IS42S16320D-6BLI Equivalent & Substitute Parts

Part Overview

The IS42S16320D-6BLI is a 512Mbit SDRAM memory IC manufactured by ISSI (Integrated Silicon Solution Inc) in a 54-TFBGA package. This part operates at 166 MHz with a 5.4 ns access time and is rated for -40°C to 85°C operating temperature. The device is classified as "Not For New Designs," indicating end-of-life status. Equivalent and substitute parts are necessary to maintain system compatibility, ensure continued supply availability, and support legacy equipment requiring this memory specification.

Key Parameters

Parameter	Value
Memory Size	512Mbit
Memory Organization	32M x 16
Memory Technology	SDRAM
Memory Interface	Parallel
Clock Frequency	166 MHz
Access Time	5.4 ns
Supply Voltage	3V – 3.6V
Operating Temperature	-40°C to 85°C
Package	54-TFBGA (8x13)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the IS42S16320D-6BLI is determined by strict equivalence in the following parameters:

Memory capacity: 512Mbit
Memory organization: 32M x 16
Memory technology: SDRAM
Memory interface: Parallel
Access time: 5.4 ns
Supply voltage range: 3V – 3.6V
Package type: 54-TFBGA (8x13)
RoHS compliance: ROHS3 Compliant
Moisture sensitivity level: 3 (168 Hours)

Clock frequency variations are permitted within the substitute group, as SDRAM devices operating at different frequencies (143 MHz, 166 MHz, 167 MHz) maintain backward compatibility when used in systems designed for the original specification. Operating temperature range may extend to 105°C in certain variants without affecting substitutability for applications within the -40°C to 85°C range.

Parameter Comparison

Part Number	Manufacturer	Memory Size	Organization	Clock Frequency (MHz)	Access Time (ns)	Supply Voltage	Operating Temperature	Package	Product Status	Inventory (Pcs)
IS42S16320D-6BLI	ISSI	512Mbit	32M x 16	166	5.4	3V – 3.6V	-40°C to 85°C	54-TFBGA	Not For New Designs	1147
IS42S16320F-6BLI	ISSI	512Mbit	32M x 16	167	5.4	3V – 3.6V	-40°C to 85°C	54-TFBGA	Active	1424
IS42S16320F-7BLI	ISSI	512Mbit	32M x 16	143	5.4	3V – 3.6V	-40°C to 85°C	54-TFBGA	Active	1101
IS45S16320F-6BLA1	ISSI	512Mbit	32M x 16	167	5.4	3V – 3.6V	-40°C to 85°C	54-TFBGA	Active	974
IS45S16320F-7BLA1	ISSI	512Mbit	32M x 16	143	5.4	3V – 3.6V	-40°C to 85°C	54-TFBGA	Active	958
IS45S16320F-7BLA2	ISSI	512Mbit	32M x 16	143	5.4	3V – 3.6V	-40°C to 105°C	54-TFBGA	Active	1580

Engineering Selection Recommendations

All substitute parts listed maintain full electrical and mechanical compatibility with the IS42S16320D-6BLI within the specified operating parameters. Selection among substitutes should be based on the following criteria:

Product Status: The IS42S16320F-6BLI, IS42S16320F-7BLI, IS45S16320F-6BLA1, IS45S16320F-7BLA1, and IS45S16320F-7BLA2 are all classified as Active products, ensuring continued availability and manufacturing support compared to the original part's end-of-life status.

Compliance & Certifications: All substitute parts maintain ROHS3 compliance, REACH unaffected status, and identical moisture sensitivity levels (MSL 3, 168 Hours), ensuring regulatory and environmental compatibility.

Inventory Availability: IS45S16320F-7BLA2 offers the highest inventory level (1580 Pcs), followed by IS42S16320F-6BLI (1424 Pcs), providing supply security for production requirements.

Temperature Range Extension: IS45S16320F-7BLA2 extends the operating temperature range to -40°C to 105°C, suitable for applications requiring enhanced thermal performance beyond the standard -40°C to 85°C specification.

Frequently Asked Questions (FAQ)

Q: Can IS42S16320F-6BLI be used as a direct replacement for IS42S16320D-6BLI?

A: Yes. IS42S16320F-6BLI is electrically and mechanically equivalent. Both devices operate at similar clock frequencies (166 MHz vs. 167 MHz), maintain identical access time (5.4 ns), supply voltage (3V – 3.6V), and package specifications (54-TFBGA). The primary difference is product status: IS42S16320F-6BLI is Active, ensuring continued supply.

Q: What is the difference between IS42S16320F-7BLI and IS45S16320F-7BLA1?

A: Both parts operate at 143 MHz with 5.4 ns access time and -40°C to 85°C temperature range. The difference lies in the base product number (IS42S16320 vs. IS45S16320) and packaging designation (BLI vs. BLA1). Both are functionally equivalent for applications within the specified operating range.

Q: Is IS45S16320F-7BLA2 suitable for high-temperature applications?

A: IS45S16320F-7BLA2 supports an extended operating temperature range of -40°C to 105°C, compared to the standard -40°C to 85°C of other substitutes. This part is suitable for applications requiring operation at elevated temperatures within this extended range.

Q: Do all substitute parts maintain the same package footprint?

A: Yes. All substitute parts use the 54-TFBGA (8x13) package, ensuring identical PCB footprint and mounting compatibility with the original IS42S16320D-6BLI.

Q: Are there any restrictions on mixing substitute parts in the same system?

A: No restrictions exist based on the provided electrical and mechanical parameters. All substitute parts are fully compatible with each other and with the original part within their specified operating conditions.

Q: What is the significance of the clock frequency variation (143 MHz, 166 MHz, 167 MHz)?

A: Clock frequency variations indicate different speed grades of the same memory device. Lower frequency parts (143 MHz) are backward compatible with systems designed for higher frequencies (166 MHz, 167 MHz). Selection should match or exceed the system's minimum frequency requirement.

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