74ABT841DB,112 Equivalent & Substitute Parts

Part Overview

The 74ABT841DB,112 is a D-Type Transparent Latch logic IC manufactured by NXP USA Inc., designed for 10-bit bus interface applications with tri-state output capability. This component operates within the 4.5V to 5.5V supply voltage range and is housed in a 24-SSOP package. The part is currently listed as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

74ABT841DB,112

NXP USA Inc.In Stock: 77874ABT841DB,112 Datasheet

Current PartRFQ

SN74ABT841ADBR

Texas InstrumentsIn Stock: 1014SN74ABT841ADBR Datasheet

DirectRFQ

SN74ABT841APW

Texas InstrumentsIn Stock: 974SN74ABT841APW Datasheet

MFR RecommendedRFQ

SN74ABT841APWR

Texas InstrumentsIn Stock: 1047SN74ABT841APWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74ABT841DB,112 is determined by strict equivalence across the following critical parameters:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 10:10
• Output Type: Tri-State
• Voltage - Supply: 4.5V ~ 5.5V
• Independent Circuits: 1
• Operating Temperature: -40°C ~ 85°C
• Propagation Delay: 4ns or lower
• Output Current Capability: 32mA (High), 64mA (Low)
• Mounting Type: Surface Mount
• RoHS Compliance: ROHS3 Compliant

The substitute parts identified below maintain functional and electrical equivalence within these parameters. Package variations (SSOP vs. TSSOP) and packaging formats (Tape & Reel vs. Tube) represent mechanical and logistical differences that do not affect electrical performance when PCB layout accommodates the specified package dimensions.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts—SN74ABT841ADBR, SN74ABT841APW, and SN74ABT841APWR—are manufactured by Texas Instruments and maintain active product status, ensuring long-term availability and supply chain stability compared to the obsolete NXP part.

SN74ABT841ADBR is the direct electrical and package equivalent, utilizing the same 24-SSOP package footprint as the original 74ABT841DB,112. This option requires no PCB layout modifications and provides the most straightforward replacement path.

SN74ABT841APW and SN74ABT841APWR employ the 24-TSSOP package, which features a narrower body width (4.40mm vs. 5.30mm). These variants require PCB layout adjustment to accommodate the different package dimensions but offer identical electrical performance and are available in standard packaging formats (Tube and Tape & Reel respectively).

All substitute parts comply with ROHS3 and maintain MSL Level 1 classification, ensuring compatibility with standard manufacturing and storage protocols. Propagation delay specifications (4.1ns) remain within acceptable tolerance relative to the original part (4ns), with no functional impact on system timing.

Frequently Asked Questions (FAQ)

Q: Can SN74ABT841ADBR be used as a direct replacement for 74ABT841DB,112?

A: Yes. SN74ABT841ADBR is electrically and mechanically equivalent. Both parts use the 24-SSOP package with identical footprint dimensions (0.209" × 5.30mm width), allowing direct PCB substitution without layout modifications.

Q: What is the difference between SN74ABT841ADBR and SN74ABT841APWR?

A: Both parts are electrically identical D-Type Transparent Latches with 10:10 configuration and tri-state output. The primary difference is the package type: SN74ABT841ADBR uses 24-SSOP (0.209" width), while SN74ABT841APWR uses 24-TSSOP (0.173" width). The TSSOP variant requires PCB layout modification to accommodate the narrower package body. Packaging format also differs: SN74ABT841ADBR is supplied in Tape & Reel, while SN74ABT841APWR is supplied in Tube.

Q: Are there any timing differences between the original part and the substitutes?

A: The original 74ABT841DB,112 specifies 4ns propagation delay, while all Texas Instruments substitutes specify 4.1ns. This 0.1ns difference is negligible for standard logic applications and does not affect system functionality or timing margins in typical bus interface circuits.

Q: Do all substitute parts meet the same compliance standards as the original?

A: Yes. All substitute parts are ROHS3 compliant, REACH unaffected, and classified as MSL Level 1 (Unlimited moisture sensitivity level). Compliance certifications are identical across all options.

Q: Which substitute part should be selected for new designs?

A: For new designs, SN74ABT841APWR (24-TSSOP, Tape & Reel) is recommended due to active product status, standard packaging format, and availability. If existing PCB layouts require the 24-SSOP footprint, SN74ABT841ADBR provides equivalent performance with no layout modifications required.

Q: Can the 24-TSSOP variants be used on existing PCBs designed for 24-SSOP?

A: No. The 24-TSSOP package (0.173" width) has different footprint dimensions than 24-SSOP (0.209" width). PCB layout modification is required to accommodate the narrower package body. Direct substitution on existing SSOP-designed boards is not possible.