TS27L2IN Equivalent & Substitute Parts

Part Overview

The TS27L2IN is a CMOS amplifier integrated circuit manufactured by STMicroelectronics, configured as a 2-circuit operational amplifier in an 8-Mini DIP package. This device is classified as obsolete, indicating discontinuation from active production. The TS27L2IN operates across a wide supply voltage range of 3V to 16V and maintains performance across industrial temperature ranges from -40°C to 125°C. Due to its obsolete status, equivalent substitute parts from active manufacturers are necessary for new designs and ongoing production requirements. Substitute devices must maintain functional compatibility through matching package configuration, circuit count, amplifier type, and critical electrical parameters.

Key Parameters

Parameter	TS27L2IN Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	2	—
Package / Case	8-DIP (0.300", 7.62mm)	—
Mounting Type	Through Hole	—
Slew Rate	0.04	V/µs
Gain Bandwidth Product	100	kHz
Current - Input Bias	1	pA
Voltage - Input Offset	1.1	mV
Current - Supply	10	µA (x2 Channels)
Current - Output / Channel	45	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	16	V
Operating Temperature	-40 to 125	°C
RoHS Status	ROHS3 Compliant	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution of the TS27L2IN requires matching the following critical parameters: CMOS amplifier type, 2-circuit configuration, 8-DIP through-hole package, supply voltage range compatibility (minimum 3V, maximum 16V), and operating temperature range. The TS27L2IN exhibits low input bias current (1 pA), moderate slew rate (0.04 V/µs), and low gain bandwidth product (100 kHz), characteristic of low-power CMOS amplifier designs.

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

Category 1: Low-Speed CMOS Amplifiers (Slew Rate ≤ 0.032 V/µs, GBW ≤ 110 kHz) These devices maintain electrical characteristics closely aligned with the TS27L2IN's low-speed operation. Parts in this category include TLC1078CP and TLC1078IP, which provide equivalent slew rate and gain bandwidth product specifications.

Category 2: Higher-Performance CMOS Amplifiers (Slew Rate ≥ 2.9 V/µs, GBW ≥ 1.7 MHz) These devices offer enhanced performance characteristics while maintaining CMOS technology, 2-circuit configuration, and 8-DIP packaging. Parts in this category include TLC252BCP, TLC25L2BCP, TLC25L2CP, TLC25M2ACP, TLC25M2CP, TLC272ACP, and TLC272AIP. These substitutes provide higher slew rates and gain bandwidth products, suitable for applications requiring improved frequency response.

All substitute parts maintain ROHS3 compliance, through-hole mounting in 8-DIP packages, and supply voltage range compatibility with the original device.

Parameter Comparison

Parameter	TS27L2IN	LM2904P	TLC1078CP	TLC1078IP	TLC252BCP	TLC25L2BCP	TLC25L2CP	TLC25M2ACP	TLC25M2CP	TLC272ACP	TLC272AIP
Amplifier Type	CMOS	General Purpose	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
Number of Circuits	2	2	2	2	2	2	2	2	2	2	2
Package / Case	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Slew Rate (V/µs)	0.04	0.3	0.032	0.032	2.9	2.9	2.9	2.9	2.9	5.3	5.3
Gain Bandwidth Product (kHz)	100	700	110	110	2200	110	110	1700	1700	2200	2200
Current - Input Bias (pA)	1	20	1	1	0.6	0.7	0.7	0.7	0.7	0.7	0.7
Voltage - Input Offset (mV)	1.1	3	0.18	0.18	0.29	0.235	1.1	0.9	1.1	0.9	0.9
Current - Supply (µA, x2 Channels)	10	500	29	29	1900	29	29	285	285	1900	1400
Current - Output / Channel (mA)	45	40	30	30	—	30	30	—	—	30	30
Voltage - Supply Span Min (V)	3	3	1.4	3	1.4	1.4	1.4	1.4	1.4	3	4
Voltage - Supply Span Max (V)	16	26	16	16	16	16	16	16	16	16	16
Operating Temperature (°C)	-40 to 125	-40 to 125	0 to 70	-40 to 85	0 to 70	0 to 70	0 to 70	0 to 70	0 to 70	0 to 70	-40 to 85
Product Status	Obsolete	Active	Active	Active	Last Time Buy	Last Time Buy	Last Time Buy	Last Time Buy	Last Time Buy	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Functional Replacement with Matched Performance Characteristics:

TLC1078IP is the optimal substitute when operating temperature range of -40°C to 85°C is acceptable. This device maintains CMOS amplifier type, 2-circuit configuration, 8-DIP package, and supply voltage range compatibility. The TLC1078IP exhibits slew rate (0.032 V/µs) and gain bandwidth product (110 kHz) closely aligned with the TS27L2IN, with input bias current of 1 pA matching the original specification. Product status is Active, ensuring long-term availability.

For Applications Requiring Extended Temperature Range:

TLC272AIP provides Active product status with operating temperature range of -40°C to 85°C. This device maintains CMOS technology, 2-circuit configuration, and 8-DIP packaging. The TLC272AIP offers enhanced performance with slew rate of 5.3 V/µs and gain bandwidth product of 2.2 MHz, suitable for applications requiring higher frequency response while maintaining supply voltage compatibility (4V to 16V minimum).

For Cost-Optimized Substitution with Performance Enhancement:

TLC272ACP is available in Active status with high inventory levels (6700 units). This device provides CMOS amplifier configuration, 2-circuit topology, and 8-DIP package. Operating temperature range is 0°C to 70°C, with supply voltage minimum of 3V matching the TS27L2IN. Slew rate of 5.3 V/µs and gain bandwidth product of 2.2 MHz provide performance enhancement over the original device.

For Low-Speed Applications with Minimal Temperature Requirements:

TLC1078CP operates at 0°C to 70°C with Active product status. This device maintains electrical characteristics closely aligned with the TS27L2IN, including slew rate of 0.032 V/µs and gain bandwidth product of 110 kHz. Supply voltage minimum of 1.4V provides extended low-voltage capability.

All recommended substitutes maintain ROHS3 compliance and through-hole 8-DIP package configuration, ensuring direct pin-compatible replacement in existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Can the TS27L2IN be directly replaced with LM2904P?

A: LM2904P is not a CMOS amplifier; it is classified as a General Purpose amplifier type. While both devices share 2-circuit configuration and 8-DIP packaging, the LM2904P exhibits significantly different electrical characteristics including higher input bias current (20 nA versus 1 pA), higher slew rate (0.3 V/µs versus 0.04 V/µs), and higher gain bandwidth product (700 kHz versus 100 kHz). LM2904P is suitable only for applications where CMOS technology is not required and higher performance is acceptable.

Q: What is the primary difference between TLC1078CP and TLC1078IP?

A: Both devices are CMOS amplifiers with identical electrical specifications including slew rate (0.032 V/µs) and gain bandwidth product (110 kHz). The primary difference is operating temperature range: TLC1078CP operates 0°C to 70°C, while TLC1078IP operates -40°C to 85°C. Selection depends on application temperature requirements. TLC1078IP is preferred for industrial temperature range applications.

Q: Are TLC272ACP and TLC272AIP pin-compatible with TS27L2IN?

A: Yes, both TLC272 variants maintain 8-DIP package configuration with identical pinout. Pin compatibility is confirmed through matching package type (8-DIP, 0.300", 7.62mm) and 2-circuit CMOS amplifier configuration. However, electrical performance differs significantly: TLC272 devices provide slew rate of 5.3 V/µs and gain bandwidth product of 2.2 MHz, substantially higher than the TS27L2IN. Applications must accommodate these performance differences.

Q: What is the significance of "Last Time Buy" product status for TLC252BCP, TLC25L2BCP, TLC25L2CP, TLC25M2ACP, and TLC25M2CP?

A: Last Time Buy status indicates these devices are in final production phases with limited availability. While currently in stock, these parts will not be manufactured after a specified cutoff date. For new designs requiring long-term supply assurance, Active status devices (TLC1078CP, TLC1078IP, TLC272ACP, TLC272AIP) are recommended.

Q: Can TS27L2IN be substituted in applications requiring 26V supply voltage?

A: No. The TS27L2IN maximum supply voltage is 16V. LM2904P supports supply voltage up to 26V, but substitution requires evaluation of CMOS versus General Purpose amplifier type compatibility. For applications requiring supply voltage above 16V, LM2904P is the only listed substitute with extended voltage capability.

Q: What are the output type differences between TLC25L2CP and TLC25M2CP?

A: TLC25L2CP is configured with Single-Ended output type, while TLC25M2CP is configured with Open Drain output type. Both devices maintain identical slew rate (2.9 V/µs), gain bandwidth product (110 kHz for TLC25L2CP, 1.7 MHz for TLC25M2CP), and supply voltage range (1.4V to 16V). Output type selection depends on application circuit requirements for signal coupling and load driving characteristics.

Q: Is supply voltage minimum of 1.4V for TLC1078CP compatible with TS27L2IN applications designed for 3V minimum?

A: Yes. The TLC1078CP minimum supply voltage of 1.4V is lower than the TS27L2IN minimum of 3V. Applications designed for 3V minimum operation are fully compatible with TLC1078CP, which operates reliably at 3V and above. The lower minimum voltage specification provides additional design flexibility without compromising compatibility.

Q: What inventory considerations apply to substitute part selection?

A: Current inventory levels vary significantly among substitutes. TLC272AIP (7700 units), TLC272ACP (6700 units), and LM2904P (10300 units) maintain highest inventory levels, supporting immediate availability for production requirements. TLC1078CP (923 units) and TLC25L2CP (1900 units) have lower inventory. For long-term production planning, Active status devices with higher inventory are preferred over Last Time Buy devices with limited stock.

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