TLC252CDR Equivalent & Substitute Parts

Part Overview

The TLC252CDR is a CMOS dual-channel operational amplifier manufactured by Texas Instruments in 8-SOIC surface mount packaging. This device is classified as active product status and operates within the LinCMOS™ series. The TLC252CDR is specified for general-purpose amplification applications requiring low input bias current and low input offset voltage characteristics. Substitute parts are necessary when the primary device becomes unavailable, when alternative thermal operating ranges are required, or when different supply voltage specifications better match application requirements.

Key Parameters

Parameter	Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	2	—
Slew Rate	2.9	V/µs
Gain Bandwidth Product	2.2	MHz
Current - Input Bias	0.6	pA
Voltage - Input Offset	1.1	mV
Current - Supply (per Channel)	1.9	mA
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

Substitute parts for the TLC252CDR are selected based on the following criteria:

Primary Substitution Criteria:

Amplifier Type: CMOS
Number of Circuits: 2
Package / Case: 8-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Secondary Compatibility Parameters:

Voltage - Supply Span (Min): 1.4 V to 3 V acceptable
Voltage - Supply Span (Max): 16 V (all substitutes meet or exceed)
Operating Temperature Range: 0°C to 70°C (primary range); extended ranges acceptable
Current - Input Bias: 0.6 pA to 1 pA acceptable
Voltage - Input Offset: 250 µV to 1.1 mV acceptable

Substitute parts are grouped into two categories:

Category A - Direct Performance Substitutes (TS272 Series): Parts with higher slew rate (5.5 V/µs) and gain bandwidth product (3.5 MHz) than the main part. These provide enhanced performance while maintaining CMOS architecture and dual-channel configuration.

Category B - Low-Power Substitutes (TS27L2 Series): Parts with significantly reduced supply current (10 µA per channel versus 1.9 mA) and lower gain bandwidth product (100 kHz). These are suitable for power-constrained applications.

Category C - Obsolete General Purpose Alternative (LM432MA/NOPB): General purpose amplifier with different electrical characteristics and extended temperature range. Product status is obsolete.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (mV)	Supply Current/Ch (mA)	Temp Range (°C)	Product Status
TLC252CDR	Texas Instruments	CMOS	2.9	2.2	0.6	1.1	1.9	0 to 70	Active
TS272ACDT	STMicroelectronics	CMOS	5.5	3.5	1	0.9	1	0 to 70	Active
TS272AIDT	STMicroelectronics	CMOS	5.5	3.5	1	0.9	1	-40 to 125	Active
TS272BIDT	STMicroelectronics	CMOS	5.5	3.5	1	0.25	1	-40 to 125	Active
TS272CDT	STMicroelectronics	CMOS	5.5	3.5	1	1.1	1	0 to 70	Active
TS272IDT	STMicroelectronics	CMOS	5.5	3.5	1	1.1	1	-40 to 125	Active
TS27L2ACDT	STMicroelectronics	CMOS	0.04	0.1	1	0.9	0.01	0 to 70	Active
TS27L2AIDT	STMicroelectronics	CMOS	0.04	0.1	1	1.1	0.01	-40 to 125	Active
TS27L2BIDT	STMicroelectronics	CMOS	0.04	0.1	1	0.25	0.01	-40 to 125	Active
TS27L2CD	STMicroelectronics	CMOS	0.04	0.1	1	1.1	0.01	0 to 70	Active
LM432MA/NOPB	Texas Instruments	General Purpose	—	1	3	0.6	0.15	-40 to 85	Obsolete

Engineering Selection Recommendations

For Direct Replacement (Same Operating Temperature Range 0°C to 70°C):

Select TS272CDT when the TLC252CDR is unavailable and the application operates within 0°C to 70°C. This part maintains identical input offset voltage (1.1 mV) and operating temperature range while providing higher slew rate and gain bandwidth product. Both parts are active status and ROHS3 compliant.

For Extended Temperature Range Applications (-40°C to 125°C):

Select TS272IDT or TS272AIDT for applications requiring extended thermal operation. TS272IDT provides identical input offset voltage (1.1 mV) to the main part. TS272AIDT provides lower input offset voltage (0.9 mV). Both maintain CMOS architecture and active product status.

For Improved Input Offset Voltage Specification:

Select TS272BIDT when lower input offset voltage (0.25 mV) is required. This part operates across -40°C to 125°C and maintains all other CMOS dual-channel specifications.

For Low-Power Applications:

Select TS27L2CD or TS27L2ACDT when supply current must be minimized (10 µA per channel versus 1.9 mA). These parts operate within 0°C to 70°C. TS27L2AIDT or TS27L2BIDT extend the temperature range to -40°C to 125°C. Note that gain bandwidth product is reduced to 100 kHz.

Regarding LM432MA/NOPB:

This part is classified as obsolete product status. It is not recommended for new designs. The part exhibits different electrical characteristics (general purpose amplifier type, 3 nA input bias current, 150 µA supply current) and does not provide equivalent performance to the TLC252CDR.

Frequently Asked Questions (FAQ)

Q: Can TS272CDT be used as a direct replacement for TLC252CDR?

A: Yes. Both parts are CMOS dual-channel amplifiers in 8-SOIC packaging with identical input offset voltage (1.1 mV) and operating temperature range (0°C to 70°C). TS272CDT provides higher slew rate (5.5 V/µs versus 2.9 V/µs) and higher gain bandwidth product (3.5 MHz versus 2.2 MHz). Both are active status and ROHS3 compliant.

Q: What is the difference between TS272ACDT and TS272CDT?

A: Both are STMicroelectronics TS272 CMOS dual-channel amplifiers with identical electrical performance (5.5 V/µs slew rate, 3.5 MHz gain bandwidth product). The difference is input offset voltage: TS272ACDT specifies 0.9 mV while TS272CDT specifies 1.1 mV. Both operate 0°C to 70°C.

Q: Why would I select TS27L2 series instead of TS272 series?

A: The TS27L2 series is selected for power-constrained applications. Supply current is reduced to 10 µA per channel (versus 1 mA for TS272 series). This reduction comes with lower gain bandwidth product (100 kHz versus 3.5 MHz) and lower slew rate (0.04 V/µs versus 5.5 V/µs). Select TS27L2 only when bandwidth and slew rate requirements permit.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), matching the compliance profile of the TLC252CDR.

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

A: TS272 series parts specify minimum supply voltage of 3 V. The TLC252CDR specifies 1.4 V minimum. If the application operates below 3 V, TS272 series is not suitable. In this case, verify that the application can tolerate the higher minimum supply voltage or select an alternative substitute.

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

A: LM432MA/NOPB is classified as obsolete product status and is not recommended for new designs or as a substitute. The part exhibits significantly different electrical characteristics (general purpose amplifier type, 3 nA input bias current, 150 µA supply current per channel) compared to the TLC252CDR CMOS architecture.

Q: What packaging options are available for substitute parts?

A: Substitute parts are available in Tape & Reel (TR), Cut Tape (CT) & Digi-Reel®, and Tube packaging. All maintain the same 8-SOIC (0.154", 3.90mm Width) physical package. Select packaging based on procurement and assembly requirements.

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

A: TS272BIDT and TS27L2BIDT both specify 0.25 mV input offset voltage, which is lower than the TLC252CDR specification of 1.1 mV. TS272BIDT operates -40°C to 125°C with 1 mA supply current per channel. TS27L2BIDT operates -40°C to 125°C with 10 µA supply current per channel.

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