Z8523320FSC Equivalent & Substitute Parts

Part Overview

The Z8523320FSC is a specialized interface IC manufactured by Zilog in a 44-LQFP (10x10) package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. The part operates within a 4.5V to 5.5V supply voltage range and is designed for surface mount applications. Due to its obsolete status, identifying functionally compatible alternatives is essential for maintaining system continuity and sourcing availability.

Key Parameters

Parameter	Value
Manufacturer Part Number	Z8523320FSC
Manufacturer	Zilog
Category	Interface
Description	IC INTERFACE SPECIALIZED 44LQFP
Package / Case	44-LQFP (10x10)
Voltage - Supply	4.5V ~ 5.5V
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitute parts for the Z8523320FSC are identified based on the following criteria:

Category: All substitutes are classified as Interface ICs
Mounting Type: All substitutes use Surface Mount technology
Product Status: Active substitutes are prioritized to ensure long-term availability
Voltage Supply Range: Substitutes operate within compatible voltage ranges (1.65V to 5.5V across the substitute pool)
Package Compatibility: While package sizes vary, all substitutes are available in modern QFN, TSSOP, TFBGA, or TQFN packages suitable for surface mount assembly

The substitutes listed represent interface components from established manufacturers including Texas Instruments, Analog Devices Inc., NXP USA Inc., and Nuvoton Technology Corporation. These parts maintain active product status and RoHS3 compliance, addressing the obsolescence of the original Z8523320FSC.

Parameter Comparison

Part Number	Manufacturer	Category	Package / Case	Voltage - Supply	Mounting Type	Product Status	RoHS Status	MSL
Z8523320FSC	Zilog	Interface	44-LQFP (10x10)	4.5V ~ 5.5V	Surface Mount	Obsolete	RoHS non-compliant	3 (168 Hours)
LM81CIMT-3/NOPB	Texas Instruments	Power Management (PMIC)	24-TSSOP (0.173", 4.40mm Width)	2.8V ~ 3.8V	Surface Mount	Obsolete	ROHS3 Compliant	1 (Unlimited)
LTC1955IUH#PBF	Analog Devices Inc.	Interface	32-WFQFN Exposed Pad	1.7V ~ 5.5V	Surface Mount	Active	ROHS3 Compliant	1 (Unlimited)
MAX7359ETG+T	Analog Devices Inc./Maxim Integrated	Interface	24-WFQFN Exposed Pad	1.65V ~ 3.6V	Surface Mount	Active	ROHS3 Compliant	1 (Unlimited)
NCT5948W	Nuvoton Technology Corporation	Interface	Not specified	Not specified	Surface Mount	Active	ROHS3 Compliant	Not specified
PTN3360DBS,518	NXP USA Inc.	Interface	48-VFQFN Exposed Pad	2.85V ~ 3.6V	Surface Mount	Active	ROHS3 Compliant	3 (168 Hours)
TDA8026ET/C2,518	NXP USA Inc.	Interface	64-TFBGA	2.7V ~ 5.5V	Surface Mount	Active	ROHS3 Compliant	2 (1 Year)
TLK1101ERGPT	Texas Instruments	Interface	20-VFQFN Exposed Pad	2.95V ~ 3.6V	Surface Mount	Active	ROHS3 Compliant	2 (1 Year)
TPD12S520DBTR	Texas Instruments	Interface	38-TFSOP (0.173", 4.40mm Width)	5V	Surface Mount	Active	ROHS3 Compliant	2 (1 Year)
TPL9202PWPR	Texas Instruments	Interface	20-PowerTSSOP (0.173", 4.40mm Width)	Not specified	Surface Mount	Active	ROHS3 Compliant	2 (1 Year)
LM96570SQE/NOPB	National Semiconductor	Interface	32-WFQFN Exposed Pad	1.71V ~ 1.89V	Surface Mount	Active	ROHS3 Compliant	Not specified

Engineering Selection Recommendations

When selecting a substitute for the Z8523320FSC, prioritize the following criteria:

Active Product Status: LTC1955IUH#PBF, MAX7359ETG+T, NCT5948W, PTN3360DBS,518, TDA8026ET/C2,518, TLK1101ERGPT, TPD12S520DBTR, TPL9202PWPR, and LM96570SQE/NOPB all maintain active product status, ensuring continued availability and manufacturer support. These parts are preferred over the obsolete LM81CIMT-3/NOPB.

RoHS3 Compliance: All substitute parts listed are RoHS3 compliant, addressing the RoHS non-compliance of the original Z8523320FSC. This compliance is critical for applications subject to environmental regulations.

Voltage Supply Compatibility: The LTC1955IUH#PBF (1.7V ~ 5.5V) and TDA8026ET/C2,518 (2.7V ~ 5.5V) offer the broadest voltage ranges compatible with the original 4.5V ~ 5.5V specification. TPD12S520DBTR operates at a fixed 5V supply, matching the upper range of the original part.

Moisture Sensitivity: PTN3360DBS,518 matches the original MSL rating of 3 (168 Hours). Parts with MSL 1 or 2 ratings offer improved moisture handling characteristics for storage and assembly environments.

Package Considerations: Substitutes are available in multiple package formats (QFN, TSSOP, TFBGA, TQFN). PCB layout and assembly capabilities should guide package selection, as pin counts and footprints vary significantly across the substitute options.

Frequently Asked Questions (FAQ)

Q: Can I directly replace the Z8523320FSC with any of these substitute parts?

A: Direct replacement depends on functional requirements and PCB layout compatibility. While all substitutes are classified as Interface ICs with surface mount technology, package sizes, pin configurations, and electrical specifications vary. Verify that the selected substitute matches your application's voltage requirements, pin count, and physical footprint before implementation.

Q: Why is the original Z8523320FSC obsolete?

A: The Z8523320FSC is classified as obsolete by the manufacturer, meaning it is no longer in production. This status necessitates identifying active substitute parts to maintain system support and enable new designs. All recommended substitutes maintain active product status with established manufacturers.

Q: What is the significance of RoHS3 compliance in these substitutes?

A: RoHS3 compliance indicates that substitute parts meet current environmental and hazardous substance restrictions. The original Z8523320FSC is RoHS non-compliant, making RoHS3-compliant substitutes essential for applications subject to environmental regulations or customer requirements.

Q: How do I determine which substitute is best for my application?

A: Evaluate substitutes based on: (1) voltage supply range compatibility with your system, (2) package and pin configuration fit within your PCB layout, (3) functional interface requirements (I2C, HDMI, DVI, etc.), and (4) operating temperature range. Cross-reference the detailed specifications of candidate parts against your design requirements.

Q: What is Moisture Sensitivity Level (MSL) and why does it matter?

A: MSL indicates how long a component can be exposed to moisture before soldering without degradation. MSL 1 (Unlimited) parts offer the longest shelf life and most forgiving handling. MSL 3 (168 Hours) parts require more careful storage and handling. Select based on your supply chain and assembly environment capabilities.

Q: Are all these substitutes available in the same package as the Z8523320FSC?

A: No. The Z8523320FSC uses a 44-LQFP (10x10) package. Substitutes are available in various packages including 20-QFN, 24-TSSOP, 24-TQFN, 32-QFN, 38-TSSOP, 48-HVQFN, and 64-TFBGA. Package selection must align with your PCB design and assembly capabilities.

Q: What does "Active" product status mean for these substitutes?

A: Active product status indicates that the manufacturer continues to produce and support the part. This ensures long-term availability, ongoing technical support, and stable pricing. Active parts are preferred over obsolete alternatives for new designs and system maintenance.

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