TLC27M2ACD CMOS Amplifier Equivalent & Substitute Parts

Part Overview

The TLC27M2ACD is a dual-channel CMOS 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 a typical operating temperature range of 0°C to 70°C. The part is currently in Last Time Buy status, indicating that Texas Instruments has discontinued active production. 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.

Key Parameters

Parameter	Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	2	—
Slew Rate	0.62	V/µs
Gain Bandwidth Product	635	kHz
Current - Input Bias	0.7	pA
Voltage - Input Offset	900	µV
Current - Supply (x2 Channels)	285	µA
Current - Output / Channel	30	mA
Voltage - Supply Span (Min)	4	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 TLC27M2ACD is determined by strict alignment of the following critical parameters: amplifier type (CMOS), number of circuits (2), package type (8-SOIC surface mount), supply voltage range compatibility (minimum 4V, maximum 16V), and operating temperature range (0°C to 70°C or extended). The slew rate (0.62V/µs), gain bandwidth product (635 kHz), input bias current (0.7 pA), and input offset voltage (900 µV) define the performance envelope. Output current capability (30 mA per channel) and supply current consumption (285 µA for both channels) establish functional equivalence thresholds.

Substitute parts are grouped into two categories:

Category 1: Direct Packaging Equivalents — Parts with identical 8-SOIC package, CMOS amplifier type, dual-circuit configuration, and overlapping supply voltage ranges. These parts maintain the same physical footprint and electrical interface.

Category 2: Performance-Enhanced Alternatives — Parts with superior slew rate, higher gain bandwidth product, or extended operating temperature ranges, suitable for applications requiring enhanced performance while maintaining package compatibility and dual-circuit architecture.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Circuits	Slew Rate (V/µs)	GBW (kHz)	Input Bias (pA)	Input Offset (µV)	Supply Current (µA)	Output Current (mA)	Voltage Min (V)	Voltage Max (V)	Temp Range (°C)	Package	Status
TLC27M2ACD	Texas Instruments	CMOS	2	0.62	635	0.7	900	285	30	4	16	0 to 70	8-SOIC	Last Time Buy
TLC27M2ACDR	Texas Instruments	CMOS	2	0.62	635	0.7	900	285	30	4	16	0 to 70	8-SOIC	Active
TS272ACDT	STMicroelectronics	CMOS	2	5.5	3500	1	900	1000	45	3	16	0 to 70	8-SOIC	Active
TS272AIDT	STMicroelectronics	CMOS	2	5.5	3500	1	900	1000	45	3	16	-40 to 125	8-SOIC	Active
TS272BIDT	STMicroelectronics	CMOS	2	5.5	3500	1	250	1000	45	3	16	-40 to 125	8-SOIC	Active
TS272CDT	STMicroelectronics	CMOS	2	5.5	3500	1	1100	1000	45	3	16	0 to 70	8-SOIC	Active
TS272IDT	STMicroelectronics	CMOS	2	5.5	3500	1	1100	1000	45	3	16	-40 to 125	8-SOIC	Active
TS27L2ACDT	STMicroelectronics	CMOS	2	0.04	100	1	900	10	45	3	16	0 to 70	8-SOIC	Active
TS27L2AIDT	STMicroelectronics	CMOS	2	0.04	100	1	1100	10	45	3	16	-40 to 125	8-SOIC	Active
LM432MA/NOPB	Texas Instruments	General Purpose	2	—	1000	3	600	150	30	2.5	16	-40 to 85	8-SOIC	Obsolete
LM2904DR	Rohm Semiconductor	General Purpose	2	0.3	700	20	3000	1000	40	3	26	-40 to 125	8-SOIC	Not For New Designs

Engineering Selection Recommendations

Primary Recommendation: TLC27M2ACDR

The TLC27M2ACDR is the direct equivalent of the TLC27M2ACD, manufactured by Texas Instruments with identical electrical specifications and 8-SOIC package configuration. The only difference is packaging format: TLC27M2ACDR is supplied in Tape & Reel (TR) format versus Tube format for the original part. This substitute maintains full compatibility with existing PCB designs and assembly processes. Product status is Active, ensuring long-term availability and supply chain stability. RoHS3 compliance and MSL 1 rating are maintained. This part is recommended for immediate adoption in new production runs and design revisions.

Secondary Recommendation: TS272 Series (STMicroelectronics)

The TS272 series from STMicroelectronics offers performance-enhanced alternatives with significantly higher slew rate (5.5V/µs versus 0.62V/µs) and gain bandwidth product (3.5 MHz versus 635 kHz). All TS272 variants maintain dual-circuit CMOS architecture in 8-SOIC package with supply voltage range of 3V to 16V, which encompasses the TLC27M2ACD operating window. Multiple temperature and offset voltage grades are available:

TS272ACDT and TS272CDT: 0°C to 70°C operating range
TS272AIDT and TS272IDT: Extended -40°C to 125°C operating range
TS272BIDT: -40°C to 125°C with improved input offset voltage (250 µV)

These parts are suitable for applications requiring enhanced bandwidth performance while maintaining package footprint compatibility. All variants are Active status with robust supply availability.

Tertiary Recommendation: TS27L2 Series (STMicroelectronics)

The TS27L2 series provides ultra-low power consumption (10 µA supply current versus 285 µA) with reduced slew rate (0.04V/µs) and lower gain bandwidth product (100 kHz). This series is appropriate for battery-powered or energy-constrained applications where the TLC27M2ACD's performance specifications exceed system requirements. TS27L2ACDT supports 0°C to 70°C operation, while TS27L2AIDT extends to -40°C to 125°C. Both maintain 8-SOIC package compatibility and Active product status.

Not Recommended: LM432MA/NOPB and LM2904DR

The LM432MA/NOPB (Obsolete status) and LM2904DR (Not For New Designs status) are not recommended for new designs. While both maintain 8-SOIC package format and dual-circuit configuration, their product lifecycle status indicates discontinued or restricted use. LM432MA/NOPB uses General Purpose amplifier architecture rather than CMOS, and LM2904DR exhibits significantly higher input offset voltage (3 mV) and input bias current (20 nA), making it unsuitable for precision applications. These parts should be avoided in new product development.

Frequently Asked Questions (FAQ)

Q1: Can TLC27M2ACDR be used as a direct drop-in replacement for TLC27M2ACD?

A: Yes. TLC27M2ACDR is electrically and functionally identical to TLC27M2ACD. Both parts share the same 8-SOIC package footprint, pinout, and electrical specifications. The only difference is packaging format (Tape & Reel versus Tube). No PCB redesign or firmware changes are required. TLC27M2ACDR is the recommended substitute for continued production.

Q2: What are the key differences between TLC27M2ACD and TS272 series substitutes?

A: The TS272 series offers significantly enhanced performance: slew rate increases from 0.62V/µs to 5.5V/µs, and gain bandwidth product increases from 635 kHz to 3.5 MHz. Supply current consumption increases from 285 µA to 1 mA. Output current capability improves from 30 mA to 45 mA per channel. Minimum supply voltage decreases from 4V to 3V, expanding the operating envelope. All TS272 variants maintain 8-SOIC package compatibility and dual-circuit CMOS architecture. Selection depends on whether the application requires enhanced bandwidth performance.

Q3: Are TS272 parts suitable for applications designed for TLC27M2ACD?

A: TS272 parts are suitable for most applications, provided the increased supply current consumption (1 mA versus 285 µA) and higher slew rate do not introduce noise or stability issues in the specific circuit topology. The enhanced bandwidth may require circuit re-evaluation in sensitive analog applications. Electrical compatibility is confirmed by overlapping supply voltage ranges (3V to 16V for TS272 encompasses 4V to 16V for TLC27M2ACD) and identical package footprint. Functional testing is recommended before production deployment.

Q4: What is the significance of operating temperature range differences?

A: The TLC27M2ACD operates from 0°C to 70°C. STMicroelectronics TS272 and TS27L2 series offer variants with extended -40°C to 125°C operating range. Selection of extended-temperature variants (TS272AIDT, TS272IDT, TS27L2AIDT) is necessary for applications requiring operation outside the 0°C to 70°C window, such as automotive, industrial, or outdoor environments. Standard-temperature variants (TS272ACDT, TS272CDT, TS27L2ACDT) are suitable for consumer and commercial applications within the 0°C to 70°C range.

Q5: Why is TS27L2 series recommended for some applications?

A: The TS27L2 series is recommended for battery-powered, energy-harvesting, or ultra-low-power applications where supply current consumption is a critical design constraint. TS27L2 consumes only 10 µA total supply current compared to 285 µA for TLC27M2ACD, representing a 28.5× reduction. This comes at the cost of reduced slew rate (0.04V/µs) and lower gain bandwidth product (100 kHz). TS27L2 is suitable only for low-frequency signal conditioning, precision measurement, and sensor interface applications where bandwidth requirements are minimal.

Q6: What packaging formats are available for substitute parts?

A: Substitute parts are available in multiple packaging formats: Tube (individual components), Cut Tape (CT) & Digi-Reel® (continuous tape for automated pick-and-place), and Tape & Reel (TR) (full reel for high-volume production). TLC27M2ACDR is supplied in Tape & Reel format. TS272 and TS27L2 series are available in both Cut Tape and Tape & Reel formats depending on part number suffix. Selection depends on production volume and assembly equipment compatibility. All formats maintain identical electrical specifications and 8-SOIC package dimensions.

Q7: Are all substitute parts RoHS3 compliant?

A: Yes. All recommended substitute parts (TLC27M2ACDR, TS272 series, TS27L2 series) are RoHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). Compliance certifications match the original TLC27M2ACD, ensuring compatibility with environmental and regulatory requirements for consumer, commercial, and industrial applications.

Q8: What is the significance of "Last Time Buy" status for TLC27M2ACD?

A: Last Time Buy status indicates that Texas Instruments has announced end-of-life for the TLC27M2ACD and will no longer accept new orders after a specified cutoff date. Existing inventory will be depleted, and the part will transition to obsolescence. Immediate action is required to identify and qualify substitute parts, establish alternative supply sources, and implement design changes if necessary. TLC27M2ACDR (Active status) is the recommended transition path to ensure uninterrupted product availability.

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