74ALVT16240DL,112 Equivalent & Substitute Parts

Part Overview

The 74ALVT16240DL,112 is a 4-element, 4-bit inverting buffer IC manufactured by NXP USA Inc. in a 48-SSOP package. This component provides 3-state output capability with dual supply voltage support (2.3V–2.7V and 3V–3.6V) and operates across the industrial temperature range of -40°C to 85°C. The part is classified as obsolete, making equivalent substitutes necessary for ongoing design support and procurement.

Substiute Parts

74ALVT16240DL,112

NXP USA Inc.In Stock: 96174ALVT16240DL,112 Datasheet

Current PartRFQ

SN74ALVTH16240DL

Texas InstrumentsIn Stock: 1376SN74ALVTH16240DL Datasheet

DirectRFQ

SN74ALVTH16240DLR

Texas InstrumentsIn Stock: 980SN74ALVTH16240DLR Datasheet

MFR RecommendedRFQ

SN74ALVTH16240GR

Texas InstrumentsIn Stock: 1063SN74ALVTH16240GR Datasheet

MFR RecommendedRFQ

SN74ALVTH16240VR

Texas InstrumentsIn Stock: 3150SN74ALVTH16240VR Datasheet

MFR RecommendedRFQ

SN74LVC646ADBR

Texas InstrumentsIn Stock: 26359SN74LVC646ADBR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74ALVT16240DL,112 is determined by the following critical parameters:

• Logic Function: Buffer, Inverting with 4 elements and 4 bits per element
• Output Configuration: 3-State output capability
• Electrical Performance: Output current (32mA high / 64mA low) and dual supply voltage range (2.3V–2.7V, 3V–3.6V)
• Operating Conditions: Industrial temperature range (-40°C to 85°C)
• Package Compatibility: 48-pin surface mount packages (SSOP, TSSOP, TVSOP variants)
• Compliance: ROHS3 compliance and MSL Level 1

Substitute parts are grouped into two categories:

Direct Functional Equivalents (SN74ALVTH16240DL, SN74ALVTH16240DLR, SN74ALVTH16240GR): Texas Instruments parts with identical logic function, element count, bit configuration, output type, and electrical specifications. These differ only in package variant (SSOP, TSSOP, TVSOP) and product status.

Functional Alternative (SN74LVC646ADBR): A transceiver-based alternative with different logic type (non-inverting transceiver), element count (1 element), and bit configuration (8 bits per element). This part is included due to its presence in the original substitute list but does not meet the core functional equivalence criteria for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

Recommended Direct Substitutes: SN74ALVTH16240DL, SN74ALVTH16240DLR, and SN74ALVTH16240GR are functionally equivalent to the 74ALVT16240DL,112. All three maintain identical logic function, element configuration, bit count, output current specifications, and supply voltage range. Selection among these three depends on package form factor requirements and PCB layout constraints:

• SN74ALVTH16240DL: 48-BSSOP package (0.295" width) matches the original footprint
• SN74ALVTH16240DLR: 48-BSSOP package, discontinued at DiGi Electronics
• SN74ALVTH16240GR: 48-TSSOP package (0.240" width) for reduced board space

All three are ROHS3 compliant with MSL Level 1 rating. SN74ALVTH16240VR offers the most compact 48-TVSOP package (0.173" width) with identical electrical specifications but is discontinued at DiGi Electronics.

Alternative Consideration: SN74LVC646ADBR is an active product with broader supply voltage support (1.65V–3.6V) and ROHS3 compliance. However, this part is a non-inverting transceiver with 1 element and 8 bits per element, differing fundamentally from the inverting buffer architecture and element configuration of the original part. This part does not provide functional equivalence for direct substitution.

Frequently Asked Questions (FAQ)

Q: Can SN74ALVTH16240DL directly replace 74ALVT16240DL,112 without PCB modifications?

A: Yes. The SN74ALVTH16240DL is a direct functional equivalent with identical logic type, element count, bit configuration, output current, and supply voltage specifications. Both use the 48-BSSOP package with matching pinout and footprint. No circuit modifications are required.

Q: What is the difference between the SN74ALVTH16240 variants (DL, DLR, GR, VR)?

A: The variants differ in package form factor and product status. DL and DLR use 48-BSSOP (0.295" width), GR uses 48-TSSOP (0.240" width), and VR uses 48-TVSOP (0.173" width). All maintain identical electrical specifications. Package selection depends on PCB layout requirements and available inventory.

Q: Why is SN74LVC646ADBR listed as a substitute if it has different specifications?

A: SN74LVC646ADBR is included in the original substitute list but does not meet functional equivalence criteria. It is a non-inverting transceiver with different element count and bit configuration. This part is not recommended for direct substitution unless circuit redesign is acceptable.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (SN74ALVTH16240DL, SN74ALVTH16240DLR, SN74ALVTH16240GR, SN74ALVTH16240VR, and SN74LVC646ADBR) are ROHS3 compliant with MSL Level 1 rating, matching the original part's compliance status.

Q: Which substitute has the best long-term availability?

A: SN74LVC646ADBR is the only active product among the listed substitutes. However, it is not functionally equivalent. Among the direct equivalents, SN74ALVTH16240DL and SN74ALVTH16240GR have higher current inventory levels (1360 and 1047 units respectively) compared to the original part (910 units).

Q: Can I use a narrower package variant (GR or VR) if my PCB layout permits?

A: Yes. SN74ALVTH16240GR (48-TSSOP, 0.240" width) and SN74ALVTH16240VR (48-TVSOP, 0.173" width) are electrically identical to the original part. Package selection is a layout decision. Verify that your PCB design accommodates the different package dimensions and that your assembly process supports the selected package type.