MAX903ESA-T Equivalent & Substitute Parts

Part Overview

The MAX903ESA-T is a single-element comparator with integrated latch functionality, designed for TTL-compatible applications. This device operates across a supply voltage range of 5V to 10V (single supply) or ±2.5V to ±5V (dual supply), making it suitable for precision voltage comparison and signal conditioning tasks. The part is classified as obsolete, necessitating identification of active equivalent alternatives to ensure design continuity and procurement availability for new production runs and system maintenance.

Substiute Parts

MAX903ESA-T

Analog Devices Inc./Maxim IntegratedIn Stock: 1168MAX903ESA-T Datasheet

Current PartRFQ

MAX903ESA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 19053MAX903ESA+T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX903ESA-T is determined by strict equivalence across the following critical parameters:

• Functional Type: Single-element comparator with integrated latch
• Output Interface: TTL-compatible output
• Supply Voltage Range: 5V ~ 10V (single supply) and ±2.5V ~ ±5V (dual supply)
• Input Offset Voltage: 4mV maximum at ±5V
• Input Bias Current: 10µA maximum at ±5V
• Quiescent Current: 4mA, 3mA, 1.5mA specifications
• Common-Mode Rejection Ratio (CMRR): 82.5dB typical
• Power Supply Rejection Ratio (PSRR): 80dB typical
• Operating Temperature Range: -40°C to 85°C
• Package: 8-SOIC surface mount
• Regulatory Compliance: ROHS3 compliant, REACH unaffected

The MAX903ESA+T qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction is packaging format: the original part uses tube packaging, while the substitute uses Tape & Reel (TR) format. Both maintain the same 8-SOIC footprint and electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The MAX903ESA+T is the direct functional and electrical equivalent of the MAX903ESA-T. Both parts share identical electrical specifications, operating parameters, and the same 8-SOIC package footprint. The MAX903ESA+T is currently in active production status, whereas the original MAX903ESA-T is obsolete.

For new designs and production procurement, the MAX903ESA+T is the appropriate selection. The packaging format difference (Tape & Reel versus tube) does not affect electrical performance or PCB assembly compatibility. Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for industrial and commercial applications.

The MAX903ESA+T offers superior procurement availability with 18,968 pieces in stock compared to the obsolete part's limited inventory, ensuring supply chain continuity for manufacturing operations.

Frequently Asked Questions (FAQ)

Q: Can the MAX903ESA+T be used as a direct replacement for the MAX903ESA-T in existing designs?

A: Yes. The MAX903ESA+T is electrically and functionally identical to the MAX903ESA-T. Both devices feature the same 8-SOIC package footprint, identical pin configuration, and matching electrical specifications. No circuit modifications are required.

Q: What is the difference between the MAX903ESA-T and MAX903ESA+T?

A: The primary difference is packaging format. The MAX903ESA-T uses tube packaging, while the MAX903ESA+T uses Tape & Reel (TR) format. This distinction affects procurement and handling but does not impact electrical performance or PCB assembly compatibility.

Q: Why is the MAX903ESA-T listed as obsolete?

A: The MAX903ESA-T has been discontinued by the manufacturer. The MAX903ESA+T remains in active production and serves as the current equivalent part for this comparator with latch function.

Q: Are there any compliance or certification differences between these parts?

A: No. Both the MAX903ESA-T and MAX903ESA+T maintain identical ROHS3 compliance and REACH unaffected status. Regulatory certifications and environmental compliance are equivalent.

Q: What is the 8-SOIC package specification?

A: The 8-SOIC (Small Outline Integrated Circuit) package measures 0.154 inches (3.90mm) in width and contains 8 pins. This is a standard surface mount package suitable for automated PCB assembly processes.

Q: Can the MAX903ESA+T handle the same supply voltage range as the original part?

A: Yes. The MAX903ESA+T operates across the identical supply voltage range: 5V to 10V for single supply operation, and ±2.5V to ±5V for dual supply operation.