AT24CS16-MAHM-E Equivalent & Substitute Parts

Part Overview

The AT24CS16-MAHM-E is a 16Kbit I2C EEPROM memory IC manufactured by Microchip Technology, supplied in 8-UDFN (2x3) package format via Tape & Reel. This non-volatile memory device operates at 1 MHz clock frequency with 550 ns access time and supports supply voltages from 1.7V to 5.5V across the industrial temperature range of -40°C to 85°C. The part is ROHS3 compliant and carries an active product status. Equivalent and substitute parts are identified based on matching memory capacity, interface protocol, package compatibility, and electrical operating parameters to ensure functional interchangeability in circuit applications.

Substiute Parts

AT24CS16-MAHM-E

Microchip TechnologyIn Stock: 1073AT24CS16-MAHM-E Datasheet

Current PartRFQ

AT24C16C-MAHM-E

Microchip TechnologyIn Stock: 15165AT24C16C-MAHM-E Datasheet

Parametric EquivalentRFQ

AT24C16C-MAHM-T

Microchip TechnologyIn Stock: 3994AT24C16C-MAHM-T Datasheet

Parametric EquivalentRFQ

BR24G16NUX-3ATTR

Rohm SemiconductorIn Stock: 4970BR24G16NUX-3ATTR Datasheet

MFR RecommendedRFQ

BR24G16NUX-3TTR

Rohm SemiconductorIn Stock: 16951BR24G16NUX-3TTR Datasheet

MFR RecommendedRFQ

BR24T16NUX-WTR

Rohm SemiconductorIn Stock: 1735BR24T16NUX-WTR Datasheet

MFR RecommendedRFQ

CAT24C16HU4I-GT3

onsemiIn Stock: 53189CAT24C16HU4I-GT3 Datasheet

MFR RecommendedRFQ

M24C16-FMC6TG

STMicroelectronicsIn Stock: 18267M24C16-FMC6TG Datasheet

MFR RecommendedRFQ

M24C16-RMC6TG

STMicroelectronicsIn Stock: 30410M24C16-RMC6TG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AT24CS16-MAHM-E are qualified based on the following critical parameters:

• Memory capacity of 16Kbit with 2K x 8 organization
• I2C serial interface protocol
• 8-pin surface mount package (8-UDFN or equivalent VSON format)
• Supply voltage range compatibility (minimum 1.7V or lower)
• Operating temperature range of -40°C to 85°C
• Write cycle time of 5ms
• ROHS3 compliance and active product status

Substitutes are grouped into two categories: Parametric Equivalents (identical electrical and mechanical specifications) and Manufacturer Recommended alternatives (functionally compatible with minor parameter variations such as clock frequency or access time).

Parameter Comparison

Engineering Selection Recommendations

Selection of substitute parts should be based on the following criteria derived from product specifications and compliance status:

Parametric Equivalents (Direct Substitutes): AT24C16C-MAHM-E and AT24C16C-MAHM-T are parametric equivalents from Microchip Technology with identical memory capacity, interface, clock frequency, and package format. Both maintain ROHS3 compliance and active product status. AT24C16C-MAHM-T offers improved moisture sensitivity (MSL 1 Unlimited versus MSL 3), making it suitable for applications with extended storage or high-humidity environments.

Manufacturer Recommended Alternatives: BR24G16NUX-3ATTR and BR24G16NUX-3TTR from Rohm Semiconductor provide 16Kbit I2C EEPROM functionality in VSON008X2030 package with lower minimum supply voltage (1.6V). BR24G16NUX-3ATTR operates at 1 MHz matching the primary part's clock frequency. BR24G16NUX-3TTR operates at 400 kHz and is suitable for applications where lower clock speed is acceptable.

CAT24C16HU4I-GT3 from onsemi and M24C16-FMC6TG/M24C16-RMC6TG from STMicroelectronics operate at 400 kHz with 900 ns access time. These parts are compatible with the AT24CS16-MAHM-E in applications where reduced clock frequency does not impact system performance. All substitute parts maintain ROHS3 compliance and active product status.

Frequently Asked Questions (FAQ)

Q: Can AT24C16C-MAHM-E directly replace AT24CS16-MAHM-E? A: Yes. Both parts share identical memory capacity (16Kbit), interface (I2C), clock frequency (1 MHz), access time (550 ns), supply voltage range (1.7V ~ 5.5V), package format (8-UDFN 2x3), and operating temperature range (-40°C ~ 85°C). The primary difference is packaging format (Cut Tape & Digi-Reel versus Tape & Reel), which does not affect functional compatibility.

Q: What is the difference between Microchip AT24C16C variants? A: AT24C16C-MAHM-E and AT24C16C-MAHM-T are electrically identical with the same memory specifications and clock frequency. The distinction is moisture sensitivity level: AT24C16C-MAHM-E has MSL 3 (168 hours), while AT24C16C-MAHM-T has MSL 1 (Unlimited). MSL 1 rating is preferable for applications with extended storage periods or exposure to high humidity.

Q: Can Rohm BR24G16 parts substitute for Microchip AT24CS16? A: BR24G16NUX-3ATTR operates at 1 MHz and is functionally compatible. BR24G16NUX-3TTR and BR24T16NUX-WTR operate at 400 kHz. All three maintain 16Kbit capacity, I2C interface, 5ms write cycle time, and -40°C to 85°C operating range. The VSON008X2030 package is mechanically compatible with 8-UDFN format. Lower minimum supply voltage (1.6V) provides additional design margin.

Q: Are STMicroelectronics M24C16 parts compatible? A: M24C16-FMC6TG and M24C16-RMC6TG are compatible substitutes with 16Kbit capacity and I2C interface. Both operate at 400 kHz (lower than the primary part's 1 MHz) with 900 ns access time. M24C16-FMC6TG supports 1.7V minimum supply, while M24C16-RMC6TG requires 1.8V minimum. Package format is 8-UFDFPN (2x3), mechanically equivalent to 8-UDFN.

Q: What is the significance of clock frequency differences? A: The AT24CS16-MAHM-E operates at 1 MHz, while several substitutes operate at 400 kHz. Lower clock frequency reduces data transfer rate but maintains full functional compatibility. Selection depends on system timing requirements. If the application requires 1 MHz operation, AT24C16C variants or BR24G16NUX-3ATTR are preferred.

Q: How do package format variations affect substitution? A: The primary part uses 8-UDFN (2x3) package. Substitutes use 8-UDFN-EP, 8-UFDFPN, or VSON008X2030 formats. All are 8-pin surface mount packages with identical pin pitch and exposed pad design, ensuring mechanical and electrical compatibility on PCB layouts designed for 8-UDFN footprints.