74LVC841ADB,112 Equivalent & Substitute Parts

Part Overview

The 74LVC841ADB,112 is a D-Type Transparent Latch logic IC manufactured by NXP USA Inc., featuring a 10:10 circuit configuration with tri-state output capability in a 24-SSOP package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates across a 2.7V to 3.6V supply voltage range with a propagation delay of 1.5ns and supports output currents of 24mA in both high and low states.

Substiute Parts

74LVC841ADB,112

NXP USA Inc.In Stock: 71474LVC841ADB,112 Datasheet

Current PartRFQ

SN74LVC841ADBR

Texas InstrumentsIn Stock: 764SN74LVC841ADBR Datasheet

MFR RecommendedRFQ

SN74LVC841APW

Texas InstrumentsIn Stock: 788SN74LVC841APW Datasheet

MFR RecommendedRFQ

SN74LVC841APWR

Texas InstrumentsIn Stock: 18236SN74LVC841APWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74LVC841ADB,112 are qualified based on the following critical parameters:

• Logic Type: D-Type Transparent Latch (identical across all substitutes)
• Circuit Configuration: 10:10 (identical across all substitutes)
• Output Type: Tri-State (identical across all substitutes)
• Independent Circuits: 1 (identical across all substitutes)
• Output Current Capability: 24mA high and low (identical across all substitutes)
• RoHS3 Compliance: Required for regulatory alignment
• MSL Rating: 1 (Unlimited) for moisture sensitivity
• Mounting Type: Surface Mount (identical across all substitutes)

The substitute parts listed below maintain functional equivalence through identical logic architecture and electrical performance characteristics. Variations in supply voltage range, propagation delay, operating temperature limits, and package form factor are noted in the comparison table and must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts are active products from Texas Instruments, providing long-term availability and supply chain stability compared to the obsolete NXP part. Selection among the three Texas Instruments alternatives depends on specific application constraints:

SN74LVC841ADBR maintains the original 24-SSOP package footprint, enabling direct PCB layout compatibility with existing designs. This part is recommended for applications where board redesign is not feasible.

SN74LVC841APW and SN74LVC841APWR utilize the 24-TSSOP package, which features a narrower 4.40mm width compared to the 5.30mm SSOP variant. Both parts require PCB layout modification but offer improved thermal performance and reduced board space. The APWR variant is supplied in Tape & Reel format, suitable for high-volume automated assembly operations.

All substitute parts meet ROHS3 compliance and MSL Level 1 requirements. The extended supply voltage range (1.65V minimum) of Texas Instruments parts provides additional design flexibility for low-voltage applications. Operating temperature limits are reduced to -40°C to 85°C, which must be verified against application requirements if operation above 85°C is necessary. Propagation delay increases from 1.5ns to 2.7ns; timing-critical applications must validate this specification against system clock frequencies and setup/hold time margins.

Frequently Asked Questions (FAQ)

Q: Can SN74LVC841ADBR be used as a direct replacement for 74LVC841ADB,112?

A: Yes. Both parts share identical 24-SSOP package dimensions (0.209" × 5.30mm width), logic type, circuit configuration, and output current specifications. No PCB layout modifications are required. However, the reduced operating temperature range (-40°C to 85°C versus -40°C to 125°C) and increased propagation delay (2.7ns versus 1.5ns) must be verified for your application.

Q: What is the difference between SN74LVC841APW and SN74LVC841APWR?

A: Both parts are functionally identical with the same electrical specifications. The primary difference is packaging format: APW is supplied in Tube, while APWR is supplied in Tape & Reel (TR). Tape & Reel format is optimized for automated pick-and-place assembly in high-volume production. Tube format is suitable for manual assembly or lower-volume applications.

Q: Are the 24-TSSOP variants (APW and APWR) pin-compatible with the 24-SSOP original part?

A: Yes, both package types are pin-compatible. The 24-TSSOP package has a narrower body width (4.40mm versus 5.30mm) but maintains identical pin pitch and pinout. PCB layout modifications are required to accommodate the different package footprint, but no schematic changes are necessary.

Q: What is the impact of the increased propagation delay in Texas Instruments substitutes?

A: The propagation delay increases from 1.5ns to 2.7ns. For most general-purpose latch applications, this difference is negligible. However, in timing-critical designs operating at high clock frequencies, the additional 1.2ns delay must be evaluated against system setup and hold time requirements to ensure proper operation.

Q: Can these parts operate below 2.7V?

A: The original 74LVC841ADB,112 specifies a minimum supply voltage of 2.7V. Texas Instruments substitutes extend this to 1.65V minimum, enabling operation in lower-voltage applications. If your design operates between 1.65V and 2.7V, only the Texas Instruments parts are suitable.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The original part and all three substitute parts are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity ratings, meeting current regulatory requirements for electronic component procurement.