TS27L4ACPT Equivalent & Substitute Parts

Part Overview

The TS27L4ACPT is a CMOS amplifier integrated circuit manufactured by STMicroelectronics, configured as a 4-circuit operational amplifier in a 14-TSSOP surface mount package. This device is classified as Active product status and is ROHS3 compliant. The TS27L4ACPT operates across a supply voltage range of 3V to 16V with an operating temperature range of 0°C to 70°C, making it suitable for low-power analog signal processing applications requiring minimal input bias current and low supply current consumption.

Substitute parts are necessary when the TS27L4ACPT becomes unavailable due to supply constraints, when alternative packaging formats are required, or when extended operating temperature ranges or enhanced performance characteristics are needed for specific application requirements.

Key Parameters

Parameter	TS27L4ACPT Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	4	—
Package / Case	14-TSSOP (0.173", 4.40mm Width)	—
Slew Rate	0.04	V/µs
Gain Bandwidth Product	100	kHz
Current - Input Bias	1	pA
Voltage - Input Offset	900	µV
Current - Supply (x4 Channels)	10	µA
Current - Output / Channel	45	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	16	V
Operating Temperature	0°C ~ 70°C	—
Mounting Type	Surface Mount	—
Product Status	Active	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TS27L4ACPT is determined by compatibility across the following critical parameters:

Package Compatibility: All substitute parts must use the 14-TSSOP surface mount package with identical 0.173" (4.40mm) width to ensure mechanical and electrical compatibility with existing PCB layouts.

Circuit Configuration: All substitute parts must provide 4 operational amplifier circuits to maintain functional equivalence in multi-channel applications.

Supply Voltage Range: Substitute parts must support the minimum 3V supply voltage requirement of the TS27L4ACPT. Parts with extended minimum supply voltage (4V) remain compatible for applications operating above 4V.

Amplifier Type Classification: The TS27L4ACPT is a CMOS amplifier. Substitute parts are grouped into two categories: CMOS amplifiers (TLC27L4 series and TLC27M4 series) and General Purpose amplifiers (TLC274 series). CMOS variants maintain the low input bias current and low supply current characteristics of the original device.

Operating Temperature Range: The TS27L4ACPT operates from 0°C to 70°C. Substitute parts with extended temperature ranges (-40°C to 85°C) provide broader operational capability while remaining backward compatible.

Compliance and Certifications: All substitute parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 rating, ensuring regulatory and environmental compatibility.

Parameter Comparison

Parameter	TS27L4ACPT	TLC27L4CPWR	TLC27L4IPWR	TLC27L4CPW	TLC27M4IPWR	TLC27M4IPW	TLC274CPWR	TLC274IPWR	TLC274CPW	TLC274IPW
Manufacturer	STMicroelectronics	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Amplifier Type	CMOS	CMOS	CMOS	CMOS	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	4	4	4	4	4	4	4	4	4	4
Package / Case	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP
Slew Rate (V/µs)	0.04	0.05	0.05	0.05	0.62	0.62	3.6	3.6	3.6	3.6
Gain Bandwidth Product (kHz)	100	110	110	110	525	525	2200	2200	2200	2200
Current - Input Bias (pA)	1	0.7	0.7	0.7	0.7	0.7	0.6	0.6	0.6	0.6
Voltage - Input Offset (mV)	0.9	1.1	1.1	1.1	1.1	1.1	1.1	1.1	1.1	1.1
Current - Supply (µA, x4 Channels)	10	57	57	57	570	570	2700	2700	2700	2700
Current - Output / Channel (mA)	45	30	30	30	30	30	30	30	30	30
Voltage - Supply Span (Min)	3 V	3 V	4 V	3 V	4 V	4 V	3 V	4 V	3 V	4 V
Voltage - Supply Span (Max)	16 V	16 V	16 V	16 V	16 V	16 V	16 V	16 V	16 V	16 V
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Packaging Format	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tube	Tape & Reel (TR)	Tube	Cut Tape & Digi-Reel	Cut Tape & Digi-Reel	Tube	Tube
Product Status	Active	Active	Active	Last Time Buy	Active	Last Time Buy	Active	Active	Obsolete	Obsolete
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitutes (CMOS Amplifier Category):

The TLC27L4CPWR and TLC27L4IPWR from Texas Instruments represent the closest functional equivalents to the TS27L4ACPT. Both devices maintain CMOS amplifier architecture with 4-circuit configuration in 14-TSSOP packaging. The TLC27L4CPWR is Active product status with Tape & Reel packaging, matching the original device's packaging format. The TLC27L4IPWR extends the operating temperature range to -40°C to 85°C while maintaining Active product status, providing enhanced thermal capability for demanding applications. Both parts maintain supply voltage compatibility from 3V minimum and deliver equivalent low input bias current and low supply current characteristics essential for battery-powered and low-power applications.

Secondary Substitutes (Enhanced Performance CMOS Category):

The TLC27M4IPWR provides enhanced slew rate (0.62V/µs versus 0.04V/µs) and increased gain bandwidth product (525 kHz versus 100 kHz) while maintaining CMOS architecture and 4-circuit configuration. This device is Active product status with extended operating temperature range (-40°C to 85°C) and Tape & Reel packaging. The TLC27M4IPWR is suitable for applications requiring faster signal processing while preserving low input bias current characteristics. The TLC27L4CPW remains available as a Last Time Buy option with identical electrical characteristics to TLC27L4CPWR but in Tube packaging format.

Alternative Substitutes (General Purpose Amplifier Category):

The TLC274CPWR and TLC274IPWR from Texas Instruments provide general purpose amplifier functionality with significantly enhanced performance characteristics. These devices deliver higher slew rate (3.6V/µs) and substantially higher gain bandwidth product (2.2 MHz), making them suitable for applications requiring faster transient response and wider bandwidth. The TLC274CPWR is Active product status with Cut Tape & Digi-Reel packaging, while TLC274IPWR is Active product status with extended operating temperature range (-40°C to 85°C). Both maintain 4-circuit configuration in 14-TSSOP packaging and support 3V to 16V supply voltage range. The TLC274CPW and TLC274IPW are available as Obsolete or Last Time Buy options and should be avoided for new designs.

Compliance and Regulatory Considerations:

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 rating, ensuring full regulatory and environmental compatibility with the TS27L4ACPT. No additional compliance verification is required when substituting between these parts.

Packaging Format Selection:

For applications requiring Tape & Reel packaging (automated assembly), select TLC27L4CPWR, TLC27L4IPWR, TLC27M4IPWR, TLC274CPWR, or TLC274IPWR. For manual assembly or lower-volume applications, Tube packaging options (TLC27L4CPW, TLC27M4IPW, TLC274CPW, TLC274IPW) are available, though some are Last Time Buy or Obsolete status.

Frequently Asked Questions (FAQ)

Q: Can the TLC274CPWR directly replace the TS27L4ACPT in my circuit?

A: The TLC274CPWR is mechanically and electrically compatible with the TS27L4ACPT, sharing identical 14-TSSOP packaging, 4-circuit configuration, and 3V to 16V supply voltage range. However, the TLC274CPWR exhibits significantly higher slew rate (3.6V/µs versus 0.04V/µs) and gain bandwidth product (2.2 MHz versus 100 kHz). This enhanced performance may affect circuit behavior in applications sensitive to frequency response or transient characteristics. Verification of circuit performance is necessary when substituting between amplifier types with different bandwidth characteristics.

Q: What is the difference between TLC27L4CPWR and TLC27L4IPWR?

A: Both devices are CMOS amplifiers with identical electrical characteristics and 4-circuit configuration in 14-TSSOP packaging. The primary difference is operating temperature range: TLC27L4CPWR operates from 0°C to 70°C, while TLC27L4IPWR operates from -40°C to 85°C. The TLC27L4IPWR also requires minimum 4V supply voltage compared to 3V for TLC27L4CPWR. Select TLC27L4IPWR for applications requiring extended temperature operation or when 4V minimum supply voltage is acceptable.

Q: Why does the TS27L4ACPT have lower supply current than the TLC274 series?

A: The TS27L4ACPT is a CMOS amplifier with 10µA total supply current (x4 channels), while the TLC274 series are general purpose amplifiers with 2700µA total supply current (x4 channels). CMOS architecture inherently consumes less power than general purpose amplifier designs. The TLC27L4 and TLC27M4 series maintain CMOS architecture with supply currents of 57µA and 570µA respectively, providing intermediate power consumption options.

Q: Is the TLC27M4IPWR suitable for my low-power application?

A: The TLC27M4IPWR consumes 570µA total supply current (x4 channels), which is 57 times higher than the TS27L4ACPT (10µA). While the TLC27M4IPWR maintains CMOS architecture and low input bias current, it is not recommended for applications where minimizing power consumption is critical. The TLC27L4CPWR or TLC27L4IPWR are more appropriate for low-power applications, with supply current of 57µA (x4 channels).

Q: Can I use a Last Time Buy part like TLC27L4CPW for a new design?

A: Last Time Buy parts have limited remaining inventory and will not be replenished. While TLC27L4CPW is functionally equivalent to the TS27L4ACPT, it is not recommended for new designs. Select Active product status parts such as TLC27L4CPWR or TLC27L4IPWR to ensure long-term availability and supply chain continuity.

Q: What packaging format should I select for high-volume production?

A: For high-volume automated assembly, select parts with Tape & Reel (TR) or Cut Tape & Digi-Reel packaging. The TLC27L4CPWR, TLC27L4IPWR, TLC27M4IPWR, TLC274CPWR, and TLC274IPWR all provide Tape & Reel or Cut Tape & Digi-Reel formats suitable for automated pick-and-place equipment. Tube packaging is appropriate for manual assembly or lower-volume applications.

Q: Are all substitute parts pin-compatible with the TS27L4ACPT?

A: All substitute parts use the 14-TSSOP package with identical pin configuration and spacing (0.173" width, 4.40mm). Pin compatibility is confirmed across all listed substitute parts. No PCB layout modifications are required when substituting between these devices.

Q: What is the difference between CMOS and General Purpose amplifier types?

A: CMOS amplifiers (TS27L4ACPT, TLC27L4 series) feature extremely low input bias current (0.7 to 1 pA) and low supply current consumption, making them ideal for high-impedance input applications and battery-powered systems. General Purpose amplifiers (TLC274 series) provide higher slew rate and gain bandwidth product for applications requiring faster signal processing, but consume significantly more supply current. The TLC27M4 series provides intermediate performance between CMOS and general purpose categories.

Q: Can I substitute the TS27L4ACPT with a part requiring 4V minimum supply voltage?

A: The TS27L4ACPT operates from 3V minimum supply voltage. Substitute parts with 4V minimum supply voltage (TLC27L4IPWR, TLC27M4IPWR, TLC274IPWR, TLC274IPW) are compatible only for applications where the supply voltage remains at or above 4V. For applications operating below 4V, select substitute parts with 3V minimum supply voltage (TLC27L4CPWR, TLC27L4CPW, TLC274CPWR, TLC274CPW).

Q: What is the significance of the input offset voltage difference between parts?

A: The TS27L4ACPT has input offset voltage of 900µV, while most substitute parts specify 1.1mV. This 200µV difference is negligible for most applications and does not affect functional compatibility. Applications requiring precise offset voltage matching should verify specific device datasheets for temperature coefficient and long-term drift characteristics.

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