TS27L4AIPT Equivalent & Substitute Parts

Part Overview

The TS27L4AIPT 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 a linear amplifier with active product status and is RoHS3 compliant. The TS27L4AIPT serves applications requiring low-power CMOS amplification with extended temperature range operation from -40°C to 125°C.

Substitute parts are necessary when the TS27L4AIPT becomes unavailable due to supply constraints, when alternative packaging formats are required, or when design requirements necessitate different electrical performance characteristics within compatible package specifications.

Key Parameters

Parameter	Value
Manufacturer Part Number	TS27L4AIPT
Manufacturer	STMicroelectronics
Category	Linear, Amplifiers
Amplifier Type	CMOS
Number of Circuits	4
Package / Case	14-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
Slew Rate	0.04 V/µs
Gain Bandwidth Product	100 kHz
Current - Input Bias	1 pA
Voltage - Input Offset	900 µV
Current - Supply	10 µA (x4 Channels)
Current - Output / Channel	45 mA
Voltage - Supply Span (Min)	3 V
Voltage - Supply Span (Max)	16 V
Operating Temperature	-40°C ~ 125°C
Product Status	Active
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution compatibility for the TS27L4AIPT is determined by the following critical parameters:

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

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

Supply Voltage Range: The TS27L4AIPT operates across 3V to 16V. Substitute parts with minimum supply voltage of 3V or 4V and maximum of 16V are compatible, though parts with 4V minimum supply may require design verification for 3V applications.

Temperature Range: The TS27L4AIPT operates from -40°C to 125°C. Substitute parts with operating ranges of -40°C to 85°C or 0°C to 70°C may have restricted application scope depending on end-use requirements.

Amplifier Type: CMOS amplifiers (TS27L4AIPT, TLC27L4CPWR, TLC27L4IPWR) and General Purpose amplifiers (TLC274 series, TLC27M4 series) represent distinct functional categories. CMOS types prioritize ultra-low input bias current and supply current. General Purpose types offer higher slew rate and gain bandwidth product.

Electrical Performance: Slew rate, gain bandwidth product, input bias current, and input offset voltage vary across substitute options. Selection depends on specific circuit performance requirements.

Parameter Comparison

Parameter	TS27L4AIPT	TLC27L4CPWR	TLC27L4IPWR	TLC27M4IPW	TLC27M4IPWR	TLC274CPW	TLC274IPW	TLC274IPWR	TLC274CPWR
Manufacturer	STMicroelectronics	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Amplifier Type	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
Package / Case	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Slew Rate	0.04 V/µs	0.05 V/µs	0.05 V/µs	0.62 V/µs	0.62 V/µs	3.6 V/µs	3.6 V/µs	3.6 V/µs	3.6 V/µs
Gain Bandwidth Product	100 kHz	110 kHz	110 kHz	525 kHz	525 kHz	2.2 MHz	2.2 MHz	2.2 MHz	2.2 MHz
Current - Input Bias	1 pA	0.7 pA	0.7 pA	0.7 pA	0.7 pA	0.6 pA	0.6 pA	0.6 pA	0.6 pA
Voltage - Input Offset	900 µV	1.1 mV	1.1 mV	1.1 mV	1.1 mV	1.1 mV	1.1 mV	1.1 mV	1.1 mV
Current - Supply	10 µA (x4)	57 µA (x4)	57 µA (x4)	570 µA (x4)	570 µA (x4)	2.7 mA (x4)	2.7 mA (x4)	2.7 mA (x4)	2.7 mA (x4)
Current - Output / Channel	45 mA	30 mA	30 mA	30 mA	30 mA	30 mA	30 mA	30 mA	30 mA
Voltage - Supply Span (Min)	3 V	3 V	4 V	4 V	4 V	3 V	4 V	4 V	3 V
Voltage - Supply Span (Max)	16 V	16 V	16 V	16 V	16 V	16 V	16 V	16 V	16 V
Operating Temperature	-40°C ~ 125°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C
Product Status	Active	Last Time Buy	Active	Last Time Buy	Active	Obsolete	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (CMOS Amplifier Category):

TLC27L4IPWR and TLC27L4CPWR are the closest functional equivalents to the TS27L4AIPT. Both are CMOS amplifiers with 4 circuits in 14-TSSOP packaging. TLC27L4IPWR is recommended as the primary substitute due to its Active product status and extended temperature range (-40°C to 85°C), which overlaps the TS27L4AIPT operating range. TLC27L4IPWR is available in Tape & Reel packaging with 16,875 units in stock. The TLC27L4CPWR variant is available in Tape & Reel with 6,787 units in stock and maintains Active status, though its operating temperature range is limited to 0°C to 70°C.

Secondary Substitutes (General Purpose Amplifier Category):

TLC274IPWR and TLC27M4IPWR represent higher-performance alternatives with increased slew rate and gain bandwidth product. TLC274IPWR offers 3.6 V/µs slew rate and 2.2 MHz gain bandwidth product with Active product status and -40°C to 85°C temperature range. TLC27M4IPWR provides 0.62 V/µs slew rate and 525 kHz gain bandwidth product, also with Active status and -40°C to 85°C range. These parts are suitable for applications requiring faster signal processing than the TS27L4AIPT baseline performance.

Obsolete Parts to Avoid:

TLC274CPW and TLC274IPW carry Obsolete product status and should not be selected for new designs. These parts present long-term supply risk and limited availability.

Last Time Buy Parts:

TLC27L4CPW and TLC27M4IPW are designated Last Time Buy. While currently available, these parts have restricted procurement windows and should be avoided for applications requiring sustained component availability.

Compliance Considerations:

All substitute parts listed are RoHS3 compliant and REACH unaffected, matching the TS27L4AIPT compliance profile. All parts carry MSL 1 (Unlimited) moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can TLC274IPWR replace TS27L4AIPT in all applications?

A: TLC274IPWR is electrically compatible in terms of package, pin count, and supply voltage range. However, TLC274IPWR is a General Purpose amplifier with significantly higher slew rate (3.6 V/µs vs. 0.04 V/µs) and gain bandwidth product (2.2 MHz vs. 100 kHz). Applications sensitive to these performance differences require circuit re-evaluation. TLC274IPWR is suitable for applications requiring faster response characteristics.

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

A: CMOS amplifiers (TS27L4AIPT, TLC27L4 series) prioritize ultra-low input bias current (0.7-1 pA) and minimal supply current consumption (10-57 µA per 4 channels). General Purpose amplifiers (TLC274, TLC27M4 series) offer higher slew rate and gain bandwidth product at the cost of increased supply current (2.7-570 µA per 4 channels). CMOS types are preferred for battery-powered or low-power applications; General Purpose types suit signal processing applications requiring higher bandwidth.

Q: Are TLC27L4CPWR and TLC27L4IPWR interchangeable?

A: Both are CMOS amplifiers with identical electrical specifications. The primary difference is operating temperature range: TLC27L4CPWR operates 0°C to 70°C, while TLC27L4IPWR operates -40°C to 85°C. For applications within the 0°C to 70°C window, both are functionally equivalent. For extended temperature applications, TLC27L4IPWR is required.

Q: What packaging formats are available for CMOS substitutes?

A: TLC27L4CPWR is available in Tube packaging. TLC27L4IPWR is available in Tape & Reel (TR) packaging. Both use identical 14-TSSOP surface mount package. Tape & Reel format is standard for automated assembly; Tube format is used for manual assembly or lower-volume applications.

Q: Why does TS27L4AIPT have higher output current (45 mA) than substitute parts (30 mA)?

A: Output current capability is a specified electrical characteristic that varies by device design. The TS27L4AIPT specification of 45 mA per channel exceeds substitute parts at 30 mA per channel. Applications requiring output currents above 30 mA must retain the TS27L4AIPT or verify that substitute parts meet actual circuit current requirements.

Q: Can I use TLC274CPWR or TLC274IPW for new designs?

A: TLC274CPW and TLC274IPW carry Obsolete product status. These parts should not be used for new designs due to supply discontinuation risk and limited availability. Active alternatives include TLC274IPWR and TLC274CPWR.

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

A: Last Time Buy indicates the manufacturer has announced end-of-life for the product. Existing inventory is available for a limited period, after which the part becomes unavailable. TLC27L4CPW and TLC27M4IPW carry this designation. For sustained production, Active-status alternatives are required.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (TS27L4AIPT, TLC27L4 series, TLC274 series, TLC27M4 series) are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, ensuring environmental and regulatory compatibility.

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