CY74FCT16245ATPACT Equivalent & Substitute Parts

Part Overview

The CY74FCT16245ATPACT 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 is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. The device operates within a 4.5V to 5.5V supply voltage range and is suitable for applications requiring high-speed data buffering and signal routing in digital systems.

Key Parameters

Parameter	Value
Manufacturer Part Number	CY74FCT16245ATPACT
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 CY74FCT16245ATPACT 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 Range: -40°C ~ 85°C (TA)
Mounting Type: Surface Mount

Substitution Categories:

Direct Parametric Equivalents – Parts with identical electrical specifications (voltage supply 4.5V ~ 5.5V, output current 32mA/64mA) and same package footprint. These include 74ABT16245ADGGR, CY74FCT16245CTPACT, CY74FCT16245TPACT, SN74ABT16245ADGGR, and SN74ABTH16245DGGR. These parts are suitable for direct replacement in existing designs.
Manufacturer Recommended Alternatives – Parts from alternative manufacturers (Renesas Electronics Corporation, IDT) with compatible electrical parameters and packaging. These include 74FCT162245ATPAG, 74FCT162245ATPVG, 74FCT162245CTPAG, and 74FCT162245CTPAG8. Output current specifications vary (24mA vs. 32mA), requiring circuit validation.
Low-Voltage Alternative – The SN74LVCR16245ADGGR operates at reduced voltage (1.65V ~ 3.6V) with lower output current (12mA, 12mA) and active product status. This part is suitable only for applications with compatible voltage requirements and lower current demands.

Parameter Comparison

Part Number	Manufacturer	Series	Voltage - Supply	Current - Output High, Low	Product Status	Package / Case	Operating Temperature	Inventory (Pcs)
CY74FCT16245ATPACT	Texas Instruments	74FCT	4.5V ~ 5.5V	32mA, 64mA	Obsolete	48-TFSOP	-40°C ~ 85°C	1569
SN74LVCR16245ADGGR	Texas Instruments	74LVCR	1.65V ~ 3.6V	12mA, 12mA	Active	48-TFSOP	-40°C ~ 85°C	3241
74ABT16245ADGGR	Texas Instruments	74ABT	4.5V ~ 5.5V	32mA, 64mA	Active	48-TFSOP	-40°C ~ 85°C	2700
CY74FCT16245CTPACT	Texas Instruments	74FCT	4.5V ~ 5.5V	32mA, 64mA	Obsolete	48-TFSOP	-40°C ~ 85°C	2100
CY74FCT16245TPACT	Texas Instruments	74FCT	4.5V ~ 5.5V	32mA, 64mA	Obsolete	48-TFSOP	-40°C ~ 85°C	1064
SN74ABT16245ADGGR	Texas Instruments	74ABT	4.5V ~ 5.5V	32mA, 64mA	Active	48-TFSOP	-40°C ~ 85°C	3100
SN74ABTH16245DGGR	Texas Instruments	74ABTH	4.5V ~ 5.5V	32mA, 64mA	Active	48-TFSOP	-40°C ~ 85°C	2853
74FCT162245ATPAG	Renesas Electronics	74FCT	4.5V ~ 5.5V	24mA, 24mA	Obsolete	48-TFSOP	-40°C ~ 85°C	1114
74FCT162245ATPVG	Renesas Electronics	74FCT	4.5V ~ 5.5V	24mA, 24mA	Obsolete	48-BSSOP	-40°C ~ 85°C	1214
74FCT162245CTPAG	IDT	74FCT	4.5V ~ 5.5V	24mA, 24mA	Active	48-TFSOP	-40°C ~ 85°C	2527
74FCT162245CTPAG8	IDT	74FCT	4.5V ~ 5.5V	24mA, 24mA	Active	48-TFSOP	-40°C ~ 85°C	2175

Engineering Selection Recommendations

For New Designs with Standard 5V Supply: Select 74ABT16245ADGGR, SN74ABT16245ADGGR, or SN74ABTH16245DGGR. These parts maintain identical electrical specifications (4.5V ~ 5.5V supply, 32mA/64mA output current) and active product status, ensuring long-term availability and manufacturing support.

For Designs Requiring Lower Voltage Operation: The SN74LVCR16245ADGGR is suitable for applications operating at 1.65V ~ 3.6V. This part has active status but reduced output current capability (12mA, 12mA), requiring circuit validation to confirm compatibility with load requirements.

For Existing Designs Using CY74FCT16245ATPACT: Direct substitutes CY74FCT16245CTPACT and CY74FCT16245TPACT maintain identical specifications but retain obsolete status. For long-term production continuity, transition to active alternatives 74ABT16245ADGGR or SN74ABT16245ADGGR.

For Alternative Manufacturer Options: Parts 74FCT162245ATPAG, 74FCT162245CTPAG, and 74FCT162245CTPAG8 from Renesas Electronics and IDT provide functional equivalence with reduced output current (24mA, 24mA). These parts are suitable only when circuit design accommodates lower drive capability. The 74FCT162245ATPVG uses a different package (48-BSSOP) and is not recommended for direct PCB replacement.

Compliance Considerations: All listed parts maintain ROHS3 compliance and REACH unaffected status, suitable for regulated applications. Moisture sensitivity levels vary; verify MSL requirements for storage and handling procedures in your manufacturing environment.

Frequently Asked Questions (FAQ)

Q: Can I directly replace CY74FCT16245ATPACT with SN74LVCR16245ADGGR? A: Direct replacement is not recommended. While both parts share the same package footprint and logic function, the SN74LVCR16245ADGGR operates at 1.65V ~ 3.6V supply voltage versus the original 4.5V ~ 5.5V. Output current is also reduced to 12mA/12mA. Use this part only if your circuit design operates at the lower voltage range and current requirements are satisfied.

Q: What is the difference between 74ABT16245ADGGR and SN74ABT16245ADGGR? A: Both parts are from Texas Instruments 74ABT series with identical electrical specifications (4.5V ~ 5.5V, 32mA/64mA output current) and package. The primary difference is packaging format: 74ABT16245ADGGR is supplied in Cut Tape (CT) & Digi-Reel format, while SN74ABT16245ADGGR is in Tape & Reel (TR) format. Select based on your procurement and assembly requirements.

Q: Why do 74FCT162245 parts show lower output current (24mA, 24mA)? A: The 74FCT162245 series from Renesas Electronics and IDT has different output stage design compared to the original CY74FCT16245ATPACT (32mA, 64mA). While functionally equivalent for logic-level signaling, these parts have reduced drive capability. Verify your circuit can operate with lower output current before substitution.

Q: Is 74FCT162245ATPVG compatible with the original part? A: The 74FCT162245ATPVG has different packaging (48-BSSOP, 0.295" width versus 48-TFSOP, 0.240" width). While electrically equivalent, the different package footprint makes it unsuitable for direct PCB replacement without layout redesign.

Q: Which substitute part has the best long-term availability? A: SN74ABT16245ADGGR and SN74ABTH16245DGGR from Texas Instruments have active product status with highest inventory levels (3100 and 2853 units respectively). These parts are recommended for new designs requiring assured long-term supply.

Q: Are all substitute parts ROHS3 compliant? A: Yes, all listed substitute parts maintain ROHS3 compliance. Verify specific certifications with your supplier if additional compliance documentation is required for your application.

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