MX30LF4G18AC-TI Equivalent & Substitute Parts

Part Overview

The MX30LF4G18AC-TI is a 4Gbit parallel NAND Flash memory IC manufactured by Macronix in a 48-TSOP package. This device is classified as Not For New Designs, indicating it has reached end-of-life status. The part operates with a 20 ns write cycle time and supports a supply voltage range of 2.7V to 3.6V across an operating temperature range of -40°C to 85°C. Due to its discontinued design status, equivalent substitute parts with matching electrical and mechanical specifications are necessary for ongoing system support and component procurement.

Key Parameters

Parameter	Value
Memory Size	4Gbit
Memory Organization	512M x 8
Memory Technology	FLASH - NAND (SLC)
Memory Interface	Parallel
Write Cycle Time	20 ns
Voltage Supply Range	2.7V ~ 3.6V
Operating Temperature	-40°C ~ 85°C
Package Type	48-TFSOP (0.724", 18.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitute parts for the MX30LF4G18AC-TI are qualified based on the following critical parameters:

Memory capacity: 4Gbit
Memory organization: 512M x 8
Technology: FLASH - NAND (SLC)
Interface: Parallel
Package: 48-TFSOP
Supply voltage: 2.7V ~ 3.6V
Operating temperature range: -40°C ~ 85°C
RoHS3 compliance
MSL rating: 3

The substitute parts identified maintain electrical compatibility through matching memory specifications, voltage requirements, and temperature ratings. Package compatibility is ensured through identical 48-TFSOP form factors. All substitutes meet the same environmental and compliance standards as the original part.

Parameter Comparison

Parameter	MX30LF4G18AC-TI	MX30LF4G28AD-TI	IS34ML04G081-TLI	IS34ML04G084-TLI-TR
Manufacturer	Macronix	Macronix	ISSI	ISSI
Memory Size	4Gbit	4Gbit	4Gbit	4Gbit
Memory Organization	512M x 8	512M x 8	512M x 8	512M x 8
Technology	FLASH - NAND (SLC)	FLASH - NAND (SLC)	FLASH - NAND (SLC)	FLASH - NAND (SLC)
Memory Interface	Parallel	Parallel	Parallel	Parallel
Write Cycle Time	20 ns	20 ns	25 ns	25 ns
Voltage Supply	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	48-TFSOP	48-TFSOP	48-TFSOP	48-TFSOP
Product Status	Not For New Designs	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)
Packaging Format	Tray	Tray	Tray	Tape & Reel

Engineering Selection Recommendations

MX30LF4G28AD-TI is the primary substitute option. This Macronix part maintains identical electrical specifications including 20 ns write cycle time, matching the original MX30LF4G18AC-TI performance characteristics. The part is currently in Active product status with significantly higher inventory availability (128,300 pcs vs. 24,600 pcs). Both parts share the same base product number (MX30LF4) and are fully compatible at the electrical and mechanical level.

IS34ML04G081-TLI and IS34ML04G084-TLI-TR are secondary substitute options from ISSI. These parts maintain all critical electrical parameters including 4Gbit capacity, 512M x 8 organization, parallel interface, and identical voltage/temperature specifications. The primary difference is a 25 ns write cycle time, which is slower than the original 20 ns specification but remains within acceptable operational parameters for most applications. IS34ML04G084-TLI-TR is supplied in Tape & Reel packaging, while IS34ML04G081-TLI is supplied in Tray format. Both ISSI parts are in Active product status.

All substitute parts maintain ROHS3 compliance and identical MSL ratings, ensuring environmental and handling compatibility with the original design.

Frequently Asked Questions (FAQ)

Q: Can MX30LF4G28AD-TI be used as a direct replacement for MX30LF4G18AC-TI?

A: Yes. MX30LF4G28AD-TI is electrically and mechanically identical to MX30LF4G18AC-TI. Both parts share the same 4Gbit capacity, 512M x 8 organization, 20 ns write cycle time, 2.7V-3.6V supply voltage, -40°C to 85°C operating range, and 48-TFSOP package. The primary difference is product status: MX30LF4G28AD-TI is Active while MX30LF4G18AC-TI is Not For New Designs.

Q: What is the impact of the 25 ns write cycle time in ISSI substitutes compared to the 20 ns original specification?

A: The ISSI parts (IS34ML04G081-TLI and IS34ML04G084-TLI-TR) operate with a 25 ns write cycle time versus the 20 ns specification of the original part. This represents a 5 ns increase in write operation duration. Compatibility depends on system timing requirements. If the original design accommodates 25 ns write cycles, these parts are functionally compatible. If the design requires 20 ns performance, the Macronix MX30LF4G28AD-TI is the appropriate choice.

Q: Are there packaging differences between the substitute parts?

A: MX30LF4G18AC-TI, MX30LF4G28AD-TI, and IS34ML04G081-TLI are supplied in Tray packaging. IS34ML04G084-TLI-TR is supplied in Tape & Reel format. All parts use the identical 48-TFSOP physical package. Packaging format selection depends on assembly process requirements and volume considerations.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. All substitute parts are ROHS3 compliant, REACH unaffected, and carry MSL rating 3 (168 Hours), matching the original MX30LF4G18AC-TI specifications.

Q: Which substitute part should be selected for new designs?

A: MX30LF4G28AD-TI is the recommended choice for new designs. It maintains identical electrical performance to the original part while offering Active product status and superior inventory availability.

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