TLC27M4CD Equivalent & Substitute Parts

Part Overview

The TLC27M4CD is a general-purpose operational amplifier IC manufactured by Texas Instruments, featuring four independent amplifier circuits in a 14-SOIC surface-mount package. This LinCMOS™ series device operates across a 3V to 16V supply range and is designed for low-power analog signal processing applications.

The TLC27M4CD is designated as Last Time Buy, 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

TLC27M4CD

Texas InstrumentsIn Stock: 3092TLC27M4CD Datasheet

Current PartRFQ

TLC27M4CDR

Texas InstrumentsIn Stock: 54648TLC27M4CDR 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 TLC27M4CD is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Number of circuits: 4 independent amplifier channels
• Package type: 14-SOIC surface-mount configuration
• Supply voltage range: 3V to 16V minimum compatibility
• Mounting type: Surface mount
• RoHS3 compliance and MSL Level 1 rating

Secondary Compatibility Factors:

• Slew rate and gain bandwidth product (performance characteristics)
• Input bias current and input offset voltage (precision characteristics)
• Supply current and output current per channel (power consumption)
• Operating temperature range (functional range)

Substitute parts are grouped into two categories based on electrical performance alignment:

Category 1: Direct Packaging Substitutes (Identical Packaging)

• TLC27M4CDR: Identical electrical specifications, alternative packaging (Tape & Reel)

Category 2: Functional Equivalents (Different Electrical Performance)

• TS27L4AIDT, TS27L4CDT, TS27L4IDT: Lower slew rate (0.04V/µs) and gain bandwidth (100 kHz), reduced supply current (10µA), extended temperature range options
• TS27M4CDT, TS27M4IDT: Higher slew rate (0.6V/µs) and gain bandwidth (1 MHz), moderate supply current (150µA), extended temperature range options

All substitute parts maintain 14-SOIC packaging, 4-circuit configuration, 3V–16V supply compatibility, and RoHS3/MSL Level 1 compliance.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (No Design Changes Required):

TLC27M4CDR is the primary substitute for TLC27M4CD. Both parts are manufactured by Texas Instruments with identical electrical specifications (0.62V/µs slew rate, 525 kHz gain bandwidth product, 570µA supply current). The only difference is packaging format: TLC27M4CDR is supplied in Tape & Reel format versus Tube format for the original part. TLC27M4CDR maintains Active product status with significantly higher inventory availability (54,600 units), ensuring long-term supply continuity. Both parts are ROHS3 compliant with MSL Level 1 rating and operate across the identical 0°C–70°C temperature range.

For Performance-Optimized Substitution (Design Verification Required):

TS27M4CDT and TS27M4IDT offer higher performance characteristics with 0.6V/µs slew rate and 1 MHz gain bandwidth product, compared to the original 0.62V/µs and 525 kHz. These STMicroelectronics parts increase supply current to 150µA per four channels (versus 570µA for TLC27M4CD) and provide extended temperature operation to −40°C–125°C. TS27M4IDT additionally supports −40°C–125°C operation. Both maintain 14-SOIC packaging and 3V–16V supply compatibility.

TS27L4AIDT, TS27L4CDT, and TS27L4IDT provide ultra-low-power operation at 10µA supply current but with reduced performance (0.04V/µs slew rate, 100 kHz gain bandwidth). These are suitable only for applications where power consumption is the primary constraint and lower bandwidth is acceptable.

Compliance and Availability:

All substitute parts maintain ROHS3 compliance and MSL Level 1 rating. TLC27M4CDR and TS27M4CDT/TS27M4IDT are recommended for active designs due to Active product status and adequate inventory levels. TS27L4 variants are suitable for low-power applications with extended temperature requirements.

Frequently Asked Questions (FAQ)

Q1: Can TLC27M4CDR be used as a direct drop-in replacement for TLC27M4CD?

A: Yes. TLC27M4CDR is electrically identical to TLC27M4CD with matching slew rate (0.62V/µs), gain bandwidth product (525 kHz), supply current (570µA), and operating temperature range (0°C–70°C). The only difference is packaging format: TLC27M4CDR uses Tape & Reel format while TLC27M4CD uses Tube format. Both are 14-SOIC surface-mount packages with identical pinout and electrical performance. No circuit modifications are required.

Q2: What are the key differences between TS27M4CDT and TS27L4CDT?

A: Both are STMicroelectronics CMOS amplifiers in 14-SOIC packaging with 4 circuits. The primary differences are: TS27M4CDT has 0.6V/µs slew rate and 1 MHz gain bandwidth product with 150µA supply current, while TS27L4CDT has 0.04V/µs slew rate and 100 kHz gain bandwidth product with 10µA supply current. TS27M4CDT is suitable for higher-speed applications; TS27L4CDT is optimized for ultra-low-power operation. Both support 3V–16V supply and ROHS3 compliance.

Q3: Why does TLC27M4CD show Last Time Buy status?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of the TLC27M4CD. This designation signals the final opportunity to purchase existing inventory before the part becomes unavailable. Customers should transition to active alternatives such as TLC27M4CDR (identical specifications, active status) or TS27M4CDT/TS27M4IDT (higher performance, active status) to ensure long-term supply security.

Q4: Can TS27L4AIDT replace TLC27M4CD in all applications?

A: No. While TS27L4AIDT maintains 14-SOIC packaging, 4-circuit configuration, and 3V–16V supply compatibility, it has significantly reduced performance: 0.04V/µs slew rate (versus 0.62V/µs) and 100 kHz gain bandwidth product (versus 525 kHz). TS27L4AIDT is suitable only for low-speed, low-power applications where reduced bandwidth is acceptable. Applications requiring the original performance specifications must use TLC27M4CDR or TS27M4CDT/TS27M4IDT.

Q5: What is the difference between TS27M4CDT and TS27M4IDT?

A: Both parts are electrically identical with 0.6V/µs slew rate, 1 MHz gain bandwidth product, and 150µA supply current. The primary difference is operating temperature range: TS27M4CDT operates 0°C–70°C, while TS27M4IDT operates −40°C–125°C. TS27M4IDT is required for applications requiring extended low-temperature operation or industrial temperature specifications. Both use Cut Tape packaging with Digi-Reel® format availability.

Q6: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (TLC27M4CDR, TS27L4AIDT, TS27L4CDT, TS27L4IDT, TS27M4CDT, TS27M4IDT) are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating. All parts meet the same environmental and regulatory standards as the original TLC27M4CD.

Q7: Which substitute offers the best inventory availability?

A: TLC27M4CDR offers the highest inventory availability with 54,600 units in stock, compared to 3,000 units for the original TLC27M4CD. TS27L4CDT provides 30,200 units, and TS27M4CDT provides 5,450 units. For applications requiring immediate or large-volume procurement, TLC27M4CDR is the recommended choice.

Q8: Can I use TS27M4CDT in place of TLC27M4CD without circuit modifications?

A: TS27M4CDT can be used as a pin-compatible substitute in 14-SOIC packaging with 4 circuits and 3V–16V supply compatibility. However, circuit verification is recommended due to performance differences: TS27M4CDT has higher slew rate (0.6V/µs versus 0.62V/µs) and higher gain bandwidth product (1 MHz versus 525 kHz). These differences may affect circuit stability, frequency response, and noise characteristics in sensitive applications. Functional testing is advised before production deployment.