TLC25M2CDR Equivalent & Substitute Parts

Part Overview

The TLC25M2CDR is a CMOS amplifier integrated circuit manufactured by Texas Instruments, configured as a 2-circuit operational amplifier in an 8-SOIC surface mount package. This device features open drain output architecture and operates across a wide supply voltage range of 1.4V to 16V. The TLC25M2CDR is classified as an obsolete product, indicating that direct procurement from original manufacturing sources is no longer available. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability for production, and support long-term system maintenance and repair operations.

Key Parameters

Parameter	Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	2	—
Output Type	Open Drain	—
Slew Rate	2.9	V/µs
Gain Bandwidth Product	1.7	MHz
Current - Input Bias	0.7	pA
Voltage - Input Offset	1.1	mV
Current - Supply (x2 Channels)	285	µA
Voltage - Supply Span (Min)	1.4	V
Voltage - Supply Span (Max)	16	V
Operating Temperature Range	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 TLC25M2CDR 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 specifications. The substitute parts identified fall into distinct performance categories based on slew rate and gain bandwidth product characteristics.

Primary substitution criteria:

Amplifier Type: CMOS technology
Circuit Count: 2 independent circuits
Package: 8-SOIC (0.154", 3.90mm Width) surface mount
Supply Voltage Range: Minimum 1.4V to 3V; Maximum 16V
Operating Temperature: 0°C to 70°C or extended range
RoHS3 Compliance and MSL Level 1

Performance-based grouping:

Group 1 - Standard Performance (TS272 Series): Slew rate 5.5V/µs, gain bandwidth product 3.5MHz. These parts exceed the TLC25M2CDR performance envelope and are suitable for applications requiring higher speed operation.

Group 2 - Low Power (TS27L2 Series): Slew rate 0.04V/µs, gain bandwidth product 100kHz, supply current 10µA per channel. These parts are optimized for ultra-low power applications and represent a different performance class.

Group 3 - General Purpose (LM432MA/NOPB): General purpose amplifier topology with 1MHz gain bandwidth product. Extended operating temperature range to 85°C.

Parameter Comparison

Parameter	TLC25M2CDR	LM432MA/NOPB	TS272ACDT	TS272AIDT	TS272BIDT	TS272CDT	TS272IDT	TS27L2ACDT	TS27L2AIDT	TS27L2BIDT	TS27L2CD
Amplifier Type	CMOS	General Purpose	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
Number of Circuits	2	2	2	2	2	2	2	2	2	2	2
Slew Rate (V/µs)	2.9	—	5.5	5.5	5.5	5.5	5.5	0.04	0.04	0.04	0.04
Gain Bandwidth Product (MHz)	1.7	1	3.5	3.5	3.5	3.5	3.5	0.1	0.1	0.1	0.1
Current - Input Bias (pA)	0.7	3	1	1	1	1	1	1	1	1	1
Voltage - Input Offset (mV)	1.1	0.6	0.9	0.9	0.25	1.1	1.1	0.9	1.1	0.25	1.1
Current - Supply (µA, x2 Channels)	285	150	1000	1000	1000	1000	1000	10	10	10	10
Voltage - Supply Span Min (V)	1.4	2.5	3	3	3	3	3	3	3	3	3
Voltage - Supply Span Max (V)	16	16	16	16	16	16	16	16	16	16	16
Operating Temperature (°C)	0 to 70	-40 to 85	0 to 70	-40 to 125	-40 to 125	0 to 70	-40 to 125	0 to 70	-40 to 125	-40 to 125	0 to 70
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Product Status	Obsolete	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For applications requiring performance equivalent to or exceeding TLC25M2CDR specifications:

The TS272 series (TS272ACDT, TS272AIDT, TS272BIDT, TS272CDT, TS272IDT) manufactured by STMicroelectronics represents the primary substitute category. All TS272 variants are active products with ROHS3 compliance and MSL Level 1 rating. These parts maintain the 8-SOIC package format and 16V maximum supply voltage compatibility. The TS272 series provides higher slew rate (5.5V/µs versus 2.9V/µs) and greater gain bandwidth product (3.5MHz versus 1.7MHz), making them suitable for applications where the TLC25M2CDR performance envelope is acceptable or where enhanced speed is beneficial.

Temperature range selection within TS272 series:

TS272ACDT and TS272CDT: 0°C to 70°C operating range (matches TLC25M2CDR)
TS272AIDT and TS272IDT: -40°C to 125°C extended range
TS272BIDT: -40°C to 125°C extended range with improved input offset voltage (250µV)

For ultra-low power applications:

The TS27L2 series (TS27L2ACDT, TS27L2AIDT, TS27L2BIDT, TS27L2CD) provides a distinct performance class optimized for power-constrained designs. Supply current is reduced to 10µA per channel (versus 285µA for TLC25M2CDR). These parts are active products with full ROHS3 compliance. The trade-off is significantly reduced slew rate (0.04V/µs) and gain bandwidth product (100kHz), suitable only for low-frequency signal conditioning applications.

For general purpose amplifier applications with extended temperature range:

The LM432MA/NOPB (Texas Instruments) offers an alternative general purpose amplifier topology with 1MHz gain bandwidth product and extended operating temperature range (-40°C to 85°C). This part is obsolete but remains available in inventory. Supply current is lower (150µA) compared to TLC25M2CDR.

Compliance and availability: All substitute parts listed maintain ROHS3 compliance and MSL Level 1 moisture sensitivity rating, ensuring compatibility with modern manufacturing and storage requirements. Active product status for the TS272 and TS27L2 series ensures long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can TS272 series parts directly replace TLC25M2CDR in existing designs?

A: TS272 series parts are pin-compatible within the 8-SOIC package and maintain compatible supply voltage ranges (3V to 16V maximum). However, the TLC25M2CDR minimum supply voltage is 1.4V while TS272 minimum is 3V. Designs operating below 3V supply voltage require alternative selection. The higher performance characteristics (5.5V/µs slew rate, 3.5MHz bandwidth) of TS272 parts are generally compatible with applications designed for TLC25M2CDR, as they exceed the original specifications.

Q: What is the significance of the different TS272 temperature grades?

A: TS272ACDT and TS272CDT operate from 0°C to 70°C, matching the TLC25M2CDR temperature range. TS272AIDT, TS272BIDT, and TS272IDT extend operation to -40°C to 125°C, providing wider environmental tolerance. Selection depends on the target application's temperature requirements. Extended range parts are suitable for industrial and automotive environments.

Q: Why does TS272BIDT have lower input offset voltage (250µV) compared to other variants?

A: Input offset voltage is a manufacturing parameter that varies by production grade. TS272BIDT represents a tighter specification grade, providing improved DC accuracy. This parameter is provided in the datasheet and does not affect pin compatibility or basic functionality. Selection should be based on the application's precision requirements.

Q: Are TS27L2 series parts suitable as direct replacements?

A: TS27L2 series parts are not direct replacements for general-purpose applications. These parts are optimized for ultra-low power operation (10µA supply current) but feature significantly reduced bandwidth (100kHz) and slew rate (0.04V/µs). They are suitable only for low-frequency signal conditioning, sensor interfaces, and power-constrained applications. High-frequency or fast-transient applications require TS272 series selection.

Q: What packaging options are available for substitute parts?

A: All substitute parts are available in 8-SOIC surface mount package, matching the TLC25M2CDR form factor. Packaging variants (Cut Tape, Tape & Reel, Tube) affect procurement and handling but do not impact electrical performance or pin compatibility. Selection should be based on production volume and assembly process requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all substitute parts listed (TS272 series, TS27L2 series, and LM432MA/NOPB) are ROHS3 compliant with MSL Level 1 moisture sensitivity rating. This ensures compatibility with modern manufacturing processes and environmental regulations.

Q: What is the minimum supply voltage for TS272 and TS27L2 series?

A: Both TS272 and TS27L2 series require a minimum supply voltage of 3V, compared to 1.4V for TLC25M2CDR. Applications operating at supply voltages below 3V cannot use these substitutes and require alternative component selection or circuit redesign.

Q: How do input bias current specifications compare?

A: TLC25M2CDR specifies 0.7pA input bias current, while all TS272 and TS27L2 variants specify 1pA. LM432MA/NOPB specifies 3nA. These differences are negligible for most applications. The TS272 and TS27L2 series maintain ultra-low input bias current characteristics suitable for high-impedance signal sources.

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