TS272BCDT Equivalent & Substitute Parts

Part Overview

The TS272BCDT is a CMOS dual-channel operational amplifier manufactured by STMicroelectronics in an 8-SOIC surface mount package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The TS272BCDT delivers 2 circuits with a 5.5 V/µs slew rate and 3.5 MHz gain bandwidth product, suitable for general-purpose amplification applications requiring low input bias current and moderate supply voltage operation.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	TS272BCDT	—
Manufacturer	STMicroelectronics	—
Amplifier Type	CMOS	—
Number of Circuits	2	—
Slew Rate	5.5	V/µs
Gain Bandwidth Product	3.5	MHz
Current - Input Bias	1	pA
Voltage - Input Offset	250	µV
Current - Supply (per Channel)	1	mA
Current - Output / Channel	45	mA
Voltage - Supply Span (Min)	3	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	—
Product Status	Obsolete	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the TS272BCDT is determined by the following critical parameters:

Mechanical Compatibility:

Package type: 8-SOIC (0.154", 3.90mm Width)
Mounting type: Surface Mount
Pin count and footprint alignment

Electrical Compatibility:

Number of circuits: 2 channels
Amplifier type: CMOS technology preferred for low input bias current
Supply voltage range: Minimum 3 V to maximum 16 V
Operating temperature range: 0°C to 70°C
Slew rate: 5.5 V/µs (performance metric)
Gain bandwidth product: 3.5 MHz (performance metric)
Input bias current: 1 pA (ultra-low specification)
Output current capability: 45 mA per channel

Compliance Requirements:

RoHS3 compliance
Moisture sensitivity level: 1 (Unlimited)

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

Category A - High-Performance CMOS Substitutes (Slew Rate ≥ 2.9 V/µs): TLC252ACD, TLC252CD, TLC252CDR maintain comparable slew rates and gain bandwidth products within acceptable operating ranges.

Category B - Low-Power CMOS Substitutes (Slew Rate 0.032 V/µs): TLC1078CD, TLC1078CDR, TLC1078ID, TLC1078IDR, TLC25L2ACD, TLC25L2CD provide ultra-low supply current operation with reduced bandwidth, suitable for power-constrained applications.

Category C - General-Purpose Alternatives: LM432MA/NOPB offers broader temperature range operation but with different electrical characteristics.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Circuits	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (µV)	Supply Current (mA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package	Status
TS272BCDT	STMicroelectronics	CMOS	2	5.5	3.5	1	250	1	45	3	16	0–70	8-SOIC	Obsolete
TLC252ACD	Texas Instruments	CMOS	2	2.9	2.2	1	900	1.9	—	1.4	16	0–70	8-SOIC	Last Time Buy
TLC252CD	Texas Instruments	CMOS	2	2.9	2.2	0.6	1100	1.9	—	1.4	16	0–70	8-SOIC	Last Time Buy
TLC252CDR	Texas Instruments	CMOS	2	2.9	2.2	0.6	1100	1.9	—	1.4	16	0–70	8-SOIC	Active
TLC1078CD	Texas Instruments	CMOS	2	0.032	0.11	1	180	0.029	30	1.4	16	0–70	8-SOIC	Last Time Buy
TLC1078CDR	Texas Instruments	CMOS	2	0.032	0.11	1	180	0.029	30	1.4	16	0–70	8-SOIC	Active
TLC1078ID	Texas Instruments	CMOS	2	0.032	0.11	1	180	0.029	30	3	16	−40–85	8-SOIC	Active
TLC1078IDR	Texas Instruments	CMOS	2	0.032	0.11	1	180	0.029	30	3	16	−40–85	8-SOIC	Active
TLC25L2ACD	Texas Instruments	CMOS	2	2.9	0.11	50	900	0.029	—	1.4	16	0–70	8-SOIC	Last Time Buy
TLC25L2CD	Texas Instruments	CMOS	2	2.9	0.11	0.7	1100	0.029	—	1.4	16	0–70	8-SOIC	Last Time Buy
LM432MA/NOPB	Texas Instruments	General Purpose	2	—	1	3	600	0.15	30	2.5	16	−40–85	8-SOIC	Obsolete

Engineering Selection Recommendations

For Direct Performance Replacement (Highest Compatibility):

TLC252CDR is the primary substitute for the TS272BCDT. This part maintains CMOS amplifier architecture with dual circuits in an 8-SOIC package. The TLC252CDR operates within the same supply voltage range (1.4 V to 16 V) and temperature range (0°C to 70°C). Although slew rate is reduced from 5.5 V/µs to 2.9 V/µs and gain bandwidth product decreases from 3.5 MHz to 2.2 MHz, these parameters remain suitable for general-purpose amplification. The TLC252CDR holds Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Tape & Reel packaging matches the original TS272BCDT format.

For Extended Temperature Operation:

TLC1078IDR provides Active product status with extended operating temperature range (−40°C to 85°C) compared to the TS272BCDT (0°C to 70°C). This part maintains CMOS technology, dual-circuit configuration, and 8-SOIC packaging. Supply voltage range is compatible (3 V to 16 V minimum). However, slew rate and gain bandwidth product are significantly reduced (0.032 V/µs and 110 kHz respectively), limiting use to low-frequency applications. Input bias current remains at 1 pA. This substitute is appropriate when extended temperature operation is required and bandwidth constraints are acceptable.

For Ultra-Low Power Applications:

TLC1078CDR or TLC1078ID deliver ultra-low supply current (29 µA per channel) compared to the TS272BCDT (1 mA per channel). These parts maintain CMOS architecture and dual-circuit configuration in 8-SOIC packages. Supply current reduction of approximately 97% makes these substitutes suitable for battery-powered or energy-constrained systems. Slew rate and bandwidth are reduced, restricting use to low-frequency signal processing. Both parts maintain 1 pA input bias current and RoHS3 compliance.

Compliance Verification:

All substitute parts listed maintain RoHS3 compliance, moisture sensitivity level 1 (Unlimited), and REACH unaffected status, matching the TS272BCDT certification profile. All parts are classified under HTSUS code 8542.33.0001 and ECCN EAR99.

Frequently Asked Questions (FAQ)

Q: Can TLC252CDR be used as a direct pin-for-pin replacement for TS272BCDT?

A: Yes. Both parts use 8-SOIC packaging with identical pinout configuration. Surface mount footprints are compatible. Electrical operation within the specified supply voltage range (3 V to 16 V) and temperature range (0°C to 70°C) is supported. Design verification is required to confirm that reduced slew rate (2.9 V/µs versus 5.5 V/µs) and gain bandwidth product (2.2 MHz versus 3.5 MHz) meet application requirements.

Q: What is the primary difference between TLC252CDR and TLC1078CDR?

A: TLC252CDR operates at higher performance levels with 2.9 V/µs slew rate and 2.2 MHz gain bandwidth product, consuming 1.9 mA supply current per channel. TLC1078CDR operates at ultra-low power with 0.032 V/µs slew rate, 110 kHz bandwidth, and only 29 µA supply current per channel. Selection depends on whether the application prioritizes bandwidth performance or power consumption.

Q: Why is the TS272BCDT classified as obsolete?

A: Obsolete status indicates the part is no longer manufactured by STMicroelectronics and is not available through standard distribution channels. Existing inventory may be available from secondary sources, but long-term procurement is not guaranteed. Substitution with active-status parts such as TLC252CDR or TLC1078IDR is recommended for new designs and ongoing production.

Q: Are there temperature range limitations when substituting the TS272BCDT?

A: The TS272BCDT operates from 0°C to 70°C. Most substitute parts (TLC252CDR, TLC1078CDR, TLC25L2CD) maintain this same range. However, TLC1078ID and TLC1078IDR extend operation to −40°C to 85°C. If your application requires operation below 0°C or above 70°C, select TLC1078ID or TLC1078IDR. If operation is limited to 0°C to 70°C, all listed substitutes are compatible.

Q: What is the impact of reduced slew rate on circuit performance?

A: Slew rate determines the maximum rate of voltage change at the amplifier output. The TS272BCDT provides 5.5 V/µs; TLC252CDR provides 2.9 V/µs. For low-frequency applications (audio, sensor signal conditioning, DC amplification), this reduction has minimal impact. For high-frequency or fast-transient applications, reduced slew rate may introduce distortion or limit bandwidth. Verify that your application's signal frequencies and transient requirements are compatible with the substitute part's slew rate specification.

Q: Can LM432MA/NOPB replace the TS272BCDT?

A: LM432MA/NOPB is a general-purpose operational amplifier with different electrical characteristics. Input bias current is 3 nanoamperes (versus 1 picoampere for TS272BCDT), representing a 3000× increase. Gain bandwidth product is 1 MHz (versus 3.5 MHz). Supply current is 150 µA per channel (versus 1 mA). While package and pin count are compatible, the significant differences in input bias current and bandwidth make this substitute suitable only for applications where these parameter changes are acceptable. This part is also classified as obsolete.

Q: What packaging options are available for substitute parts?

A: TLC252CDR and TLC1078CDR are supplied in Tape & Reel (TR) format, matching the TS272BCDT packaging. TLC252CD, TLC1078CD, TLC25L2CD are supplied in Tube format. TLC1078ID is supplied without specified packaging designation. Verify packaging format compatibility with your assembly process before procurement.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (TLC252 series, TLC1078 series, TLC25L2 series, and LM432MA/NOPB) maintain RoHS3 compliance status, matching the TS272BCDT certification. All parts are classified as REACH unaffected with moisture sensitivity level 1 (Unlimited).

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