TS272CD Equivalent & Substitute Parts

Part Overview

The TS272CD is a CMOS amplifier integrated circuit manufactured by STMicroelectronics, 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 in the market. The TS272CD operates across a supply voltage range of 3V to 16V with a gain bandwidth product of 3.5 MHz and a slew rate of 5.5V/µs, making it suitable for general-purpose analog signal conditioning applications. Due to its obsolete status and finite inventory, identifying equivalent substitute parts is necessary to ensure design continuity and long-term component availability for new production runs and system maintenance.

Key Parameters

Parameter	TS272CD Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	2	Channels
Slew Rate	5.5	V/µs
Gain Bandwidth Product	3.5	MHz
Current - Input Bias	1	pA
Voltage - Input Offset	1.1	mV
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	RoHS non-compliant	—

Substitute Part Grouping Explanation

Substitution of the TS272CD is determined by strict alignment of electrical and mechanical parameters. The primary substitution criteria are:

Critical Matching Parameters:

Amplifier Type: CMOS technology
Number of Circuits: Dual-channel configuration
Package / Case: 8-SOIC form factor with 0.154" (3.90mm) width
Mounting Type: Surface mount compatibility
Voltage - Supply Span: Minimum 3V to maximum 16V operating range

Performance Parameters for Functional Equivalence:

Slew Rate: 5.5V/µs or higher
Gain Bandwidth Product: 3.5 MHz or higher
Current - Input Bias: 1 pA or lower
Voltage - Input Offset: 1.1 mV or lower
Current - Output / Channel: 45 mA or higher

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

Category A - Full Performance Equivalents: Parts meeting or exceeding all critical electrical parameters while maintaining CMOS architecture and 8-SOIC packaging. These include TLC252CD, TLC252CDR, and TLC252ACD variants, which provide slew rates of 2.9V/µs and gain bandwidth products of 2.2 MHz. While these parameters are lower than the TS272CD, they remain within acceptable operational ranges for most applications.

Category B - Lower Performance Alternatives: Parts with reduced slew rate and gain bandwidth product specifications, including TLC1078CD, TLC1078CDR, TLC1078ID, and TLC1078IDR variants. These devices feature slew rates of 0.032V/µs and gain bandwidth products of 110 kHz, suitable only for applications with relaxed bandwidth requirements.

Category C - Partial Compatibility: The LM432MA/NOPB represents a general-purpose amplifier with different electrical characteristics, including higher input bias current (3 nA) and lower gain bandwidth product (1 MHz), and is included for reference only.

Parameter Comparison

Parameter	TS272CD	TLC252CD	TLC252CDR	TLC252ACD	TLC1078CD	TLC1078CDR	TLC1078ID	TLC1078IDR	TLC25L2CD	TLC25L2ACD	LM432MA/NOPB
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)	5.5	2.9	2.9	2.9	0.032	0.032	0.032	0.032	2.9	2.9	—
Gain Bandwidth Product (MHz)	3.5	2.2	2.2	2.2	0.11	0.11	0.11	0.11	0.11	0.11	1
Current - Input Bias (pA)	1	0.6	0.6	1	1	1	1	1	0.7	50	3000
Voltage - Input Offset (mV)	1.1	1.1	1.1	0.9	0.18	0.18	0.18	0.18	1.1	0.9	0.6
Current - Supply per Channel (mA)	1	1.9	1.9	1.9	0.029	0.029	0.029	0.029	0.029	0.029	0.15
Current - Output / Channel (mA)	45	—	—	—	30	30	30	30	30	30	30
Voltage - Supply Span Min (V)	3	1.4	1.4	1.4	1.4	1.4	3	3	1.4	1.4	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	0 to 70	0 to 70	0 to 70	0 to 70	-40 to 85	-40 to 85	0 to 70	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
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Last Time Buy	Active	Last Time Buy	Last Time Buy	Active	Active	Active	Last Time Buy	Last Time Buy	Obsolete
RoHS Status	RoHS non-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 - Active Product Status:

The TLC252CDR (Texas Instruments, Tape & Reel packaging) and TLC1078IDR (Texas Instruments, Tape & Reel packaging) are recommended as primary substitutes due to their active product status, ensuring long-term availability and supply chain stability. Both devices are ROHS3 compliant, addressing regulatory requirements that the obsolete TS272CD does not meet. The TLC252CDR provides superior performance alignment with a slew rate of 2.9V/µs and gain bandwidth product of 2.2 MHz, though these values are lower than the TS272CD specification. The TLC1078IDR offers extended operating temperature range (-40°C to 85°C) compared to the TS272CD (0°C to 70°C), providing broader environmental compatibility.

Secondary Substitutes - Last Time Buy Status:

The TLC252CD, TLC252ACD, TLC1078CD, TLC25L2CD, and TLC25L2ACD are classified as Last Time Buy products, indicating limited remaining inventory and imminent discontinuation. These parts maintain CMOS architecture and 8-SOIC packaging but offer finite availability windows. Selection of these alternatives should be reserved for applications where performance specifications align precisely with documented requirements and where supply chain risk is acceptable.

Compliance Considerations:

All substitute parts listed except LM432MA/NOPB are ROHS3 compliant, meeting modern environmental and regulatory standards. The TS272CD's RoHS non-compliant status makes migration to compliant alternatives necessary for new designs and systems subject to regulatory requirements. The REACH Unaffected status is consistent across all listed parts.

Packaging and Inventory:

Substitute parts are available in both Tube and Tape & Reel packaging formats. Tape & Reel variants (CDR, IDR suffixes) are preferred for high-volume production runs, while Tube packaging (CD, ID suffixes) is suitable for lower-volume applications. Current inventory levels range from 869 to 29,050 units across substitute options, providing adequate supply for component procurement planning.

Frequently Asked Questions (FAQ)

Q: Can the TLC252CDR directly replace the TS272CD in existing designs?

A: The TLC252CDR is mechanically and electrically compatible with the TS272CD, sharing identical 8-SOIC packaging and dual-channel CMOS architecture. However, the TLC252CDR exhibits lower slew rate (2.9V/µs versus 5.5V/µs) and lower gain bandwidth product (2.2 MHz versus 3.5 MHz). Direct substitution is valid only when application bandwidth and slew rate requirements do not exceed the TLC252CDR specifications. Circuit simulation or bench testing is necessary to confirm functional equivalence in bandwidth-critical applications.

Q: What is the difference between TLC1078CDR and TLC1078IDR?

A: Both devices share identical electrical specifications and CMOS architecture. The primary difference is operating temperature range: TLC1078CDR operates from 0°C to 70°C, while TLC1078IDR operates from -40°C to 85°C. The TLC1078IDR is suitable for extended temperature applications and industrial environments. Both are available in Tape & Reel packaging and maintain active product status.

Q: Why is the LM432MA/NOPB listed as a substitute if it has different specifications?

A: The LM432MA/NOPB is included for reference as a general-purpose dual-channel amplifier in 8-SOIC packaging. However, it is not a functional equivalent due to significantly different electrical characteristics, including higher input bias current (3 nA versus 1 pA) and lower gain bandwidth product (1 MHz versus 3.5 MHz). This part should be considered only for applications with relaxed precision and bandwidth requirements.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed except the LM432MA/NOPB are ROHS3 compliant. The TS272CD itself is RoHS non-compliant. Migration to ROHS3-compliant alternatives is necessary for designs subject to environmental regulations or customer compliance requirements.

Q: What is the significance of "Last Time Buy" product status?

A: Last Time Buy status indicates that the manufacturer has announced discontinuation and is accepting final orders before production ends. Parts with this designation have limited remaining inventory and will eventually become unavailable. Designs should prioritize Active status parts (TLC252CDR, TLC1078CDR, TLC1078ID, TLC1078IDR) for long-term production sustainability.

Q: Can I use TLC25L2CD as a substitute for high-speed applications?

A: The TLC25L2CD is not suitable for high-speed applications. It features a slew rate of 2.9V/µs and gain bandwidth product of 110 kHz, significantly lower than the TS272CD (5.5V/µs and 3.5 MHz). This device is optimized for low-power, low-frequency applications and should be selected only when bandwidth requirements are below 110 kHz.

Q: What packaging format should I specify for production orders?

A: For high-volume production, specify Tape & Reel (TR) packaging variants (CDR, IDR suffixes) to ensure automated assembly compatibility and cost efficiency. For prototype development or low-volume applications, Tube packaging (CD, ID suffixes) is acceptable. Verify your assembly equipment specifications before finalizing packaging selection.

Q: Are there any supply voltage compatibility issues between TS272CD and its substitutes?

A: The TS272CD operates from 3V to 16V. Most substitute parts (TLC252 series, TLC25L2 series) operate from 1.4V to 16V, providing broader low-voltage compatibility. However, TLC1078ID and TLC1078IDR specify a minimum supply voltage of 3V, matching the TS272CD requirement. Verify your application's supply voltage range against the selected substitute's specifications.

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