PI74FCT16245TAEX Equivalent & Substitute Parts

Part Overview

The PI74FCT16245TAEX 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 48-TSSOP surface mount device operates across a 4.5V to 5.5V supply voltage range and is rated for -40°C to 85°C operating temperature. The part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications requiring compatible transceiver functionality.

Key Parameters

Parameter	Value
Manufacturer Part Number	PI74FCT16245TAEX
Manufacturer	Diodes Incorporated
Logic Type	Transceiver, Non-Inverting
Number of Elements	2
Number of Bits per Element	8
Output Type	3-State
Current - Output High, Low	32mA, 64mA
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	48-TFSOP (0.240", 6.10mm Width)
Base Product Number	74FCT16245
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the PI74FCT16245TAEX is determined by strict alignment of the following electrical and mechanical parameters:

Critical 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)
Mounting Type: Surface Mount
Base Product Number: 74FCT16245 or 74FCT162245 series

Package Compatibility Considerations: Substitutes are grouped into two package categories: 48-TFSOP (0.240", 6.10mm Width) and 48-BSSOP (0.295", 7.50mm Width). Both packages accommodate surface mount assembly with identical pin counts and electrical functionality. Package selection depends on PCB layout constraints and assembly equipment capabilities.

Output Current Variations: The original part specifies 32mA (high) and 64mA (low) output current. Substitute parts from the 74FCT162245 series provide 24mA (high) and 24mA (low) output current. This represents a reduction in drive capability and must be evaluated against circuit load requirements.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Elements / Bits	Output Type	Current (H/L)	Voltage Supply	Temp Range	Package	Status
PI74FCT16245TAEX	Diodes Inc.	Non-Inverting	2 / 8	3-State	32mA / 64mA	4.5V ~ 5.5V	-40°C ~ 85°C	48-TFSOP	Obsolete
74FCT162245ATPACT	Texas Instruments	Non-Inverting	2 / 8	3-State	24mA / 24mA	4.5V ~ 5.5V	-40°C ~ 85°C	48-TFSOP	Obsolete
74FCT162245ATPAG	Renesas Electronics	Non-Inverting	2 / 8	3-State	24mA / 24mA	4.5V ~ 5.5V	-40°C ~ 85°C	48-TFSOP	Obsolete
74FCT162245ATPVCT	Cypress Semiconductor	Non-Inverting	2 / 8	3-State	24mA / 24mA	4.5V ~ 5.5V	-40°C ~ 85°C	48-BSSOP	Active
74FCT162245ATPVG	Renesas Electronics	Non-Inverting	2 / 8	3-State	24mA / 24mA	4.5V ~ 5.5V	-40°C ~ 85°C	48-BSSOP	Obsolete
74FCT162245CTPACT	Texas Instruments	Non-Inverting	2 / 8	3-State	24mA / 24mA	4.5V ~ 5.5V	-40°C ~ 85°C	48-TFSOP	Obsolete
74FCT162245CTPAG	IDT	Non-Inverting	2 / 8	3-State	24mA / 24mA	4.5V ~ 5.5V	-40°C ~ 85°C	48-TFSOP	Active
74FCT162245CTPAG8	IDT	Non-Inverting	2 / 8	3-State	24mA / 24mA	4.5V ~ 5.5V	-40°C ~ 85°C	48-TFSOP	Active
74FCT16245ATPAG	IDT	Non-Inverting	2 / 8	3-State	32mA / 64mA	4.5V ~ 5.5V	-40°C ~ 85°C	48-TFSOP	Active
74FCT16245ATPVG	IDT	Non-Inverting	2 / 8	3-State	32mA / 64mA	4.5V ~ 5.5V	-40°C ~ 85°C	48-BSSOP	Active
74FCT16245CTPAG	Renesas Electronics	Non-Inverting	2 / 8	3-State	32mA / 64mA	4.5V ~ 5.5V	-40°C ~ 85°C	48-TFSOP	Active

Engineering Selection Recommendations

For Direct Electrical Equivalence (Matching Output Current): Select 74FCT16245ATPAG or 74FCT16245CTPAG when the circuit requires the original 32mA/64mA output current specification. Both parts are active products with ROHS3 compliance and unlimited moisture sensitivity rating. 74FCT16245ATPAG is available in 48-TFSOP package matching the original form factor, while 74FCT16245CTPAG is supplied in tube packaging.

For Reduced Output Current Applications: The 74FCT162245 series (74FCT162245ATPACT, 74FCT162245ATPAG, 74FCT162245CTPACT, 74FCT162245CTPAG, 74FCT162245CTPAG8) provides functional equivalence with reduced output current (24mA/24mA). These parts are suitable when circuit loads do not require the higher drive capability of the original specification. 74FCT162245CTPAG and 74FCT162245CTPAG8 from IDT are active products, ensuring long-term availability.

For Active Product Status: 74FCT162245ATPVCT (Cypress Semiconductor) is the only active product among the 74FCT162245 series substitutes, supplied in 48-BSSOP package. This part is recommended for new designs requiring extended product lifecycle support.

Package Selection: 48-TFSOP (0.240", 6.10mm Width) maintains the original footprint and is preferred for direct PCB replacement. 48-BSSOP (0.295", 7.50mm Width) requires PCB layout modification but offers alternative sourcing options.

Frequently Asked Questions (FAQ)

Q: Can I use 74FCT162245 series parts as direct replacements for PI74FCT16245TAEX?

A: Functional substitution is possible with electrical verification. The 74FCT162245 series maintains identical logic type, element count, bit width, output type, supply voltage, and operating temperature. However, output current is reduced from 32mA/64mA to 24mA/24mA. Circuit load analysis is required to confirm compatibility.

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

A: Both packages contain 48 pins and support surface mount assembly. 48-TFSOP has a 0.240" (6.10mm) width, while 48-BSSOP has a 0.295" (7.50mm) width. Package selection depends on PCB layout constraints and available assembly equipment. Pin assignments and electrical function are identical.

Q: Why are some substitute parts listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. Parts with active status (74FCT162245ATPVCT, 74FCT162245CTPAG, 74FCT162245CTPAG8, 74FCT16245ATPAG, 74FCT16245ATPVG, 74FCT16245CTPAG) are recommended for new designs and ongoing production to ensure long-term supply availability.

Q: Are all substitute parts ROHS3 compliant?

A: ROHS3 compliance is confirmed for most substitute parts. Verify specific compliance documentation for individual part numbers when regulatory certification is required for your application.

Q: What is the moisture sensitivity level (MSL) significance?

A: MSL 1 (Unlimited) indicates the part has no moisture sensitivity restrictions and can be stored indefinitely without special handling. MSL 3 (168 Hours) requires controlled storage conditions. The original part and most substitutes feature MSL 1 rating.

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