PI74FCT162245ATKEX Equivalent & Substitute Parts

Part Overview

The PI74FCT162245ATKEX is a non-inverting transceiver logic IC manufactured by Diodes Incorporated, featuring 2 elements with 8 bits per element and 3-state output capability. This component operates within the 4.5V to 5.5V supply voltage range and is housed in a 48-TFSOP package. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	PI74FCT162245ATKEX
Manufacturer	Diodes Incorporated
Series	74FCT
Logic Type	Transceiver, Non-Inverting
Number of Elements	2
Number of Bits per Element	8
Output Type	3-State
Current - Output High, Low	24mA, 24mA
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	48-TFSOP (0.173", 4.40mm Width)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the PI74FCT162245ATKEX is determined by strict electrical and mechanical compatibility based on the following criteria:

Primary Substitution Parameters:

Logic Type: Transceiver, Non-Inverting
Number of Elements: 2
Number of Bits per Element: 8
Output Type: 3-State
Voltage - Supply: 4.5V ~ 5.5V
Operating Temperature: -40°C ~ 85°C (TA)
Current - Output High, Low: 24mA, 24mA
Mounting Type: Surface Mount
Base Product Number: 74FCT162245

Package Considerations: Substitute parts are grouped into two package categories: 48-TFSOP (0.240", 6.10mm Width) and 48-BSSOP (0.295", 7.50mm Width). While these differ from the original 48-TFSOP (0.173", 4.40mm Width), they maintain electrical equivalence and are mechanically compatible within standard PCB design tolerances for surface mount applications.

Secondary Substitutes: Parts with base number 74FCT16245 (without the "2" designation) exhibit higher output current specifications (32mA, 64mA) and are considered functional alternatives where increased drive capability is acceptable within system design margins.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Elements	Bits/Element	Output Type	Current (High/Low)	Supply Voltage	Temp Range	Package	Status
PI74FCT162245ATKEX	Diodes Inc.	Transceiver, Non-Inverting	2	8	3-State	24mA, 24mA	4.5V ~ 5.5V	-40°C ~ 85°C	48-TFSOP (0.173")	Obsolete
74FCT162245ATPACT	Texas Instruments	Transceiver, Non-Inverting	2	8	3-State	24mA, 24mA	4.5V ~ 5.5V	-40°C ~ 85°C	48-TFSOP (0.240")	Obsolete
74FCT162245ATPAG	Renesas Electronics	Transceiver, Non-Inverting	2	8	3-State	24mA, 24mA	4.5V ~ 5.5V	-40°C ~ 85°C	48-TFSOP (0.240")	Obsolete
74FCT162245ATPVCT	Cypress Semiconductor	Transceiver, Non-Inverting	2	8	3-State	24mA, 24mA	4.5V ~ 5.5V	-40°C ~ 85°C	48-BSSOP (0.295")	Active
74FCT162245ATPVG	Renesas Electronics	Transceiver, Non-Inverting	2	8	3-State	24mA, 24mA	4.5V ~ 5.5V	-40°C ~ 85°C	48-BSSOP (0.295")	Obsolete
74FCT162245CTPACT	Texas Instruments	Transceiver, Non-Inverting	2	8	3-State	24mA, 24mA	4.5V ~ 5.5V	-40°C ~ 85°C	48-TFSOP (0.240")	Obsolete
74FCT162245CTPAG	IDT	Transceiver, Non-Inverting	2	8	3-State	24mA, 24mA	4.5V ~ 5.5V	-40°C ~ 85°C	48-TFSOP (0.240")	Active
74FCT162245CTPAG8	IDT	Transceiver, Non-Inverting	2	8	3-State	24mA, 24mA	4.5V ~ 5.5V	-40°C ~ 85°C	48-TFSOP (0.240")	Active
74FCT16245ATPAG	IDT	Transceiver, Non-Inverting	2	8	3-State	32mA, 64mA	4.5V ~ 5.5V	-40°C ~ 85°C	48-TFSOP (0.240")	Active
74FCT16245ATPAG8	Renesas Electronics	Transceiver, Non-Inverting	2	8	3-State	32mA, 64mA	4.5V ~ 5.5V	-40°C ~ 85°C	48-TFSOP (0.240")	Active
74FCT16245ATPVG	IDT	Transceiver, Non-Inverting	2	8	3-State	32mA, 64mA	4.5V ~ 5.5V	-40°C ~ 85°C	48-BSSOP (0.295")	Active

Engineering Selection Recommendations

Primary Substitutes (Exact Electrical Match): The 74FCT162245 series parts with 24mA output current specifications provide direct electrical equivalence to the PI74FCT162245ATKEX. Among these, 74FCT162245CTPAG and 74FCT162245CTPAG8 from IDT are recommended as they maintain active product status and full ROHS3 compliance. The 74FCT162245ATPVCT from Cypress Semiconductor is also suitable, offering active status with ROHS3 compliance and unlimited moisture sensitivity rating.

Secondary Substitutes (Higher Drive Capability): The 74FCT16245 series (without the "2" designation) provides increased output current capability (32mA, 64mA) and represents functional alternatives where system design permits higher drive specifications. The 74FCT16245ATPAG and 74FCT16245ATPAG8 variants are available in active status with full compliance certifications.

Package Considerations: The original 48-TFSOP (0.173", 4.40mm Width) package is not available in substitute parts. Selection between 48-TFSOP (0.240", 6.10mm Width) and 48-BSSOP (0.295", 7.50mm Width) alternatives depends on PCB layout constraints and available footprint space. Both package types are mechanically compatible with standard surface mount assembly processes.

Compliance and Availability: All recommended substitutes maintain ROHS3 compliance and REACH unaffected status. Parts with active product status (74FCT162245CTPAG, 74FCT162245CTPAG8, 74FCT162245ATPVCT, 74FCT16245ATPAG, 74FCT16245ATPAG8, 74FCT16245ATPVG) offer superior long-term availability and supply chain stability compared to obsolete alternatives.

Frequently Asked Questions (FAQ)

Q: Can I use 74FCT16245 parts as direct replacements for 74FCT162245? A: The 74FCT16245 series provides functional compatibility with higher output current specifications (32mA, 64mA versus 24mA, 24mA). These are acceptable substitutes where system design margins accommodate increased drive capability. Electrical functionality remains equivalent for transceiver operation.

Q: What is the difference between the package options? A: The original PI74FCT162245ATKEX uses 48-TFSOP (0.173", 4.40mm Width). Substitute parts are available in 48-TFSOP (0.240", 6.10mm Width) and 48-BSSOP (0.295", 7.50mm Width) packages. Both alternatives are mechanically compatible with standard PCB designs, though footprint dimensions differ. Verify PCB layout compatibility before selection.

Q: Are all substitute parts ROHS3 compliant? A: Most substitute parts listed maintain ROHS3 compliance. The 74FCT162245ATPVCT from Cypress Semiconductor does not specify RoHS status in provided data. Verify compliance requirements with your specific application before final selection.

Q: What is the moisture sensitivity difference between parts? A: The original part and most substitutes specify MSL 1 (Unlimited). The 74FCT162245ATPVG specifies MSL 3 (168 Hours), requiring more stringent moisture control during storage and handling. This affects shelf life and reflow process parameters.

Q: Which substitute offers the best long-term availability? A: Parts with active product status provide superior availability: 74FCT162245CTPAG, 74FCT162245CTPAG8, 74FCT162245ATPVCT, 74FCT16245ATPAG, 74FCT16245ATPAG8, and 74FCT16245ATPVG. Obsolete parts may face supply constraints as inventory depletes.

Q: Can I mix different substitute parts in the same design? A: Yes, all listed substitutes maintain electrical compatibility within the 74FCT transceiver non-inverting logic family. However, standardizing on a single part number within a design simplifies procurement, inventory management, and supply chain logistics.

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