74ACT16841DLR Equivalent & Substitute Parts

Part Overview

The 74ACT16841DLR is a D-Type Transparent Latch with 2 independent circuits configured in a 10:10 multiplexing arrangement. This component features tri-state output capability and operates within a 4.5V to 5.5V supply voltage range. The device is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations. The 56-SSOP surface mount package provides compact integration for high-density applications.

Substiute Parts

74ACT16841DLR

Texas InstrumentsIn Stock: 85974ACT16841DLR Datasheet

Current PartRFQ

SN74ALVCH16841DLR

Texas InstrumentsIn Stock: 2226SN74ALVCH16841DLR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74ACT16841DLR is determined by the following critical parameters:

Functional Equivalence: Both the main part and substitute must implement D-Type Transparent Latch logic with identical circuit configuration (10:10) and dual independent circuits.

Package Compatibility: The 56-BSSOP surface mount package is mandatory for direct board-level replacement without layout modifications.

Output Architecture: Tri-state output capability must be maintained to preserve bus-sharing functionality in the target application.

Electrical Interface: While supply voltage ranges differ between the 74ACT series (4.5V ~ 5.5V) and 74ALVCH series (1.65V ~ 3.6V), the substitute operates within a lower voltage envelope suitable for modern low-power applications. Both maintain identical output current specifications (24mA high/low).

Thermal and Compliance Requirements: Operating temperature range (-40°C ~ 85°C) and RoHS3 compliance are preserved across both parts.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALVCH16841DLR serves as the direct functional substitute for the obsolete 74ACT16841DLR. Both components are manufactured by Texas Instruments and maintain identical logic architecture, circuit configuration, and package specifications.

The substitute part offers active product status, ensuring long-term availability and supply chain continuity. Both parts maintain ROHS3 compliance and identical thermal operating ranges, supporting equivalent environmental performance.

The primary design consideration involves supply voltage compatibility. The 74ALVCH series operates at lower voltage levels (1.65V ~ 3.6V) compared to the 74ACT series (4.5V ~ 5.5V). System designs operating at 5V must incorporate appropriate voltage regulation or level-shifting circuitry when transitioning to the substitute part. The substitute demonstrates superior propagation delay performance (1ns versus 7.7ns), which may provide timing margin improvements in existing applications.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALVCH16841DLR directly replace the 74ACT16841DLR without PCB modifications?

A: Yes, both parts use the identical 56-BSSOP package with matching pinout and footprint. No PCB layout changes are required for physical replacement.

Q: What is the primary difference between these two parts?

A: The 74ALVCH16841DLR operates at lower supply voltages (1.65V ~ 3.6V) compared to the 74ACT16841DLR (4.5V ~ 5.5V). The substitute also provides faster propagation delay (1ns versus 7.7ns). Both maintain identical output current specifications and tri-state functionality.

Q: Is voltage level conversion necessary when substituting these parts?

A: If your system operates at 5V, the 74ACT16841DLR is directly compatible. To use the SN74ALVCH16841DLR in a 5V system, implement appropriate voltage regulation or level-shifting circuitry to maintain the 1.65V ~ 3.6V supply requirement.

Q: Are both parts RoHS compliant?

A: Yes, both the 74ACT16841DLR and SN74ALVCH16841DLR are ROHS3 compliant and REACH unaffected.

Q: Why is the 74ACT16841DLR listed as obsolete?

A: The 74ACT series represents an earlier generation of logic technology. The 74ALVCH series provides improved performance characteristics and lower power consumption, making it the preferred choice for new designs and legacy system support.

Q: Do both parts support the same operating temperature range?

A: Yes, both parts operate across the identical temperature range of -40°C to 85°C, supporting equivalent thermal performance in industrial and commercial applications.