TLC254CD Equivalent & Substitute Parts Reference

Part Overview

The TLC254CD is a CMOS amplifier integrated circuit manufactured by Texas Instruments, featuring four independent circuits in a 14-SOIC surface mount package. This device is classified as a LinCMOS™ series component with open drain output configuration and is currently in Last Time Buy product status. The TLC254CD is utilized in applications requiring low input bias current, low input offset voltage, and operation across a wide supply voltage range. Due to its Last Time Buy status, identifying equivalent and substitute parts is essential for design continuity and long-term component availability.

Substiute Parts

TLC254CD

Texas InstrumentsIn Stock: 2269TLC254CD Datasheet

Current PartRFQ

TLV9154IDR

Texas InstrumentsIn Stock: 15932TLV9154IDR 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 of the TLC254CD is determined by the following critical parameters: number of circuits (4), package type (14-SOIC), mounting configuration (surface mount), supply voltage range compatibility, amplifier type (CMOS), and operating temperature range. The TLC254CD operates from 0°C to 70°C with a minimum supply voltage of 1.4V and maximum of 16V.

Substitute parts are grouped into two categories based on functional compatibility:

Category 1: Direct CMOS Amplifier Substitutes (TS274 Series) These parts maintain CMOS amplifier architecture with four circuits in 14-SOIC packaging. The TS274CDT, TS274ACDT, TS274AIDT, and TS274IDT from STMicroelectronics share identical package geometry and circuit count. These substitutes operate within the same supply voltage range (3V to 16V minimum to maximum) and maintain CMOS technology. Key differences include slew rate (5.5V/µs versus 4.5V/µs), gain bandwidth product (3.5MHz versus 2.2MHz), and input bias current (1pA versus 0.6pA). Temperature range variants exist: TS274CDT and TS274ACDT operate 0°C to 70°C; TS274AIDT and TS274IDT operate -40°C to 125°C.

Category 2: General Purpose Rail-to-Rail Substitute (TLV9154IDR) The TLV9154IDR from Texas Instruments provides four circuits in 14-SOIC packaging with rail-to-rail output configuration. This part operates across 2.7V to 16V supply range and -40°C to 125°C temperature range. It features significantly higher slew rate (20V/µs), higher gain bandwidth product (4.5MHz), and lower supply current (560µA total versus 2.7mA). The rail-to-rail output differs from the open drain configuration of the TLC254CD.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement in Existing Designs:

The TS274 series (TS274CDT, TS274ACDT, TS274AIDT, TS274IDT) from STMicroelectronics provides the closest functional equivalence to the TLC254CD. All variants maintain CMOS amplifier architecture, four-circuit configuration, and 14-SOIC packaging. These parts are currently in Active product status, ensuring long-term availability and supply chain continuity.

TS274CDT is recommended for applications requiring identical operating temperature range (0°C to 70°C) as the TLC254CD. This part maintains the same input offset voltage specification (1.1mV) and is available in Cut Tape packaging.

TS274ACDT operates within the same temperature range (0°C to 70°C) but features improved input offset voltage (900µV) and is available in Cut Tape packaging with higher inventory levels (45,200 pcs).

TS274AIDT and TS274IDT extend the operating temperature range to -40°C to 125°C, providing enhanced thermal performance for applications requiring extended temperature operation. TS274AIDT is available in Cut Tape & Digi-Reel packaging; TS274IDT is available in Tape & Reel packaging.

All TS274 variants operate from a minimum supply voltage of 3V, which is higher than the TLC254CD minimum of 1.4V. Applications requiring operation below 3V supply voltage cannot use TS274 substitutes.

For Applications Requiring Enhanced Performance:

The TLV9154IDR from Texas Instruments offers superior performance characteristics including higher slew rate (20V/µs), higher gain bandwidth product (4.5MHz), significantly lower supply current (560µA), and improved input offset voltage (125µV). This part operates from 2.7V minimum supply voltage and -40°C to 125°C temperature range. The rail-to-rail output configuration differs from the TLC254CD open drain output and may require circuit topology modifications. The TLV9154IDR is suitable for applications where power consumption reduction and higher bandwidth are beneficial.

Compliance and Certification:

All substitute parts listed maintain ROHS3 compliance, MSL Level 1 (Unlimited), and REACH Unaffected status, matching the TLC254CD environmental and regulatory requirements. All parts carry EAR99 ECCN classification and 8542.33.0001 HTSUS code.

Frequently Asked Questions (FAQ)

Q1: Can TS274 series parts directly replace TLC254CD in all applications?

The TS274 series maintains CMOS amplifier architecture and 14-SOIC packaging, making them functionally compatible for most applications. However, the minimum supply voltage specification differs: TS274 series requires minimum 3V, while TLC254CD operates from 1.4V. Applications operating below 3V supply voltage require alternative solutions. Additionally, TS274 parts do not specify output type configuration, whereas TLC254CD features open drain output. Circuit design verification is necessary to confirm compatibility with existing output stage requirements.

Q2: What is the significance of the supply voltage range difference between TLC254CD (1.4V min) and TS274 series (3V min)?

The TLC254CD supports operation at lower supply voltages (1.4V to 16V), making it suitable for battery-powered and ultra-low-voltage applications. The TS274 series minimum of 3V restricts use in applications requiring sub-3V operation. For designs operating at 3V or higher, this difference is not a limiting factor. Applications requiring 1.4V to 3V operation must retain the TLC254CD or identify alternative parts with lower minimum supply voltage specifications.

Q3: How do temperature range variants affect substitution decisions?

The TLC254CD operates from 0°C to 70°C. TS274CDT and TS274ACDT maintain this temperature range, providing direct thermal compatibility. TS274AIDT and TS274IDT extend operation to -40°C to 125°C, offering enhanced thermal performance for applications requiring extended temperature operation or military/aerospace specifications. Selection depends on application temperature requirements. For standard commercial temperature range (0°C to 70°C), any TS274 variant is acceptable; for extended temperature applications, TS274AIDT or TS274IDT are required.

Q4: What are the implications of using TLV9154IDR as a substitute?

The TLV9154IDR provides superior performance metrics: 20V/µs slew rate (versus 4.5V/µs), 4.5MHz gain bandwidth product (versus 2.2MHz), and 560µA total supply current (versus 2.7mA). However, the output configuration changes from open drain to rail-to-rail, requiring circuit topology evaluation. The TLV9154IDR is suitable for applications where higher bandwidth, faster slew rate, and lower power consumption are beneficial. Applications with output stage designs dependent on open drain configuration require circuit modification or alternative substitutes.

Q5: What packaging options are available for substitute parts?

TLC254CD is supplied in Tube packaging. Substitute parts offer multiple packaging options: TS274CDT and TS274ACDT are available in Cut Tape (CT); TS274AIDT is available in Cut Tape & Digi-Reel®; TS274IDT is available in Tape & Reel (TR); TLV9154IDR is available in Cut Tape (CT) & Digi-Reel®. Packaging selection affects handling, storage, and automated assembly compatibility. Verify packaging compatibility with manufacturing processes before final part selection.

Q6: Are all substitute parts RoHS and REACH compliant?

All substitute parts listed (TS274 series and TLV9154IDR) maintain ROHS3 compliance, MSL Level 1 (Unlimited), and REACH Unaffected status, matching TLC254CD environmental requirements. All parts carry EAR99 ECCN classification. Regulatory and environmental compliance is maintained across all substitutes.

Q7: What inventory considerations should influence substitute part selection?

Current inventory levels vary: TS274ACDT (45,200 pcs), TS274CDT (30,100 pcs), TS274IDT (10,534 pcs), TS274AIDT (2,098 pcs), and TLV9154IDR (15,896 pcs). Higher inventory levels provide greater supply chain security and shorter lead times. For long-term production requirements, parts with higher inventory levels reduce supply risk. TS274ACDT offers the highest inventory availability among direct CMOS substitutes.