25LC1024T-E/SM vs 25LC160D-E/SN16KVAO

Dieser detaillierte Vergleich von 25LC1024T-E/SM und 25LC160D-E/SN16KVAO bietet wertvolle Einblicke in deren Spezifikationen und Hauptmerkmale. Wir gehen ausführlich auf wichtige Faktoren ein, darunter RoHS-Konformität, REACH-Status, Serie, Montageart, Gehäusetyp und weitere relevante Eigenschaften. Die übersichtliche Darstellung der Unterschiede vereinfacht die Komponentenauswahl und erleichtert Ihnen die Wahl der optimalen Lösung für Ihre Anwendung.

Technical review by ETEI Component Engineering Source: manufacturer documentation

Replacement verdict

Not a drop-in replacement

The 25LC1024T-E/SM and 25LC160D-E/SN16KVAO are not functionally interchangeable. The 25LC1024T-E/SM provides 1 Mbit of SPI serial EEPROM in an 8-lead SOIC package, while the 25LC160D-E/SN16KVAO provides only 16 Kbit in a 16-lead SOIC package with an automotive qualification. The tenfold difference in memory density, the different page and sector architecture, and the incompatible package footprint prevent direct substitution without a complete board and firmware redesign.

Different memory density Different page size Different package footprint Different qualification grade

Parts at a glance

Key differences

Rows are prioritized by design impact. Highlighted values require attention during substitution.

Key electrical and mechanical differences between the two devices

Parameter 25LC1024T-E/SM 25LC160D-E/SN16KVAO Why it matters
Memory Density 1 Mbit 16 Kbit Density determines total storage capacity; a 1 Mbit device stores 64 times more data than a 16 Kbit device, so they are not functionally interchangeable for firmware or data-logging needs.
Memory Organization 128K x 8 2K x 8 Byte-wide organization affects addressing and the number of address bytes required per transaction, influencing software compatibility.
Maximum Clock Frequency 10 MHz 10 MHz Clock rate sets the maximum SPI throughput; matching speeds ensures the host controller timing budget is satisfied.
Supply Voltage Range 2.5 V to 5.5 V 2.5 V to 5.5 V Operating voltage range must match the system rail; both support 2.5–5.5 V, allowing use in 3.3 V and 5 V designs.
Page Size 256 bytes 16 bytes Page size limits the number of bytes writable in a single page-write command; a larger page reduces write overhead and improves throughput.
Package / Mounting 8-SOIC (SOIJ), Surface Mount 8-SOIC, Surface Mount Package footprint and pinout must match the PCB layout; both are 8-pin SOIC but body width variants can affect solderability.
Operating Temperature Range -40 °C to +125 °C -40 °C to +125 °C Temperature grade determines suitability for automotive and industrial environments; both meet the extended -40 to +125 °C range.
Interface Type SPI (Serial Peripheral Interface) SPI (Serial Peripheral Interface) Protocol compatibility is essential for host controller communication; both use standard SPI modes 0 and 3.
Automotive Qualification AEC-Q100 (Extended grade) AEC-Q100 (Variant suffix KVAO) AEC-Q100 qualification indicates the device is validated for automotive reliability and quality requirements.

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Full specification comparison

Use manufacturer datasheets as the final authority.

Specification 25LC1024T-E/SM 25LC160D-E/SN16KVAO
Supplier - Microchip Technology
Series - Automotive, AEC-Q100
Part Status Active Active
Memory Type Non-Volatile Non-Volatile
Memory Format EEPROM EEPROM
Technology EEPROM EEPROM
Memory Size 1Mb (128K x 8) 16Kb (2K x 8)
Memory Interface SPI SPI
Clock Frequency 20 MHz 5 MHz
Write Cycle Time - Word Page 6ms 5ms
Voltage - Supply 2.5V ~ 5.5V 2.5V ~ 5.5V
Operating Temperature -40°C ~ 125°C (TA) -40°C ~ 125°C (TA)
Mounting Type Surface Mount Surface Mount

Frequently asked questions

What are the key differences between the 25LC1024T-E/SM and the 25LC160D-E/SN16KVAO?

The 25LC1024T-E/SM is a 1 Mbit SPI serial EEPROM in an 8-lead SOIJ package, while the 25LC160D-E/SN16KVAO is a 16 Kbit SPI serial EEPROM in an 8-lead SOIC package. The primary differences are memory density (1 Mbit vs 16 Kbit), package type (SOIJ vs SOIC), and the 25LC160D-E/SN16KVAO carries an automotive AEC-Q100 qualification.

Are the 25LC1024T-E/SM and 25LC160D-E/SN16KVAO pin-to-pin compatible?

Both devices use an 8-lead package with standard SPI pinout (CS, SO, WP, VSS, SI, SCK, HOLD, VCC). However, the 25LC1024T-E/SM uses the SOIJ (8-lead SOIC with 5.33 mm body width) package, while the 25LC160D-E/SN16KVAO uses the SOIC (8-lead, 3.90 mm body width) package. PCB land patterns differ, so they are not drop-in replacements without layout verification.

Can the 25LC1024T-E/SM be used as a substitute for the 25LC160D-E/SN16KVAO in an existing design?

No, not directly. Although both are SPI EEPROMs, the 25LC1024T-E/SM has a different memory density (1 Mbit vs 16 Kbit), a different package footprint (SOIJ vs SOIC), and lacks the automotive qualification of the 25LC160D-E/SN16KVAO. Substitution requires validation of memory size, package compatibility, and qualification requirements.

What are the operating voltage ranges for these two EEPROM devices?

The 25LC1024T-E/SM operates from 2.5V to 5.5V. The 25LC160D-E/SN16KVAO operates from 2.5V to 5.5V. Both support standard 2.5V to 5.5V supply ranges per Microchip datasheets.

What is the maximum clock frequency for the 25LC1024T-E/SM and 25LC160D-E/SN16KVAO?

The 25LC1024T-E/SM supports a maximum SPI clock frequency of 20 MHz. The 25LC160D-E/SN16KVAO supports a maximum SPI clock frequency of 10 MHz. The higher clock rate of the 25LC1024T-E/SM allows faster data throughput.

Do both devices support the same SPI modes?

Yes. Both the 25LC1024T-E/SM and 25LC160D-E/SN16KVAO support SPI modes 0 (0,0) and 3 (1,1), as specified in their respective Microchip datasheets.

What are the temperature grade differences between the 25LC1024T-E/SM and 25LC160D-E/SN16KVAO?

The 25LC1024T-E/SM is specified for the extended temperature range of -40°C to +125°C. The 25LC160D-E/SN16KVAO is also specified for -40°C to +125°C, but additionally carries the automotive AEC-Q100 qualification for use in automotive applications.

What are the package dimensions and moisture sensitivity levels for these devices?

The 25LC1024T-E/SM uses the 8-lead SOIJ package with a body width of 5.33 mm and is rated MSL 1. The 25LC160D-E/SN16KVAO uses the 8-lead SOIC package with a body width of 3.90 mm and is rated MSL 1. Both are lead-free and RoHS compliant.

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