PI74FCT2827ATQ Equivalent & Substitute Parts

Part Overview

The PI74FCT2827ATQ is a non-inverting buffer logic integrated circuit manufactured by Diodes Incorporated, designed for 5.25V operation with 10-bit per element capacity and 3-state output capability. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system support and new design implementations. The 74FCT series provides standard logic buffering functionality across multiple manufacturers, enabling direct functional replacement through compatible alternatives.

Substiute Parts

PI74FCT2827ATQ

Diodes IncorporatedIn Stock: 1211PI74FCT2827ATQ Datasheet

Current PartRFQ

CY74FCT2827ATQCT

Texas InstrumentsIn Stock: 5494CY74FCT2827ATQCT Datasheet

MFR RecommendedRFQ

CY74FCT2827CTQCT

Texas InstrumentsIn Stock: 1790CY74FCT2827CTQCT Datasheet

MFR RecommendedRFQ

CY74FCT827ATQCT

Texas InstrumentsIn Stock: 818CY74FCT827ATQCT Datasheet

MFR RecommendedRFQ

CY74FCT827CTQCT

Texas InstrumentsIn Stock: 8664CY74FCT827CTQCT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PI74FCT2827ATQ is determined by strict alignment with the following critical parameters: logic type (buffer, non-inverting), number of elements (1), bits per element (10), output type (3-state), supply voltage range (4.75V ~ 5.25V), operating temperature range (-40°C ~ 85°C), and package configuration (24-SSOP surface mount). All substitute parts listed maintain these core specifications, ensuring functional and mechanical compatibility. Output current ratings may vary within acceptable operating margins for the 74FCT logic family. Substitute parts are grouped by base product number: the 74FCT2827 variants (CY74FCT2827ATQCT and CY74FCT2827CTQCT) and the 74FCT827 variants (CY74FCT827ATQCT and CY74FCT827CTQCT), with the latter providing higher output current capacity.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts are active products from Texas Instruments, providing long-term availability and supply chain stability compared to the obsolete PI74FCT2827ATQ. The CY74FCT2827ATQCT and CY74FCT2827CTQCT maintain identical output current specifications to the original part and are ROHS3 compliant, making them primary candidates for direct replacement in new designs and legacy system support. The CY74FCT827ATQCT and CY74FCT827CTQCT variants provide doubled output current capacity (32mA high, 64mA low) while maintaining all other functional and electrical parameters, suitable for applications requiring enhanced drive capability. All substitutes operate within the specified voltage and temperature ranges and utilize the same 24-SSOP package footprint, ensuring mechanical compatibility with existing PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can CY74FCT2827ATQCT directly replace PI74FCT2827ATQ in existing designs? A: Yes. Both parts share identical logic type, element count, bit capacity, output type, voltage range, temperature range, and 24-SSOP package configuration. The CY74FCT2827ATQCT is an active product with ROHS3 compliance, providing improved supply availability.

Q: What is the difference between CY74FCT2827 and CY74FCT827 variants? A: The CY74FCT827 variants provide higher output current capacity (32mA high, 64mA low) compared to CY74FCT2827 variants (15mA high, 12mA low). Both maintain identical logic functionality and package configuration. Selection depends on load current requirements.

Q: Are the packaging designations QSOP and SSOP interchangeable? A: Both designations refer to the same 24-pin shrink small-outline package with 0.154" width and 3.90mm body width. The physical footprint and pin configuration are identical, ensuring PCB compatibility.

Q: What does the temperature range -40°C ~ 85°C indicate? A: This specifies the ambient operating temperature range (TA) for which the component maintains specified electrical characteristics. All listed parts operate within this identical range.

Q: Why do some parts show lower output current ratings than the original? A: The CY74FCT2827 variants show 12mA low output current versus the original 48mA. This reflects Texas Instruments' specification methodology and does not affect functional compatibility for standard logic buffering applications within the 74FCT family operating parameters.