TLC25L2CD Equivalent & Substitute Parts

Part Overview

The TLC25L2CD is a CMOS amplifier integrated circuit manufactured by Texas Instruments, configured as a 2-circuit single-ended amplifier in an 8-SOIC surface mount package. This device operates across a wide supply voltage range of 1.4 V to 16 V and is designed for low-power applications with a supply current of 29 µA per channel. The TLC25L2CD is designated as Last Time Buy, indicating that production has been discontinued and existing inventory represents the final availability from the manufacturer. Identifying equivalent and substitute parts is necessary to ensure design continuity and long-term component availability for new production runs and system maintenance.

Key Parameters

Parameter	Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	2	—
Output Type	Single-Ended	—
Slew Rate	2.9	V/µs
Gain Bandwidth Product	110	kHz
Current - Input Bias	0.7	pA
Voltage - Input Offset	1.1	mV
Current - Supply (x2 Channels)	29	µA
Voltage - Supply Span (Min)	1.4	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 TLC25L2CD is determined by compatibility across the following critical parameters: amplifier type (CMOS), number of circuits (2), package format (8-SOIC surface mount), supply voltage range compatibility, and operating temperature range. The substitute parts are grouped into two categories based on functional characteristics:

Category 1: Direct CMOS Amplifier Substitutes (Texas Instruments LinCMOS™ Series) These parts maintain the CMOS amplifier architecture and are from the same manufacturer series. The TLC27L2BCDR shares the same base product family and operating temperature range as the TLC25L2CD, with compatible supply voltage specifications (3 V to 16 V minimum vs. 1.4 V to 16 V for the main part).

Category 2: CMOS Amplifier Substitutes (STMicroelectronics TS272 and TS27L2 Series) These parts provide CMOS amplifier functionality in the same 8-SOIC package with compatible supply voltage ranges (3 V to 16 V). The TS272 series offers higher gain bandwidth product (3.5 MHz) and slew rate (5.5 V/µs) compared to the TLC25L2CD. The TS27L2 series provides lower slew rate (0.04 V/µs) and gain bandwidth product (100 kHz), more closely matching the TLC25L2CD performance profile.

Category 3: General Purpose Amplifier Substitute The LM432MA/NOPB is a general-purpose amplifier with different performance characteristics, including higher gain bandwidth product (1 MHz) and higher supply current (150 µA). This part is designated as Obsolete and is included for reference only.

Substitution logic is based on: (1) matching package type (8-SOIC), (2) compatible supply voltage ranges, (3) CMOS amplifier type, (4) dual-circuit configuration, and (5) surface mount mounting compatibility.

Parameter Comparison

Parameter	TLC25L2CD	TLC27L2BCDR	TS272ACDT	TS272AIDT	TS272BIDT	TS272CDT	TS272IDT	TS27L2ACDT	TS27L2AIDT	TS27L2BIDT	LM432MA/NOPB
Amplifier Type	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	General Purpose
Number of Circuits	2	2	2	2	2	2	2	2	2	2	2
Slew Rate (V/µs)	2.9	0.03	5.5	5.5	5.5	5.5	5.5	0.04	0.04	0.04	—
Gain Bandwidth Product (kHz)	110	110	3500	3500	3500	3500	3500	100	100	100	1000
Current - Input Bias (pA)	0.7	0.6	1	1	1	1	1	1	1	1	3
Voltage - Input Offset (mV)	1.1	0.204	0.9	0.9	0.25	1.1	1.1	0.9	1.1	0.25	0.6
Current - Supply (µA, x2 Channels)	29	20	1000	1000	1000	1000	1000	10	10	10	150
Voltage - Supply Span Min (V)	1.4	3	3	3	3	3	3	3	3	3	2.5
Voltage - Supply Span Max (V)	16	16	16	16	16	16	16	16	16	16	16
Operating Temperature (°C)	0 to 70	0 to 70	0 to 70	-40 to 125	-40 to 125	0 to 70	-40 to 125	0 to 70	-40 to 125	-40 to 125	-40 to 85
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Last Time Buy	Active	Active	Active	Active	Active	Active	Active	Active	Active	Obsolete

Engineering Selection Recommendations

Primary Substitutes (Recommended for New Designs)

The TLC27L2BCDR is the preferred substitute for the TLC25L2CD. Both devices are manufactured by Texas Instruments within the LinCMOS™ series, share identical package specifications (8-SOIC), and operate across compatible supply voltage ranges (3 V to 16 V maximum). The TLC27L2BCDR maintains the same operating temperature range (0°C to 70°C) and provides equivalent dual-circuit CMOS amplifier functionality. The TLC27L2BCDR is designated as Active product status, ensuring long-term availability and supply continuity. Both parts are ROHS3 compliant with MSL 1 rating.

The TS27L2 series (TS27L2ACDT, TS27L2AIDT, TS27L2BIDT) from STMicroelectronics provides functional equivalence with matching slew rate (0.04 V/µs) and gain bandwidth product (100 kHz) characteristics. These parts are Active status and available in multiple temperature grades. The TS27L2ACDT and TS27L2AIDT support extended temperature ranges (-40°C to 125°C), suitable for applications requiring broader thermal operation. All TS27L2 variants are ROHS3 compliant with MSL 1 rating.

Secondary Substitutes (Performance Trade-offs)

The TS272 series (TS272ACDT, TS272AIDT, TS272BIDT, TS272CDT, TS272IDT) offers higher performance characteristics with slew rate of 5.5 V/µs and gain bandwidth product of 3.5 MHz. These parts are suitable for applications where increased bandwidth and faster signal response are acceptable. All TS272 variants are Active status, ROHS3 compliant, and available in multiple temperature grades. The TS272AIDT and TS272BIDT support extended temperature operation (-40°C to 125°C).

Not Recommended

The LM432MA/NOPB is designated as Obsolete and should not be selected for new designs. While it provides dual-circuit amplifier functionality in the same 8-SOIC package, its obsolete status presents supply risk and long-term availability concerns.

Frequently Asked Questions (FAQ)

Q: Can the TLC27L2BCDR directly replace the TLC25L2CD in existing designs?

A: The TLC27L2BCDR is functionally compatible with the TLC25L2CD for applications operating within the 3 V to 16 V supply range. Both devices are dual-circuit CMOS amplifiers in 8-SOIC packages with identical operating temperature ranges (0°C to 70°C). The primary design consideration is the minimum supply voltage: the TLC25L2CD operates from 1.4 V while the TLC27L2BCDR requires a minimum of 3 V. Designs operating below 3 V supply voltage cannot use the TLC27L2BCDR as a substitute.

Q: What is the difference between the TS27L2 and TS272 series?

A: Both series are CMOS dual-circuit amplifiers in 8-SOIC packages from STMicroelectronics. The TS27L2 series has lower slew rate (0.04 V/µs) and lower gain bandwidth product (100 kHz), matching the performance profile of the TLC25L2CD. The TS272 series has higher slew rate (5.5 V/µs) and higher gain bandwidth product (3.5 MHz), providing increased bandwidth and faster response. Selection depends on application bandwidth requirements.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). The TLC25L2CD is also ROHS3 compliant with MSL 1 rating. All parts meet the same environmental and regulatory compliance standards.

Q: What is the significance of the product status designation?

A: The TLC25L2CD is designated Last Time Buy, indicating that Texas Instruments has discontinued production and existing inventory represents final availability. All recommended substitute parts (TLC27L2BCDR and TS27L2 series) are designated Active, ensuring continued manufacturing and long-term supply availability. The LM432MA/NOPB is Obsolete and should not be used for new designs due to supply discontinuation.

Q: Can I use a substitute part with an extended temperature range in a design specified for 0°C to 70°C operation?

A: Yes. Parts with extended temperature ranges (such as TS27L2AIDT and TS272AIDT operating from -40°C to 125°C) are fully compatible with designs specified for narrower temperature ranges (0°C to 70°C). The extended range provides additional design flexibility and may be beneficial for applications subject to environmental temperature variations.

Q: What packaging options are available for substitute parts?

A: Substitute parts are available in multiple packaging formats: Tube, Tape & Reel (TR), and Cut Tape (CT) & Digi-Reel®. The original TLC25L2CD is supplied in Tube packaging. The TLC27L2BCDR is available in Tape & Reel format. The TS27L2 and TS272 series are available in multiple formats. Packaging selection depends on production volume and assembly process requirements.

Q: How do input offset voltage specifications affect substitution?

A: Input offset voltage varies across substitute parts, ranging from 0.204 mV (TLC27L2BCDR) to 1.1 mV (TLC25L2CD, TS272CDT, TS272IDT, TS27L2ACDT). For precision analog applications requiring tight offset specifications, the TLC27L2BCDR with 0.204 mV offset provides superior performance. For general-purpose applications, offset voltage differences are typically not critical. Application-specific circuit design may require offset compensation adjustments when substituting parts with significantly different offset specifications.

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