MAX908CPD+ Equivalent & Substitute Parts

Part Overview

The MAX908CPD+ is a general-purpose comparator integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. This 4-element TTL output comparator operates across a supply voltage range of 4.5V to 11V and is housed in a 14-pin DIP package suitable for through-hole mounting applications. The device is currently in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating. Alternative part sourcing becomes necessary due to inventory constraints, supply chain disruptions, or procurement preferences across different regional suppliers.

Substiute Parts

MAX908CPD+

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

Current PartRFQ

MAX908CPD+

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

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX908CPD+ is determined by strict equivalence across the following critical parameters:

Functional Parameters: Number of elements (4), output type (TTL), and general-purpose comparator classification ensure functional compatibility within the application circuit.

Electrical Parameters: 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) define the electrical performance envelope.

Physical Parameters: 14-pin DIP package with 0.300" (7.62mm) pitch and through-hole mounting type ensure mechanical and board-level compatibility.

Compliance Parameters: RoHS3 compliance and MSL Level 1 rating establish regulatory and environmental handling requirements.

Only parts matching all specified parameters across these categories qualify as direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

The MAX908CPD+ maintains active product status with full RoHS3 compliance and unlimited moisture sensitivity rating, confirming its suitability for current design implementations. Selection of substitute parts must maintain identical electrical specifications, package configuration, and compliance certifications to ensure circuit performance and regulatory adherence. The 14-DIP through-hole package format permits direct board-level replacement without layout modifications. Verification of supplier device package designation (14-PDIP) confirms compatibility with existing PCB footprints and assembly processes.

Frequently Asked Questions (FAQ)

Q: What determines if a part can substitute for the MAX908CPD+?

A: Direct substitution requires matching all electrical parameters (supply voltage, input offset, bias current, quiescent current, CMRR/PSRR, propagation delay), functional specifications (4-element TTL comparator), physical package (14-DIP, 0.300" pitch), and compliance certifications (RoHS3, MSL Level 1).

Q: Can parts with different package types replace the MAX908CPD+?

A: No. The 14-DIP through-hole package is a critical specification. Alternative package types (surface-mount variants, different pin counts) are not compatible without PCB redesign and layout modifications.

Q: Is the operating temperature range a substitution criterion?

A: Yes. The 0°C to 70°C operating temperature range is a specified parameter. Parts with different temperature ratings do not qualify as direct substitutes.

Q: What is the significance of RoHS3 compliance for substitution?

A: RoHS3 compliance is a regulatory requirement for many applications. Substitute parts must maintain this certification to ensure compliance with environmental and procurement standards.

Q: Does propagation delay affect substitution eligibility?

A: Yes. The 50ns maximum propagation delay is a critical timing specification. Parts with different propagation delay characteristics alter circuit timing behavior and are not acceptable substitutes.

Q: Can I use a substitute part with higher quiescent current?

A: No. The 1mA maximum quiescent current is a specified electrical parameter. Higher quiescent current increases power consumption and may violate circuit design constraints.