DAC084S085CISDX Equivalent & Substitute Parts

Part Overview

The DAC084S085CISDX is an 8-bit digital-to-analog converter (DAC) manufactured by Texas Instruments, designed for data acquisition applications. This device integrates four independent DAC channels in a compact 10-WSON (3x3) surface mount package with buffered voltage output. The main part number DAC084S085CISDX is classified as obsolete, making identification of active equivalent parts essential for ongoing production and design continuity. Substitute parts maintain identical electrical and mechanical specifications while offering active product status and improved availability.

Key Parameters

Parameter	Specification
Number of Bits	8
Number of D/A Converters	4
Output Type	Voltage - Buffered
Settling Time	4.5µs
Data Interface	SPI, DSP
Reference Type	External
Voltage - Supply, Analog	2.7V ~ 5.5V
Voltage - Supply, Digital	2.7V ~ 5.5V
INL/DNL (LSB)	±0.14, +0.04 (Max)
Architecture	String DAC
Operating Temperature	-40°C ~ 105°C
Package / Case	10-WFDFN Exposed Pad
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the DAC084S085CISDX are identified based on strict parametric equivalence. The following criteria determine valid substitution:

Critical Matching Parameters:

Number of bits: 8
Number of D/A converters: 4
Output type: Voltage - Buffered
Settling time: 4.5µs
Data interface: SPI, DSP
Reference type: External
Supply voltage ranges: 2.7V ~ 5.5V (both analog and digital)
INL/DNL specifications: ±0.14, +0.04 (Max)
Architecture: String DAC
Operating temperature range: -40°C ~ 105°C
Package: 10-WFDFN Exposed Pad
Mounting type: Surface Mount

The identified substitute parts maintain all electrical and mechanical parameters identical to the main part. Differences exist only in product status (active vs. obsolete) and packaging configuration (Tape & Reel vs. standard packaging), which do not affect functional compatibility in circuit applications.

Parameter Comparison

Parameter	DAC084S085CISDX	DAC084S085CISD/NOPB	DAC084S085CISDX/NOPB
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments
Number of Bits	8	8	8
Number of D/A Converters	4	4	4
Settling Time	4.5µs	4.5µs	4.5µs
Output Type	Voltage - Buffered	Voltage - Buffered	Voltage - Buffered
Data Interface	SPI, DSP	SPI, DSP	SPI, DSP
Reference Type	External	External	External
Voltage - Supply, Analog	2.7V ~ 5.5V	2.7V ~ 5.5V	2.7V ~ 5.5V
Voltage - Supply, Digital	2.7V ~ 5.5V	2.7V ~ 5.5V	2.7V ~ 5.5V
INL/DNL (LSB)	±0.14, +0.04 (Max)	±0.14, +0.04 (Max)	±0.14, +0.04 (Max)
Architecture	String DAC	String DAC	String DAC
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Package / Case	10-WFDFN Exposed Pad	10-WFDFN Exposed Pad	10-WFDFN Exposed Pad
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

DAC084S085CISD/NOPB is an active equivalent suitable for new designs and production applications. This part maintains full parametric compatibility with the obsolete DAC084S085CISDX while offering active product status and ROHS3 compliance. The Tape & Reel packaging configuration supports automated assembly processes.

DAC084S085CISDX/NOPB is the preferred substitute for direct replacement in existing production environments. This part provides identical electrical and mechanical specifications, active product status, and significantly higher inventory availability (31,900 units in stock). The NOPB designation indicates lead-free compliance, and Tape & Reel packaging is optimized for high-volume manufacturing.

Both substitute parts are manufactured by Texas Instruments under the same base product number (DAC084S085) and share identical core architecture, performance characteristics, and compliance certifications with the original part.

Frequently Asked Questions (FAQ)

Q: Can DAC084S085CISD/NOPB and DAC084S085CISDX/NOPB be used interchangeably with DAC084S085CISDX?

A: Yes. All three parts are parametrically equivalent across all electrical and mechanical specifications. The differences are limited to product status (active vs. obsolete) and packaging format (Tape & Reel), neither of which affects circuit functionality or performance.

Q: What is the difference between DAC084S085CISD/NOPB and DAC084S085CISDX/NOPB?

A: Both parts are functionally identical with matching electrical specifications, package type, and compliance certifications. The primary distinction is inventory availability, with DAC084S085CISDX/NOPB offering significantly higher stock levels (31,900 units vs. 4,670 units).

Q: Are the substitute parts suitable for new product designs?

A: Yes. Both DAC084S085CISD/NOPB and DAC084S085CISDX/NOPB carry active product status and full ROHS3 compliance, making them appropriate for new designs. The obsolete status of the original part makes these substitutes the recommended choice for ongoing development.

Q: Does the Tape & Reel packaging affect circuit performance?

A: No. Tape & Reel packaging is a supply format for automated assembly and does not alter electrical performance, thermal characteristics, or functional behavior of the device.

Q: Are all three parts compatible with the same PCB layout and schematic?

A: Yes. All parts share identical pin configurations, package dimensions (10-WFDFN Exposed Pad), and electrical interface requirements. No design modifications are necessary for substitution.

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