PI74FCT828ATQ Equivalent & Substitute Parts

Part Overview

The PI74FCT828ATQ is a non-inverting buffer logic IC manufactured by Diodes Incorporated, designed for 1 element with 10 bits per element and 3-state output capability. This component operates within the 4.75V to 5.25V supply voltage range and is housed in a 24-QSOP package. The product is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

Substiute Parts

PI74FCT828ATQ

Diodes IncorporatedIn Stock: 908PI74FCT828ATQ Datasheet

Current PartRFQ

74FCT244CTQG

IDT, Integrated Device Technology IncIn Stock: 865474FCT244CTQG Datasheet

DirectRFQ

CY74FCT827CTQCT

Texas InstrumentsIn Stock: 8664CY74FCT827CTQCT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PI74FCT828ATQ are identified based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

• Logic Type: Buffer, Non-Inverting
• Output Type: 3-State
• Voltage - Supply: 4.75V ~ 5.25V
• Operating Temperature: -40°C ~ 85°C (TA)
• Number of Elements: 1
• Number of Bits per Element: 10
• Package / Case: 24-SSOP (0.154", 3.90mm Width)

Two substitute parts meet these electrical and mechanical requirements:

CY74FCT827CTQCT (Texas Instruments) - Manufacturer recommended substitute with identical element and bit configuration, matching package specifications, and active product status with improved RoHS3 compliance.

74FCT244CTQG (IDT, Integrated Device Technology Inc) - Direct substitute with compatible voltage and temperature specifications, though featuring different element and bit configuration (2 elements, 4 bits per element) and a 20-QSOP package variant.

Parameter Comparison

Engineering Selection Recommendations

CY74FCT827CTQCT is the primary substitute for the PI74FCT828ATQ. This part maintains identical element and bit configuration (1 element, 10 bits per element), operates within the same voltage and temperature specifications, and is housed in the same 24-SSOP package. The CY74FCT827CTQCT carries active product status and ROHS3 compliance, addressing regulatory requirements that the obsolete PI74FCT828ATQ cannot meet. Output current specifications are higher (32mA, 64mA versus 15mA, 48mA), providing improved drive capability within the same supply voltage range.

74FCT244CTQG serves as an alternative substitute when element and bit configuration flexibility is acceptable. While this part maintains compatible voltage, temperature, and 3-state output specifications, it features a different internal architecture (2 elements, 4 bits per element) and a 20-QSOP package. This substitute is suitable only when circuit design permits accommodation of the alternative configuration and package footprint.

Frequently Asked Questions (FAQ)

Q: Can CY74FCT827CTQCT directly replace PI74FCT828ATQ in existing designs?

A: Yes. The CY74FCT827CTQCT maintains identical element count (1), bit configuration (10 bits per element), package type (24-SSOP), voltage range (4.75V ~ 5.25V), and operating temperature range (-40°C ~ 85°C). Pin-to-pin compatibility and functional equivalence are established through these matching parameters.

Q: What are the differences in output current between the main part and CY74FCT827CTQCT?

A: The CY74FCT827CTQCT provides higher output current specifications (32mA high, 64mA low) compared to the PI74FCT828ATQ (15mA high, 48mA low). This increased drive capability is compatible with designs specified for the original part and provides additional margin for signal integrity.

Q: Is 74FCT244CTQG suitable as a substitute?

A: The 74FCT244CTQG is electrically compatible in terms of voltage and temperature specifications but differs in internal architecture (2 elements, 4 bits per element versus 1 element, 10 bits per element) and package footprint (20-SSOP versus 24-SSOP). This substitute requires circuit design verification and PCB layout modification.

Q: What is the significance of RoHS compliance in selecting a substitute?

A: The PI74FCT828ATQ is RoHS non-compliant, while CY74FCT827CTQCT is ROHS3 compliant. For applications subject to RoHS regulations or procurement policies requiring compliance, CY74FCT827CTQCT is the appropriate selection. The 74FCT244CTQG RoHS status is not specified in available documentation.

Q: Are there package considerations when selecting a substitute?

A: Yes. The PI74FCT828ATQ and CY74FCT827CTQCT both use 24-SSOP packages with identical dimensions (0.154", 3.90mm width), ensuring PCB footprint compatibility. The 74FCT244CTQG uses a 20-SSOP package, requiring PCB layout modification if selected.