PI74STX1G08CX Equivalent & Substitute Parts

Part Overview

The PI74STX1G08CX is a single-channel AND gate logic IC manufactured by Diodes Incorporated in the 74STX series. This component integrates one 2-input AND gate function in a 5-pin SC-70-5 surface mount package. The part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. Substitute parts maintain the core AND gate logic function while offering improved availability, updated product status, and enhanced electrical characteristics across multiple manufacturer options.

Key Parameters

Parameter	PI74STX1G08CX
Logic Type	AND Gate
Number of Circuits	1
Number of Inputs	2
Voltage Supply Range	1.65V ~ 5.5V
Current - Quiescent (Max)	2 µA
Current - Output High/Low	32mA / 32mA
Max Propagation Delay @ 5V, 50pF	3.3ns
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	5-TSSOP, SC-70-5, SOT-353
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following mandatory parameters:

Logic function: AND gate with 1 channel and 2 inputs
Supply voltage range: Minimum 1.65V, maximum 5.5V
Output current capability: 32mA high and low
Package compatibility: SC-70-5, SOT-353, 5-TSSOP, or SC-74A
Mounting type: Surface mount

Substitute parts are grouped by manufacturer and product status. All listed substitutes maintain the core AND gate logic function and are compatible with the electrical specifications of the original part. Package variations (SC-70-5, SOT-353, 5-TSSOP, SC-74A, SOT-23-5) are acceptable substitutes provided the PCB layout accommodates the physical dimensions.

Parameter Comparison

Part Number	Manufacturer	Series	Voltage Supply	Quiescent Current (Max)	Output Current H/L	Propagation Delay @ 5V, 50pF	Operating Temp	Package	Product Status	RoHS Status
PI74STX1G08CX	Diodes Incorporated	74STX	1.65V ~ 5.5V	2 µA	32mA / 32mA	3.3ns	-40°C ~ 85°C	SC-70-5	Obsolete	Non-compliant
74LVC1G08SE-7	Diodes Incorporated	74LVC	1.65V ~ 5.5V	200 µA	32mA / 32mA	1.7ns	-40°C ~ 125°C	SOT-353	Active	ROHS3 Compliant
74LVCE1G08SE-7	Diodes Incorporated	74LVCE	1.4V ~ 5.5V	10 µA	32mA / 32mA	3.6ns	-40°C ~ 85°C	SOT-353	Active	ROHS3 Compliant
NC7SZ08P5X	onsemi	7SZ	1.65V ~ 5.5V	2 µA	32mA / 32mA	4.5ns	-40°C ~ 85°C	SC-70-5	Active	ROHS3 Compliant
74LVC1G08GV,125	Nexperia USA Inc.	74LVC	1.65V ~ 5.5V	4 µA	32mA / 32mA	4ns	-40°C ~ 125°C	SC-74A	Active	ROHS3 Compliant
74LVC1G08GW,125	Nexperia USA Inc.	74LVC	1.65V ~ 5.5V	4 µA	32mA / 32mA	4ns	-40°C ~ 125°C	5-TSSOP	Active	ROHS3 Compliant
NC7SZ08M5X	onsemi	7SZ	1.65V ~ 5.5V	2 µA	32mA / 32mA	4.5ns	-40°C ~ 85°C	SOT-23-5	Active	ROHS3 Compliant
NL17SZ08DFT2G	onsemi	17SZ	1.65V ~ 5.5V	1 µA	32mA / 32mA	4.5ns	-55°C ~ 125°C	SC-88A	Active	ROHS3 Compliant
NLV17SZ08DFT2G	onsemi	17SZ	1.65V ~ 5.5V	1 µA	32mA / 32mA	4.5ns	-55°C ~ 125°C	SC-88A	Obsolete	ROHS3 Compliant
SN74AHC1G08DCKR	Texas Instruments	74AHC	2V ~ 5.5V	1 µA	8mA / 8mA	7.9ns	-55°C ~ 125°C	SC-70-5	Active	ROHS3 Compliant
SN74LVC1G08DBVR	UMW	74LVC	1.65V ~ 5.5V	10 µA	32mA / 32mA	10ns	-40°C ~ 105°C	SOT-23-5	Active	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts are active or available products with ROHS3 compliance, addressing the RoHS non-compliance status of the obsolete PI74STX1G08CX. Selection should prioritize active product status parts to ensure long-term availability and supply chain stability.

For applications requiring extended temperature range operation, NL17SZ08DFT2G and SN74AHC1G08DCKR support -55°C to 125°C, compared to the original part's -40°C to 85°C range.

For applications with strict power consumption requirements, NL17SZ08DFT2G and NLV17SZ08DFT2G offer the lowest quiescent current at 1 µA. The 74LVCE1G08SE-7 provides a balance at 10 µA with extended supply voltage range down to 1.4V.

Package selection depends on PCB layout constraints. SC-70-5 packages (NC7SZ08P5X, SN74AHC1G08DCKR) provide direct footprint compatibility. SOT-353 and 5-TSSOP variants offer alternative pinouts within the same physical envelope. SC-74A and SOT-23-5 packages require PCB redesign but are widely available.

Output current capability differs in SN74AHC1G08DCKR (8mA) versus the standard 32mA across other substitutes. This part is suitable only for applications with reduced drive requirements.

Frequently Asked Questions (FAQ)

Q: Can I directly replace PI74STX1G08CX with any of these substitute parts?

A: Direct replacement depends on package compatibility. NC7SZ08P5X and SN74AHC1G08DCKR use the same SC-70-5 package and are pin-compatible. Other packages (SOT-353, 5-TSSOP, SC-74A, SOT-23-5) require PCB layout verification to confirm pinout alignment and physical fit.

Q: What is the primary reason to substitute this part?

A: The PI74STX1G08CX is obsolete and RoHS non-compliant. All listed substitutes are active products with ROHS3 compliance, ensuring regulatory compliance and supply chain continuity.

Q: Are there electrical differences I should consider?

A: All substitutes maintain the core AND gate logic function and 32mA output current (except SN74AHC1G08DCKR at 8mA). Propagation delay varies from 1.7ns to 10ns, which is acceptable for most logic applications. Quiescent current ranges from 1 µA to 200 µA; select based on power budget requirements.

Q: Which substitute offers the best performance?

A: 74LVC1G08SE-7 provides the fastest propagation delay at 1.7ns. NL17SZ08DFT2G and NLV17SZ08DFT2G offer the lowest quiescent current at 1 µA and the widest operating temperature range (-55°C to 125°C).

Q: Can I use SN74AHC1G08DCKR as a direct substitute?

A: SN74AHC1G08DCKR is functionally compatible but has reduced output current (8mA versus 32mA). Use only if your application does not require full 32mA drive capability. It offers superior temperature range (-55°C to 125°C) and is ROHS3 compliant.

Q: What package should I choose for a new design?

A: For new designs, select based on PCB layout and supply chain availability. 74LVC1G08GW,125 (5-TSSOP) and 74LVC1G08SE-7 (SOT-353) are widely available active products with ROHS3 compliance and good electrical performance.

Q: Is the 74LVCE1G08SE-7 suitable for low-voltage applications?

A: Yes. 74LVCE1G08SE-7 supports supply voltage down to 1.4V, the lowest among all substitutes, making it suitable for battery-powered and low-voltage logic applications.

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