LC74736PT-E Equivalent & Substitute Parts

Part Overview

The LC74736PT-E is an LCD driver IC manufactured by onsemi, designed for display control applications with support for 450-495 character configurations. This device operates across a 3V to 5.5V supply range and is housed in a 100-TQFP package. The product is currently obsolete, making identification of compatible substitute components essential for ongoing system support, maintenance, and new design implementations where legacy compatibility is required.

Substiute Parts

LC74736PT-E

onsemiIn Stock: 978LC74736PT-E Datasheet

Current PartRFQ

AD8387JSVZ

Analog Devices Inc.In Stock: 1437AD8387JSVZ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LC74736PT-E is evaluated based on the following critical parameters:

Functional Compatibility: Both the main part and substitute must serve LCD driver applications with compatible character/digit display support.

Electrical Parameters: Supply voltage range must overlap or encompass the original specification (3V ~ 5.5V). Operating temperature range should maintain industrial or extended specifications where applicable.

Package Compatibility: Physical package type (TQFP variant) and pin count determine PCB layout feasibility. Package dimensions and thermal characteristics must be evaluated for mechanical fit.

Regulatory Compliance: RoHS3 compliance and MSL ratings ensure environmental and manufacturing process compatibility.

Product Status: Active or current production status of substitute parts ensures long-term availability and supply chain reliability.

The AD8387JSVZ qualifies as a substitute based on shared LCD driver functionality, surface mount TQFP packaging, RoHS3 compliance, and identical MSL rating. However, differences in supply voltage range, operating temperature, package pin count, and physical dimensions require engineering evaluation for specific applications.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: The AD8387JSVZ is classified as an active product with current manufacturing status, ensuring supply chain continuity. Both parts maintain ROHS3 compliance and identical MSL ratings, supporting equivalent environmental and manufacturing process requirements.

Electrical Constraints: The AD8387JSVZ operates within a narrower supply voltage range (3V ~ 3.6V) compared to the LC74736PT-E (3V ~ 5.5V). Applications requiring operation above 3.6V cannot use this substitute without additional voltage regulation or redesign.

Temperature Operating Range: The AD8387JSVZ supports 0°C ~ 75°C operation, which is narrower than the LC74736PT-E range of -40°C ~ 85°C. Systems requiring extended low-temperature operation below 0°C or high-temperature operation above 75°C are not compatible with this substitute.

Package Considerations: The AD8387JSVZ uses an 80-pin TQFP package (12x12mm) versus the 100-pin TQFP package (14x14mm) of the LC74736PT-E. PCB layout modifications are required, including pin mapping verification and potential routing adjustments.

Regulatory Alignment: Both parts share identical export control classifications (EAR99) and tariff codes (8542.39.0001), supporting equivalent compliance documentation.

Frequently Asked Questions (FAQ)

Q: Can the AD8387JSVZ directly replace the LC74736PT-E without PCB modifications?

A: No. The AD8387JSVZ uses an 80-TQFP package with different pin count and physical dimensions (12x12mm) compared to the LC74736PT-E 100-TQFP package (14x14mm). PCB layout redesign is required, including footprint changes and signal routing verification.

Q: What are the voltage compatibility constraints?

A: The AD8387JSVZ operates within 3V ~ 3.6V, while the LC74736PT-E supports 3V ~ 5.5V. If your application requires operation above 3.6V, the AD8387JSVZ is not suitable without external voltage regulation.

Q: Are there temperature range limitations with the substitute?

A: Yes. The AD8387JSVZ supports 0°C ~ 75°C operation, which excludes applications requiring extended low-temperature operation below 0°C or sustained operation above 75°C. The LC74736PT-E supports -40°C ~ 85°C.

Q: Do both parts meet the same environmental compliance standards?

A: Yes. Both the LC74736PT-E and AD8387JSVZ are ROHS3 compliant with identical MSL ratings of 3 (168 Hours), supporting equivalent environmental and manufacturing process requirements.

Q: What character/digit display capacity does the AD8387JSVZ support?

A: The provided specifications do not include character or digit capacity data for the AD8387JSVZ. This parameter must be obtained from the manufacturer datasheet for compatibility verification with your display configuration.

Q: Are there supply chain advantages to using the AD8387JSVZ?

A: Yes. The AD8387JSVZ is classified as an active product with current production status, ensuring ongoing availability. The LC74736PT-E is obsolete, making the AD8387JSVZ preferable for new designs or long-term system support where component availability is critical.