed for the original low-bandwidth characteristics may exhibit instability or oscillation with TS272 parts. Circuit re-evaluation is required before substitution.

Q7: What is the supply current advantage of TS27L2 and TS272 series?

The TS27L2 series consumes 10µA per channel (50% reduction from 20µA). The TS272 series consumes 1µA per channel (95% reduction from 20µA). For battery-powered or ultra-low-power applications, the TS272 series provides significant power consumption advantage. For standard applications, this difference is typically not a primary selection criterion.

Q8: Are all substitute parts RoHS compliant?

Yes. All recommended substitute parts (TLC27L2IDR, TS27L2 series, TS272 series) are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating. Compliance status is identical to the original TLC27L2ID.

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