LC75854WHS-E Equivalent & Substitute Parts

Part Overview

The LC75854WHS-E is an LCD driver integrated circuit manufactured by onsemi, designed for LCD display applications requiring 164-segment configuration with serial interface control. This device operates as a Surface Mount component in a 64-LQFP package format. The product is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, maintenance, and component procurement in legacy applications.

Substiute Parts

LC75854WHS-E

onsemiIn Stock: 863LC75854WHS-E Datasheet

Current PartRFQ

LC75857WS-E

SanyoIn Stock: 8668LC75857WS-E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LC75854WHS-E is determined by the following critical parameters:

• Display Type: Must be LCD
• Configuration: Must support 164-segment operation
• Interface: Must be Serial
• Package / Case: Must be 64-LQFP
• Mounting Type: Must be Surface Mount
• Operating Temperature Range: Must encompass -40°C ~ 85°C
• Voltage Supply Range: Must be compatible with or broader than 4.5V ~ 6V

The LC75857WS-E manufactured by Sanyo meets these substitution criteria. While the LC75857WS-E supports both 126-segment and 164-segment configurations, it operates within the required 164-segment mode for direct equivalence. The substitute part maintains identical package specifications, mounting type, and operating temperature range, with an expanded voltage supply range (2.7V ~ 6V) that encompasses the original specification.

Parameter Comparison

Engineering Selection Recommendations

The LC75857WS-E is a direct functional equivalent for the LC75854WHS-E in 164-segment LCD driver applications. Both components are classified as obsolete products, indicating limited availability through standard distribution channels. Selection between these parts should be based on:

• Inventory Availability: The LC75857WS-E has significantly higher stock levels (8657 Pcs) compared to the LC75854WHS-E (826 Pcs), making it the preferred choice for procurement continuity.
• Compliance Status: The LC75857WS-E carries RoHS3 compliance certification, whereas the LC75854WHS-E is listed as REACH Unaffected. Both share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications.
• Electrical Margin: The LC75857WS-E operates at 300 µA supply current versus 200 µA for the original part, and supports a lower minimum voltage (2.7V versus 4.5V), providing expanded operational flexibility.
• Package Compatibility: Both components utilize identical 64-LQFP packaging in 10x10 form factor, ensuring direct PCB footprint compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the LC75857WS-E directly replace the LC75854WHS-E without PCB modifications?

A: Yes. Both components share identical package specifications (64-LQFP, 10x10), mounting type (Surface Mount), and pin configuration for 164-segment LCD driver operation. No PCB layout changes are required.

Q: What is the significance of the LC75857WS-E supporting both 126-segment and 164-segment configurations?

A: The LC75857WS-E is a multi-configuration device capable of operating in either 126-segment or 164-segment mode. For substitution purposes, it operates in 164-segment mode to match the LC75854WHS-E functionality. Configuration selection is typically determined by firmware or hardware strapping during system initialization.

Q: Are there voltage supply differences that affect circuit design?

A: The LC75857WS-E supports a broader voltage range (2.7V ~ 6V) compared to the LC75854WHS-E (4.5V ~ 6V). This expanded lower limit does not require design changes for systems operating within the original 4.5V ~ 6V specification. Systems designed for the original part will operate without modification.

Q: What is the impact of the higher supply current specification in the LC75857WS-E?

A: The LC75857WS-E specifies 300 µA maximum supply current versus 200 µA for the LC75854WHS-E. This represents a 50% increase in worst-case current consumption. Power supply designs must accommodate this higher current draw; however, most applications with adequate margin will not require modification.

Q: Why are both parts classified as obsolete?

A: Both the LC75854WHS-E and LC75857WS-E are legacy LCD driver components from the mid-2000s era. Obsolescence reflects discontinuation by manufacturers and limited availability through standard distribution. Procurement should prioritize available inventory and consider long-term supply chain planning for applications requiring these components.

Q: What packaging format is used for the LC75857WS-E?

A: The LC75857WS-E is supplied in Tray packaging, whereas the LC75854WHS-E does not specify a packaging format. Both components use identical 64-SQFP (10x10) device packages suitable for automated assembly processes.