TLC254CNG4 Equivalent & Substitute Parts

Part Overview

The TLC254CNG4 is a CMOS amplifier integrated circuit containing four independent operational amplifier circuits with open drain output configuration. This device is packaged in a 14-pin DIP (Dual In-line Package) format and operates across a wide supply voltage range of 1.4 V to 16 V. The TLC254CNG4 is classified as discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design requirements and production continuity.

Substiute Parts

TLC254CNG4

Texas InstrumentsIn Stock: 979TLC254CNG4 Datasheet

Current PartRFQ

TLV9154IDR

Texas InstrumentsIn Stock: 15932TLV9154IDR Datasheet

MFR RecommendedRFQ

TLC254CN

Texas InstrumentsIn Stock: 2337TLC254CN Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLC254CNG4 is determined by the following critical parameters:

Functional Equivalence Criteria:

• Number of circuits: 4 independent amplifier channels
• Supply voltage compatibility: Minimum 1.4 V to maximum 16 V operating range
• Package compatibility: 14-pin configuration
• Amplifier classification: CMOS or general-purpose operational amplifier technology

Identified Substitute Categories:

1. Direct Package Equivalent (Through-Hole DIP): The TLC254CN maintains identical electrical specifications, circuit count, output type, and through-hole DIP packaging. This substitute is functionally equivalent with no design modifications required.

2. Functional Equivalent with Package Variation (Surface Mount SOIC): The TLV9154IDR provides four independent amplifier circuits within the specified supply voltage range but utilizes surface mount technology (14-SOIC package) and rail-to-rail output configuration instead of open drain. This substitute requires PCB layout redesign and may require circuit topology adjustments due to output type differences.

Parameter Comparison

Engineering Selection Recommendations

TLC254CN Selection Rationale:

The TLC254CN is the primary substitute for the TLC254CNG4. Both devices share identical electrical specifications, circuit architecture, and through-hole DIP packaging. The TLC254CN maintains CMOS amplifier topology with open drain output configuration, ensuring direct functional compatibility. The primary distinction is product status: TLC254CN is designated as Last Time Buy, indicating limited availability but continued manufacturability. This substitute requires no circuit redesign and maintains full electrical and mechanical compatibility with existing designs.

TLV9154IDR Selection Rationale:

The TLV9154IDR serves as a functional alternative when surface mount technology is acceptable or preferred. This device provides four independent amplifier circuits within the overlapping supply voltage range (2.7 V to 16 V). The TLV9154IDR offers enhanced performance characteristics including higher slew rate (20 V/µs versus 4.5 V/µs), increased gain bandwidth product (4.5 MHz versus 2.2 MHz), and lower supply current (560 µA versus 2.7 mA per channel). The TLV9154IDR features rail-to-rail output configuration rather than open drain, requiring circuit topology evaluation. The device is currently in active production status, ensuring long-term availability. Implementation requires PCB redesign for surface mount assembly and potential circuit modifications to accommodate output type differences.

Frequently Asked Questions (FAQ)

Q: Can the TLC254CN be used as a direct replacement for the TLC254CNG4?

A: Yes. The TLC254CN is electrically and mechanically equivalent to the TLC254CNG4. Both devices contain four CMOS amplifier circuits with open drain outputs in 14-DIP through-hole packaging. No circuit modifications are required for substitution.

Q: What are the key differences between the TLC254CNG4 and TLV9154IDR?

A: The primary differences are packaging technology and output configuration. The TLC254CNG4 uses through-hole DIP packaging with open drain outputs, while the TLV9154IDR uses surface mount SOIC packaging with rail-to-rail outputs. The TLV9154IDR also provides superior performance metrics: higher slew rate, increased bandwidth, and lower supply current. The TLV9154IDR requires minimum supply voltage of 2.7 V compared to 1.4 V for the TLC254CNG4.

Q: Is the TLV9154IDR suitable for designs requiring open drain output?

A: No. The TLV9154IDR features rail-to-rail output configuration, which differs fundamentally from the open drain output of the TLC254CNG4. Designs dependent on open drain output characteristics require the TLC254CN or equivalent open drain devices.

Q: What is the supply current difference between these devices?

A: The TLC254CNG4 and TLC254CN consume 2.7 mA per channel (10.8 mA total for four channels). The TLV9154IDR consumes 560 µA per channel (2.24 mA total for four channels), representing approximately 79% lower supply current consumption.

Q: Are all three devices RoHS compliant?

A: Yes. The TLC254CNG4, TLC254CN, and TLV9154IDR are all ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements.

Q: What is the operating temperature range for each device?

A: The TLC254CNG4 and TLC254CN operate from 0°C to 70°C. The TLV9154IDR operates from -40°C to 125°C, providing extended temperature range capability suitable for industrial and automotive applications.

Q: Can the TLC254CNG4 operate at 2.7 V supply voltage?

A: No. The TLC254CNG4 requires minimum supply voltage of 1.4 V. The TLV9154IDR requires minimum supply voltage of 2.7 V. Designs operating at 1.4 V to 2.6 V supply voltage must use the TLC254CNG4 or TLC254CN.

Q: What packaging considerations apply to the TLV9154IDR?

A: The TLV9154IDR is supplied in 14-SOIC surface mount package (0.154" width, 3.90 mm). Implementation requires surface mount assembly capability and PCB redesign. The device is available in Cut Tape and Digi-Reel packaging formats.