SN74LVC1G19DRLRG4 Equivalent & Substitute Parts

Part Overview

The SN74LVC1G19DRLRG4 is a single 1:2 decoder/demultiplexer logic IC manufactured by Texas Instruments, housed in a SOT-563/SOT-666 package. This component is classified as discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design support and procurement. The part operates across a wide voltage range (1.65V to 5.5V) and maintains consistent output drive capability, making it suitable for low-voltage digital logic applications requiring demultiplexing functionality.

Key Parameters

Parameter	Value
Type	Decoder/Demultiplexer
Circuit Configuration	1 x 1:2
Independent Circuits	1
Output Current (High/Low)	32mA / 32mA
Supply Voltage Range	1.65V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package Type	SOT-563, SOT-666
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the SN74LVC1G19DRLRG4 is determined by the following critical parameters:

Functional equivalence: 1 x 1:2 decoder/demultiplexer configuration with single independent circuit
Electrical compatibility: Output current capability of 32mA (high and low), supply voltage range of 1.65V to 5.5V minimum
Thermal compatibility: Operating temperature range of -40°C to 85°C or better
Package compatibility: Surface mount packages including SOT-563, SOT-666, 6-TSSOP, or SC-88/SOT-363
Compliance alignment: ROHS3 compliance and MSL rating of 1 or better

The substitute parts listed below meet these criteria and are available from active inventory sources.

Parameter Comparison

Parameter	SN74LVC1G19DRLRG4	SN74LVC1G19DRLR	74LVC1G19GW,125	NL7SZ19DFT2G
Manufacturer	Texas Instruments	Texas Instruments	Nexperia USA Inc.	onsemi
Type	Decoder/Demultiplexer 1x1:2	Decoder/Demultiplexer 1x1:2	Decoder/Demultiplexer 1x1:2	Decoder/Demultiplexer 1x1:2
Output Current (High/Low)	32mA / 32mA	32mA / 32mA	32mA / 32mA	32mA / 32mA
Supply Voltage Range	1.65V ~ 5.5V	1.65V ~ 5.5V	1.65V ~ 5.5V	1.65V ~ 5.5V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 85°C
Package Type	SOT-563, SOT-666	SOT-563, SOT-666	6-TSSOP, SC-88, SOT-363	SC-88, SOT-363
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Discontinued at DiGi Electronics	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

SN74LVC1G19DRLR (Texas Instruments): This parametric equivalent maintains identical electrical specifications and package compatibility with the original part. Product status is active with substantial inventory availability (7364 pcs), making it the primary direct replacement for the discontinued SN74LVC1G19DRLRG4. Packaging is available in Cut Tape and Digi-Reel formats.

74LVC1G19GW,125 (Nexperia USA Inc.): This upgrade option provides extended operating temperature range (-40°C to 125°C) compared to the original specification. Package format differs (6-TSSOP vs. SOT-563/SOT-666), requiring PCB layout verification. Product status is active with high inventory availability (8864 pcs). Selection of this part is appropriate when thermal margin enhancement is required.

NL7SZ19DFT2G (onsemi): This manufacturer-recommended alternative operates within the original temperature specification and provides equivalent electrical performance. Package format is SC-88/SOT-363, requiring PCB footprint verification. Product status is active with the highest inventory availability (105100 pcs). This option is suitable when onsemi supply chain preference or cost optimization is a factor.

Frequently Asked Questions (FAQ)

Q: Can I directly replace SN74LVC1G19DRLRG4 with SN74LVC1G19DRLR without PCB modification?

A: Yes. Both parts share identical package types (SOT-563, SOT-666) and electrical specifications, enabling direct pin-compatible substitution without PCB layout changes.

Q: What is the primary difference between 74LVC1G19GW,125 and the original part?

A: The 74LVC1G19GW,125 extends the maximum operating temperature to 125°C (versus 85°C for the original). The package format is 6-TSSOP instead of SOT-563/SOT-666, requiring PCB footprint verification before implementation.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts meet ROHS3 compliance and carry MSL rating 1 (unlimited moisture sensitivity level), matching the original part's environmental certifications.

Q: Which substitute offers the best inventory availability?

A: The NL7SZ19DFT2G from onsemi has the highest inventory level at 105100 pcs. However, this part uses an SC-88/SOT-363 package, requiring PCB layout verification compared to the original SOT-563/SOT-666 package.

Q: Do all substitutes maintain the same output current specifications?

A: Yes. All substitute parts provide 32mA output current capability for both high and low states, matching the original SN74LVC1G19DRLRG4 specification.

Q: What supply voltage range do the substitute parts support?

A: All substitute parts operate across the identical 1.65V to 5.5V supply voltage range as the original part, ensuring compatibility with existing power supply designs.

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