TLC27L9CD Equivalent & Substitute Parts

Part Overview

The TLC27L9CD is a general-purpose operational amplifier manufactured by Texas Instruments, featuring four independent circuits in a 14-SOIC surface-mount package. This LinCMOS™ series device operates across a 3V to 16V supply range with low input bias current (0.7 pA) and is designed for general-purpose amplification applications. The TLC27L9CD carries a Last Time Buy product status, indicating discontinued production. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for existing applications.

Substiute Parts

TLC27L9CD

Texas InstrumentsIn Stock: 6196TLC27L9CD Datasheet

Current PartRFQ

TLC27L9CDR

Texas InstrumentsIn Stock: 1282TLC27L9CDR Datasheet

MFR RecommendedRFQ

TS27L4AIDT

STMicroelectronicsIn Stock: 1887TS27L4AIDT Datasheet

MFR RecommendedRFQ

TS27L4CDT

STMicroelectronicsIn Stock: 30238TS27L4CDT Datasheet

MFR RecommendedRFQ

TS27L4IDT

STMicroelectronicsIn Stock: 23476TS27L4IDT Datasheet

MFR RecommendedRFQ

TS27M4CDT

STMicroelectronicsIn Stock: 5462TS27M4CDT Datasheet

MFR RecommendedRFQ

TS27M4IDT

STMicroelectronicsIn Stock: 7922TS27M4IDT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLC27L9CD is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Number of circuits: 4 independent amplifier circuits required
• Package compatibility: 14-SOIC (0.154", 3.90mm Width) surface-mount package
• Supply voltage range: Minimum 3V, maximum 16V
• Mounting type: Surface mount only
• RoHS3 compliance and MSL Level 1 rating

Secondary Performance Parameters:

• Slew rate: 0.03V/µs (TLC27L9CD baseline)
• Gain bandwidth product: 110 kHz (TLC27L9CD baseline)
• Input bias current: 0.7 pA (TLC27L9CD baseline)
• Input offset voltage: 200 µV (TLC27L9CD baseline)
• Supply current: 57 µA across four channels (TLC27L9CD baseline)
• Output current per channel: 30 mA (TLC27L9CD baseline)

Substitute parts are grouped into two categories based on performance characteristics:

Group 1 - Direct Performance Match (TLC27L9CDR): Identical electrical specifications with active product status, enabling direct replacement without circuit redesign.

Group 2 - Performance Variants (TS27L4 and TS27M4 Series): STMicroelectronics alternatives with modified electrical characteristics. TS27L4 variants maintain baseline performance (0.04V/µs slew rate, 100 kHz bandwidth). TS27M4 variants provide enhanced performance (0.6V/µs slew rate, 1 MHz bandwidth) suitable for higher-speed applications. All maintain 14-SOIC package compatibility and 3V–16V supply range.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (No Circuit Redesign Required):

The TLC27L9CDR is the primary substitute for the TLC27L9CD. Both parts share identical electrical specifications, including slew rate (0.03V/µs), gain bandwidth product (110 kHz), input bias current (0.7 pA), and input offset voltage (200 µV). TLC27L9CDR carries Active product status, ensuring long-term availability and supply chain continuity. Both parts maintain ROHS3 compliance and MSL Level 1 rating. The TLC27L9CDR is suitable for applications requiring no performance modification and direct pin-compatible substitution.

For Extended Temperature Range Applications:

The TS27L4AIDT and TS27L4IDT provide extended operating temperature ranges (-40°C to 125°C) compared to the TLC27L9CD (0°C to 70°C). These parts maintain the same 14-SOIC package and 3V–16V supply range. Performance differences include slightly higher slew rate (0.04V/µs vs. 0.03V/µs), lower gain bandwidth product (100 kHz vs. 110 kHz), and reduced supply current (10 µA vs. 57 µA). Circuit validation is required to confirm compatibility with the original design specifications.

For Low-Power Applications:

The TS27L4 series (TS27L4AIDT, TS27L4CDT, TS27L4IDT) consumes significantly lower supply current (10 µA across four channels) compared to the TLC27L9CD (57 µA). This reduction is beneficial for battery-powered or energy-constrained applications. Input offset voltage increases to 900–1100 µV, and output current per channel increases to 45 mA. These parts are suitable for applications where power consumption is a primary design constraint.

For High-Speed Applications:

The TS27M4CDT and TS27M4IDT provide enhanced performance with slew rate of 0.6V/µs and gain bandwidth product of 1 MHz, compared to the TLC27L9CD baseline of 0.03V/µs and 110 kHz. Supply current increases to 150 µA across four channels. These parts are suitable for applications requiring faster signal processing and higher bandwidth. Circuit redesign and performance validation are required.

Compliance and Certification:

All substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with modern manufacturing and environmental standards. All parts carry REACH Unaffected status and EAR99 export classification, matching the original TLC27L9CD regulatory profile.

Frequently Asked Questions (FAQ)

Q1: Can I directly replace TLC27L9CD with TLC27L9CDR without modifying my circuit?

A: Yes. The TLC27L9CDR is electrically identical to the TLC27L9CD across all specified parameters, including slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current. Both parts use the 14-SOIC package and operate across the 3V–16V supply range. No circuit modification is required. TLC27L9CDR is the recommended substitute due to its Active product status.

Q2: What are the key differences between TS27L4 and TS27M4 series substitutes?

A: The TS27L4 series maintains baseline performance characteristics similar to the TLC27L9CD (0.04V/µs slew rate, 100 kHz bandwidth, 10 µA supply current). The TS27M4 series provides enhanced performance (0.6V/µs slew rate, 1 MHz bandwidth, 150 µA supply current). TS27M4 parts are suitable for high-speed applications, while TS27L4 parts are optimized for low-power operation. Both series maintain 14-SOIC package compatibility and 3V–16V supply range.

Q3: Are TS27L4 and TS27M4 parts pin-compatible with TLC27L9CD?

A: Yes. All substitute parts use the 14-SOIC (0.154", 3.90mm Width) surface-mount package, ensuring mechanical and electrical pin compatibility. However, electrical performance differences (slew rate, bandwidth, supply current, input offset voltage) may require circuit validation depending on application requirements.

Q4: Which substitute part should I use for battery-powered applications?

A: The TS27L4 series (TS27L4AIDT, TS27L4CDT, TS27L4IDT) is recommended for battery-powered applications due to significantly reduced supply current (10 µA across four channels) compared to the TLC27L9CD (57 µA). This represents an 82% reduction in power consumption. Input offset voltage increases to 900–1100 µV, which may require circuit validation for precision applications.

Q5: What is the difference between TS27L4CDT and TS27L4IDT packaging?

A: TS27L4CDT is supplied in Cut Tape (CT) format, while TS27L4IDT is supplied in Cut Tape (CT) & Digi-Reel® format. Both parts are electrically identical. The primary difference is packaging and handling format. TS27L4IDT offers extended operating temperature range (-40°C to 125°C) compared to TS27L4CDT (0°C to 70°C), matching the TLC27L9CD temperature range of 0°C to 70°C.

Q6: Can I use TS27M4 parts as a direct replacement for TLC27L9CD?

A: TS27M4 parts are not direct replacements due to significant performance differences. Slew rate increases from 0.03V/µs to 0.6V/µs (20× faster), gain bandwidth product increases from 110 kHz to 1 MHz (9× higher), and supply current increases from 57 µA to 150 µA (2.6× higher). Circuit redesign and performance validation are required. TS27M4 parts are suitable only for applications requiring enhanced speed and bandwidth.

Q7: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (TLC27L9CDR, TS27L4AIDT, TS27L4CDT, TS27L4IDT, TS27M4CDT, TS27M4IDT) are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating. All parts carry REACH Unaffected status and EAR99 export classification, matching the regulatory profile of the original TLC27L9CD.

Q8: What is the inventory status of substitute parts?

A: TLC27L9CDR has 1,228 pieces in stock. TS27L4AIDT has 1,844 pieces. TS27L4CDT has 30,200 pieces (highest availability). TS27L4IDT has 23,400 pieces. TS27M4CDT has 5,450 pieces. TS27M4IDT has 7,910 pieces. TS27L4CDT offers the highest inventory availability for immediate procurement.

Q9: Which substitute part has the widest operating temperature range?

A: TS27L4AIDT and TS27L4IDT both offer the widest operating temperature range of -40°C to 125°C, compared to the TLC27L9CD range of 0°C to 70°C. This extended range is beneficial for industrial and automotive applications requiring operation across extreme temperature conditions.

Q10: Should I validate circuits before switching from TLC27L9CD to a substitute part?

A: Circuit validation is required when switching to any substitute part with different electrical specifications. For TLC27L9CDR (identical specifications), validation is optional. For TS27L4 and TS27M4 series, validation is mandatory due to differences in slew rate, bandwidth, input offset voltage, and supply current. Validation should confirm that application performance requirements are met within the substitute part's electrical characteristics.