74ALVT16240DL,118 Equivalent & Substitute Parts

Part Overview

The 74ALVT16240DL,118 is a 4-element, 4-bit inverting buffer IC manufactured by NXP USA Inc. in a 48-SSOP package. This logic component features 3-state output capability and operates across dual voltage supply ranges (2.3V–2.7V and 3V–3.6V) with an operating temperature range of -40°C to 85°C. The part is classified as obsolete, making equivalent substitutes necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Logic Type	Buffer, Inverting
Number of Elements	4
Number of Bits per Element	4
Output Type	3-State
Current - Output High / Low	32mA / 64mA
Voltage - Supply	2.3V–2.7V, 3V–3.6V
Operating Temperature	-40°C to 85°C (TA)
Mounting Type	Surface Mount
Package / Case	48-BSSOP (0.295", 7.50mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 74ALVT16240DL,118 is determined by the following critical parameters: logic type (inverting buffer), element and bit configuration (4 elements, 4 bits per element), output type (3-state), output current capability (32mA high / 64mA low), supply voltage range (2.3V–2.7V and 3V–3.6V), and operating temperature range (-40°C to 85°C). Package compatibility and RoHS compliance are secondary considerations that may vary based on application requirements.

Substitutes are grouped into three categories:

Direct Manufacturer Equivalents: Parts maintaining identical electrical specifications and package footprint compatibility.

Manufacturer Recommended Alternatives: Parts with equivalent electrical performance but different package configurations (TSSOP, TVSOP variants).

Parametric Equivalents: Parts meeting core electrical requirements with minor package variations.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Elements / Bits	Output Type	Current (High/Low)	Voltage Supply	Temp Range	Package	Status
74ALVT16240DL,118	NXP USA Inc.	Buffer, Inverting	4 / 4	3-State	32mA / 64mA	2.3V–2.7V, 3V–3.6V	-40°C to 85°C	48-BSSOP	Obsolete
SN74ALVTH16240DL	Texas Instruments	Buffer, Inverting	4 / 4	3-State	32mA / 64mA	2.3V–2.7V, 3V–3.6V	-40°C to 85°C	48-BSSOP	Obsolete
SN74ALVTH16240GR	Texas Instruments	Buffer, Inverting	4 / 4	3-State	32mA / 64mA	2.3V–2.7V, 3V–3.6V	-40°C to 85°C	48-TSSOP	Obsolete
SN74ALVTH16240VR	Texas Instruments	Buffer, Inverting	4 / 4	3-State	32mA / 64mA	2.3V–2.7V, 3V–3.6V	-40°C to 85°C	48-TFSOP	Discontinued
SN74ALVTH16240DLR	Texas Instruments	Buffer, Inverting	4 / 4	3-State	32mA / 64mA	2.3V–2.7V, 3V–3.6V	-40°C to 85°C	48-BSSOP	Discontinued
SN74LVC646APW	Texas Instruments	Transceiver, Non-Inverting	1 / 8	3-State	24mA / 24mA	1.65V–3.6V	-40°C to 85°C	24-TSSOP	Active

Engineering Selection Recommendations

Primary Selection: SN74ALVTH16240DL (Texas Instruments) is the direct equivalent substitute, maintaining identical electrical specifications, output current ratings, and 48-BSSOP package footprint. This part is ROHS3 compliant and carries MSL 1 rating, matching the original part's environmental compliance profile.

Alternative Package Options: SN74ALVTH16240GR (48-TSSOP) and SN74ALVTH16240VR (48-TFSOP) provide equivalent electrical performance with reduced package footprints. These variants are suitable for space-constrained applications where PCB layout permits package substitution. Verify PCB trace routing compatibility before implementation.

Parametric Equivalent: SN74ALVTH16240DLR maintains identical electrical specifications and 48-BSSOP package compatibility. This part is suitable as a secondary alternative when primary substitutes are unavailable.

Limited Compatibility: SN74LVC646APW differs fundamentally in logic type (non-inverting transceiver vs. inverting buffer), element configuration (1 element, 8 bits vs. 4 elements, 4 bits), and output current capability (24mA vs. 32mA/64mA). This part is not a functional substitute for the 74ALVT16240DL,118 and should not be selected for direct replacement.

Frequently Asked Questions (FAQ)

Q: Can SN74ALVTH16240DL directly replace 74ALVT16240DL,118 without PCB modifications?

A: Yes. The SN74ALVTH16240DL maintains identical electrical specifications, output current ratings, supply voltage ranges, and 48-BSSOP package footprint. No PCB layout changes are required.

Q: What is the difference between 48-BSSOP, 48-TSSOP, and 48-TFSOP packages?

A: These are surface-mount package variants with different physical dimensions. 48-BSSOP (0.295" width) and 48-TSSOP (0.240" width) are commonly used for this logic family. 48-TFSOP (0.173" width) is the most compact variant. Package selection depends on PCB layout constraints and available board space. Verify pad pitch and trace routing compatibility before substitution.

Q: Why is SN74LVC646APW listed as a substitute if it has different specifications?

A: SN74LVC646APW is included in the provided substitute list but is not functionally equivalent. It operates as a non-inverting transceiver with different element and bit configuration. This part should not be selected for direct replacement of the 74ALVT16240DL,118.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance and MSL 1 rating, matching the environmental and regulatory requirements of the original 74ALVT16240DL,118.

Q: What is the current availability status of these substitutes?

A: SN74ALVTH16240DL and SN74ALVTH16240DLR are classified as obsolete or discontinued. SN74ALVTH16240GR and SN74ALVTH16240VR are also obsolete or discontinued at DiGi Electronics. SN74LVC646APW maintains active product status. Verify current inventory with authorized distributors before procurement.

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