ADS774HIDW Equivalent & Substitute Parts

Part Overview

The ADS774HIDW is a 12-bit Analog to Digital Converter (ADC) manufactured by Texas Instruments, designed for single-ended input data acquisition applications. It features a Successive Approximation Register (SAR) architecture with a sampling rate of 125 kSPS and operates from a 5V supply with external or internal reference options. The device is housed in a 28-SOIC surface mount package.

This part carries a "Not For New Designs" product status, making identification of equivalent alternatives essential for ongoing production support, maintenance, and legacy system repairs where component availability or supply chain continuity is required.

Substiute Parts

ADS774HIDW

Texas InstrumentsIn Stock: 1145ADS774HIDW Datasheet

Current PartRFQ

ADS774HIBDW

Texas InstrumentsIn Stock: 1911ADS774HIBDW Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ADS774HIDW is determined by strict equivalence across the following critical parameters:

• Resolution & Sampling: 12-bit resolution with 125 kSPS sampling rate
• Input Configuration: Single-ended input with 1 ADC channel
• Interface & Architecture: Parallel data interface with SAR conversion architecture
• Power Supply Requirements: 5V digital supply with dual analog supply rails (-16.5V ~ 5.5V)
• Reference Options: Support for both external and internal voltage references
• Package Compatibility: 28-SOIC surface mount package with identical pinout and thermal characteristics
• Environmental & Compliance: Operating range -40°C to 85°C, ROHS3 compliance, MSL 2 rating

The ADS774HIBDW meets all these criteria as a direct parametric equivalent manufactured by Texas Instruments under the same ADS774 base product family.

Parameter Comparison

Engineering Selection Recommendations

The ADS774HIBDW is a direct parametric equivalent to the ADS774HIDW and is suitable for substitution in applications requiring identical electrical and mechanical specifications. Both devices share the same base product number (ADS774) and are manufactured by Texas Instruments under equivalent design specifications.

Selection between these parts should be based on:

• Availability: The ADS774HIBDW currently has higher inventory (1900 pcs) compared to the ADS774HIDW (1076 pcs), making it preferable for immediate procurement needs.
• Compliance Status: Both parts maintain ROHS3 compliance and identical environmental ratings, ensuring regulatory compatibility in existing designs.
• Supply Chain Continuity: Given the "Not For New Designs" status of both variants, either part provides equivalent support for legacy system maintenance and production continuation.

No design modifications, PCB layout changes, or firmware adjustments are required when substituting between these parts.

Frequently Asked Questions (FAQ)

Q: Can the ADS774HIBDW be used as a direct replacement for the ADS774HIDW?

A: Yes. The ADS774HIBDW is a parametric equivalent with identical electrical specifications, pinout, package dimensions, and performance characteristics. No circuit modifications are required.

Q: Are there any differences in pin configuration between these parts?

A: No. Both devices use the 28-SOIC package with identical pinout and signal assignments. PCB layouts designed for the ADS774HIDW are fully compatible with the ADS774HIBDW.

Q: Do both parts support the same supply voltage ranges?

A: Yes. Both the ADS774HIDW and ADS774HIBDW operate with identical analog supply ranges (-16.5V ~ 5.5V) and digital supply requirements (5V), with support for external or internal voltage references.

Q: What is the significance of the "Not For New Designs" status?

A: This status indicates that Texas Instruments is not recommending these parts for new product development. However, both parts remain suitable for production support, maintenance, and repair of existing systems. Equivalent alternatives from the current product portfolio should be evaluated for new designs.

Q: Are moisture sensitivity and storage requirements identical?

A: Yes. Both parts carry an MSL rating of 2 (1 Year), requiring identical handling, storage, and reflow procedures to prevent moisture-related failures.

Q: Which part should be selected for immediate procurement?

A: The ADS774HIBDW is recommended due to higher current inventory availability (1900 pcs vs. 1076 pcs), ensuring faster delivery and supply chain reliability.