TLC252BCDR Equivalent & Substitute Parts

Part Overview

The TLC252BCDR is a CMOS amplifier integrated circuit manufactured by Texas Instruments, configured as a dual-channel operational amplifier in an 8-SOIC surface mount package. This device is classified as obsolete, indicating discontinued production and limited availability for new designs. The LinCMOS™ series architecture provides low-power CMOS amplification suitable for battery-operated and low-power applications. Due to its obsolete status, equivalent substitute parts with active production status are necessary for ongoing component procurement and design continuity.

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	290	µV
Current - Supply	1.9	mA (x2 Channels)
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 TLC252BCDR is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

Amplifier Type: CMOS technology
Number of Circuits: Dual-channel (2 circuits)
Voltage Supply Range: Minimum 1.4 V to maximum 16 V
Operating Temperature Range: 0°C to 70°C or extended range
Package Configuration: 8-SOIC surface mount

Performance Parameters:

Slew Rate: 2.9 V/µs (baseline)
Gain Bandwidth Product: 2.2 MHz (baseline)
Input Bias Current: 0.6 pA (baseline)
Input Offset Voltage: 290 µV (baseline)
Supply Current: 1.9 mA per channel (baseline)

Substitute parts are grouped into three categories based on performance characteristics:

Category 1 - Standard Performance CMOS Amplifiers (TS272 Series): Parts with slew rates of 5.5 V/µs and gain bandwidth products of 3.5 MHz, exceeding TLC252BCDR performance specifications while maintaining CMOS architecture and dual-channel configuration.

Category 2 - Low-Power CMOS Amplifiers (TS27L2 Series): Parts with reduced slew rates of 0.04 V/µs and gain bandwidth products of 100 kHz, suitable for ultra-low-power applications with relaxed bandwidth requirements.

Category 3 - General Purpose Amplifiers (LM432 Series): General-purpose operational amplifier with different electrical characteristics, including higher input bias current (3 nA) and lower supply current (150 µA per channel).

All substitute parts maintain 8-SOIC surface mount packaging, RoHS3 compliance, and MSL Level 1 moisture sensitivity rating.

Parameter Comparison

Parameter	TLC252BCDR	TS272ACDT	TS272AIDT	TS272BIDT	TS272CDT	TS272IDT	TS27L2ACDT	TS27L2AIDT	TS27L2BIDT	TS27L2CD	LM432MA/NOPB
Manufacturer	Texas Instruments	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	Texas Instruments
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	5.5	5.5	5.5	5.5	5.5	0.04	0.04	0.04	0.04	—
Gain Bandwidth Product (MHz)	2.2	3.5	3.5	3.5	3.5	3.5	0.1	0.1	0.1	0.1	1
Current - Input Bias (pA)	0.6	1	1	1	1	1	1	1	1	1	3000
Voltage - Input Offset (µV)	290	900	900	250	1100	1100	900	1100	250	1100	600
Current - Supply (mA x2 Channels)	1.9	1	1	1	1	1	0.01	0.01	0.01	0.01	0.15
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	-40 to 125	-40 to 125	0 to 70	-40 to 125	0 to 70	-40 to 125	-40 to 125	0 to 70	-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
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Obsolete
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

Primary Substitutes - TS272 Series (STMicroelectronics):

The TS272ACDT, TS272AIDT, TS272BIDT, TS272CDT, and TS272IDT represent the most direct functional equivalents to the TLC252BCDR. These parts maintain CMOS amplifier architecture with dual-channel configuration in 8-SOIC packaging. The TS272 series demonstrates active production status with substantial inventory availability (1,457 to 25,400 units), ensuring long-term component procurement reliability. All variants comply with RoHS3 and maintain MSL Level 1 moisture sensitivity ratings.

Selection within the TS272 series depends on operating temperature requirements and input offset voltage specifications:

TS272ACDT and TS272CDT: 0°C to 70°C operating range, matching TLC252BCDR temperature specifications
TS272AIDT and TS272IDT: Extended -40°C to 125°C operating range for broader environmental applications
TS272BIDT: -40°C to 125°C range with 250 µV input offset voltage, the lowest among TS272 variants

Secondary Substitutes - TS27L2 Series (STMicroelectronics):

The TS27L2ACDT, TS27L2AIDT, TS27L2BIDT, and TS27L2CD are ultra-low-power CMOS amplifiers suitable for applications where bandwidth requirements are relaxed and power consumption is critical. These parts operate at 10 µA supply current per channel, compared to 1.9 mA for the TLC252BCDR. The TS27L2 series maintains active production status with inventory ranging from 3,120 to 10,400 units. These parts are appropriate for battery-powered and energy-harvesting applications where the 100 kHz gain bandwidth product and 0.04 V/µs slew rate are acceptable.

Alternative Substitute - LM432MA/NOPB (Texas Instruments):

The LM432MA/NOPB is a general-purpose operational amplifier with different electrical characteristics. This part exhibits higher input bias current (3 nA versus 0.6 pA) and significantly lower supply current (150 µA per channel). The LM432 series is classified as obsolete, limiting its suitability for new designs despite Texas Instruments manufacturing origin. This part is listed for reference only and is not recommended as a primary substitute due to discontinued production status.

Compliance and Certification:

All recommended substitute parts maintain RoHS3 compliance and MSL Level 1 moisture sensitivity ratings, ensuring compatibility with modern manufacturing processes and environmental regulations. All parts are classified under ECCN EAR99 and HTSUS 8542.33.0001, maintaining consistent export and tariff classification with the original TLC252BCDR.

Frequently Asked Questions (FAQ)

Q: Can the TS272 series directly replace the TLC252BCDR in existing designs?

A: The TS272 series maintains electrical and mechanical compatibility with the TLC252BCDR. Both are dual-channel CMOS amplifiers in 8-SOIC packages with compatible supply voltage ranges (1.4 V to 16 V for TLC252BCDR; 3 V to 16 V for TS272). The TS272 series exhibits higher slew rate (5.5 V/µs versus 2.9 V/µs) and gain bandwidth product (3.5 MHz versus 2.2 MHz), representing performance improvements. Designs operating within the TLC252BCDR's electrical specifications will function with TS272 substitutes.

Q: What is the difference between TS272ACDT and TS272AIDT?

A: Both parts are identical in electrical specifications and package configuration. The primary difference is operating temperature range: TS272ACDT operates from 0°C to 70°C, while TS272AIDT operates from -40°C to 125°C. Selection depends on the application's environmental temperature requirements. TS272AIDT is suitable for industrial and automotive applications requiring extended temperature operation.

Q: When should the TS27L2 series be selected instead of the TS272 series?

A: The TS27L2 series is selected for applications where power consumption is the primary design constraint and bandwidth requirements are minimal. The TS27L2 operates at 10 µA supply current per channel compared to 1 mA for the TS272 series, representing a 100-fold reduction in power consumption. The TS27L2 series is appropriate for battery-powered devices, wireless sensor networks, and energy-harvesting applications where the 100 kHz gain bandwidth product is sufficient.

Q: Are all substitute parts available in the same packaging options?

A: All substitute parts are available in 8-SOIC surface mount packages, maintaining mechanical compatibility with the TLC252BCDR. Packaging options vary by part number: some are supplied in Cut Tape (CT) & Digi-Reel®, others in Tape & Reel (TR), and some in Tube packaging. Packaging selection does not affect electrical performance and is determined by procurement and assembly requirements.

Q: What is the significance of the input offset voltage differences among substitute parts?

A: Input offset voltage determines the DC error at the amplifier output when no signal is applied. The TLC252BCDR specifies 290 µV input offset voltage. Substitute parts range from 250 µV (TS272BIDT, TS27L2BIDT) to 1.1 mV (TS272CDT, TS272IDT, TS27L2AIDT, TS27L2CD). Lower input offset voltage reduces DC error in precision applications. Applications sensitive to DC accuracy should select parts with input offset voltage specifications matching or exceeding the original design requirements.

Q: Why is the LM432MA/NOPB listed as a substitute if it is obsolete?

A: The LM432MA/NOPB is included in the substitute list for reference and historical documentation purposes. This part was identified in the original TLC252BCDR substitute cross-reference data. However, due to its obsolete status and significantly different electrical characteristics (3 nA input bias current versus 0.6 pA, 150 µA supply current versus 1.9 mA), it is not recommended for new designs or as a primary replacement option.

Q: What is the minimum supply voltage requirement for TS272 substitutes compared to the TLC252BCDR?

A: The TLC252BCDR operates with a minimum supply voltage of 1.4 V, while the TS272 series requires a minimum of 3 V. Designs operating at supply voltages below 3 V cannot use TS272 substitutes. In such cases, the TS27L2 series also requires 3 V minimum supply voltage. If sub-3 V operation is required, alternative amplifier families must be evaluated.

Q: Are there temperature-specific variants within the TS272 series?

A: Yes. The TS272 series offers two temperature ranges: 0°C to 70°C (TS272ACDT, TS272CDT) and -40°C to 125°C (TS272AIDT, TS272BIDT, TS272IDT). The extended temperature range variants are suitable for automotive, industrial, and military applications. Standard temperature range variants are appropriate for consumer and commercial applications matching the TLC252BCDR's 0°C to 70°C specification.

Q: How does the gain bandwidth product affect circuit performance?

A: Gain bandwidth product (GBW) defines the maximum frequency at which the amplifier can operate at unity gain. The TLC252BCDR specifies 2.2 MHz GBW, while TS272 substitutes provide 3.5 MHz GBW. Higher GBW allows operation at higher frequencies or with higher closed-loop gains. The TS27L2 series provides 100 kHz GBW, limiting operation to lower frequency applications. Circuit designs must ensure the selected substitute's GBW meets or exceeds the application's frequency requirements.

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