MAX178ACNG Equivalent & Substitute Parts

Part Overview

The MAX178ACNG is a 12-bit Analog-to-Digital Converter (ADC) manufactured by Analog Devices Inc./Maxim Integrated, designed for single-ended input data acquisition applications. It features a Successive Approximation Register (SAR) architecture with a 17 kSPS sampling rate and operates with external or internal voltage references. The device is packaged in a 24-pin DIP configuration suitable for through-hole mounting.

The MAX178ACNG is classified as obsolete. Finding equivalent substitute parts is necessary to support legacy system maintenance, design updates, and procurement continuity when original stock becomes unavailable.

Substiute Parts

MAX178ACNG

Analog Devices Inc./Maxim IntegratedIn Stock: 3455MAX178ACNG Datasheet

Current PartRFQ

MAX178ACNG+

Analog Devices Inc./Maxim IntegratedIn Stock: 2439MAX178ACNG+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX178ACNG is determined by strict equivalence across the following critical parameters:

• Resolution & Architecture: 12-bit SAR ADC
• Sampling Rate: 17 kSPS
• Input Configuration: Single-ended, 1 input
• Data Interface: Parallel output
• Reference Options: External and internal reference support
• Supply Voltage Compatibility: ±5V and 11.4V ~ 15.75V analog supply; 5V digital supply
• Package & Pinout: 24-DIP (0.300", 7.62mm) through-hole mounting
• Base Product Number: MAX178 series

The MAX178ACNG+ is identified as a direct substitute based on identical electrical specifications and pinout compatibility within the MAX178 product family.

Parameter Comparison

Engineering Selection Recommendations

The MAX178ACNG+ serves as the active production equivalent to the obsolete MAX178ACNG. Both devices share identical electrical and functional specifications, including resolution, sampling rate, input configuration, supply voltage requirements, and package pinout.

The primary differences are product lifecycle status and regulatory compliance. The MAX178ACNG+ is currently in active production status, ensuring long-term availability and supply chain continuity. The MAX178ACNG+ also meets ROHS3 compliance requirements, whereas the original MAX178ACNG is RoHS non-compliant.

Operating temperature range differs between the two variants: the MAX178ACNG operates from -40°C to 85°C, while the MAX178ACNG+ operates from 0°C to 70°C. Applications requiring extended low-temperature operation below 0°C must retain the original MAX178ACNG or evaluate alternative ADC solutions.

For applications within the 0°C to 70°C operating window, the MAX178ACNG+ is the recommended substitute, providing equivalent functionality with improved regulatory compliance and active manufacturer support.

Frequently Asked Questions (FAQ)

Q: Are the MAX178ACNG and MAX178ACNG+ pin-compatible?

A: Yes. Both devices use the 24-DIP (0.300", 7.62mm) package with identical pinout. Direct socket substitution is possible without PCB modification.

Q: What is the key difference between MAX178ACNG and MAX178ACNG+?

A: The MAX178ACNG+ is the active production variant of the MAX178 series. Electrical specifications are identical. The MAX178ACNG+ offers ROHS3 compliance and active manufacturer support. Operating temperature range differs: MAX178ACNG supports -40°C to 85°C; MAX178ACNG+ supports 0°C to 70°C.

Q: Can I use MAX178ACNG+ in applications requiring -40°C operation?

A: No. The MAX178ACNG+ operating temperature range is 0°C to 70°C. Applications requiring operation below 0°C must use the original MAX178ACNG or select an alternative ADC device rated for extended temperature ranges.

Q: Are there any functional differences in ADC performance between these parts?

A: No. Both devices provide identical 12-bit resolution, 17 kSPS sampling rate, single-ended input configuration, and parallel data interface. Functional performance is equivalent.

Q: What supply voltages do these devices require?

A: Both devices require ±5V and 11.4V to 15.75V for analog supply, and 5V for digital supply. Supply voltage requirements are identical between MAX178ACNG and MAX178ACNG+.

Q: Is the MAX178ACNG still available for purchase?

A: The MAX178ACNG is classified as obsolete. The MAX178ACNG+ is the active production substitute with current availability. Existing MAX178ACNG inventory may be available through authorized distributors, but long-term supply cannot be guaranteed.