DAC7614PB Equivalent & Substitute Parts

Part Overview

The DAC7614PB is a 12-bit digital-to-analog converter (DAC) with four independent channels, manufactured by Texas Instruments in a 16-DIP through-hole package. This component features SPI serial input, external reference capability, and buffered voltage output suitable for data acquisition applications. The DAC7614PB is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production support.

Substiute Parts

DAC7614PB

Texas InstrumentsIn Stock: 2432DAC7614PB Datasheet

Current PartRFQ

DAC7614UB

Burr BrownIn Stock: 1281DAC7614UB Datasheet

MFR RecommendedRFQ

DAC8420EPZ

Analog Devices Inc.In Stock: 1196DAC8420EPZ Datasheet

DirectRFQ

DAC8420FPZ

Analog Devices Inc.In Stock: 3666DAC8420FPZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the DAC7614PB is determined by strict equivalence across the following critical parameters:

• Resolution & Channel Count: 12-bit resolution with 4 independent D/A converters
• Output Configuration: Buffered voltage output with external reference
• Interface Protocol: SPI serial input compatibility
• Supply Voltage Requirements: Analog supply ±5V and digital supply 5V
• Architecture: R-2R ladder network
• Temperature Range: -40°C to 85°C operation
• Package Compatibility: 16-DIP through-hole or equivalent surface-mount alternatives

The substitute parts listed maintain functional equivalence across these parameters while offering either active product status or improved electrical specifications (lower INL/DNL values).

Parameter Comparison

Engineering Selection Recommendations

For Direct Package Replacement (Through-Hole 16-DIP):

DAC8420EPZ and DAC8420FPZ are direct pin-compatible replacements in the original 16-DIP package. Both are manufactured by Analog Devices Inc. and maintain active product status. The DAC8420 series offers extended analog supply voltage range (5V ~ 15V, -15V) compared to the DAC7614PB's fixed ±5V requirement, providing greater design flexibility. Both parts are ROHS3 compliant and carry identical ECCN and HTSUS classifications. DAC8420EPZ provides superior INL/DNL specifications (±0.5, ±0.25 LSB), while DAC8420FPZ maintains INL specification alignment with the original part.

For Surface-Mount Alternative:

DAC7614UB, manufactured by Burr Brown, provides functional equivalence in a 16-SOIC surface-mount package. This option is suitable for new PCB designs utilizing surface-mount assembly processes. The DAC7614UB maintains identical electrical specifications to the DAC7614PB, including 10µs settling time and ±1 LSB INL/DNL performance, with active product status.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 export classification, ensuring regulatory alignment with the original component.

Frequently Asked Questions (FAQ)

Q: Can DAC7614UB replace DAC7614PB in existing through-hole PCB designs?

A: No. DAC7614UB uses a 16-SOIC surface-mount package (0.295" width) versus the DAC7614PB's 16-DIP through-hole package (0.300" width). Physical board layout modifications are required. For direct through-hole replacement, use DAC8420EPZ or DAC8420FPZ.

Q: What is the primary difference between DAC8420EPZ and DAC8420FPZ?

A: Both parts are pin-compatible 16-DIP replacements with identical package and mounting specifications. The primary difference is INL specification: DAC8420EPZ provides ±0.5 LSB INL, while DAC8420FPZ provides ±1 LSB INL. Both maintain ±0.25 LSB DNL performance. Selection depends on application linearity requirements.

Q: Are the DAC8420 series parts compatible with ±5V analog supply designs?

A: Yes. The DAC8420 series supports analog supply range of 5V ~ 15V and -15V, which includes the ±5V requirement of the original DAC7614PB design. No supply circuit modifications are necessary for compatibility.

Q: Does the extended analog supply voltage range of DAC8420 parts affect pin compatibility?

A: No. Pin configuration and signal interface remain identical. The extended supply range is an enhanced capability that does not impact existing circuit designs operating at ±5V.

Q: What settling time difference exists between DAC7614PB and DAC8420 substitutes?

A: DAC7614PB specifies 10µs settling time, while DAC8420EPZ and DAC8420FPZ specify 13µs typical settling time. This 3µs difference must be evaluated against application timing requirements. For applications requiring 10µs or faster settling, DAC7614UB maintains the original 10µs specification.

Q: Are all substitute parts ROHS3 compliant?

A: DAC8420EPZ and DAC8420FPZ are ROHS3 compliant. DAC7614UB compliance status is not specified in available documentation. Verify with supplier for applications requiring confirmed ROHS3 compliance.