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

Esta comparação detalhada entre 25LC1024T-E/SM e 25LC160D-E/SN16KVAO fornece informações valiosas sobre suas especificações e principais características. Abordamos fatores importantes em detalhes, incluindo conformidade com RoHS, status REACH, série, estilo de montagem, tipo de encapsulamento e outras características relevantes. Apresentar as diferenças lado a lado simplifica a seleção de componentes, facilitando a escolha da melhor opção para sua aplicação específica.

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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