PI74FCT16373ATA Equivalent & Substitute Parts

Part Overview

The PI74FCT16373ATA is a 16-bit D-type transparent latch IC manufactured by Diodes Incorporated, housed in a 48-TSSOP package. This component functions as a 2-channel 8:8 transparent latch with tri-state output capability, operating within the 4.5V to 5.5V supply voltage range. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

PI74FCT16373ATA

Diodes IncorporatedIn Stock: 856PI74FCT16373ATA Datasheet

Current PartRFQ

CY74FCT16373ATPACT

Texas InstrumentsIn Stock: 5265CY74FCT16373ATPACT Datasheet

DirectRFQ

74FCT162373ATPACT

Cypress Semiconductor CorpIn Stock: 3093674FCT162373ATPACT Datasheet

MFR RecommendedRFQ

CY74FCT16373ATPVC

Texas InstrumentsIn Stock: 1440CY74FCT16373ATPVC Datasheet

MFR RecommendedRFQ

CY74FCT16373ATPVCT

Texas InstrumentsIn Stock: 1451CY74FCT16373ATPVCT Datasheet

MFR RecommendedRFQ

CY74FCT16373CTPACT

Texas InstrumentsIn Stock: 1089CY74FCT16373CTPACT Datasheet

MFR RecommendedRFQ

CY74FCT16373CTPVC

Texas InstrumentsIn Stock: 1443CY74FCT16373CTPVC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the PI74FCT16373ATA is determined by strict alignment of the following electrical and mechanical parameters:

Critical Substitution Parameters:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 2 Channel 8:8
• Output Type: Tri-State
• Voltage - Supply: 4.5V ~ 5.5V
• Operating Temperature: -40°C ~ 85°C
• Independent Circuits: 2
• Mounting Type: Surface Mount

Package Compatibility Parameters:

• 48-TFSOP (0.240", 6.10mm Width) for direct pin-compatible substitution
• 48-BSSOP (0.295", 7.50mm Width) for alternative package form factor

Substitute parts are grouped by package type and product status. Parts maintaining the 48-TFSOP package provide direct mechanical and electrical compatibility. Parts in 48-BSSOP package offer functional equivalence with different physical dimensions. Propagation delay variations (1.5ns to 2ns) and output current specifications remain within acceptable operating margins for this logic family.

Parameter Comparison

Engineering Selection Recommendations

For Direct Pin-Compatible Substitution (48-TFSOP Package):

CY74FCT16373ATPACT and CY74FCT16373CTPACT maintain identical package dimensions and pin configuration to the PI74FCT16373ATA. Both parts are ROHS3 compliant, addressing environmental regulatory requirements where the original part does not. CY74FCT16373ATPACT offers the closest electrical match with 32mA/64mA output current specifications.

For Active Product Status:

74FCT162373ATPACT is the only substitute listed with active product status, ensuring long-term availability and supply chain continuity. This part maintains the 48-TFSOP package and required electrical parameters, though output current is specified at 24mA/24mA rather than the original 32mA/64mA.

For Alternative Package Form Factor (48-BSSOP):

CY74FCT16373ATPVC and CY74FCT16373ATPVCT provide functional equivalence in the 48-BSSOP package. These parts are suitable for applications where PCB layout accommodates the wider 7.50mm package width. Both maintain ROHS3 compliance and identical electrical specifications to the 48-TFSOP variants.

Compliance Considerations:

All Texas Instruments and Cypress Semiconductor substitute parts are ROHS3 compliant, whereas the original Diodes Incorporated part is RoHS non-compliant. Selection should account for end-product regulatory requirements and environmental standards applicable to the target application.

Frequently Asked Questions (FAQ)

Q: Can CY74FCT16373ATPACT be used as a direct replacement for PI74FCT16373ATA?

A: Yes. Both parts share identical logic type (D-Type Transparent Latch), circuit configuration (2 Channel 8:8), output type (Tri-State), supply voltage range (4.5V ~ 5.5V), operating temperature range (-40°C ~ 85°C), and package dimensions (48-TFSOP, 0.240", 6.10mm Width). Output current specifications are identical at 32mA/64mA. Propagation delay increases from 1.5ns to 2ns, which remains within acceptable operating margins for this logic family.

Q: What is the difference between 48-TFSOP and 48-BSSOP packages?

A: The 48-TFSOP package has a width of 0.240" (6.10mm), while the 48-BSSOP package has a width of 0.295" (7.50mm). Both are surface-mount packages with 48 pins. Pin configuration and electrical function remain identical. Selection depends on PCB layout constraints and available board space.

Q: Is 74FCT162373ATPACT suitable for new designs?

A: Yes. 74FCT162373ATPACT is the only substitute with active product status, making it the preferred choice for new designs requiring long-term component availability. It maintains the 48-TFSOP package and all critical electrical parameters. Output current is specified at 24mA/24mA, which differs from the original 32mA/64mA specification but remains within acceptable operating ranges for tri-state latch applications.

Q: Are all substitute parts RoHS compliant?

A: All Texas Instruments and Cypress Semiconductor substitute parts listed are ROHS3 compliant. The original PI74FCT16373ATA is RoHS non-compliant. If RoHS compliance is required for your application, any of the listed substitutes satisfy this requirement.

Q: What is the significance of propagation delay differences?

A: The original PI74FCT16373ATA specifies 1.5ns propagation delay, while all substitutes specify 2ns. This 0.5ns difference is negligible for most digital logic applications operating at standard clock frequencies. System timing analysis should confirm compatibility with specific application requirements.

Q: Can parts in 48-BSSOP package be used interchangeably with 48-TFSOP variants?

A: Electrically, yes. Functionally, all parts maintain identical logic specifications. Mechanically, the wider 48-BSSOP package (7.50mm) requires different PCB footprint and layout considerations compared to the narrower 48-TFSOP package (6.10mm). PCB design must accommodate the selected package form factor.