MAX6194BESA+ Equivalent & Substitute Parts

Part Overview

The MAX6194BESA+ is a series voltage reference IC manufactured by Analog Devices Inc./Maxim Integrated, delivering a fixed 4.5V output with ±0.11% tolerance. This precision reference is designed for applications requiring stable voltage references in power management circuits. The part is currently in active production status with 996 units in stock. Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter ranges while maintaining compatibility with the 8-SOIC surface mount package.

Substiute Parts

MAX6194BESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1022MAX6194BESA+ Datasheet

Current PartRFQ

MAX6194BESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1022MAX6194BESA+ Datasheet

DirectRFQ

LTC1798CS8-4.1#PBF

Analog Devices Inc.In Stock: 1238LTC1798CS8-4.1#PBF Datasheet

MFR RecommendedRFQ

LTC1798CS8-4.1#TRPBF

Analog Devices Inc.In Stock: 863LTC1798CS8-4.1#TRPBF Datasheet

MFR RecommendedRFQ

LTC1798CS8-5#PBF

Analog Devices Inc.In Stock: 2356LTC1798CS8-5#PBF Datasheet

MFR RecommendedRFQ

LTC1798CS8-5#TRPBF

Analog Devices Inc.In Stock: 2557LTC1798CS8-5#TRPBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MAX6194BESA+ are identified based on the following critical parameters:

• Package Compatibility: All substitutes must use the 8-SOIC surface mount package (0.154", 3.90mm Width)
• Reference Type: Series voltage reference topology
• Output Type: Fixed voltage output
• Manufacturer: Analog Devices Inc./Maxim Integrated or Analog Devices Inc.
• Product Status: Active production status
• Compliance: ROHS3 compliant with MSL 1 rating

The LTC1798 series parts (LTC1798CS8-4.1#PBF, LTC1798CS8-4.1#TRPBF, LTC1798CS8-5#PBF, LTC1798CS8-5#TRPBF) are qualified substitutes when output voltage requirements align with available fixed voltage options (4.096V or 5V). Packaging variants (#PBF for Tube, #TRPBF for Tape & Reel) are interchangeable based on procurement requirements.

Parameter Comparison

Engineering Selection Recommendations

Selection of substitute parts must account for the following engineering constraints:

Output Voltage Matching: The MAX6194BESA+ provides 4.5V output. LTC1798CS8-4.1 variants deliver 4.096V, and LTC1798CS8-5 variants deliver 5V. Circuit design must accommodate the voltage differential or require redesign of downstream voltage dividers and reference networks.

Tolerance and Stability: The MAX6194BESA+ offers superior tolerance (±0.11%) and lower temperature coefficient (10 ppm/°C) compared to LTC1798 substitutes (±0.15% tolerance, 40 ppm/°C). Applications requiring tighter voltage regulation should evaluate tolerance impact on system performance.

Operating Temperature Range: The MAX6194BESA+ operates across -40°C to 85°C, while LTC1798 variants are limited to 0°C to 70°C. Systems requiring extended low-temperature operation must retain the MAX6194BESA+.

Output Current Capability: LTC1798 substitutes provide 10 mA output current versus 500 µA for the MAX6194BESA+. Applications requiring higher load current benefit from LTC1798 selection.

Packaging Format: Both Tube (#PBF) and Tape & Reel (#TRPBF) formats are available for LTC1798 variants. Selection depends on assembly process requirements and procurement volume.

Compliance Status: All parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can LTC1798CS8-5#PBF directly replace MAX6194BESA+ in my circuit?

A: Direct replacement requires circuit validation. While both use the 8-SOIC package and share the same pinout topology, the output voltage differs (5V vs. 4.5V). Circuits designed for 4.5V reference may require adjustment of downstream components or voltage divider networks to function correctly with 5V output.

Q: What is the difference between #PBF and #TRPBF packaging designations?

A: #PBF indicates Tube packaging format, suitable for manual assembly or lower-volume production. #TRPBF indicates Tape & Reel format, optimized for automated pick-and-place assembly. Both contain identical die and electrical performance; selection depends on manufacturing process requirements.

Q: Why does the LTC1798 have higher output current capability than the MAX6194BESA+?

A: The LTC1798 series is designed for applications requiring higher load current (10 mA vs. 500 µA). This architectural difference reflects different design objectives. The MAX6194BESA+ prioritizes lower supply current consumption and tighter tolerance specifications.

Q: Are there temperature range limitations when substituting with LTC1798 variants?

A: Yes. LTC1798 variants operate only from 0°C to 70°C, compared to MAX6194BESA+ range of -40°C to 85°C. Applications requiring operation below 0°C or above 70°C must use the MAX6194BESA+ or identify alternative reference ICs with extended temperature specifications.

Q: How do tolerance specifications affect circuit performance?

A: The MAX6194BESA+ provides ±0.11% tolerance with 10 ppm/°C temperature coefficient, delivering superior voltage stability. LTC1798 variants offer ±0.15% tolerance with 40 ppm/°C coefficient. Precision analog circuits, data acquisition systems, and calibration references may require the tighter specifications of the MAX6194BESA+.

Q: Can I use LTC1798CS8-4.1 if my circuit requires 4.5V output?

A: LTC1798CS8-4.1 provides 4.096V output, a 0.404V difference from the required 4.5V. This substitution requires circuit redesign using external voltage dividers or alternative reference topologies to achieve the target 4.5V output level.