TLC7528IFN Equivalent & Substitute Parts

Part Overview

The TLC7528IFN is an 8-bit digital-to-analog converter (DAC) manufactured by Texas Instruments, featuring dual D/A converters in a 20-PLCC surface mount package. This device is classified as Last Time Buy, indicating end-of-life status. Finding equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring 8-bit DAC functionality with parallel data interface and external reference capability.

Substiute Parts

TLC7528IFN

Texas InstrumentsIn Stock: 3116TLC7528IFN Datasheet

Current PartRFQ

DAC7802KU/1K

Texas InstrumentsIn Stock: 1462DAC7802KU/1K Datasheet

MFR RecommendedRFQ

AD7528JPZ

Analog Devices Inc.In Stock: 1787AD7528JPZ Datasheet

MFR RecommendedRFQ

AD7528JPZ-REEL

Analog Devices Inc.In Stock: 2155AD7528JPZ-REEL Datasheet

MFR RecommendedRFQ

AD7528KPZ

Analog Devices Inc.In Stock: 2227AD7528KPZ Datasheet

MFR RecommendedRFQ

AD7528KPZ-REEL

Analog Devices Inc.In Stock: 1176AD7528KPZ-REEL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TLC7528IFN is determined by the following critical parameters:

Primary Substitution Criteria:

• Number of bits: 8-bit resolution
• Number of D/A converters: Dual converters (2)
• Data interface: Parallel
• Output type: Current - Unbuffered
• Reference type: External
• Package: 20-PLCC (9x9) form factor
• Architecture: R-2R topology

Secondary Compatibility Factors:

• Supply voltage ranges (Analog and Digital)
• Operating temperature range
• Settling time performance
• INL/DNL accuracy specifications
• Surface mount capability

Substitute parts are grouped into two categories:

Category 1: Direct Pin-Compatible Substitutes (Analog Devices AD7528 Series) Parts AD7528JPZ, AD7528JPZ-REEL, AD7528KPZ, and AD7528KPZ-REEL maintain identical package, pinout, and core functional specifications. These devices are functionally equivalent with matching 8-bit resolution, dual DAC architecture, parallel interface, and R-2R topology. Differences exist in settling time (400ns vs. 100ns) and INL/DNL specifications, which are acceptable trade-offs for most applications.

Category 2: Higher-Resolution Alternative (Texas Instruments DAC7802KU/1K) The DAC7802KU/1K offers 12-bit resolution with dual converters but requires package migration from 20-PLCC to 24-SOIC. This substitute is suitable only for applications where higher resolution is beneficial and PCB redesign is feasible.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Recommended for Most Applications):

The Analog Devices AD7528 series (AD7528JPZ, AD7528JPZ-REEL, AD7528KPZ, AD7528KPZ-REEL) provides the most straightforward substitution path. All variants maintain pin-for-pin compatibility with the TLC7528IFN, identical package geometry, and equivalent functional performance. These parts are in Active product status, ensuring long-term availability and supply chain stability. Selection between variants depends on packaging requirements: choose JPZ variants for tube packaging or KPZ variants for alternative packaging options. The REEL suffix indicates tape-and-reel packaging suitable for automated assembly.

For Applications Requiring Extended Temperature Range:

The AD7528 series supports -40°C to 85°C operating temperature, extending the lower temperature limit compared to the TLC7528IFN (-25°C to 85°C). This makes AD7528 variants suitable for industrial and automotive applications requiring broader temperature performance.

For Higher Resolution Requirements:

The DAC7802KU/1K offers 12-bit resolution with dual converters and Active product status. This substitute requires PCB redesign due to package migration from 20-PLCC to 24-SOIC. The DAC7802KU/1K operates at fixed 5V supply (versus the TLC7528IFN's 5V-15V range) and has higher MSL rating (3 versus 1), requiring stricter moisture control during assembly. This option is suitable only when higher resolution justifies redesign effort.

Compliance and Certification:

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 export classification, matching the TLC7528IFN regulatory profile. No additional compliance verification is required for substitution.

Frequently Asked Questions (FAQ)

Q: Can AD7528 variants be used as direct drop-in replacements for TLC7528IFN?

A: Yes. AD7528JPZ, AD7528JPZ-REEL, AD7528KPZ, and AD7528KPZ-REEL are pin-compatible substitutes with identical 20-PLCC package geometry. No PCB modifications are required. Functional differences (settling time and INL/DNL specifications) are acceptable for most applications.

Q: What is the difference between AD7528KPZ and AD7528JPZ?

A: Both parts are functionally identical 8-bit dual DACs in 20-PLCC packages. The primary difference is packaging format: KPZ is supplied in tubes, while JPZ is supplied in alternative packaging. Select based on your assembly process requirements.

Q: Why does the DAC7802KU/1K require PCB redesign?

A: The DAC7802KU/1K uses a 24-SOIC package instead of the 20-PLCC package used by TLC7528IFN. Pin count and pinout differ, requiring schematic and layout modifications. This substitute is suitable only when higher 12-bit resolution justifies redesign effort.

Q: Are there settling time implications when substituting with AD7528 variants?

A: Yes. AD7528 variants have 400ns settling time compared to TLC7528IFN's 100ns. For applications with timing-critical analog output requirements, verify that 400ns settling time meets system specifications before substitution.

Q: What is the impact of different INL/DNL specifications?

A: TLC7528IFN specifies ±0.5 LSB for both INL and DNL. AD7528JPZ and AD7528JPZ-REEL specify ±1 LSB for both parameters. AD7528KPZ and AD7528KPZ-REEL specify ±0.5 LSB INL and ±1 LSB DNL. For precision analog applications, verify that the substitute's accuracy specifications meet system requirements.

Q: Can I use AD7528 variants in applications requiring 5V-15V supply range?

A: Yes. All AD7528 variants support 5V-15V analog and digital supply voltage ranges, matching the TLC7528IFN specification. No supply circuit modifications are required.

Q: What is the moisture sensitivity impact of DAC7802KU/1K?

A: DAC7802KU/1K has MSL rating 3 (168 hours), requiring stricter moisture control during storage and assembly compared to TLC7528IFN and AD7528 variants (both MSL 1, unlimited). Implement appropriate bake-out procedures before reflow soldering if using DAC7802KU/1K.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. TLC7528IFN, all AD7528 variants, and DAC7802KU/1K are ROHS3 compliant with REACH unaffected status. No compliance verification is required for substitution.