PI74AVC16834A Equivalent & Substitute Parts

Part Overview

The PI74AVC16834A is an 18-bit universal bus driver manufactured by Diodes Incorporated, housed in a 56-TSSOP package. This logic IC is designed for signal buffering and bus driving applications requiring low-voltage operation across 1.65V to 3.6V supply ranges. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

PI74AVC16834A

Diodes IncorporatedIn Stock: 1041PI74AVC16834A Datasheet

Current PartRFQ

SN74AVC16834DGGR

Texas InstrumentsIn Stock: 3330SN74AVC16834DGGR Datasheet

MFR RecommendedRFQ

SN74AVC16834DGVR

Texas InstrumentsIn Stock: 1102SN74AVC16834DGVR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PI74AVC16834A is determined by the following critical parameters:

• Logic Type: Universal Bus Driver (18-Bit configuration)
• Output Drive Capability: 12mA source and sink current
• Supply Voltage Range: Minimum 1.65V operation required
• Operating Temperature Range: -40°C to 85°C
• Package Type: 56-TSSOP or 56-TVSOP (both 56-pin configurations)
• Mounting: Surface mount technology

Two active substitute parts from Texas Instruments meet these criteria through the SN74AVC16834 base product line. Both maintain identical logic functionality, output drive specifications, and thermal operating ranges. Differences exist in package width and supply voltage floor specifications, which are documented in the parameter comparison table below.

Parameter Comparison

Engineering Selection Recommendations

Both SN74AVC16834DGGR and SN74AVC16834DGVR are functionally equivalent substitutes for the obsolete PI74AVC16834A. Selection between these two options depends on PCB layout constraints:

SN74AVC16834DGGR maintains the original 56-TSSOP package footprint (6.10mm width), providing direct mechanical compatibility with existing board designs. This part is ROHS3 compliant and carries active product status from Texas Instruments.

SN74AVC16834DGVR uses a narrower 56-TVSOP package (4.40mm width), reducing board real estate requirements. This variant also maintains ROHS3 compliance and active status. PCB layout modifications are required for this option due to the different package footprint.

Both substitutes offer improved supply voltage floor specification (1.4V minimum versus 1.65V minimum), providing enhanced low-voltage operation capability. Both are ROHS3 compliant, addressing environmental and regulatory requirements absent in the original part.

Frequently Asked Questions (FAQ)

Q: Can SN74AVC16834DGGR and SN74AVC16834DGVR be used interchangeably with PI74AVC16834A?

A: Both Texas Instruments parts are functionally equivalent in logic operation, output drive capability, and thermal performance. Mechanical compatibility depends on package selection. SN74AVC16834DGGR uses the same 56-TSSOP footprint as the original. SN74AVC16834DGVR requires PCB redesign due to its narrower 56-TVSOP package.

Q: What is the difference between 56-TSSOP and 56-TVSOP packages?

A: Both are 56-pin thin shrink small outline packages. The primary difference is package width: TSSOP measures 6.10mm, while TVSOP measures 4.40mm. Pin pitch and electrical characteristics remain identical. Package selection affects PCB footprint and board layout.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both SN74AVC16834DGGR and SN74AVC16834DGVR are ROHS3 compliant. The original PI74AVC16834A is RoHS non-compliant. This represents an improvement for new designs subject to environmental regulations.

Q: What is the supply voltage difference between the original and substitutes?

A: The original PI74AVC16834A operates from 1.65V to 3.6V. Both substitute parts operate from 1.4V to 3.6V. The lower minimum voltage floor in the substitutes provides additional operational margin in low-voltage applications.

Q: Are moisture sensitivity levels identical across all three parts?

A: Yes. All three parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage or handling.