MAX908CPD Equivalent & Substitute Parts

Part Overview

The MAX908CPD is a general-purpose comparator IC manufactured by Analog Devices Inc./Maxim Integrated, featuring four independent comparator elements in a 14-pin DIP package. This device is designed for TTL-compatible output applications with supply voltage range of 4.5V to 11V. The MAX908CPD is classified as obsolete, which necessitates identification of functionally equivalent alternatives for new designs or component replenishment in legacy systems.

Substiute Parts

MAX908CPD

Analog Devices Inc./Maxim IntegratedIn Stock: 2303MAX908CPD Datasheet

Current PartRFQ

MAX908CPD+

Analog Devices Inc./Maxim IntegratedIn Stock: 1207MAX908CPD+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX908CPD is determined by strict equivalence across the following critical parameters:

• Number of comparator elements: 4
• Output type: TTL
• Supply voltage range: 4.5V ~ 11V
• Input offset voltage: 2mV @ 5V
• Input bias current: 0.3µA @ 5V
• Quiescent current: 1mA maximum
• CMRR and PSRR: 86.02dB
• Propagation delay: 50ns maximum
• Package type: 14-DIP through-hole
• Operating temperature range: 0°C ~ 70°C

The MAX908CPD+ meets all electrical and mechanical specifications identical to the main part, with the primary distinction being product status and RoHS compliance classification.

Parameter Comparison

Engineering Selection Recommendations

The MAX908CPD+ is the direct functional equivalent of the MAX908CPD, with identical electrical specifications and mechanical package configuration. The primary differentiators are product status and regulatory compliance:

• The MAX908CPD is classified as obsolete, limiting availability for new procurement.
• The MAX908CPD+ maintains active product status with ROHS3 compliance, meeting current regulatory requirements for new designs and manufacturing environments subject to RoHS directives.
• Both parts are manufactured by the same supplier and share the same base product number (MAX908), ensuring design compatibility.
• The MAX908CPD+ is supplied in tube packaging, whereas the original part packaging is unspecified.

Selection of MAX908CPD+ is appropriate for applications requiring RoHS compliance or where long-term component availability is a consideration.

Frequently Asked Questions (FAQ)

Q: Are MAX908CPD and MAX908CPD+ electrically interchangeable?

A: Yes. Both parts feature identical electrical specifications including supply voltage range (4.5V ~ 11V), input offset voltage (2mV @ 5V), input bias current (0.3µA @ 5V), quiescent current (1mA), CMRR/PSRR (86.02dB), and propagation delay (50ns maximum).

Q: What is the difference between MAX908CPD and MAX908CPD+?

A: The MAX908CPD+ is the active production variant with ROHS3 compliance. The original MAX908CPD is obsolete and RoHS non-compliant. Electrical and mechanical specifications are identical.

Q: Can MAX908CPD+ be used as a direct replacement in existing designs?

A: Yes. The MAX908CPD+ maintains the same 14-DIP through-hole package, pin configuration, and electrical performance, enabling direct substitution in legacy circuit designs.

Q: Are there packaging differences between these parts?

A: The MAX908CPD+ is supplied in tube packaging. The original MAX908CPD packaging specification is not defined in the available data.

Q: Which part should be selected for new designs?

A: The MAX908CPD+ should be selected for new designs due to active product status and ROHS3 compliance certification.