ICL7642CCPD+ Equivalent & Substitute Parts

Part Overview

The ICL7642CCPD+ is a CMOS amplifier integrated circuit manufactured by Analog Devices Inc./Maxim Integrated, featuring four independent rail-to-rail output circuits in a 14-pin DIP package. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The ICL7642CCPD+ operates across a wide supply voltage range of 2V to 16V with extremely low input bias current of 1 pA, making it suitable for precision analog signal conditioning applications requiring minimal loading effects.

Substiute Parts

ICL7642CCPD+

Analog Devices Inc./Maxim IntegratedIn Stock: 1353ICL7642CCPD+ Datasheet

Current PartRFQ

ICL7642CCPD+

Analog Devices Inc./Maxim IntegratedIn Stock: 1353ICL7642CCPD+ Datasheet

DirectRFQ

TLC2274CN

Texas InstrumentsIn Stock: 8941TLC2274CN Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ICL7642CCPD+ is determined by strict alignment of the following critical parameters:

Package and Pinout Compatibility: The substitute must use the 14-DIP (0.300", 7.62mm) through-hole package with identical pin configuration to ensure direct board-level replacement without layout modifications.

Circuit Configuration: The substitute must provide four independent amplifier circuits to match the quad-channel architecture of the ICL7642CCPD+.

Output Characteristics: Rail-to-rail output capability is required to maintain signal swing performance across the specified supply voltage range.

Supply Voltage Range: The substitute must operate across the minimum 2V to maximum 16V supply span to ensure compatibility with existing power distribution designs.

Input Bias Current: The substitute must maintain input bias current at or below 1 pA to preserve the high-impedance input characteristics essential for precision measurement applications.

Operating Temperature Range: The substitute must support the 0°C to 70°C operating temperature specification.

Regulatory Compliance: The substitute must maintain ROHS3 compliance and REACH unaffected status to satisfy procurement and environmental requirements.

The TLC2274CN from Texas Instruments meets all mandatory substitution criteria while offering enhanced performance characteristics in specific parameters.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution Feasibility: The TLC2274CN is a direct functional substitute for the ICL7642CCPD+ based on package compatibility, circuit count, and core electrical specifications. Both devices share identical 14-DIP through-hole packaging, four-channel architecture, rail-to-rail output capability, and matching input bias current characteristics.

Product Status Advantage: The TLC2274CN holds active product status from Texas Instruments, ensuring continued availability and manufacturing support. The ICL7642CCPD+ is classified as obsolete, making the TLC2274CN the preferred choice for new designs and long-term system sustainability.

Compliance Alignment: Both components maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for procurement and environmental standards.

Performance Considerations: The TLC2274CN demonstrates superior performance in slew rate (3.6V/µs versus 1.6V/µs), gain bandwidth product (2.25 MHz versus 1.4 MHz), and input offset voltage (0.3 mV versus 10 mV). These enhancements provide improved signal fidelity and faster transient response.

Supply Voltage Constraint: The TLC2274CN minimum supply voltage is 4.4V compared to the ICL7642CCPD+ minimum of 2V. Applications requiring operation below 4.4V supply voltage cannot use the TLC2274CN as a substitute.

Power Consumption Trade-off: The TLC2274CN draws 4.8 mA total supply current versus 1 mA for the ICL7642CCPD+. Power-sensitive applications must account for this increased current draw.

Frequently Asked Questions (FAQ)

Q: Can the TLC2274CN replace the ICL7642CCPD+ in all applications?

A: The TLC2274CN is a direct substitute for applications operating at supply voltages of 4.4V or higher. Applications requiring operation below 4.4V supply voltage must retain the ICL7642CCPD+ or identify alternative components supporting lower supply voltages.

Q: What is the primary reason for seeking substitutes for the ICL7642CCPD+?

A: The ICL7642CCPD+ is classified as obsolete. The TLC2274CN provides an active, currently manufactured alternative with identical package and pinout, ensuring long-term component availability and design continuity.

Q: Are there pinout differences between the ICL7642CCPD+ and TLC2274CN?

A: No. Both devices use the 14-DIP (0.300", 7.62mm) through-hole package with identical pin assignments, enabling direct board-level substitution without layout modifications.

Q: How do the performance characteristics differ between these devices?

A: The TLC2274CN offers higher slew rate (3.6V/µs versus 1.6V/µs), greater gain bandwidth product (2.25 MHz versus 1.4 MHz), and lower input offset voltage (0.3 mV versus 10 mV). The ICL7642CCPD+ provides lower supply current (1 mA versus 4.8 mA) and lower minimum supply voltage (2V versus 4.4V).

Q: What compliance certifications apply to both devices?

A: Both the ICL7642CCPD+ and TLC2274CN are ROHS3 compliant and REACH unaffected, satisfying standard procurement and environmental compliance requirements.

Q: Is the input bias current specification identical between both devices?

A: Yes. Both devices specify 1 pA input bias current, maintaining compatibility for high-impedance input applications.

Q: What mounting considerations apply to substitution?

A: Both devices use through-hole mounting in 14-DIP packages. No modifications to PCB footprints or assembly processes are required for substitution, provided supply voltage requirements are met.