TLC274ID Equivalent & Substitute Parts

Part Overview

The TLC274ID is a general-purpose operational amplifier integrated circuit manufactured by Texas Instruments, configured as a 4-circuit device in a 14-SOIC surface mount package. This part is classified as obsolete, indicating it is no longer in active production. The TLC274ID operates across a supply voltage range of 4V to 16V with a slew rate of 3.6V/µs and a gain bandwidth product of 2.2 MHz, making it suitable for general-purpose amplification applications requiring moderate bandwidth performance.

Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary for new designs, production continuity, and long-term component availability. The substitute parts listed maintain functional compatibility through matching package configurations, circuit count, and electrical operating parameters within acceptable tolerances.

Key Parameters

Parameter	Value	Unit
Manufacturer	Texas Instruments	—
Part Number	TLC274ID	—
Product Status	Obsolete	—
Category	Linear, Amplifiers	—
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Slew Rate	3.6	V/µs
Gain Bandwidth Product	2.2	MHz
Current - Input Bias	0.6	pA
Voltage - Input Offset	1.1	mV
Current - Supply	2.7	mA (x4 Channels)
Current - Output / Channel	30	mA
Voltage - Supply Span (Min)	4	V
Voltage - Supply Span (Max)	16	V
Operating Temperature	-40 to 85	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TLC274ID is determined by strict adherence to the following electrical and mechanical parameters:

Package Compatibility: All substitute parts must use the 14-SOIC surface mount package with 0.154" (3.90mm) width to ensure direct PCB footprint compatibility without layout modifications.

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

Supply Voltage Range: Substitute parts must operate within or encompass the original 4V to 16V supply voltage span. Parts with extended ranges (such as 2.7V to 36V) remain compatible as they support the original operating window.

Output Current Capability: Substitute parts must provide minimum output current per channel of 30 mA to satisfy load-driving requirements. Parts with higher output current ratings (45 mA or 65 mA) are acceptable as they exceed minimum specifications.

Input Bias Current: Substitute parts must maintain input bias current specifications at or below 5 pA to preserve signal integrity in high-impedance applications.

Voltage Input Offset: Substitute parts must maintain input offset voltage at or below 1.3 mV to ensure acceptable DC accuracy.

Compliance Requirements: All substitute parts must maintain ROHS3 compliance and MSL Level 1 rating to satisfy environmental and handling requirements equivalent to the original part.

Product Status: Active product status is required for long-term availability and production continuity.

Parameter Comparison

Parameter	TLC274ID (Main)	NCS20074DR2G	TS274CDT	TS27L4AIDT	TS27L4CDT	TS27L4IDT	TS27M4IDT
Manufacturer	Texas Instruments	onsemi	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
Amplifier Type	General Purpose	General Purpose	CMOS	CMOS	CMOS	CMOS	CMOS
Number of Circuits	4	4	4	4	4	4	4
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Slew Rate (V/µs)	3.6	2.4	5.5	0.04	0.04	0.04	0.6
Gain Bandwidth Product (MHz)	2.2	3.2	3.5	0.1	0.1	0.1	1
Current - Input Bias (pA)	0.6	5	1	1	1	1	1
Voltage - Input Offset (mV)	1.1	1.3	1.1	0.9	1.1	1.1	1.1
Current - Supply (mA)	2.7	0.42	1	0.01	0.01	0.01	0.15
Current - Output / Channel (mA)	30	65	45	45	45	45	45
Voltage - Supply Span (Min)	4 V	2.7 V	3 V	3 V	3 V	3 V	3 V
Voltage - Supply Span (Max)	16 V	36 V	16 V	16 V	16 V	16 V	16 V
Operating Temperature (°C)	-40 to 85	-40 to 125	0 to 70	-40 to 125	0 to 70	-40 to 125	-40 to 125
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

NCS20074DR2G (onsemi): This part is an active product with extended supply voltage range (2.7V to 36V) and extended operating temperature range (-40°C to 125°C). It provides higher output current capability (65 mA per channel) and improved gain bandwidth product (3.2 MHz). The NCS20074DR2G features rail-to-rail output capability, which is not present in the original TLC274ID. This part is suitable for applications requiring enhanced performance specifications and extended environmental operating conditions. ROHS3 compliance and MSL Level 1 rating are maintained.

TS274CDT (STMicroelectronics): This CMOS amplifier is an active product with the highest slew rate (5.5V/µs) and gain bandwidth product (3.5 MHz) among all substitutes. Operating temperature range is limited to 0°C to 70°C, which is narrower than the original part. This part is suitable for applications requiring maximum bandwidth performance within the specified temperature window. ROHS3 compliance and MSL Level 1 rating are maintained.

TS27L4AIDT (STMicroelectronics): This CMOS amplifier is an active product with extended operating temperature range (-40°C to 125°C). It features ultra-low supply current (10 µA per 4 channels) and the lowest input offset voltage (0.9 mV) among all substitutes. However, slew rate (0.04 V/µs) and gain bandwidth product (100 kHz) are significantly reduced compared to the original part. This part is suitable for low-power, low-frequency applications where extended temperature operation is required. ROHS3 compliance and MSL Level 1 rating are maintained.

TS27L4CDT (STMicroelectronics): This CMOS amplifier is an active product with ultra-low supply current (10 µA per 4 channels). Operating temperature range is limited to 0°C to 70°C. Slew rate (0.04 V/µs) and gain bandwidth product (100 kHz) are significantly reduced. This part is suitable for low-power applications within the specified temperature window. ROHS3 compliance and MSL Level 1 rating are maintained.

TS27L4IDT (STMicroelectronics): This CMOS amplifier is an active product with extended operating temperature range (-40°C to 125°C) and ultra-low supply current (10 µA per 4 channels). Slew rate (0.04 V/µs) and gain bandwidth product (100 kHz) are significantly reduced. This part is suitable for low-power applications requiring extended temperature operation. ROHS3 compliance and MSL Level 1 rating are maintained.

TS27M4IDT (STMicroelectronics): This CMOS amplifier is an active product with extended operating temperature range (-40°C to 125°C) and moderate supply current (150 µA per 4 channels). Slew rate (0.6 V/µs) and gain bandwidth product (1 MHz) are reduced compared to the original part but higher than the TS27L4 series. This part provides a balance between power consumption and bandwidth performance. ROHS3 compliance and MSL Level 1 rating are maintained.

Frequently Asked Questions (FAQ)

Q: Can the NCS20074DR2G be used as a direct replacement for the TLC274ID?

A: The NCS20074DR2G is mechanically and functionally compatible with the TLC274ID in the 14-SOIC package. However, it features rail-to-rail output capability and extended supply voltage range (2.7V to 36V), which differ from the original part. The NCS20074DR2G operates within the original 4V to 16V window and provides superior performance specifications. Verification of circuit-specific requirements is necessary to confirm suitability.

Q: What is the primary difference between the TS27L4 series and the TS27M4IDT?

A: The TS27L4 series (TS27L4AIDT, TS27L4CDT, TS27L4IDT) features ultra-low supply current (10 µA per 4 channels), slew rate of 0.04 V/µs, and gain bandwidth product of 100 kHz. The TS27M4IDT features higher supply current (150 µA per 4 channels), slew rate of 0.6 V/µs, and gain bandwidth product of 1 MHz. The TS27M4IDT is suitable for applications requiring higher bandwidth performance, while the TS27L4 series is optimized for ultra-low-power operation.

Q: Are all substitute parts available in the same packaging options as the TLC274ID?

A: All substitute parts are available in the 14-SOIC surface mount package, ensuring mechanical compatibility. Packaging options (Cut Tape, Digi-Reel, Tape & Reel) vary by part number and supplier. Verify packaging availability with the component supplier for your specific procurement requirements.

Q: Which substitute part has the lowest power consumption?

A: The TS27L4 series (TS27L4AIDT, TS27L4CDT, TS27L4IDT) features the lowest supply current at 10 µA per 4 channels. The TS27L4AIDT and TS27L4IDT support extended operating temperature range (-40°C to 125°C), while the TS27L4CDT is limited to 0°C to 70°C.

Q: What is the operating temperature range limitation for the TS274CDT?

A: The TS274CDT operates within the temperature range of 0°C to 70°C, which is narrower than the original TLC274ID (-40°C to 85°C). This part is not suitable for applications requiring operation below 0°C or above 70°C.

Q: Do all substitute parts maintain ROHS3 compliance?

A: Yes, all substitute parts listed maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, matching the environmental and regulatory compliance of the original TLC274ID.

Q: Which substitute part provides the highest slew rate?

A: The TS274CDT provides the highest slew rate at 5.5 V/µs, compared to the original TLC274ID at 3.6 V/µs. This enhanced slew rate capability supports faster signal transitions in bandwidth-critical applications.

Q: Can the TS27L4 series be used in applications requiring the original 3.6 V/µs slew rate?

A: No. The TS27L4 series features a slew rate of only 0.04 V/µs, which is significantly lower than the original 3.6 V/µs. This series is not suitable for applications with slew rate requirements above 0.04 V/µs.

Q: What is the minimum supply voltage for the NCS20074DR2G?

A: The NCS20074DR2G operates at a minimum supply voltage of 2.7V, which is lower than the original TLC274ID minimum of 4V. This extended lower voltage range provides additional design flexibility for low-voltage applications.

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