TLC27L2MD CMOS Amplifier Equivalent & Substitute Parts

Part Overview

The TLC27L2MD 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 is classified as a Last Time Buy product, indicating that Texas Instruments has discontinued active production and existing inventory represents the final availability window. The LinCMOS™ series design provides ultra-low input bias current and low power consumption characteristics suitable for battery-powered and precision analog applications.

Due to the Last Time Buy status of the TLC27L2MD, identification of functionally equivalent substitute components is necessary for design continuity and long-term supply chain planning. Substitute parts must maintain compatibility across electrical performance parameters, package form factor, and operating temperature ranges to ensure direct replacement capability.

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 2 Channels)	20	µA
Current - Output / Channel	30	mA
Voltage - Supply Span (Min)	4	V
Voltage - Supply Span (Max)	16	V
Operating Temperature Range	-55 to 125	°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

Substitute parts for the TLC27L2MD are evaluated based on the following critical parameters that determine functional equivalence:

Primary Compatibility Criteria:

Amplifier Type: CMOS technology
Number of Circuits: Dual-channel configuration (2 circuits)
Package / Case: 8-SOIC form factor with 0.154" (3.90mm) width
Mounting Type: Surface Mount
Voltage Supply Range: Minimum 4V to 16V maximum overlap required

Secondary Performance Parameters:

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

Regulatory & Environmental Compliance:

RoHS3 Compliance required
Moisture Sensitivity Level 1 (Unlimited)
Operating temperature range must encompass or exceed -55°C to 125°C

Substitute parts are grouped into two categories: Direct CMOS Substitutes (TS27L2 series from STMicroelectronics) which maintain identical CMOS architecture and performance characteristics, and Performance-Enhanced Alternatives (TS27M2 series and LM432MA/NOPB) which offer higher bandwidth and slew rate capabilities while maintaining package and supply voltage compatibility.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (kHz)	Input Bias (pA)	Input Offset (mV)	Supply Current (µA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Status
TLC27L2MD	Texas Instruments	CMOS	0.03	110	0.6	1.1	20	30	4	16	-55 to 125	Last Time Buy
TS27L2CD	STMicroelectronics	CMOS	0.04	100	1	1.1	10	45	3	16	0 to 70	Active
TS27L2AIDT	STMicroelectronics	CMOS	0.04	100	1	1.1	10	45	3	16	-40 to 125	Active
TS27L2BIDT	STMicroelectronics	CMOS	0.04	100	1	0.25	10	45	3	16	-40 to 125	Active
TS27L2CDT	STMicroelectronics	CMOS	0.04	100	1	1.1	10	45	3	16	0 to 70	Active
TS27L2IDT	STMicroelectronics	CMOS	0.04	100	1	1.1	10	45	3	16	-40 to 125	Active
TS27M2BIDT	STMicroelectronics	CMOS	0.6	1000	1	0.25	150	45	3	16	-40 to 125	Active
TS27M2CDT	STMicroelectronics	CMOS	0.6	1000	1	1.1	150	45	3	16	0 to 70	Active
TS27M2IDT	STMicroelectronics	CMOS	0.6	1000	1	1.1	150	45	3	16	-40 to 125	Active
LM432MA/NOPB	Texas Instruments	General Purpose	—	1000	3	0.6	150	30	2.5	16	-40 to 85	Obsolete

Engineering Selection Recommendations

Direct Substitutes (Recommended for Pin-Compatible Replacement):

The TS27L2 series from STMicroelectronics provides the closest functional equivalence to the TLC27L2MD. These parts maintain CMOS amplifier architecture, dual-channel configuration, and 8-SOIC package compatibility. Selection within the TS27L2 series depends on operating temperature requirements and packaging format:

TS27L2AIDT and TS27L2IDT: Suitable for applications requiring extended temperature operation (-40°C to 125°C). Both parts are in active production status with RoHS3 compliance. TS27L2IDT offers higher inventory availability (17,059 units) in Tape & Reel packaging.
TS27L2BIDT: Provides superior input offset voltage specification (0.25 mV versus 1.1 mV) while maintaining -40°C to 125°C operating range. Recommended for precision analog applications where offset voltage is a critical parameter.
TS27L2CD and TS27L2CDT: Restricted to 0°C to 70°C operating temperature range. Suitable only for applications not requiring the full -55°C to 125°C range of the TLC27L2MD. Available in Tube and Cut Tape packaging formats respectively.

Performance-Enhanced Alternatives:

The TS27M2 series offers significantly higher slew rate (0.6 V/µs versus 0.03 V/µs) and gain bandwidth product (1 MHz versus 110 kHz), enabling use in higher-frequency signal processing applications. These parts maintain 8-SOIC package compatibility and CMOS technology but consume higher supply current (150 µA versus 20 µA). Selection criteria:

TS27M2IDT: Extended temperature range (-40°C to 125°C) with 1,870 units in stock. Suitable for high-speed applications requiring full temperature coverage.
TS27M2BIDT: Offers lowest input offset voltage (0.25 mV) among TS27M2 variants with extended temperature range and 25,180 units available.
TS27M2CDT: Limited to 0°C to 70°C operating range. Use only when application temperature constraints permit.

Regulatory Compliance:

All recommended substitute parts maintain RoHS3 compliance and Moisture Sensitivity Level 1 (Unlimited) status, matching the TLC27L2MD environmental specifications. The LM432MA/NOPB, while offering 1 MHz bandwidth, carries Obsolete product status and is not recommended for new designs despite Texas Instruments origin.

Frequently Asked Questions (FAQ)

Q: Can TS27L2 series parts directly replace TLC27L2MD in existing designs?

A: TS27L2 series parts are pin-compatible and functionally equivalent for applications operating within 0°C to 70°C or -40°C to 125°C temperature ranges. The primary design consideration is that TS27L2 parts require minimum 3V supply voltage compared to TLC27L2MD's 4V minimum. Verify that your power supply design accommodates this lower threshold. All TS27L2 variants maintain CMOS architecture and dual-channel configuration.

Q: What is the difference between TS27L2AIDT and TS27L2BIDT?

A: Both parts are functionally identical except for input offset voltage specification. TS27L2AIDT specifies 1.1 mV input offset voltage, matching the TLC27L2MD. TS27L2BIDT specifies 0.25 mV input offset voltage, providing superior precision for applications sensitive to DC offset errors. Both support -40°C to 125°C operating range and are in active production.

Q: Why do TS27M2 series parts consume more supply current than TS27L2 series?

A: TS27M2 series amplifiers are optimized for higher-frequency operation, achieving 1 MHz gain bandwidth product and 0.6 V/µs slew rate compared to TS27L2's 100 kHz and 0.04 V/µs specifications. This performance enhancement requires higher quiescent current consumption (150 µA versus 10 µA per dual-channel). Use TS27M2 series only when application bandwidth requirements exceed TS27L2 capabilities.

Q: Are TS27L2CD and TS27L2CDT suitable replacements for the TLC27L2MD?

A: TS27L2CD and TS27L2CDT are functionally equivalent to other TS27L2 variants but are restricted to 0°C to 70°C operating temperature. The TLC27L2MD supports -55°C to 125°C. These parts are suitable only for applications that do not require operation below 0°C or above 70°C. Verify your application's temperature requirements before selection.

Q: What packaging format should I select: Tube, Tape & Reel, or Cut Tape?

A: Packaging format selection depends on assembly process and volume requirements. Tube packaging (TS27L2CD) suits low-volume or manual assembly operations. Tape & Reel (TS27L2IDT, TS27L2BIDT, TS27M2BIDT) is standard for automated pick-and-place assembly. Cut Tape & Digi-Reel (TS27L2AIDT, TS27L2CDT, TS27M2CDT, TS27M2IDT) provides flexibility for mixed-volume production. All formats are RoHS3 compliant with MSL 1 rating.

Q: Is the LM432MA/NOPB a viable substitute for TLC27L2MD?

A: The LM432MA/NOPB is not recommended despite offering 1 MHz bandwidth and Texas Instruments origin. This part carries Obsolete product status, indicating discontinued production and limited future availability. Additionally, it is classified as General Purpose amplifier rather than CMOS, operates only to 85°C maximum temperature, and has higher input bias current (3 nA versus 0.6 pA). Use only if existing inventory is available and application constraints permit.

Q: Can I use TS27L2 parts in applications originally designed for TLC27L2MD without circuit modifications?

A: TS27L2 parts are pin-compatible and require no circuit modifications for basic functionality. However, verify the following design parameters: (1) Minimum supply voltage is 3V for TS27L2 versus 4V for TLC27L2MD; (2) Operating temperature range must match your application requirements; (3) Lower slew rate (0.04 V/µs versus 0.03 V/µs) and gain bandwidth product (100 kHz versus 110 kHz) are acceptable for your signal bandwidth. If these parameters are compatible, direct substitution is possible.

Q: What is the inventory status of substitute parts?

A: TS27L2CDT offers the highest inventory availability (55,731 units) in Cut Tape format. TS27M2BIDT provides 25,180 units in Tape & Reel format. TS27L2IDT offers 17,059 units. TS27M2CDT has 16,120 units. TS27L2CD has 10,100 units. TS27L2ACDT has 10,400 units. TS27L2AIDT has 3,120 units. TS27M2IDT has 1,870 units. All substitute parts are in active production status except LM432MA/NOPB (Obsolete).

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