TLC25M4CD CMOS Amplifier Equivalent & Substitute Parts

Part Overview

The TLC25M4CD is a LinCMOS™ series CMOS amplifier integrated circuit containing four independent operational amplifier circuits in a 14-SOIC surface mount package. This device features open drain output configuration and is designed for general signal conditioning and amplification applications requiring low power consumption and wide supply voltage range operation.

The TLC25M4CD is classified as Last Time Buy, indicating discontinued production status. Identification of functionally equivalent substitute components is necessary for design continuity, procurement planning, and long-term product support.

Substiute Parts

TLC25M4CD

Texas InstrumentsIn Stock: 1944TLC25M4CD Datasheet

Current PartRFQ

TLC27M4CDR

Texas InstrumentsIn Stock: 54648TLC27M4CDR Datasheet

MFR RecommendedRFQ

TS274ACDT

STMicroelectronicsIn Stock: 45299TS274ACDT Datasheet

MFR RecommendedRFQ

TS274AIDT

STMicroelectronicsIn Stock: 2149TS274AIDT Datasheet

MFR RecommendedRFQ

TS274CDT

STMicroelectronicsIn Stock: 30113TS274CDT Datasheet

MFR RecommendedRFQ

TS274IDT

STMicroelectronicsIn Stock: 10561TS274IDT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLC25M4CD is determined by the following critical parameters:

Package Compatibility: All substitute parts must use 14-SOIC surface mount packaging (0.154", 3.90mm width) to ensure mechanical and electrical compatibility with existing PCB layouts.

Circuit Configuration: All substitutes must contain four independent amplifier circuits within a single package.

Supply Voltage Range: Substitute parts must support the minimum supply voltage of 1.4 V and maximum of 16 V to maintain operational compatibility across the full range of the original design.

Operating Temperature: Substitutes operating within 0°C to 70°C are directly compatible. Parts with extended temperature ranges (-40°C to 125°C) are also acceptable as they encompass the original operating window.

Amplifier Type and Output Configuration: CMOS amplifier topology is required. Output type variations (open drain versus standard output) do not preclude substitution when electrical interface requirements are met.

Electrical Performance Characteristics: Input bias current, input offset voltage, slew rate, and gain bandwidth product are secondary selection criteria. Substitutes with equal or superior performance in these parameters maintain or improve circuit performance.

Compliance and Certifications: All substitutes must maintain ROHS3 compliance and MSL 1 rating to ensure manufacturing process compatibility and long-term reliability.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: TLC27M4CDR

The TLC27M4CDR is the manufacturer-recommended substitute from Texas Instruments. This part maintains LinCMOS™ series continuity and is classified as Active product status, ensuring long-term availability and manufacturing support. The TLC27M4CDR is ROHS3 compliant and MSL 1 rated, matching all compliance requirements of the original TLC25M4CD. Packaging is identical 14-SOIC format. The minimum supply voltage requirement increases from 1.4 V to 3 V, which must be verified against circuit design specifications. Supply current is significantly reduced (0.57 mA versus 2.7 mA), providing improved power efficiency.

Secondary Substitutes: TS274 Series (STMicroelectronics)

The TS274ACDT, TS274AIDT, TS274CDT, and TS274IDT represent alternative CMOS amplifier solutions from STMicroelectronics. All four variants maintain 14-SOIC packaging and four-circuit configuration. These parts are classified as Active product status with substantial inventory availability. All are ROHS3 compliant and MSL 1 rated.

The TS274AIDT and TS274IDT offer extended operating temperature range (-40°C to 125°C), providing broader environmental compatibility compared to the standard 0°C to 70°C range. The TS274ACDT and TS274CDT maintain the standard temperature range matching the original specification.

All TS274 variants feature superior slew rate (5.5 V/µs versus 0.6 V/µs) and higher gain bandwidth product (3.5 MHz versus 1.7 MHz), enabling faster signal processing. Supply current is reduced to 1 mA. Minimum supply voltage is 3 V, requiring design verification.

Compliance Verification

All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing processes and storage conditions. REACH status is unaffected for all parts. ECCN classification remains EAR99 across all options.

Frequently Asked Questions (FAQ)

Q: Can the TLC25M4CD be directly replaced with TLC27M4CDR without PCB modifications?

A: Yes, direct replacement is possible from a mechanical and electrical interface perspective. Both parts use identical 14-SOIC packaging. However, the minimum supply voltage increases from 1.4 V to 3 V. Verify that your power supply circuit provides at least 3 V to all supply pins. No PCB layout changes are required.

Q: What is the key difference between TLC27M4CDR and the TS274 series substitutes?

A: TLC27M4CDR is a Texas Instruments product maintaining the LinCMOS™ series designation. The TS274 series are STMicroelectronics CMOS amplifiers with superior performance characteristics (higher slew rate and gain bandwidth product). Both are functionally compatible in 14-SOIC packaging with four circuits. Selection depends on performance requirements and supplier preference.

Q: Are TS274AIDT and TS274IDT interchangeable with TS274ACDT and TS274CDT?

A: Yes, all four TS274 variants are mechanically and electrically interchangeable in 14-SOIC packaging. The primary differences are operating temperature range and packaging format (Cut Tape versus Tape & Reel). TS274AIDT and TS274IDT support -40°C to 125°C operation, while TS274ACDT and TS274CDT operate 0°C to 70°C. Select based on your application temperature requirements and procurement format preference.

Q: Does the open drain output of TLC25M4CD affect substitute selection?

A: The TLC25M4CD specifies open drain output. The substitute parts (TLC27M4CDR and TS274 series) do not explicitly specify output type in the provided data. Verify output configuration compatibility with your circuit design before implementation. Open drain outputs require external pull-up resistors; standard outputs do not.

Q: What is the impact of increased minimum supply voltage on circuit design?

A: The TLC25M4CD operates at minimum 1.4 V supply. All substitute parts require minimum 3 V supply. If your design uses supply voltages between 1.4 V and 3 V, substitutes are not compatible without power supply redesign. Verify your actual operating supply voltage against this requirement.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all substitute parts listed (TLC27M4CDR, TS274ACDT, TS274AIDT, TS274CDT, TS274IDT) are ROHS3 compliant and MSL 1 rated. Manufacturing process compatibility and long-term reliability characteristics are maintained across all options.

Q: Which substitute offers the best performance improvement?

A: The TS274 series (all four variants) provide superior slew rate (5.5 V/µs versus 0.6 V/µs) and gain bandwidth product (3.5 MHz versus 1.7 MHz). These improvements enable faster signal processing and wider bandwidth applications. Selection should be based on your specific circuit performance requirements, not performance alone.

Q: Can I mix different substitute parts in the same design?

A: Yes, all substitute parts are mechanically and electrically compatible in 14-SOIC packaging. However, mixing different manufacturers or performance grades may complicate procurement, testing, and long-term supply chain management. Standardize on a single substitute part number for production designs.