TLC25L2CDR Equivalent & Substitute Parts

Part Overview

The TLC25L2CDR is a CMOS amplifier integrated circuit manufactured by Texas Instruments, configured as a dual-channel (2 circuit) operational 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 pair.

The TLC25L2CDR is designated as Last Time Buy, indicating that Texas Instruments has discontinued this product line. Identification of equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term production requirements for applications currently utilizing this component.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	TLC25L2CDR	—
Manufacturer	Texas Instruments	—
Amplifier Type	CMOS	—
Number of Circuits	2	—
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
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
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TLC25L2CDR is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Package type: 8-SOIC surface mount form factor
Number of circuits: 2 independent amplifier channels
Supply voltage range: Must encompass or be compatible with 1.4 V to 16 V operation
Amplifier type: CMOS technology preferred for low-power characteristics
Mounting type: Surface mount

Performance Parameters Affecting Substitution:

Slew rate (2.9 V/µs for TLC25L2CDR)
Gain bandwidth product (110 kHz for TLC25L2CDR)
Input bias current (0.7 pA for TLC25L2CDR)
Input offset voltage (1.1 mV for TLC25L2CDR)
Supply current per channel pair (29 µA for TLC25L2CDR)

Substitute parts are grouped into two categories based on performance alignment:

Category A - Direct Performance Alignment (Low-Power, Low-Bandwidth): TLC27L2CDR, TS27L2ACDT, TS27L2AIDT, TS27L2BIDT

These parts maintain CMOS amplifier architecture with 2 circuits in 8-SOIC packaging and operate within compatible supply voltage ranges. They exhibit similar low-power supply current characteristics (10–20 µA per channel pair) and comparable gain bandwidth products (100–110 kHz).

Category B - Enhanced Performance (Higher Bandwidth, Increased Slew Rate): TS272ACDT, TS272AIDT, TS272BIDT, TS272CDT, TS272IDT

These parts provide higher slew rate (5.5 V/µs) and significantly higher gain bandwidth product (3.5 MHz), suitable for applications requiring faster signal response while maintaining 2-circuit CMOS configuration in 8-SOIC packaging.

Category C - General Purpose Alternative: LM432MA/NOPB

This part offers general-purpose amplifier functionality with extended operating temperature range (−40°C to 85°C) but operates at higher supply current (150 µA per channel pair) and is designated as Obsolete.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Number of Circuits	Package	Slew Rate (V/µs)	GBW (kHz)	Input Bias (pA)	Input Offset (mV)	Supply Current (µA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Status
TLC25L2CDR	Texas Instruments	CMOS	2	8-SOIC	2.9	110	0.7	1.1	29	1.4	16	0 to 70	Last Time Buy
TLC27L2CDR	Texas Instruments	CMOS	2	8-SOIC	0.03	110	0.6	1.1	20	3	16	0 to 70	Active
TS272ACDT	STMicroelectronics	CMOS	2	8-SOIC	5.5	3500	1	0.9	1000	3	16	0 to 70	Active
TS272AIDT	STMicroelectronics	CMOS	2	8-SOIC	5.5	3500	1	0.9	1000	3	16	−40 to 125	Active
TS272BIDT	STMicroelectronics	CMOS	2	8-SOIC	5.5	3500	1	0.25	1000	3	16	−40 to 125	Active
TS272CDT	STMicroelectronics	CMOS	2	8-SOIC	5.5	3500	1	1.1	1000	3	16	0 to 70	Active
TS272IDT	STMicroelectronics	CMOS	2	8-SOIC	5.5	3500	1	1.1	1000	3	16	−40 to 125	Active
TS27L2ACDT	STMicroelectronics	CMOS	2	8-SOIC	0.04	100	1	0.9	10	3	16	0 to 70	Active
TS27L2AIDT	STMicroelectronics	CMOS	2	8-SOIC	0.04	100	1	1.1	10	3	16	−40 to 125	Active
TS27L2BIDT	STMicroelectronics	CMOS	2	8-SOIC	0.04	100	1	0.25	10	3	16	−40 to 125	Active
LM432MA/NOPB	Texas Instruments	General Purpose	2	8-SOIC	—	1000	3	0.6	150	2.5	16	−40 to 85	Obsolete

Engineering Selection Recommendations

For Direct Replacement with Active Product Status:

The TLC27L2CDR is the primary recommended substitute. It is manufactured by Texas Instruments (same original manufacturer), maintains Active product status, operates within the same supply voltage range (3 V to 16 V), and preserves the CMOS dual-channel 8-SOIC architecture. The TLC27L2CDR exhibits lower supply current (20 µA versus 29 µA per channel pair) and maintains equivalent gain bandwidth product (110 kHz). The minimum supply voltage requirement increases from 1.4 V to 3 V; applications operating below 3 V require alternative evaluation.

For Extended Temperature Range Applications:

TS27L2AIDT and TS27L2BIDT (STMicroelectronics) provide operating temperature range of −40°C to 125°C compared to the TLC25L2CDR's 0°C to 70°C. These parts maintain low-power characteristics (10 µA per channel pair) and 100 kHz gain bandwidth product. TS27L2BIDT offers superior input offset voltage specification (0.25 mV versus 1.1 mV).

For Higher Performance Requirements:

TS272 series parts (TS272ACDT, TS272AIDT, TS272BIDT, TS272CDT, TS272IDT) provide significantly higher slew rate (5.5 V/µs) and gain bandwidth product (3.5 MHz). These parts are suitable for applications requiring faster signal response. Supply current increases to 1 mA per channel pair. Extended temperature variants (AIDT, IDT) operate from −40°C to 125°C.

Compliance and Certification:

All recommended substitute parts maintain ROHS3 compliance, MSL Level 1 (Unlimited), and REACH Unaffected status, consistent with the original TLC25L2CDR specifications.

Obsolete Part Avoidance:

LM432MA/NOPB is designated Obsolete and should not be selected for new designs or long-term production commitments despite its general-purpose amplifier functionality.

Frequently Asked Questions (FAQ)

Q1: Can TLC27L2CDR directly replace TLC25L2CDR in all applications?

A: TLC27L2CDR is functionally compatible for most applications. The primary constraint is the minimum supply voltage: TLC27L2CDR requires 3 V minimum, while TLC25L2CDR operates from 1.4 V. Applications operating below 3 V require alternative evaluation. Both parts maintain identical 8-SOIC packaging, dual-channel CMOS architecture, and 110 kHz gain bandwidth product.

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

A: TS272 series provides higher performance: slew rate of 5.5 V/µs and gain bandwidth product of 3.5 MHz, compared to TS27L2 series with 0.04 V/µs slew rate and 100 kHz gain bandwidth product. TS27L2 series maintains lower supply current (10 µA per channel pair) suitable for power-constrained applications. Both series are available in 8-SOIC packaging with CMOS dual-channel configuration.

Q3: Are there packaging differences between substitute parts?

A: All substitute parts are available in 8-SOIC (0.154", 3.90mm width) surface mount package, maintaining mechanical and electrical compatibility with TLC25L2CDR. Some variants specify 8-SO as the supplier device package designation; this refers to the same physical form factor with minor nomenclature variation.

Q4: Which substitute part offers the best low-power performance?

A: TS27L2ACDT, TS27L2AIDT, and TS27L2BIDT offer the lowest supply current at 10 µA per channel pair, compared to TLC25L2CDR's 29 µA. These parts are optimized for battery-powered and energy-constrained applications while maintaining 100 kHz gain bandwidth product and CMOS architecture.

Q5: What is the significance of temperature range variants (CDT vs. IDT)?

A: Temperature range designations indicate operating temperature specifications. CDT variants typically operate 0°C to 70°C (commercial range), while IDT variants operate −40°C to 125°C (industrial range). Selection depends on application environment. Industrial-range parts (IDT) support wider temperature extremes at equivalent electrical performance.

Q6: Can TS272 series parts be used in applications designed for TLC25L2CDR?

A: TS272 series parts are electrically compatible but represent enhanced performance. Higher slew rate (5.5 V/µs versus 2.9 V/µs) and gain bandwidth product (3.5 MHz versus 110 kHz) may alter circuit behavior in bandwidth-limited or phase-sensitive applications. Increased supply current (1 mA versus 29 µA per channel pair) impacts power budget. Circuit validation is required for performance-critical applications.

Q7: Why is LM432MA/NOPB not recommended as a substitute?

A: LM432MA/NOPB is designated Obsolete, indicating discontinued production and unavailable future supply. Additionally, it operates at significantly higher supply current (150 µA per channel pair) and is classified as general-purpose amplifier rather than CMOS, making it unsuitable for low-power design requirements. Active alternatives provide superior long-term availability and performance alignment.

Q8: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance, MSL Level 1 (Unlimited), and REACH Unaffected status, consistent with TLC25L2CDR environmental and regulatory requirements.

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