CY74FCT16245TPACT Equivalent & Substitute Parts

Part Overview

The CY74FCT16245TPACT is a non-inverting transceiver logic IC manufactured by Texas Instruments, featuring 2 elements with 8 bits per element and 3-state output capability in a 48-TSSOP package. This part operates at 4.5V to 5.5V supply voltage with an operating temperature range of -40°C to 85°C. The device is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring similar functionality.

Key Parameters

Parameter	Value
Manufacturer Part Number	CY74FCT16245TPACT
Manufacturer	Texas Instruments
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	32mA, 64mA
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	48-TFSOP (0.240", 6.10mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the CY74FCT16245TPACT are categorized based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

Logic Type: Transceiver, Non-Inverting
Number of Elements: 2
Number of Bits per Element: 8
Output Type: 3-State
Package / Case: 48-TFSOP (0.240", 6.10mm Width)
Operating Temperature: -40°C ~ 85°C (TA)
Mounting Type: Surface Mount

Voltage and Current Compatibility Groups:

Group 1 (Full Parameter Match - 5.5V Supply, 32mA/64mA Output):

CY74FCT16245ATPACT
CY74FCT16245CTPACT
74ABT16245ADGGR
SN74ABT16245ADGGR
SN74ABTH16245DGGR

Group 2 (Reduced Output Current - 5.5V Supply, 24mA/24mA Output):

74FCT162245ATPAG
74FCT162245ATPVG
74FCT162245CTPAG
74FCT162245CTPAG8

Group 3 (Lower Voltage Operation - 1.65V to 3.6V Supply):

SN74LVCR16245ADGGR (MFR Recommended for low-voltage applications)

Parameter Comparison

Part Number	Manufacturer	Series	Voltage Supply	Output Current (High/Low)	Product Status	Package	Inventory
CY74FCT16245TPACT	Texas Instruments	74FCT	4.5V ~ 5.5V	32mA, 64mA	Obsolete	48-TFSOP	1064 Pcs
CY74FCT16245ATPACT	Texas Instruments	74FCT	4.5V ~ 5.5V	32mA, 64mA	Obsolete	48-TFSOP	1569 Pcs
CY74FCT16245CTPACT	Texas Instruments	74FCT	4.5V ~ 5.5V	32mA, 64mA	Obsolete	48-TFSOP	2100 Pcs
74ABT16245ADGGR	Texas Instruments	74ABT	4.5V ~ 5.5V	32mA, 64mA	Active	48-TFSOP	2700 Pcs
SN74ABT16245ADGGR	Texas Instruments	74ABT	4.5V ~ 5.5V	32mA, 64mA	Active	48-TFSOP	3100 Pcs
SN74ABTH16245DGGR	Texas Instruments	74ABTH	4.5V ~ 5.5V	32mA, 64mA	Active	48-TFSOP	2853 Pcs
SN74LVCR16245ADGGR	Texas Instruments	74LVCR	1.65V ~ 3.6V	12mA, 12mA	Active	48-TFSOP	3241 Pcs
74FCT162245ATPAG	Renesas Electronics	74FCT	4.5V ~ 5.5V	24mA, 24mA	Obsolete	48-TFSOP	1114 Pcs
74FCT162245ATPVG	Renesas Electronics	74FCT	4.5V ~ 5.5V	24mA, 24mA	Obsolete	48-BSSOP	1214 Pcs
74FCT162245CTPAG	IDT	74FCT	4.5V ~ 5.5V	24mA, 24mA	Active	48-TFSOP	2527 Pcs
74FCT162245CTPAG8	IDT	74FCT	4.5V ~ 5.5V	24mA, 24mA	Active	48-TFSOP	2175 Pcs

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance): Select from the 74ABT series parts (74ABT16245ADGGR or SN74ABT16245ADGGR) or SN74ABTH16245DGGR. These devices maintain the same 4.5V to 5.5V supply voltage, 32mA/64mA output current specifications, and 48-TFSOP package as the original CY74FCT16245TPACT. All three options carry Active product status, ensuring long-term availability and support. Texas Instruments manufactures all three, providing consistent quality and documentation.

For Reduced Output Current Applications: The 74FCT162245 series (74FCT162245CTPAG or 74FCT162245CTPAG8 from IDT) provides functional equivalence with reduced output current capability (24mA/24mA). These parts are suitable for applications where lower drive current is acceptable. The 74FCT162245CTPAG maintains Active product status, supporting long-term design continuity.

For Low-Voltage System Integration: The SN74LVCR16245ADGGR operates at 1.65V to 3.6V supply voltage with reduced output current (12mA/12mA). This part is designated as MFR Recommended and carries Active product status. Selection of this device requires system-level voltage compatibility verification, as it operates outside the original 4.5V to 5.5V specification range.

Compliance and Certification: All substitute parts listed maintain ROHS3 compliance and REACH Unaffected status, matching the regulatory posture of the original CY74FCT16245TPACT. Moisture Sensitivity Level (MSL) ratings are consistent across all recommended substitutes at MSL 1 (Unlimited) or MSL 3 (168 Hours), supporting standard handling and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can I use 74ABT16245ADGGR as a direct replacement for CY74FCT16245TPACT?

A: Yes. Both devices share identical electrical specifications: 4.5V to 5.5V supply voltage, 32mA/64mA output current, 2 elements with 8 bits per element, 3-state output, and 48-TFSOP package. The 74ABT series is Active status, providing superior long-term availability compared to the obsolete 74FCT original.

Q: What is the difference between 74FCT162245CTPAG and CY74FCT16245TPACT?

A: The primary difference is output current capability. The 74FCT162245CTPAG provides 24mA/24mA output current versus the original 32mA/64mA. Both maintain 4.5V to 5.5V supply voltage and identical package specifications. Selection depends on whether your application requires the higher drive current of the original device.

Q: Is SN74LVCR16245ADGGR compatible with my existing 5V system?

A: No. The SN74LVCR16245ADGGR operates at 1.65V to 3.6V supply voltage, outside the 4.5V to 5.5V range of the original CY74FCT16245TPACT. This part is suitable only for low-voltage system designs. For 5V systems, select from the 74ABT or 74FCT162245 series alternatives.

Q: Why are there multiple part numbers for the same functional device?

A: Different manufacturers (Texas Instruments, Renesas Electronics, IDT) produce equivalent transceiver logic ICs with variations in output current capability, packaging options, and product status. These variations allow system designers to select parts based on specific electrical requirements, availability, and long-term support considerations.

Q: What does "Active" product status mean versus "Obsolete"?

A: Active status indicates the manufacturer continues production and provides full technical support. Obsolete status indicates the manufacturer has discontinued production. For new designs, Active status parts (74ABT16245ADGGR, SN74ABTH16245DGGR, 74FCT162245CTPAG) are preferred to ensure long-term supply chain stability.

Q: Are all substitute parts in the same package?

A: Most substitute parts use the 48-TFSOP package. The exception is 74FCT162245ATPVG, which uses 48-BSSOP (0.295", 7.50mm Width). Verify PCB footprint compatibility before selecting this alternative.

Q: Do all parts meet RoHS and REACH requirements?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH Unaffected status, matching the regulatory compliance of the original CY74FCT16245TPACT.

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