NC7SP04FHX Equivalent & Substitute Parts

Part Overview

The NC7SP04FHX is a single-channel inverter logic IC manufactured by onsemi in the 6-MicroPak2™ package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates across a supply voltage range of 0.9V to 3.6V with a maximum quiescent current of 900 nA and propagation delay of 9.2 ns at 3.3V with 30 pF load.

Key Parameters

Parameter	Value
Logic Type	Inverter
Number of Circuits	1
Number of Inputs	1
Voltage - Supply	0.9V ~ 3.6V
Current - Quiescent (Max)	900 nA
Current - Output High, Low	2.6 mA, 2.6 mA
Max Propagation Delay @ 3.3V, 30pF	9.2 ns
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	6-UFDFN
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the NC7SP04FHX are selected based on the following critical parameters:

Logic Function: Single-channel inverter with one input
Supply Voltage Range: Minimum 0.8V to 3.6V (substitute parts must support the original 0.9V minimum)
Quiescent Current: Maximum 900 nA (substitute parts with lower quiescent current are acceptable)
Output Current Capability: Minimum 2.6 mA per output (substitute parts with equal or greater output current are acceptable)
Propagation Delay: Maximum 9.2 ns at 3.3V with 30 pF load (substitute parts with equal or lower delay are acceptable)
Operating Temperature Range: Minimum -40°C to 85°C
Package Type: Surface mount in 6-pin configurations
Compliance: ROHS3 compliant, REACH unaffected

Two substitute parts meet these criteria: the 74AUP1G04GS,132 from Nexperia USA Inc. and the SN74AUP1G06DRYR from Texas Instruments. Both are active products with superior electrical performance characteristics.

Parameter Comparison

Parameter	NC7SP04FHX (Main)	74AUP1G04GS,132 (Nexperia)	SN74AUP1G06DRYR (TI)
Manufacturer	onsemi	Nexperia USA Inc.	Texas Instruments
Logic Type	Inverter	Inverter	Inverter (Open Drain)
Number of Circuits	1	1	1
Number of Inputs	1	1	1
Voltage - Supply	0.9V ~ 3.6V	0.8V ~ 3.6V	0.8V ~ 3.6V
Current - Quiescent (Max)	900 nA	500 nA	500 nA
Current - Output High, Low	2.6 mA, 2.6 mA	4 mA, 4 mA	-, 4 mA
Max Propagation Delay @ 3.3V, 30pF	9.2 ns	5.4 ns	10.5 ns
Operating Temperature	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	6-UFDFN	6-XFDFN	6-UFDFN
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Both substitute parts are active products with current manufacturing status, ensuring long-term availability and supply chain stability compared to the obsolete NC7SP04FHX.

The 74AUP1G04GS,132 from Nexperia offers superior electrical performance with lower quiescent current (500 nA vs. 900 nA), faster propagation delay (5.4 ns vs. 9.2 ns), and higher output current capability (4 mA vs. 2.6 mA). The extended operating temperature range (-40°C to 125°C) provides additional thermal margin. Package compatibility requires verification due to the 6-XFDFN variant, though both are 6-pin surface mount configurations.

The SN74AUP1G06DRYR from Texas Instruments maintains the same 6-UFDFN package as the original part, enabling direct physical substitution. This part features open-drain output architecture, which differs functionally from the standard inverter output of the NC7SP04FHX. The propagation delay (10.5 ns) exceeds the original specification by 1.3 ns. Quiescent current and output current specifications match the Nexperia alternative.

Both substitute parts maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements equivalent to the original component.

Frequently Asked Questions (FAQ)

Q: Can the 74AUP1G04GS,132 directly replace the NC7SP04FHX in existing designs?

A: The 74AUP1G04GS,132 meets all electrical parameter requirements for substitution. Physical board layout compatibility must be confirmed, as the part uses a 6-XFDFN package variant rather than the original 6-UFDFN. Pin configuration and footprint dimensions require verification before implementation.

Q: What is the functional difference between the NC7SP04FHX and the SN74AUP1G06DRYR?

A: The SN74AUP1G06DRYR features open-drain output architecture, whereas the NC7SP04FHX is a standard inverter with push-pull output. Open-drain outputs require external pull-up resistors for high-level output. This functional difference may impact circuit design depending on the application.

Q: Are both substitute parts suitable for low-power applications?

A: Both substitute parts feature quiescent current specifications of 500 nA, which is lower than the original 900 nA. Both are suitable for low-power applications and provide improved power efficiency compared to the NC7SP04FHX.

Q: What is the impact of the propagation delay difference in the SN74AUP1G06DRYR?

A: The SN74AUP1G06DRYR propagation delay is 10.5 ns at 3.3V with 30 pF load, exceeding the original 9.2 ns specification by 1.3 ns. This difference is acceptable for most general-purpose logic applications but should be evaluated for timing-critical circuits.

Q: Do both substitute parts support the full supply voltage range of the original part?

A: Both substitute parts support 0.8V to 3.6V supply voltage. The original part specified 0.9V minimum. Both substitutes operate at the lower 0.8V threshold, providing additional voltage margin for low-power applications.

Q: What is the temperature operating range difference?

A: The 74AUP1G04GS,132 operates from -40°C to 125°C, providing 40°C additional upper temperature margin compared to the NC7SP04FHX and SN74AUP1G06DRYR, which both operate to 85°C maximum.

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