DAC7545GLUG4 Equivalent & Substitute Parts

Part Overview

The DAC7545GLUG4 is a 12-bit digital-to-analog converter manufactured by Texas Instruments, housed in a 20-SOIC package. This component features an R-2R architecture with external reference capability and unbuffered current output, designed for data acquisition applications requiring parallel data interface operation. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations.

Substiute Parts

DAC7545GLUG4

Texas InstrumentsIn Stock: 1131DAC7545GLUG4 Datasheet

Current PartRFQ

DAC7821IPW

Texas InstrumentsIn Stock: 1505DAC7821IPW Datasheet

MFR RecommendedRFQ

LTC7545ABSW#PBF

Analog Devices Inc.In Stock: 1525LTC7545ABSW#PBF Datasheet

MFR RecommendedRFQ

MX7545AKEWP+

Analog Devices Inc./Maxim IntegratedIn Stock: 864MX7545AKEWP+ Datasheet

MFR RecommendedRFQ

MX7545AKEWP+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3293MX7545AKEWP+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the DAC7545GLUG4 is determined by the following critical parameters: 12-bit resolution, single D/A converter configuration, parallel data interface, external reference requirement, R-2R architecture, and unbuffered current output. The substitute parts are grouped into two categories based on electrical compatibility:

Category 1: Direct Package & Electrical Match (20-SOIC Package) Parts LTC7545ABSW#PBF, MX7545AKEWP+, and MX7545AKEWP+T maintain identical package geometry, supply voltage ranges (5V ~ 15V), and electrical specifications (INL/DNL ±0.5/±1 LSB). These parts are pin-compatible and functionally equivalent for applications requiring the original 20-SOIC form factor.

Category 2: Electrical Equivalent with Package Variation (20-TSSOP Package) Part DAC7821IPW provides equivalent 12-bit resolution and R-2R architecture but operates within a reduced supply voltage range (2.7V ~ 5.5V) and uses a 20-TSSOP package. This part is suitable for applications where package miniaturization is acceptable and supply voltage compatibility exists.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (20-SOIC Package Requirement)

Select LTC7545ABSW#PBF, MX7545AKEWP+, or MX7545AKEWP+T when the original 20-SOIC package footprint must be maintained. All three parts are active products with ROHS3 compliance and identical supply voltage specifications (5V ~ 15V) matching the DAC7545GLUG4. LTC7545ABSW#PBF offers superior moisture sensitivity (MSL 1, Unlimited) compared to the original part (MSL 3, 168 Hours). MX7545AKEWP+T is available in Tape & Reel packaging with the highest inventory availability (3200 Pcs), suitable for high-volume production requirements.

For Package Miniaturization (20-TSSOP Package)

Select DAC7821IPW when PCB space reduction is acceptable and system supply voltages operate within 2.7V ~ 5.5V range. This part provides faster settling time (200ns versus 2µs) and extended operating temperature range (-40°C ~ 125°C). The 20-TSSOP package reduces board area by approximately 40% compared to 20-SOIC. DAC7821IPW includes differential output capability, providing additional design flexibility not present in the original part.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility with the original design.

Frequently Asked Questions (FAQ)

Q: Can DAC7821IPW be used as a direct replacement for DAC7545GLUG4?

A: DAC7821IPW is electrically equivalent but not a direct pin-for-pin replacement. It uses a 20-TSSOP package instead of 20-SOIC, requiring PCB layout modification. Additionally, DAC7821IPW operates at reduced supply voltages (2.7V ~ 5.5V) compared to the original part (5V ~ 15V). Verify system supply voltage compatibility before selection.

Q: What is the primary difference between LTC7545ABSW#PBF and MX7545AKEWP+?

A: Both parts are functionally identical with matching 20-SOIC packages and electrical specifications. The primary difference is manufacturer: LTC7545ABSW#PBF is from Analog Devices Inc., while MX7545AKEWP+ is from Analog Devices Inc./Maxim Integrated. LTC7545ABSW#PBF offers superior moisture sensitivity (MSL 1, Unlimited versus MSL 1, Unlimited for MX7545AKEWP+). Selection may depend on supply chain availability and preferred manufacturer qualification.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts (DAC7821IPW, LTC7545ABSW#PBF, MX7545AKEWP+, and MX7545AKEWP+T) are ROHS3 compliant and REACH unaffected, matching the compliance status of the original DAC7545GLUG4.

Q: What is the difference between MX7545AKEWP+ and MX7545AKEWP+T?

A: Both parts are identical in electrical specifications and 20-SOIC package. The difference is packaging format: MX7545AKEWP+ is supplied in Tube packaging, while MX7545AKEWP+T is supplied in Tape & Reel (TR) format. MX7545AKEWP+T is recommended for automated assembly and high-volume production due to superior inventory availability (3200 Pcs).

Q: Why is the DAC7545GLUG4 classified as obsolete?

A: The DAC7545GLUG4 is obsolete, indicating Texas Instruments has discontinued manufacturing. The substitute parts listed are active products from Texas Instruments and Analog Devices Inc., ensuring long-term availability and continued technical support for new designs and legacy system maintenance.

Q: Can I use DAC7821IPW in applications requiring the full 5V ~ 15V supply voltage range?

A: No. DAC7821IPW operates only within 2.7V ~ 5.5V supply voltage range. Applications requiring 15V supply operation must use LTC7545ABSW#PBF, MX7545AKEWP+, or MX7545AKEWP+T, which support the full 5V ~ 15V range.