SN74LVC1G02MDCKREP Equivalent & Substitute Parts

Part Overview

The SN74LVC1G02MDCKREP is a single-channel NOR gate logic IC manufactured by Texas Instruments, housed in an SC-70-5 package. This component is classified as Active status and operates across a wide supply voltage range of 1.65V to 5.5V, making it suitable for both legacy and modern low-voltage digital applications. The part is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1), ensuring compatibility with current manufacturing standards.

Equivalent and substitute parts are necessary when the primary part experiences supply constraints, lead time extensions, or when design requirements necessitate alternative packaging formats or performance characteristics while maintaining functional compatibility.

Key Parameters

Parameter	Value
Logic Type	NOR Gate
Number of Circuits	1
Number of Inputs	2
Voltage - Supply	1.65V ~ 5.5V
Current - Quiescent (Max)	10 µA
Current - Output High, Low	32mA, 32mA
Input Logic Level - Low	0.7V ~ 0.8V
Input Logic Level - High	1.7V ~ 2V
Max Propagation Delay @ V, Max CL	5ns @ 5V, 50pF
Operating Temperature	-55°C ~ 125°C
Package / Case	5-TSSOP, SC-70-5, SOT-353
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SN74LVC1G02MDCKREP is determined by the following critical parameters:

Logic Function: All substitutes must implement a single-channel, 2-input NOR gate
Supply Voltage Range: Minimum 1.65V to 5.5V compatibility required
Output Drive Capability: 32mA output current (high and low) maintained across all substitutes
Package Compatibility: SC-70-5, 5-TSSOP, or SOT-353 packages acceptable for direct board-level substitution
Input Logic Levels: 0.7V ~ 0.8V (low) and 1.7V ~ 2V (high) threshold compatibility
Operating Temperature Range: Minimum -40°C to 125°C or wider
Compliance: RoHS3 and REACH compliance required

Substitutes are grouped by packaging format and manufacturer, with performance variations noted in propagation delay and quiescent current specifications.

Parameter Comparison

Parameter	SN74LVC1G02MDCKREP (TI)	NL17SZ02DFT2G (onsemi)	74LVC1G02GV,125 (Nexperia)	74LVC1G02GW,125 (Nexperia)	74LVC1G02SE-7 (Diodes)	74LVCE1G02SE-7 (Diodes)	NC7SZ02M5X (onsemi)	NC7SZ02P5X (onsemi)
Manufacturer	Texas Instruments	onsemi	Nexperia USA Inc.	Nexperia USA Inc.	Diodes Incorporated	Diodes Incorporated	onsemi	onsemi
Logic Type	NOR Gate	NOR Gate	NOR Gate	NOR Gate	NOR Gate	NOR Gate	NOR Gate	NOR Gate
Number of Circuits	1	1	1	1	1	1	1	1
Number of Inputs	2	2	2	2	2	2	2	2
Voltage - Supply	1.65V ~ 5.5V	1.65V ~ 5.5V	1.65V ~ 5.5V	1.65V ~ 5.5V	1.65V ~ 5.5V	1.4V ~ 5.5V	1.65V ~ 5.5V	1.65V ~ 5.5V
Current - Quiescent (Max)	10 µA	1 µA	4 µA	4 µA	200 µA	10 µA	2 µA	2 µA
Current - Output High, Low	32mA, 32mA	32mA, 32mA	32mA, 32mA	32mA, 32mA	32mA, 32mA	32mA, 32mA	32mA, 32mA	32mA, 32mA
Input Logic Level - Low	0.7V ~ 0.8V	—	0.7V ~ 0.8V	0.7V ~ 0.8V	0.7V ~ 0.8V	0.7V ~ 0.8V	—	—
Input Logic Level - High	1.7V ~ 2V	—	1.7V ~ 2V	1.7V ~ 2V	1.7V ~ 2V	1.7V ~ 2V	—	—
Max Propagation Delay @ V, Max CL	5ns @ 5V, 50pF	4.3ns @ 5V, 50pF	4ns @ 5V, 50pF	4ns @ 5V, 50pF	1.7ns @ 5V, 50pF	3.6ns @ 5V, 50pF	4.3ns @ 5V, 50pF	4.3ns @ 5V, 50pF
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	5-TSSOP, SC-70-5, SOT-353	5-TSSOP, SC-70-5, SOT-353	SC-74A, SOT-753	5-TSSOP, SC-70-5, SOT-353	5-TSSOP, SC-70-5, SOT-353	5-TSSOP, SC-70-5, SOT-353	SC-74A, SOT-753	5-TSSOP, SC-70-5, SOT-353
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and full RoHS3 compliance with REACH unaffected designation, ensuring regulatory compatibility with current manufacturing and environmental standards.

Direct Package Substitutes (SC-70-5 / 5-TSSOP / SOT-353): NL17SZ02DFT2G, 74LVC1G02GW,125, 74LVC1G02SE-7, 74LVCE1G02SE-7, and NC7SZ02P5X are pin-compatible and footprint-compatible with the SN74LVC1G02MDCKREP. These parts support identical board-level placement without layout modification.

Alternative Package Substitutes (SC-74A / SOT-753): 74LVC1G02GV,125 and NC7SZ02M5X utilize different package formats and require PCB layout adjustment. These are suitable only when board redesign is feasible.

Temperature Range Considerations: The SN74LVC1G02MDCKREP operates from -55°C to 125°C. Substitutes 74LVC1G02GV,125, 74LVC1G02GW,125, 74LVC1G02SE-7, 74LVCE1G02SE-7, NC7SZ02M5X, and NC7SZ02P5X operate from -40°C to 125°C or -40°C to 85°C. Applications requiring extended low-temperature operation below -40°C must retain the original part or NL17SZ02DFT2G.

Quiescent Current Profile: For ultra-low-power applications, NL17SZ02DFT2G (1 µA), NC7SZ02M5X (2 µA), and NC7SZ02P5X (2 µA) offer superior power efficiency compared to the original 10 µA specification. The 74LVC1G02SE-7 exhibits elevated quiescent current (200 µA) and is suitable only when power consumption is not a design constraint.

Propagation Delay: The 74LVC1G02SE-7 provides the fastest propagation delay at 1.7ns, while all other substitutes range from 4ns to 5ns. Timing-critical applications should evaluate specific delay requirements against datasheet specifications.

Frequently Asked Questions (FAQ)

Q: Can I substitute the SN74LVC1G02MDCKREP with any of these parts without PCB modification?

A: Direct substitution without PCB modification is possible with NL17SZ02DFT2G, 74LVC1G02GW,125, 74LVC1G02SE-7, 74LVCE1G02SE-7, and NC7SZ02P5X, as these maintain SC-70-5 or 5-TSSOP packaging. The 74LVC1G02GV,125 and NC7SZ02M5X use SC-74A or SOT-753 packages and require layout changes.

Q: What is the primary difference between the 74LVC and 74LVCE series?

A: The 74LVCE1G02SE-7 supports a lower minimum supply voltage of 1.4V compared to the 74LVC series minimum of 1.65V. The 74LVCE variant is suitable for ultra-low-voltage applications but operates at a reduced maximum temperature of 85°C versus 125°C for standard 74LVC parts.

Q: Are all substitutes RoHS3 compliant?

A: Yes, all listed substitute parts are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the compliance profile of the SN74LVC1G02MDCKREP.

Q: Which substitute offers the best power efficiency?

A: The NL17SZ02DFT2G, NC7SZ02M5X, and NC7SZ02P5X offer the lowest quiescent current specifications at 1 µA, 2 µA, and 2 µA respectively, compared to the original 10 µA. These are preferred for battery-powered or energy-constrained applications.

Q: Can I use the 74LVC1G02SE-7 in a temperature-critical application requiring -55°C operation?

A: No. The 74LVC1G02SE-7 operates from -40°C to 125°C. For applications requiring -55°C minimum temperature, use the SN74LVC1G02MDCKREP or NL17SZ02DFT2G, both rated to -55°C.

Q: What is the significance of the propagation delay differences?

A: Propagation delay ranges from 1.7ns to 5ns across the substitute list. For timing-sensitive digital logic circuits, verify that the selected substitute's propagation delay meets the system timing budget. The 74LVC1G02SE-7 provides the fastest response, while the original SN74LVC1G02MDCKREP operates at 5ns.

Q: Are input logic level thresholds identical across all substitutes?

A: No. The onsemi 7SZ series (NL17SZ02DFT2G, NC7SZ02M5X, NC7SZ02P5X) do not specify input logic level thresholds in the provided data. For applications with marginal input signal levels, use parts with explicitly defined thresholds: SN74LVC1G02MDCKREP, 74LVC1G02GV,125, 74LVC1G02GW,125, 74LVC1G02SE-7, or 74LVCE1G02SE-7.

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