TS27L4CPT CMOS Amplifier 4 Circuit 14-TSSOP Equivalent & Substitute Parts

Part Overview

The TS27L4CPT 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 with full RoHS3 compliance and unlimited moisture sensitivity rating. The TS27L4CPT is suitable for low-power analog signal processing applications requiring minimal input bias current and low supply current consumption across a 3V to 16V supply range.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required, or when design specifications permit operation with different performance characteristics within the same functional category and package footprint.

Key Parameters

Parameter	TS27L4CPT 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	1.1	mV
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	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TS27L4CPT 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 to ensure mechanical and electrical compatibility with existing PCB layouts.

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

Supply Voltage Range: The TS27L4CPT operates across 3V to 16V. Substitute parts with identical or extended supply voltage ranges (minimum 3V, maximum 16V or greater) are compatible.

Operating Temperature Range: The TS27L4CPT operates from 0°C to 70°C. Substitute parts with identical or extended temperature ranges are acceptable.

Amplifier Type Classification: Substitute parts are grouped into two categories: CMOS amplifiers (direct functional equivalents) and General Purpose amplifiers (alternative topology with different performance characteristics but compatible pinout and package).

Compliance Requirements: All substitute parts must maintain RoHS3 compliance and MSL 1 rating to ensure regulatory and environmental compatibility.

The following substitute parts are organized by amplifier type and product status:

CMOS Amplifier Substitutes (Direct Type Match):

TLC27L4CPWR (Texas Instruments, Active, Tape & Reel)
TLC27L4CPW (Texas Instruments, Last Time Buy, Tube)
TLC27L4IPWR (Texas Instruments, Active, Tape & Reel)

General Purpose Amplifier Substitutes (Alternative Type):

TLC274CPWR (Texas Instruments, Active, Cut Tape & Digi-Reel)
TLC274CPW (Texas Instruments, Obsolete, Tube)
TLC274IPW (Texas Instruments, Obsolete, Tube)
TLC274IPWR (Texas Instruments, Active, Cut Tape & Digi-Reel)
TLC27M4IPW (Texas Instruments, Last Time Buy, Tube)
TLC27M4IPWR (Texas Instruments, Active, Tape & Reel)

Parameter Comparison

Parameter	TS27L4CPT	TLC27L4CPWR	TLC27L4CPW	TLC27L4IPWR	TLC274CPWR	TLC274CPW	TLC274IPW	TLC274IPWR	TLC27M4IPW	TLC27M4IPWR
Manufacturer	STMicroelectronics	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
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
Amplifier Type	CMOS	CMOS	CMOS	CMOS	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Slew Rate (V/µs)	0.04	0.05	0.05	0.05	3.6	3.6	3.6	3.6	0.62	0.62
Gain Bandwidth Product (kHz)	100	110	110	110	2200	2200	2200	2200	525	525
Current - Input Bias (pA)	1	0.7	0.7	0.7	0.6	0.6	0.6	0.6	0.7	0.7
Voltage - Input Offset (mV)	1.1	1.1	1.1	1.1	1.1	1.1	1.1	1.1	1.1	1.1
Current - Supply x4 Channels (µA)	10	57	57	57	2.7	2.7	2.7	2.7	570	570
Current - Output / Channel (mA)	45	30	30	30	30	30	30	30	30	30
Voltage - Supply Span Min (V)	3	3	3	4	3	3	4	4	4	4
Voltage - Supply Span Max (V)	16	16	16	16	16	16	16	16	16	16
Operating Temperature (°C)	0 ~ 70	0 ~ 70	0 ~ 70	-40 ~ 85	0 ~ 70	0 ~ 70	-40 ~ 85	-40 ~ 85	-40 ~ 85	-40 ~ 85
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Active	Active	Last Time Buy	Active	Active	Obsolete	Obsolete	Active	Last Time Buy	Active
Packaging Format	Tape & Reel (TR)	Tape & Reel (TR)	Tube	Tape & Reel (TR)	Cut Tape & Digi-Reel	Tube	Tube	Cut Tape & Digi-Reel	Tube	Tape & Reel (TR)
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 Type, Active Status):

TLC27L4CPWR and TLC27L4IPWR are the preferred substitutes for the TS27L4CPT. Both are manufactured by Texas Instruments, maintain CMOS amplifier classification, and carry Active product status. TLC27L4CPWR is available in Tape & Reel packaging identical to the TS27L4CPT and operates within the 0°C to 70°C temperature range. TLC27L4IPWR extends the operating temperature range to -40°C to 85°C and requires a minimum supply voltage of 4V (compared to 3V for the TS27L4CPT). Both parts demonstrate electrical performance characteristics within acceptable tolerance of the TS27L4CPT, with marginally higher slew rate (0.05V/µs versus 0.04V/µs) and gain bandwidth product (110 kHz versus 100 kHz).

Secondary Substitutes (CMOS Type, Last Time Buy Status):

TLC27L4CPW is classified as Last Time Buy, indicating limited future availability. This part is suitable for applications where the 0°C to 70°C operating temperature range and 3V minimum supply voltage are required, but procurement should prioritize Active status alternatives.

Alternative Substitutes (General Purpose Type, Active Status):

TLC274CPWR and TLC274IPWR are General Purpose amplifiers with significantly higher performance characteristics. These parts are suitable for applications requiring higher slew rate (3.6V/µs) and gain bandwidth product (2.2 MHz). TLC274CPWR operates within 0°C to 70°C temperature range with 3V minimum supply voltage. TLC274IPWR extends temperature range to -40°C to 85°C with 4V minimum supply voltage. Both parts exhibit lower supply current consumption (2.7µA total versus 10µA for TS27L4CPT), making them advantageous for battery-powered applications.

Avoid (Obsolete Status):

TLC274CPW and TLC274IPW carry Obsolete product status and should not be selected for new designs or long-term production applications.

Avoid (Last Time Buy Status for New Designs):

TLC27M4IPW carries Last Time Buy status. While this part offers intermediate performance (0.62V/µs slew rate, 525 kHz gain bandwidth product), it is not recommended for new designs due to limited future availability.

Compliance Verification:

All substitute parts maintain RoHS3 compliance and MSL 1 (Unlimited) rating, ensuring regulatory and environmental compatibility with the TS27L4CPT across all applications.

Frequently Asked Questions (FAQ)

Q: Can I use TLC274CPWR as a direct replacement for TS27L4CPT in my existing design?

A: TLC274CPWR is mechanically and electrically compatible with TS27L4CPT in the 14-TSSOP package. However, TLC274CPWR is a General Purpose amplifier with significantly different performance characteristics. The slew rate is 90 times higher (3.6V/µs versus 0.04V/µs), and the gain bandwidth product is 22 times higher (2.2 MHz versus 100 kHz). If your circuit design relies on the low-speed characteristics of the TS27L4CPT, substitution with TLC274CPWR may introduce instability or oscillation. Verify circuit performance through simulation or testing before implementation.

Q: What is the difference between Tape & Reel and Tube packaging?

A: Tape & Reel (TR) packaging is used for automated assembly processes and high-volume production. Tube packaging is used for manual assembly or lower-volume applications. Both formats contain identical electronic components. The TS27L4CPT is supplied in Tape & Reel format. TLC27L4CPWR is also available in Tape & Reel, making it the most compatible packaging substitute. If Tube packaging is required, TLC27L4CPW is available in Tube format.

Q: Why does TLC27L4IPWR require a minimum 4V supply voltage while TS27L4CPT operates at 3V minimum?

A: TLC27L4IPWR is specified for the industrial temperature range (-40°C to 85°C), while TS27L4CPT is specified for the commercial temperature range (0°C to 70°C). The extended temperature range requires different internal circuit design and biasing, resulting in a higher minimum supply voltage specification. If your application requires 3V minimum supply operation, select TLC27L4CPWR instead.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this document carry RoHS3 compliance certification, ensuring compatibility with regulatory requirements and environmental standards applicable to the TS27L4CPT.

Q: What does "Last Time Buy" product status mean?

A: Last Time Buy indicates that the manufacturer has announced end-of-life for the product. Existing inventory may be available for purchase, but no new production will occur after a specified date. Parts with Last Time Buy status should not be selected for new designs or applications requiring long-term component availability. Active status parts are recommended for new designs.

Q: Can I substitute TS27L4CPT with TLC27M4IPWR?

A: TLC27M4IPWR is mechanically compatible in the 14-TSSOP package and carries Active product status. However, it is a General Purpose amplifier with intermediate performance characteristics (0.62V/µs slew rate, 525 kHz gain bandwidth product) positioned between the low-speed TS27L4CPT and the high-speed TLC274 series. Substitution is possible only if circuit design permits the higher performance characteristics. Verify stability and functionality before implementation.

Q: What is the significance of the 1 pA input bias current specification on TS27L4CPT?

A: The 1 pA input bias current is characteristic of CMOS amplifier technology and indicates extremely low input current draw. This specification is important for high-impedance signal sources and precision measurement applications. All CMOS substitute parts (TLC27L4 series) maintain input bias current specifications below 1 pA. General Purpose substitutes (TLC274 and TLC27M4 series) also maintain sub-picoampere input bias current, ensuring compatibility with high-impedance applications.

Q: Is the TS27L4CPT still in production?

A: Yes. The TS27L4CPT carries Active product status, indicating current production and availability. However, TLC27L4CPWR and TLC27L4IPWR are also in Active production and offer equivalent CMOS amplifier functionality with improved availability from Texas Instruments distribution channels.

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