TLC4502ACDRG4 Equivalent & Substitute Parts

Part Overview

The TLC4502ACDRG4 is a CMOS dual-channel amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This device features rail-to-rail output capability and is designed for general-purpose analog signal conditioning applications. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines. Substitute parts must maintain compatibility with the 8-SOIC package format and support the electrical operating parameters of the original design.

Substiute Parts

TLC4502ACDRG4

Texas InstrumentsIn Stock: 881TLC4502ACDRG4 Datasheet

Current PartRFQ

MAX4252ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 2003MAX4252ESA+ Datasheet

MFR RecommendedRFQ

MAX4257ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 2078MAX4257ESA+ Datasheet

MFR RecommendedRFQ

MAX4282ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1343MAX4282ESA+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLC4502ACDRG4 is determined by the following mandatory compatibility criteria:

Package Compatibility: All substitute parts must use the 8-SOIC (0.154", 3.90mm Width) surface mount package to ensure direct PCB footprint compatibility.

Dual-Channel Configuration: Substitute parts must contain exactly 2 amplifier circuits to match the original dual-channel architecture.

Rail-to-Rail Output: The output stage must support rail-to-rail operation to maintain signal swing capability within the supply voltage range.

Supply Voltage Range: Substitute parts must operate within or encompass the 4V to 6V supply span of the original design. Parts with wider supply ranges (2.4V to 5.5V) remain compatible as they support the required operating window.

Electrical Performance Envelope: Substitute parts must not introduce incompatibilities in slew rate, gain bandwidth product, or output current that would prevent functional replacement in typical applications.

The three identified substitute parts—MAX4252ESA+, MAX4257ESA+, and MAX4282ESA+—all meet these mandatory criteria and are manufactured by Analog Devices Inc./Maxim Integrated with active product status.

Parameter Comparison

Engineering Selection Recommendations

MAX4257ESA+ Selection Criteria: The MAX4257ESA+ is the preferred substitute when the original design requires slew rate performance closest to the TLC4502ACDRG4. With a slew rate of 2.1 V/µs and gain bandwidth product of 22 MHz, this device provides superior frequency response characteristics. The MAX4257ESA+ is manufactured by Analog Devices Inc./Maxim Integrated with active product status, ensuring long-term availability. ROHS3 compliance and MSL 1 rating match the original part specifications. This substitute is suitable for applications requiring dynamic signal processing with moderate to high bandwidth requirements.

MAX4282ESA+ Selection Criteria: The MAX4282ESA+ is designated as part of the GainAmp™ series and offers the lowest supply current consumption at 0.32 mA per dual-channel configuration. This substitute is appropriate for power-constrained applications where the original 2.5 mA supply current is excessive. The MAX4282ESA+ maintains rail-to-rail output capability and is ROHS3 compliant with active product status. The lower slew rate of 0.7 V/µs and reduced gain bandwidth product of 2 MHz indicate suitability for lower-frequency signal conditioning applications.

MAX4252ESA+ Selection Criteria: The MAX4252ESA+ provides a balanced alternative with moderate slew rate (0.3 V/µs) and gain bandwidth product (3 MHz). This device features push-pull output configuration in addition to rail-to-rail capability, offering enhanced output drive capability at 68 mA per channel. The MAX4252ESA+ is appropriate for general-purpose applications where the original performance envelope is not critical and cost optimization is a secondary consideration.

Compliance and Availability: All three substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with modern manufacturing and storage requirements. All substitutes are currently active products with documented inventory availability, eliminating obsolescence risk associated with the discontinued TLC4502ACDRG4.

Frequently Asked Questions (FAQ)

Q: Can the MAX4257ESA+ directly replace the TLC4502ACDRG4 without circuit modification?

A: The MAX4257ESA+ shares the 8-SOIC package footprint and dual-channel configuration, enabling direct PCB placement. However, the device operates with a minimum supply voltage of 2.4V compared to the TLC4502ACDRG4 minimum of 4V. Designs operating at the lower supply voltage range (2.4V to 4V) require verification that the original circuit does not depend on the 4V minimum specification. The superior slew rate (2.1 V/µs vs. 2.5 V/µs) and higher gain bandwidth product (22 MHz vs. 4.7 MHz) are generally compatible with applications designed for the original part.

Q: What is the primary difference between the MAX4252ESA+ and MAX4257ESA+?

A: The MAX4252ESA+ and MAX4257ESA+ differ primarily in slew rate and gain bandwidth product. The MAX4257ESA+ provides 2.1 V/µs slew rate and 22 MHz bandwidth, while the MAX4252ESA+ offers 0.3 V/µs slew rate and 3 MHz bandwidth. Both devices feature push-pull, rail-to-rail output stages. Applications requiring higher-frequency signal processing should select the MAX4257ESA+. Applications with lower bandwidth requirements may use the MAX4252ESA+ for cost optimization.

Q: Is the MAX4282ESA+ suitable for high-speed signal conditioning?

A: The MAX4282ESA+ is not optimized for high-speed applications. With a slew rate of 0.7 V/µs and gain bandwidth product of 2 MHz, this device is designed for low-frequency signal conditioning and precision measurement applications. The GainAmp™ series designation indicates optimization for gain accuracy and low-noise performance rather than bandwidth. Applications requiring the original TLC4502ACDRG4 slew rate of 2.5 V/µs should select the MAX4257ESA+ instead.

Q: Are all substitute parts available in the same packaging format?

A: Yes. The TLC4502ACDRG4, MAX4252ESA+, MAX4257ESA+, and MAX4282ESA+ are all housed in 8-SOIC (0.154", 3.90mm Width) surface mount packages. This standardized package ensures PCB footprint compatibility and eliminates the need for layout redesign during component substitution.

Q: What supply voltage range should be used when substituting with MAX4252ESA+ or MAX4257ESA+?

A: The MAX4252ESA+ and MAX4257ESA+ operate across a 2.4V to 5.5V supply range, which encompasses the original TLC4502ACDRG4 range of 4V to 6V. Designs operating at 4V to 5.5V are fully compatible. Designs requiring operation above 5.5V are not compatible with these substitutes. The MAX4282ESA+ operates across 2.5V to 5.5V, also compatible with the original 4V to 6V range within the 4V to 5.5V overlap window.

Q: Do the substitute parts maintain the same output current capability?

A: The substitute parts provide equal or superior output current capability. The TLC4502ACDRG4 provides 50 mA per channel. The MAX4252ESA+ and MAX4257ESA+ each provide 68 mA per channel, while the MAX4282ESA+ provides 65 mA per channel. All substitutes can deliver higher output current than the original part, ensuring compatibility with existing load requirements.

Q: Are there temperature range considerations when selecting a substitute?

A: The TLC4502ACDRG4 operates across 0°C to 70°C. All three substitute parts operate across -40°C to 85°C, providing extended temperature range capability. Designs operating within the original 0°C to 70°C window are fully compatible. Applications requiring operation below 0°C or above 70°C benefit from the extended range of the substitute parts.