TLC27M2BCD CMOS Amplifier Equivalent & Substitute Parts

Part Overview

The TLC27M2BCD is a dual-channel CMOS operational amplifier manufactured by Texas Instruments in 8-SOIC surface mount packaging. This device is classified as a Last Time Buy product, indicating discontinued production with limited remaining inventory (1125 pcs). The TLC27M2BCD belongs to the LinCMOS™ series and is designed for applications requiring low input bias current and low power consumption across a 3V to 16V supply range.

Substitute parts are necessary due to the Last Time Buy status of the TLC27M2BCD. Alternative components with equivalent electrical and mechanical specifications ensure design continuity and long-term component availability for new production runs and field replacements.

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	224	µV
Current - Supply (x2 Channels)	285	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 eligibility for the TLC27M2BCD is determined by the following criteria:

Primary Compatibility Parameters:

Amplifier Type: CMOS
Number of Circuits: 2
Package / Case: 8-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Voltage - Supply Span: 3V to 16V minimum overlap
Operating Temperature: 0°C to 70°C minimum overlap

Secondary Electrical Parameters (allowable variance):

Slew Rate: 0.62 V/µs or higher
Gain Bandwidth Product: 635 kHz or higher
Current - Input Bias: 0.7 pA or lower
Voltage - Input Offset: 224 µV or lower
Current - Supply: 285 µA or lower per channel
Current - Output / Channel: 30 mA or higher

Substitute parts are grouped into two categories:

Category 1: Direct Packaging Equivalent (Tube/Tape & Reel) TLC27M2BCDR differs from TLC27M2BCD only in packaging format (Tape & Reel vs. Tube). All electrical specifications are identical. This part maintains Active product status with higher inventory availability (2600 pcs).

Category 2: Enhanced Performance Substitutes (STMicroelectronics TS272 Series) TS272ACDT, TS272AIDT, TS272BIDT, TS272CDT, and TS272IDT offer superior electrical performance while maintaining CMOS amplifier topology, dual-channel configuration, and 8-SOIC packaging. These parts exceed minimum electrical requirements across slew rate (5.5 V/µs), gain bandwidth product (3.5 MHz), and output current (45 mA). All variants are Active products with substantial inventory.

Category 3: Low-Power Substitutes (STMicroelectronics TS27L2 Series) TS27L2ACDT, TS27L2AIDT, and TS27L2BIDT provide ultra-low supply current (10 µA per channel) suitable for battery-powered applications. These parts maintain CMOS topology, dual-channel configuration, and 8-SOIC packaging while accepting reduced slew rate (0.04 V/µs) and gain bandwidth product (100 kHz). All variants are Active products.

Category 4: General Purpose Alternative (Texas Instruments LM432MA/NOPB) LM432MA/NOPB is a general-purpose amplifier with different electrical characteristics. This part is Obsolete and included for reference only; substitution requires design verification.

Parameter Comparison

Part Number	Manufacturer	Product Status	Slew Rate (V/µs)	GBW (kHz)	Input Bias (pA)	Input Offset (µV)	Supply Current (µA)	Output Current (mA)	Temp Range (°C)	Packaging	Inventory (pcs)
TLC27M2BCD	Texas Instruments	Last Time Buy	0.62	635	0.7	224	285	30	0 to 70	Tube	1125
TLC27M2BCDR	Texas Instruments	Active	0.62	635	0.7	224	285	30	0 to 70	Tape & Reel	2600
TS272ACDT	STMicroelectronics	Active	5.5	3500	1	900	1000	45	0 to 70	Cut Tape	25400
TS272AIDT	STMicroelectronics	Active	5.5	3500	1	900	1000	45	-40 to 125	Cut Tape	1457
TS272BIDT	STMicroelectronics	Active	5.5	3500	1	250	1000	45	-40 to 125	Tape & Reel	1977
TS272CDT	STMicroelectronics	Active	5.5	3500	1	1100	1000	45	0 to 70	Cut Tape	17007
TS272IDT	STMicroelectronics	Active	5.5	3500	1	1100	1000	45	-40 to 125	Tape & Reel	21553
TS27L2ACDT	STMicroelectronics	Active	0.04	100	1	900	10	45	0 to 70	Tape & Reel	10400
TS27L2AIDT	STMicroelectronics	Active	0.04	100	1	1100	10	45	-40 to 125	Cut Tape	3120
TS27L2BIDT	STMicroelectronics	Active	0.04	100	1	250	10	45	-40 to 125	Tape & Reel	10353
LM432MA/NOPB	Texas Instruments	Obsolete	—	1000	3	600	150	30	-40 to 85	Tube	869

Engineering Selection Recommendations

Recommended Primary Substitute: TLC27M2BCDR

TLC27M2BCDR is the optimal substitute for TLC27M2BCD. This part is manufactured by Texas Instruments with identical electrical specifications and maintains the same 8-SOIC package footprint. The only difference is packaging format (Tape & Reel vs. Tube), which does not affect circuit performance. TLC27M2BCDR holds Active product status with 2600 pcs inventory, ensuring long-term availability. Both parts are ROHS3 Compliant with MSL 1 rating and REACH Unaffected status.

Secondary Substitutes: STMicroelectronics TS272 Series (Enhanced Performance)

TS272ACDT, TS272AIDT, TS272BIDT, TS272CDT, and TS272IDT are suitable substitutes for applications where enhanced performance is acceptable. These parts exceed TLC27M2BCD specifications in slew rate (5.5 V/µs vs. 0.62 V/µs), gain bandwidth product (3.5 MHz vs. 635 kHz), and output current (45 mA vs. 30 mA). All TS272 variants are Active products with substantial inventory. Selection among TS272 variants depends on operating temperature range and packaging format requirements:

TS272ACDT and TS272CDT: 0°C to 70°C operating range, Cut Tape packaging
TS272AIDT and TS272IDT: -40°C to 125°C operating range, Tape & Reel packaging
TS272BIDT: -40°C to 125°C operating range, Tape & Reel packaging, lowest input offset voltage (250 µV)

Tertiary Substitutes: STMicroelectronics TS27L2 Series (Ultra-Low Power)

TS27L2ACDT, TS27L2AIDT, and TS27L2BIDT are suitable for battery-powered or ultra-low-power applications. These parts reduce supply current to 10 µA per channel (vs. 285 µA for TLC27M2BCD). Trade-offs include reduced slew rate (0.04 V/µs) and gain bandwidth product (100 kHz). All TS27L2 variants are Active products. Selection depends on operating temperature and packaging requirements:

TS27L2ACDT: 0°C to 70°C operating range, Tape & Reel packaging
TS27L2AIDT: -40°C to 125°C operating range, Cut Tape packaging
TS27L2BIDT: -40°C to 125°C operating range, Tape & Reel packaging, lowest input offset voltage (250 µV)

Not Recommended: LM432MA/NOPB

LM432MA/NOPB is classified as Obsolete and should not be selected for new designs. Although this part shares 8-SOIC packaging and dual-channel configuration, it is a general-purpose amplifier with different electrical characteristics (3 nA input bias current, 600 µV input offset voltage, 150 µA supply current). Substitution requires comprehensive circuit redesign and performance verification.

Frequently Asked Questions (FAQ)

Q1: Can TLC27M2BCDR directly replace TLC27M2BCD without circuit modification?

A: Yes. TLC27M2BCDR is a direct electrical equivalent with identical specifications. The only difference is packaging format (Tape & Reel vs. Tube). Both parts use the same 8-SOIC footprint and pinout. No circuit modification is required.

Q2: What are the key differences between TLC27M2BCD and TS272 series substitutes?

A: TS272 series parts offer superior performance: slew rate of 5.5 V/µs (vs. 0.62 V/µs), gain bandwidth product of 3.5 MHz (vs. 635 kHz), and output current of 45 mA (vs. 30 mA). However, TS272 parts have higher supply current (1 mA vs. 285 µA per channel). All parts maintain CMOS topology, dual-channel configuration, and 8-SOIC packaging. Substitution is suitable for applications where higher bandwidth and slew rate are beneficial or neutral.

Q3: When should TS27L2 series parts be selected instead of TLC27M2BCD?

A: TS27L2 series parts are selected for battery-powered or ultra-low-power applications where supply current minimization is critical. These parts consume only 10 µA per channel (vs. 285 µA). The trade-off is significantly reduced slew rate (0.04 V/µs vs. 0.62 V/µs) and gain bandwidth product (100 kHz vs. 635 kHz). TS27L2 substitution requires verification that application bandwidth requirements are met.

Q4: Are all substitute parts RoHS3 Compliant?

A: Yes. All substitute parts listed (TLC27M2BCDR, TS272 series, TS27L2 series, and LM432MA/NOPB) are ROHS3 Compliant with MSL 1 rating and REACH Unaffected status, matching TLC27M2BCD compliance certifications.

Q5: What is the difference between Cut Tape and Tape & Reel packaging?

A: Both Cut Tape (CT) and Tape & Reel (TR) are surface mount packaging formats suitable for automated assembly. Tape & Reel is continuous reel format for high-volume production. Cut Tape is pre-cut segments for lower-volume or mixed-component orders. Electrical performance and footprint are identical; selection depends on production volume and assembly equipment compatibility.

Q6: Can LM432MA/NOPB be used as a substitute?

A: LM432MA/NOPB is not recommended for new designs. This part is Obsolete and has different electrical characteristics (general-purpose amplifier vs. CMOS amplifier). Input bias current is 3 nA (vs. 0.7 pA), input offset voltage is 600 µV (vs. 224 µV), and supply current is 150 µA (vs. 285 µA). Substitution requires complete circuit redesign and performance validation.

Q7: Which substitute part has the lowest input offset voltage?

A: TS272BIDT and TS27L2BIDT both have input offset voltage of 250 µV, which is lower than TLC27M2BCD (224 µV). However, this difference is within typical application tolerances. TS272BIDT is recommended for applications requiring enhanced performance with extended temperature range (-40°C to 125°C).

Q8: What inventory considerations should guide substitute selection?

A: TLC27M2BCD has Last Time Buy status with 1125 pcs remaining inventory. TLC27M2BCDR (Active, 2600 pcs) is the immediate substitute. For long-term availability, TS272 series parts offer the highest inventory: TS272CDT (17007 pcs) and TS272IDT (21553 pcs). TS27L2 series parts also have substantial inventory (3120 to 10400 pcs).

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