TS272ID Equivalent & Substitute Parts

Part Overview

The TS272ID 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 TS272ID delivers a gain bandwidth product of 3.5 MHz with a slew rate of 5.5 V/µs, making it suitable for general-purpose analog signal conditioning applications requiring low input bias current and moderate bandwidth performance.

Due to its obsolete status, locating replacement units becomes increasingly difficult. Equivalent and substitute parts provide viable alternatives that maintain functional compatibility while offering improved availability or enhanced performance characteristics within the same package form factor.

Key Parameters

Parameter	TS272ID Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	2	—
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
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 (x2 Channels)	1	mA
Current - Output / Channel	45	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	16	V
Operating Temperature	-40 to 125	°C
Mounting Type	Surface Mount	—
Product Status	Obsolete	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution compatibility for the TS272ID is determined by the following critical parameters:

Primary Compatibility Criteria:

Package form factor: 8-SOIC (0.154", 3.90mm Width) — ensures mechanical and electrical pin compatibility
Number of circuits: 2 — maintains dual-channel functionality
Amplifier type: CMOS — preserves input impedance and bias current characteristics
Supply voltage range: Minimum 3 V to maximum 16 V — ensures operation within specified power rails
Operating temperature range: -40°C to 125°C — maintains thermal performance envelope

Secondary Performance Criteria:

Gain bandwidth product: 3.5 MHz or higher — ensures signal bandwidth capability
Slew rate: 5.5 V/µs or higher — maintains transient response performance
Output current per channel: 45 mA or higher — preserves load driving capability
Input bias current: 1 pA or lower — maintains low-impedance source compatibility
Input offset voltage: 1.1 mV or lower — ensures DC accuracy

Substitute parts are grouped into two categories based on these criteria:

Category A: Direct CMOS Substitutes — Parts maintaining CMOS amplifier topology with comparable or superior performance metrics across all key parameters.

Category B: General-Purpose Substitutes — Parts offering functional compatibility through equivalent package, pin count, and supply voltage range, with performance trade-offs in specific parameters.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (mV)	Supply Current (mA)	Output Current (mA)	Temp Range (°C)	Product Status
TS272ID	STMicroelectronics	CMOS	5.5	3.5	1	1.1	1	45	-40 to 125	Obsolete
TLC252CDR	Texas Instruments	CMOS	2.9	2.2	0.6	1.1	1.9	—	0 to 70	Active
TLC252CD	Texas Instruments	CMOS	2.9	2.2	0.6	1.1	1.9	—	0 to 70	Last Time Buy
TLC252ACD	Texas Instruments	CMOS	2.9	2.2	1	0.9	1.9	—	0 to 70	Last Time Buy
TLC1078IDR	Texas Instruments	CMOS	0.032	0.11	1	0.18	0.029	30	-40 to 85	Active
TLC1078ID	Texas Instruments	CMOS	0.032	0.11	1	0.18	0.029	30	-40 to 85	Active
TLC1078CDR	Texas Instruments	CMOS	0.032	0.11	1	0.18	0.029	30	0 to 70	Active
TLC1078CD	Texas Instruments	CMOS	0.032	0.11	1	0.18	0.029	30	0 to 70	Last Time Buy
TLC25L2ACD	Texas Instruments	CMOS	2.9	0.11	50	0.9	0.029	—	0 to 70	Last Time Buy
NCS20072DR2G	onsemi	General Purpose	2.4	3.2	5	1.3	0.42	65	-40 to 125	Active
LM432MA/NOPB	Texas Instruments	General Purpose	—	1	3	0.6	0.15	30	-40 to 85	Obsolete

Engineering Selection Recommendations

For Direct Replacement with Active Product Status:

The NCS20072DR2G (onsemi) provides the most comprehensive compatibility with the TS272ID. This device maintains the 8-SOIC package form factor, dual-channel configuration, and extended operating temperature range (-40°C to 125°C). The NCS20072DR2G delivers superior output current capability (65 mA per channel versus 45 mA), comparable gain bandwidth product (3.2 MHz versus 3.5 MHz), and active product status ensuring long-term availability. The device is ROHS3 compliant and carries REACH unaffected certification, meeting current regulatory requirements.

For CMOS-Specific Applications:

The TLC252CDR (Texas Instruments) offers active product status with CMOS amplifier topology identical to the TS272ID. This part maintains the 8-SOIC package and dual-channel configuration. Performance trade-offs include reduced slew rate (2.9 V/µs versus 5.5 V/µs) and lower gain bandwidth product (2.2 MHz versus 3.5 MHz). The TLC252CDR operates within a narrower temperature range (0°C to 70°C) compared to the TS272ID (-40°C to 125°C), limiting suitability for extended thermal environments.

For Low-Power Applications:

The TLC1078IDR (Texas Instruments) provides active product status with ultra-low supply current (29 µA per channel versus 1 mA). This device is appropriate for battery-powered or energy-constrained systems. Significant performance reduction occurs in slew rate (0.032 V/µs) and gain bandwidth product (110 kHz), making this substitute unsuitable for high-speed signal processing applications.

Compliance and Certification:

All recommended substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring compatibility with current environmental and regulatory standards. The TS272ID, despite obsolete classification, carries identical compliance certifications to active alternatives.

Frequently Asked Questions (FAQ)

Q: Can the NCS20072DR2G directly replace the TS272ID without circuit modification?

A: The NCS20072DR2G is mechanically and electrically compatible with the TS272ID due to identical 8-SOIC package pinout and dual-channel configuration. Both devices operate within the 3 V to 16 V supply range and maintain comparable gain bandwidth performance. No circuit modification is required for basic substitution. However, the NCS20072DR2G operates at higher maximum supply voltage (36 V versus 16 V), requiring verification that existing power supply designs do not exceed 16 V to prevent device damage.

Q: Why do the TLC1078 variants show significantly lower slew rate and bandwidth compared to the TS272ID?

A: The TLC1078 series represents a different product family optimized for ultra-low power consumption (29 µA per channel) rather than high-speed performance. The reduced slew rate (0.032 V/µs) and gain bandwidth product (110 kHz) reflect design trade-offs prioritizing power efficiency. These devices are suitable only for applications where bandwidth requirements are below 110 kHz and power consumption is the primary design constraint.

Q: What is the significance of "Last Time Buy" product status for TLC252 variants?

A: "Last Time Buy" status indicates that the manufacturer has announced discontinuation with a final purchase deadline. Inventory remains available but will eventually deplete. For long-term production requirements, active-status alternatives such as TLC252CDR or NCS20072DR2G are preferred to ensure sustained component availability beyond the Last Time Buy window.

Q: Are there temperature range limitations when substituting the TS272ID with TLC252 devices?

A: Yes. The TLC252 series operates within 0°C to 70°C, while the TS272ID operates from -40°C to 125°C. Applications requiring operation below 0°C or above 70°C cannot use TLC252 substitutes. The NCS20072DR2G and TLC1078IDR maintain the extended -40°C to 125°C range, making them suitable for wide-temperature applications.

Q: How does the input bias current difference between TS272ID (1 pA) and NCS20072DR2G (5 pA) affect circuit design?

A: The 4 pA difference is negligible for most applications. Input bias current primarily affects high-impedance source circuits where bias current flowing through source impedance creates offset voltage. For source impedances below 1 MΩ, the voltage offset contribution remains below 5 µV, typically insignificant compared to the input offset voltage specification (1.1 mV for TS272ID, 1.3 mV for NCS20072DR2G).

Q: Can the LM432MA/NOPB substitute for the TS272ID despite obsolete status?

A: The LM432MA/NOPB shares obsolete classification with the TS272ID, making it unsuitable as a long-term replacement strategy. Additionally, the LM432MA/NOPB exhibits lower gain bandwidth product (1 MHz versus 3.5 MHz) and reduced output current capability (30 mA versus 45 mA). This device should not be considered for new designs or production quantities requiring sustained availability.

Q: What packaging format differences exist among substitute options?

A: All substitute parts maintain the 8-SOIC (0.154", 3.90mm Width) package form factor, ensuring identical PCB footprint compatibility. Packaging variations (Tube, Tape & Reel, Cut Tape) affect supply and handling but do not impact electrical or mechanical compatibility. Selection between packaging formats depends on procurement volume and assembly process requirements rather than functional performance.

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