LTV-844M Equivalent & Substitute Parts

Part Overview

The LTV-844M is a 4-channel optoisolator with transistor output manufactured by Lite-On Inc. It provides 5000Vrms isolation voltage and is designed for applications requiring galvanic isolation between input and output circuits. The device is classified as Active status and is suitable for AC and DC input applications. Alternative models may be required due to inventory constraints, application-specific performance needs, or supply chain considerations.

Substiute Parts

LTV-844M

Lite-On Inc.In Stock: 914LTV-844M Datasheet

Current PartRFQ

LTV-844

Lite-On Inc.In Stock: 6859LTV-844 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LTV-844M is determined by strict equivalence across the following critical parameters:

• Number of Channels: 4
• Voltage - Isolation: 5000Vrms
• Current Transfer Ratio range: 20% to 300% @ 1mA
• Output Type: Transistor
• Maximum Output Voltage: 35V
• Maximum Output Current per Channel: 50mA
• Package / Case: 16-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole
• Input Type: AC, DC compatible

The LTV-844 is identified as a parametric equivalent to the LTV-844M. Both devices share identical electrical specifications, isolation ratings, channel configuration, and physical packaging. The substitution is valid for applications where the specified performance envelope is required.

Parameter Comparison

Engineering Selection Recommendations

Both the LTV-844M and LTV-844 are Active status components manufactured by Lite-On Inc. and maintain full ROHS3 compliance. The LTV-844 offers higher inventory availability (6760 Pcs) compared to the LTV-844M (879 Pcs), making it suitable for high-volume production requirements. Both devices carry MSL Level 1 (Unlimited) moisture sensitivity classification, indicating no special moisture handling requirements during storage or assembly. Selection between these parts should be based on inventory availability and supply chain lead times, as electrical and mechanical specifications are identical.

Frequently Asked Questions (FAQ)

Q: Can the LTV-844 be used as a direct replacement for the LTV-844M?

A: Yes. The LTV-844 is a parametric equivalent with identical electrical specifications, isolation voltage, channel configuration, current transfer ratio range, output characteristics, and 16-DIP package dimensions. Direct substitution is valid for all applications where the LTV-844M is specified.

Q: Are there any differences in compliance or certifications between these parts?

A: Both parts are ROHS3 compliant and carry identical MSL Level 1 (Unlimited) ratings. No compliance differences exist between the two models.

Q: What is the significance of the 16-DIP package specification?

A: The 16-DIP (0.300", 7.62mm) package specifies a dual inline through-hole configuration with 0.3-inch row spacing and 7.62mm pitch. Both the LTV-844M and LTV-844 use this identical package, ensuring mechanical and electrical compatibility on PCBs designed for either part number.

Q: Does inventory status affect the technical suitability of the LTV-844 as a substitute?

A: No. Inventory levels do not impact electrical or mechanical compatibility. The LTV-844 is selected as a substitute based solely on parametric equivalence. Higher inventory availability may influence procurement decisions but does not alter technical performance characteristics.

Q: Are the rise and fall times identical between both parts?

A: Yes. Both the LTV-844M and LTV-844 specify identical rise and fall times of 4µs and 3µs respectively, ensuring equivalent switching performance in circuit applications.