TLC1078IDR Equivalent & Substitute Parts

Part Overview

The TLC1078IDR is a CMOS amplifier integrated circuit manufactured by Texas Instruments, configured as a dual-channel (2 circuit) operational amplifier in an 8-SOIC surface mount package. This device operates across a supply voltage range of 3V to 16V with an operating temperature range of -40°C to 85°C. The TLC1078IDR is classified as an Active product with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are necessary when the TLC1078IDR reaches end-of-life status, inventory constraints occur, or when design requirements necessitate alternative performance characteristics such as higher slew rate, increased gain bandwidth product, or extended temperature operating ranges.

Key Parameters

Parameter	TLC1078IDR Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	2	—
Slew Rate	0.032	V/µs
Gain Bandwidth Product	110	kHz
Current - Input Bias	1	pA
Voltage - Input Offset	180	µV
Current - Supply (x2 Channels)	29	µA
Current - Output / Channel	30	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	16	V
Operating Temperature Range	-40 to 85	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Product Status	Active	—

Substitute Part Grouping Explanation

Substitution compatibility for the TLC1078IDR is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Amplifier Type: CMOS
Number of Circuits: 2
Package / Case: 8-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Voltage - Supply Span: Minimum 3V, Maximum 16V
Current - Output / Channel: Minimum 30 mA

Performance Parameters (Application-Dependent):

Slew Rate: 0.032 V/µs (baseline)
Gain Bandwidth Product: 110 kHz (baseline)
Current - Input Bias: 1 pA (baseline)
Voltage - Input Offset: 180 µV (baseline)
Current - Supply: 29 µA per dual channels (baseline)
Operating Temperature Range: -40°C to 85°C (baseline)

Substitute parts must maintain the mandatory compatibility criteria. Performance parameters may exceed baseline specifications without compromising functionality, provided the application design accommodates higher performance characteristics. Parts with reduced operating temperature ranges or lower output current capability are not suitable substitutes.

Parameter Comparison

Parameter	TLC1078IDR	LM432MA/NOPB	TS272ACDT	TS272AIDT	TS272BIDT	TS272CDT	TS272IDT	TS27L2ACDT	TS27L2AIDT	TS27L2BIDT	TS27L2CD	Unit
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	—
Slew Rate	0.032	—	5.5	5.5	5.5	5.5	5.5	0.04	0.04	0.04	0.04	V/µs
Gain Bandwidth Product	110	1000	3500	3500	3500	3500	3500	100	100	100	100	kHz
Current - Input Bias	1	3	1	1	1	1	1	1	1	1	1	pA
Voltage - Input Offset	180	600	900	900	250	1100	1100	900	1100	250	1100	µV
Current - Supply (x2 Channels)	29	150	1000	1000	1000	1000	1000	10	10	10	10	µA
Current - Output / Channel	30	30	45	45	45	45	45	45	45	45	45	mA
Voltage - Supply Span (Min)	3	2.5	3	3	3	3	3	3	3	3	3	V
Voltage - Supply Span (Max)	16	16	16	16	16	16	16	16	16	16	16	V
Operating Temperature Range	-40 to 85	-40 to 85	0 to 70	-40 to 125	-40 to 125	0 to 70	-40 to 125	0 to 70	-40 to 125	-40 to 125	0 to 70	°C
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	—
Product Status	Active	Obsolete	Active	Active	Active	Active	Active	Active	Active	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

Primary Substitute Candidates (Active Status, Full Temperature Range):

The TS272AIDT, TS272BIDT, and TS272IDT from STMicroelectronics are the preferred substitutes for the TLC1078IDR. These parts maintain CMOS amplifier architecture, dual-circuit configuration, and 8-SOIC packaging. All three operate across the extended temperature range of -40°C to 125°C, exceeding the TLC1078IDR baseline of -40°C to 85°C. These parts deliver higher slew rate (5.5 V/µs versus 0.032 V/µs) and increased gain bandwidth product (3.5 MHz versus 110 kHz), with output current capability of 45 mA per channel, exceeding the 30 mA baseline. All three maintain RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Secondary Substitute Candidates (Active Status, Limited Temperature Range):

The TS272ACDT and TS272CDT from STMicroelectronics are suitable substitutes for applications operating within the 0°C to 70°C temperature range. These parts share identical electrical performance characteristics with TS272AIDT, TS272BIDT, and TS272IDT but operate within a narrower temperature window. Both maintain RoHS3 compliance and MSL 1 rating.

Low-Power Substitute Candidates (Active Status):

The TS27L2ACDT, TS27L2AIDT, TS27L2BIDT, and TS27L2CD from STMicroelectronics provide low-power operation with supply current of 10 µA per dual channels, compared to the TLC1078IDR baseline of 29 µA. These parts maintain slew rate of 0.04 V/µs and gain bandwidth product of 100 kHz, closely matching TLC1078IDR performance. TS27L2AIDT and TS27L2BIDT support the extended temperature range of -40°C to 125°C. TS27L2ACDT and TS27L2CD operate within 0°C to 70°C. All maintain RoHS3 compliance and MSL 1 rating.

Not Recommended:

LM432MA/NOPB is classified as Obsolete and is not recommended for new designs despite meeting package and voltage supply requirements.

Frequently Asked Questions (FAQ)

Q: Can TS272ACDT replace TLC1078IDR in all applications?

A: TS272ACDT is electrically compatible with TLC1078IDR in terms of package, supply voltage range, and dual-circuit CMOS architecture. However, TS272ACDT operates within 0°C to 70°C temperature range, whereas TLC1078IDR operates from -40°C to 85°C. If your application requires operation below 0°C or above 70°C, TS272ACDT is not suitable. For full temperature range compatibility, use TS272AIDT, TS272BIDT, or TS272IDT instead.

Q: What is the difference between TS272BIDT and TS272AIDT?

A: Both TS272BIDT and TS272AIDT share identical electrical performance specifications and operate across -40°C to 125°C. The primary difference is packaging: TS272BIDT is supplied in Tape & Reel (TR) format, while TS272AIDT is supplied in Cut Tape (CT) & Digi-Reel® format. Select based on your procurement and assembly requirements.

Q: Why do some substitute parts have higher slew rate and gain bandwidth product?

A: The TS272 series (TS272ACDT, TS272AIDT, TS272BIDT, TS272CDT, TS272IDT) deliver 5.5 V/µs slew rate and 3.5 MHz gain bandwidth product, significantly exceeding TLC1078IDR specifications of 0.032 V/µs and 110 kHz. These enhanced performance characteristics do not compromise backward compatibility; applications designed for TLC1078IDR will function correctly with TS272 series parts. Higher performance may improve signal fidelity in bandwidth-limited applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed—LM432MA/NOPB, TS272ACDT, TS272AIDT, TS272BIDT, TS272CDT, TS272IDT, TS27L2ACDT, TS27L2AIDT, TS27L2BIDT, and TS27L2CD—are RoHS3 compliant with unlimited moisture sensitivity rating (MSL 1).

Q: Which substitute offers the lowest power consumption?

A: The TS27L2 series (TS27L2ACDT, TS27L2AIDT, TS27L2BIDT, TS27L2CD) operates at 10 µA supply current per dual channels, compared to TLC1078IDR at 29 µA. This represents a 66% reduction in supply current. Select TS27L2AIDT or TS27L2BIDT for extended temperature range (-40°C to 125°C) or TS27L2ACDT and TS27L2CD for standard temperature range (0°C to 70°C).

Q: Is the 8-SOIC package identical across all substitute parts?

A: All substitute parts use 8-SOIC (0.154", 3.90mm Width) surface mount packaging, identical to TLC1078IDR. Pin configuration and footprint compatibility are maintained across all listed substitutes. Packaging format differs (Tape & Reel, Cut Tape, Tube) based on supplier and part number variant, but the physical package remains consistent.

Q: Can I use LM432MA/NOPB as a substitute?

A: LM432MA/NOPB is classified as Obsolete product status. Although it meets package and voltage supply requirements, obsolete parts present supply chain risk and are not recommended for new designs or production applications. Use active alternatives such as TS272 or TS27L2 series instead.

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