TLC27L7CD Equivalent & Substitute Parts

Part Overview

The TLC27L7CD is a CMOS amplifier integrated circuit manufactured by Texas Instruments, configured as a dual-channel operational amplifier in an 8-SOIC surface mount package. This device operates within a supply voltage range of 3V to 16V and is designed for low-power applications with a maximum supply current of 20µA per channel.

The TLC27L7CD carries a Last Time Buy product status, indicating that Texas Instruments has discontinued this component and existing inventory represents the final manufacturing run. This status necessitates identification of equivalent and substitute parts to ensure design continuity and long-term component availability for new production and maintenance applications.

Key Parameters

Parameter	Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	2	—
Slew Rate	0.03	V/µs
Gain Bandwidth Product	110	kHz
Current - Input Bias	0.6	pA
Voltage - Input Offset	1.1	mV
Current - Supply (per Channel)	20	µA
Current - Output / Channel	30	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	16	V
Operating Temperature Range	0 to 70	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TLC27L7CD is determined by strict alignment of electrical and mechanical parameters. The following criteria establish valid substitution relationships:

Primary Substitution Criteria:

Amplifier Type: CMOS
Number of Circuits: 2
Package / Case: 8-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Voltage - Supply Span: 3V minimum to 16V maximum
Operating Temperature Range: Minimum 0°C to 70°C coverage

Secondary Compatibility Parameters:

Slew Rate: 0.03V/µs or greater
Gain Bandwidth Product: 110 kHz or greater
Current - Input Bias: 0.6 pA or lower
Voltage - Input Offset: 1.1 mV or lower
Current - Supply: 20µA per channel or lower
Current - Output / Channel: 30 mA or greater

Substitute parts are grouped into two categories: direct equivalents (identical electrical specifications and packaging) and functional equivalents (compatible electrical performance within the specified operating envelope with identical mechanical compatibility).

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (kHz)	Input Bias (pA)	Input Offset (mV)	Supply Current/Ch (µA)	Output Current (mA)	Temp Range (°C)	Product Status	Packaging
TLC27L7CD	Texas Instruments	CMOS	0.03	110	0.6	1.1	20	30	0 to 70	Last Time Buy	Tube
TLC27L7CDR	Texas Instruments	CMOS	0.03	110	0.6	1.1	20	30	0 to 70	Active	Tape & Reel
TS27L2CD	STMicroelectronics	CMOS	0.04	100	1	1.1	10	45	0 to 70	Active	Tube
TS27L2ACDT	STMicroelectronics	CMOS	0.04	100	1	0.9	10	45	0 to 70	Active	Tape & Reel
TS27L2AIDT	STMicroelectronics	CMOS	0.04	100	1	1.1	10	45	-40 to 125	Active	Cut Tape
TS272ACDT	STMicroelectronics	CMOS	5.5	3500	1	0.9	1	45	0 to 70	Active	Cut Tape
TS272AIDT	STMicroelectronics	CMOS	5.5	3500	1	0.9	1	45	-40 to 125	Active	Cut Tape
TS272BIDT	STMicroelectronics	CMOS	5.5	3500	1	0.25	1	45	-40 to 125	Active	Tape & Reel
TS272CDT	STMicroelectronics	CMOS	5.5	3500	1	1.1	1	45	0 to 70	Active	Cut Tape
TS272IDT	STMicroelectronics	CMOS	5.5	3500	1	1.1	1	45	-40 to 125	Active	Tape & Reel
LM432MA/NOPB	Texas Instruments	General Purpose	—	1000	3	0.6	150	30	-40 to 85	Obsolete	Tube

Engineering Selection Recommendations

Direct Equivalent (Recommended Primary Substitute):

TLC27L7CDR is the direct electrical and functional equivalent of TLC27L7CD. Both devices are manufactured by Texas Instruments, share identical electrical specifications, and are housed in the 8-SOIC package. The primary distinction is packaging format: TLC27L7CDR is supplied in Tape & Reel format while TLC27L7CD is supplied in Tube format. TLC27L7CDR maintains Active product status, ensuring continued availability and manufacturing support. This part is suitable for direct substitution in all applications where TLC27L7CD was originally specified.

Functional Equivalents (Secondary Substitutes):

The TS27L2 series (TS27L2CD, TS27L2ACDT, TS27L2AIDT) manufactured by STMicroelectronics provides functional equivalence with minor performance variations. These devices maintain CMOS amplifier architecture, dual-channel configuration, and 8-SOIC packaging. The TS27L2 series exhibits lower supply current (10µA per channel versus 20µA), higher output current capability (45mA versus 30mA), and marginally lower slew rate (0.04V/µs versus 0.03V/µs). All TS27L2 variants maintain Active product status and ROHS3 compliance. Selection among TS27L2 variants depends on packaging requirements: TS27L2CD (Tube), TS27L2ACDT (Tape & Reel), or TS27L2AIDT (Cut Tape with extended temperature range).

The TS272 series (TS272ACDT, TS272AIDT, TS272BIDT, TS272CDT, TS272IDT) manufactured by STMicroelectronics represents higher-performance alternatives with significantly enhanced bandwidth (3.5 MHz versus 110 kHz) and slew rate (5.5V/µs versus 0.03V/µs). These devices are suitable for applications requiring faster signal processing. The TS272 series maintains lower supply current (1mA per channel) and higher output current (45mA). All TS272 variants are Active products with ROHS3 compliance. Temperature range variants are available: standard (0°C to 70°C) and extended (-40°C to 125°C).

Not Recommended:

LM432MA/NOPB carries Obsolete product status and exhibits significantly higher supply current (150µA per channel), making it unsuitable for low-power applications. This part is not recommended for new designs or component substitution.

Frequently Asked Questions (FAQ)

Q: Can TLC27L7CDR be used as a direct replacement for TLC27L7CD?

A: Yes. TLC27L7CDR is electrically and functionally identical to TLC27L7CD. Both devices share the same electrical specifications, CMOS amplifier architecture, dual-channel configuration, and 8-SOIC package. The only difference is packaging format: TLC27L7CDR is supplied in Tape & Reel format while TLC27L7CD is supplied in Tube format. Both formats are compatible with standard surface mount assembly processes.

Q: What are the key differences between the TLC27L7 and TS27L2 series?

A: Both series are CMOS dual-channel amplifiers in 8-SOIC packages with identical supply voltage ranges (3V to 16V). The TLC27L7 operates at 20µA per channel supply current with 30mA output current and 110 kHz bandwidth. The TS27L2 operates at 10µA per channel supply current with 45mA output current and 100 kHz bandwidth. The TS27L2 series provides lower power consumption and higher output current capability, making it suitable for applications requiring extended battery life or higher load driving capability.

Q: When should the TS272 series be selected instead of TLC27L7 or TS27L2?

A: The TS272 series is selected for applications requiring higher bandwidth and faster signal processing. The TS272 provides 3.5 MHz bandwidth and 5.5V/µs slew rate compared to 110 kHz and 0.03V/µs for the TLC27L7. However, the TS272 operates at 1mA per channel supply current, which is higher than both the TLC27L7 (20µA) and TS27L2 (10µA). Select the TS272 series only when bandwidth and slew rate requirements exceed the capabilities of the lower-power alternatives.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this reference—TLC27L7CDR, TS27L2CD, TS27L2ACDT, TS27L2AIDT, TS272ACDT, TS272AIDT, TS272BIDT, TS272CDT, and TS272IDT—are ROHS3 compliant. All parts maintain Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture handling requirements during storage or assembly.

Q: What packaging options are available for the TS27L2 series?

A: The TS27L2 series is available in three packaging formats: Tube (TS27L2CD), Tape & Reel (TS27L2ACDT), and Cut Tape (TS27L2AIDT). Selection depends on assembly process requirements and volume. Tube packaging is suitable for lower-volume applications and manual assembly. Tape & Reel and Cut Tape formats are optimized for automated surface mount assembly processes.

Q: Does the extended temperature range variant affect electrical performance?

A: No. Extended temperature range variants (such as TS27L2AIDT with -40°C to 125°C range versus TS27L2CD with 0°C to 70°C range) maintain identical electrical specifications within their respective operating ranges. The extended temperature range variant is selected based on application environmental requirements, not performance differences.

Q: Can the TLC27L7CD be used in applications originally designed for the LM432MA/NOPB?

A: No. The LM432MA/NOPB is classified as Obsolete and exhibits significantly different electrical characteristics, including 150µA per channel supply current compared to 20µA for the TLC27L7CD. The LM432MA/NOPB is a general-purpose amplifier rather than a CMOS amplifier, resulting in fundamentally different power consumption profiles. The LM432MA/NOPB is not suitable for substitution in TLC27L7CD applications.

Q: What is the significance of the Last Time Buy status for TLC27L7CD?

A: Last Time Buy status indicates that Texas Instruments has discontinued manufacturing of the TLC27L7CD and the current inventory represents the final production run. Once existing stock is depleted, the part will no longer be available from the manufacturer. Applications currently using TLC27L7CD should transition to TLC27L7CDR (Active status) or alternative substitute parts to ensure long-term component availability and design continuity.

Q: Are all substitute parts available in equivalent quantities?

A: Inventory availability varies among substitute parts. TLC27L7CDR (2034 units), TS27L2CD (10100 units), TS272CDT (17007 units), and TS272IDT (21553 units) maintain substantial inventory levels. Selection should consider both electrical compatibility and inventory availability for production scheduling.

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