PI74ST1G08CEX Equivalent & Substitute Parts

Part Overview

The PI74ST1G08CEX is a single-channel AND gate logic IC manufactured by Diodes Incorporated in SC-70-5 package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates across a 1.8V to 3.6V supply voltage range with a maximum propagation delay of 3.8ns at 3.3V with 50pF load.

Key Parameters

Parameter	Value
Logic Type	AND Gate
Number of Circuits	1
Number of Inputs	2
Voltage - Supply	1.8V ~ 3.6V
Current - Quiescent (Max)	2 µA
Current - Output High, Low	24mA, 24mA
Max Propagation Delay @ V, Max CL	3.8ns @ 3.3V, 50pF
Operating Temperature	-40°C ~ 85°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 PI74ST1G08CEX is determined by the following critical parameters:

Logic function: Single-channel AND gate with 2 inputs
Supply voltage compatibility: Substitute must operate within or encompass the 1.8V ~ 3.6V range
Output drive capability: 24mA output current (high and low)
Propagation delay: Maximum 3.8ns at specified conditions
Package compatibility: SC-70-5 (5-TSSOP, SOT-353) or functionally equivalent packages
Operating temperature range: -40°C ~ 85°C
Compliance: ROHS3 compliant, MSL 1

The substitute parts listed below meet these criteria while offering active product status or improved electrical characteristics within the allowed parameter ranges.

Parameter Comparison

Parameter	PI74ST1G08CEX	NC7SV08P5X	NC7SVL08P5X	SN74AUC1G08DBVR	SN74AUC1G08DCKR
Manufacturer	Diodes Incorporated	onsemi	onsemi	Texas Instruments	Texas Instruments
Logic Type	AND Gate	AND Gate	AND Gate	AND Gate	AND Gate
Number of Circuits	1	1	1	1	1
Number of Inputs	2	2	2	2	2
Voltage - Supply	1.8V ~ 3.6V	0.9V ~ 3.6V	0.9V ~ 3.6V	0.8V ~ 2.7V	0.8V ~ 2.7V
Current - Quiescent (Max)	2 µA	900 nA	900 nA	10 µA	10 µA
Current - Output High, Low	24mA, 24mA	24mA, 24mA	24mA, 24mA	9mA, 9mA	9mA, 9mA
Max Propagation Delay @ V, Max CL	3.8ns @ 3.3V, 50pF	2.3ns @ 3V, 30pF	4.6ns @ 3V, 30pF	2ns @ 2.5V, 30pF	2ns @ 2.5V, 30pF
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°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	5-TSSOP, SC-70-5, SOT-353	SC-74A, SOT-753	5-TSSOP, SC-70-5, SOT-353
Product Status	Obsolete	Active	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitutes (Active Product Status):

NC7SV08P5X and SN74AUC1G08DCKR are recommended as primary substitutes. Both maintain active product status, ensuring long-term availability and supply chain stability. NC7SV08P5X offers improved quiescent current (900 nA vs. 2 µA) and faster propagation delay (2.3ns vs. 3.8ns) while maintaining identical output drive capability and SC-70-5 package compatibility. SN74AUC1G08DCKR provides the fastest propagation delay (2ns) and identical package footprint, though with reduced output drive current (9mA vs. 24mA).

Secondary Substitute (Obsolete Status):

NC7SVL08P5X shares obsolete status with the PI74ST1G08CEX but remains available in inventory. This part is suitable only when supply continuity from existing stock is prioritized over long-term availability.

Package Consideration:

SN74AUC1G08DBVR uses SOT-23-5 package instead of SC-70-5, requiring PCB layout modification. This part is suitable only when package change is acceptable in the design.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and operating temperature range compatibility with the original PI74ST1G08CEX.

Frequently Asked Questions (FAQ)

Q: Can NC7SV08P5X directly replace PI74ST1G08CEX without PCB modification?

A: Yes. NC7SV08P5X uses the identical SC-70-5 package and pin configuration, enabling direct PCB substitution without layout changes.

Q: What is the key difference between NC7SV08P5X and NC7SVL08P5X?

A: Both are onsemi AND gate ICs in SC-70-5 package. NC7SV08P5X has active product status with 2.3ns propagation delay, while NC7SVL08P5X is obsolete with 4.6ns propagation delay. NC7SV08P5X is preferred for new designs.

Q: Why does SN74AUC1G08DCKR have lower output current than PI74ST1G08CEX?

A: SN74AUC1G08DCKR is designed for ultra-low-power applications with 9mA output drive versus 24mA in PI74ST1G08CEX. Substitution is valid only if the application load does not require the higher drive current.

Q: Is SN74AUC1G08DBVR compatible with PI74ST1G08CEX?

A: SN74AUC1G08DBVR provides equivalent logic function and electrical performance but uses SOT-23-5 package instead of SC-70-5. PCB redesign is required for this substitution.

Q: What supply voltage range is safe for all substitute parts?

A: The common operating range across all substitutes is 1.8V ~ 2.7V. This range is guaranteed for PI74ST1G08CEX, NC7SV08P5X, NC7SVL08P5X, SN74AUC1G08DBVR, and SN74AUC1G08DCKR.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 rating, matching the original PI74ST1G08CEX specifications.

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