PI74FCT245ATS Equivalent & Substitute Parts

Part Overview

The PI74FCT245ATS is a non-inverting octal bus transceiver manufactured by Diodes Incorporated, designed for 3-state output applications in 20-SOIC surface mount packaging. This component operates within the 74FCT logic family and supports bidirectional data transmission with 8-bit per element configuration.

The PI74FCT245ATS carries an Obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this transceiver architecture.

Key Parameters

Parameter	Value
Manufacturer Part Number	PI74FCT245ATS
Manufacturer	Diodes Incorporated
Logic Type	Transceiver, Non-Inverting
Number of Elements	1
Number of Bits per Element	8
Output Type	3-State
Current - Output High, Low	15mA, 64mA
Voltage - Supply	4.75V ~ 5.25V
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	20-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the PI74FCT245ATS is determined by strict alignment of the following electrical and mechanical parameters:

Logic Type: Transceiver, Non-Inverting
Number of Elements: 1
Number of Bits per Element: 8
Output Type: 3-State
Voltage Supply Range: 4.75V ~ 5.25V
Package / Case: 20-SOIC (0.295", 7.50mm Width)
Mounting Type: Surface Mount

Substitute parts are grouped into two categories based on base product number:

Category 1: 74FCT245 Base Series – Direct functional equivalents with identical output current specifications (15mA high, 64mA low). These parts maintain the original PI74FCT245ATS electrical characteristics.

Category 2: 74FCT2245 Base Series – Enhanced variants with modified output current specifications (15mA high, 12mA low). These parts provide functional compatibility with reduced output current capability on the low side.

All substitute parts maintain the same 20-SOIC package footprint, surface mount configuration, and 4.75V–5.25V supply voltage range as the original component.

Parameter Comparison

Part Number	Manufacturer	Base Series	Output Current (High, Low)	Operating Temp	Product Status	RoHS Status	Package
PI74FCT245ATS	Diodes Incorporated	74FCT245	15mA, 64mA	-40°C ~ 85°C	Obsolete	Non-compliant	20-SOIC
CY74FCT245ATSOC	Texas Instruments	74FCT245	32mA, 64mA	-40°C ~ 85°C	Active	ROHS3 Compliant	20-SOIC
CY74FCT245ATSOCT	Texas Instruments	74FCT245	32mA, 64mA	-40°C ~ 85°C	Active	ROHS3 Compliant	20-SOIC
CY74FCT245CTSOC	Texas Instruments	74FCT245	32mA, 64mA	-40°C ~ 85°C	Active	ROHS3 Compliant	20-SOIC
CD74FCT245M96	Texas Instruments	74FCT245	15mA, 64mA	0°C ~ 70°C	Active	ROHS3 Compliant	20-SOIC
74FCT2245ATSOG8	IDT, Integrated Device Technology Inc	74FCT2245	15mA, 12mA	-40°C ~ 85°C	Active	ROHS3 Compliant	20-SOIC
CY74FCT2245ATSOC	Texas Instruments	74FCT2245	15mA, 12mA	-40°C ~ 85°C	Active	ROHS3 Compliant	20-SOIC
CY74FCT2245ATSOCT	Texas Instruments	74FCT2245	15mA, 12mA	-40°C ~ 85°C	Active	ROHS3 Compliant	20-SOIC
CY74FCT2245CTSOCT	Texas Instruments	74FCT2245	15mA, 12mA	-40°C ~ 85°C	Active	ROHS3 Compliant	20-SOIC
CY74FCT2245TSOC	Texas Instruments	74FCT2245	15mA, 12mA	-40°C ~ 85°C	Active	ROHS3 Compliant	20-SOIC
CY74FCT2245TSOCT	Cypress Semiconductor Corp	74FCT2245	15mA, 12mA	-40°C ~ 85°C	Active	Not specified	20-SOIC

Engineering Selection Recommendations

For Direct Electrical Equivalence (74FCT245 Series):

Select CY74FCT245ATSOC, CY74FCT245ATSOCT, or CY74FCT245CTSOC when output current specifications must match the original PI74FCT245ATS (15mA high, 64mA low). These Texas Instruments parts maintain identical electrical performance across the full -40°C to 85°C operating temperature range and carry ROHS3 compliance certification. All three are in Active product status with unlimited moisture sensitivity level (MSL 1).

For Enhanced Compliance (74FCT245 Series with Modified Output Current):

CD74FCT245M96 from Texas Instruments provides ROHS3 compliance and Active product status. Note that this part operates within a narrower temperature range (0°C to 70°C) compared to the original specification (-40°C to 85°C). This part maintains the original output current specification (15mA high, 64mA low) and is suitable for applications not requiring extended low-temperature operation.

For Alternative Architecture (74FCT2245 Series):

The 74FCT2245 base series (74FCT2245ATSOG8, CY74FCT2245ATSOC, CY74FCT2245ATSOCT, CY74FCT2245CTSOCT, CY74FCT2245TSOC, CY74FCT2245TSOCT) offers full Active product status and ROHS3 compliance. These parts feature reduced output current on the low side (12mA versus 64mA). Selection from this series is appropriate when lower output current capability is acceptable for the application and when RoHS compliance is required.

All substitute parts maintain the 20-SOIC package footprint and surface mount configuration, ensuring mechanical compatibility with existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Can I use a 74FCT2245 series part as a direct replacement for the PI74FCT245ATS?

A: The 74FCT2245 series parts are functionally compatible but feature different output current specifications. The PI74FCT245ATS provides 64mA output current on the low side, while 74FCT2245 variants provide 12mA. Selection depends on whether your circuit design requires the higher output current capability. Both series maintain identical logic type, element count, bit configuration, output type, supply voltage range, and package footprint.

Q: What is the difference between the various CY74FCT245 packaging options (ATSOC, ATSOCT, CTSOC)?

A: These designations indicate different packaging formats: ATSOC denotes Tube packaging, ATSOCT denotes Tape & Reel (TR) with Cut Tape (CT) and Digi-Reel options, and CTSOC denotes Tube packaging. All three variants maintain identical electrical specifications and 20-SOIC package dimensions. Selection is based on procurement and assembly requirements rather than electrical performance.

Q: Why does CD74FCT245M96 have a narrower operating temperature range?

A: CD74FCT245M96 operates from 0°C to 70°C, compared to the original -40°C to 85°C specification. This part is suitable for applications operating within standard commercial temperature ranges. If your design requires extended low-temperature operation below 0°C or high-temperature operation above 70°C, select alternative parts from the CY74FCT245 or CY74FCT2245 series that maintain the full -40°C to 85°C range.

Q: Are all substitute parts RoHS compliant?

A: Most substitute parts carry ROHS3 compliance certification. CY74FCT2245TSOCT from Cypress Semiconductor does not specify RoHS status in the provided data. If RoHS compliance is a design requirement, select from the Texas Instruments or IDT parts that explicitly state ROHS3 compliance.

Q: What is the inventory status for these substitute parts?

A: All substitute parts listed are available in new original stock quantities ranging from 1,338 to 17,037 pieces, providing adequate supply for production requirements. The 74FCT2245ATSOG8 from IDT offers the highest inventory level at 17,037 pieces.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message