CY74FCT16245ATPVC Equivalent & Substitute Parts

Part Overview

The CY74FCT16245ATPVC 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-SSOP package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The device operates within a 4.5V to 5.5V supply voltage range and is suitable for applications requiring bidirectional data buffering and signal isolation in digital systems.

Key Parameters

Parameter	Value
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-BSSOP (0.295", 7.50mm Width)
Series	74FCT
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the CY74FCT16245ATPVC is determined by the following critical parameters: logic type (non-inverting transceiver), element and bit configuration (2 elements, 8 bits per element), output type (3-state), supply voltage range (4.5V ~ 5.5V), operating temperature range (-40°C ~ 85°C), and package compatibility (48-SSOP or 48-TSSOP).

Substitute parts are grouped into two categories:

Category 1: Direct Voltage and Performance Match (5.5V Supply) Parts maintaining the original 4.5V ~ 5.5V supply voltage range with equivalent or higher output current specifications (32mA/64mA or 24mA/24mA). These include 74FCT162245ATPAG, 74FCT162245ATPVG, 74FCT16245ATPAG, 74FCT16245ATPAG8, 74FCT16245CTPAG, 74FCT16245CTPAG8, and 74FCT16245CTPVG8. Package variants include 48-SSOP and 48-TSSOP configurations.

Category 2: Lower Voltage Alternative (1.65V ~ 3.6V Supply) The SN74LVCR16245ADLR operates at reduced supply voltage (1.65V ~ 3.6V) with lower output current (12mA, 12mA) but maintains the same logic type, element configuration, and 3-state output in a 48-SSOP package. This part is suitable only for applications designed for lower voltage operation.

Parameter Comparison

Part Number	Manufacturer	Series	Supply Voltage	Output Current (High, Low)	Package	Product Status	MSL
CY74FCT16245ATPVC	Texas Instruments	74FCT	4.5V ~ 5.5V	32mA, 64mA	48-BSSOP	Obsolete	1
SN74LVCR16245ADLR	Texas Instruments	74LVCR	1.65V ~ 3.6V	12mA, 12mA	48-BSSOP	Active	1
74FCT162245ATPAG	Renesas Electronics	74FCT	4.5V ~ 5.5V	24mA, 24mA	48-TFSOP	Obsolete	1
74FCT162245ATPVG	Renesas Electronics	74FCT	4.5V ~ 5.5V	24mA, 24mA	48-BSSOP	Obsolete	3
74FCT162245CTPAG	IDT	74FCT	4.5V ~ 5.5V	24mA, 24mA	48-TFSOP	Active	Not specified
74FCT162245CTPAG8	IDT	74FCT	4.5V ~ 5.5V	24mA, 24mA	48-TFSOP	Active	Not specified
74FCT16245ATPAG	IDT	74FCT	4.5V ~ 5.5V	32mA, 64mA	48-TFSOP	Active	Not specified
74FCT16245ATPAG8	Renesas Electronics	74FCT	4.5V ~ 5.5V	32mA, 64mA	48-TFSOP	Active	1
74FCT16245CTPAG	Renesas Electronics	74FCT	4.5V ~ 5.5V	32mA, 64mA	48-TFSOP	Active	1
74FCT16245CTPAG8	Renesas Electronics	74FCT	4.5V ~ 5.5V	32mA, 64mA	48-TFSOP	Active	1
74FCT16245CTPVG8	IDT	74FCT	4.5V ~ 5.5V	32mA, 64mA	48-BSSOP	Active	Not specified

Engineering Selection Recommendations

For applications requiring direct replacement of the CY74FCT16245ATPVC with active product status and full compliance certification, select from the following:

Primary Recommendations (Matching Output Current 32mA/64mA): 74FCT16245ATPAG8, 74FCT16245CTPAG, 74FCT16245CTPAG8, and 74FCT16245CTPVG8 maintain the original output current specifications and 4.5V ~ 5.5V supply voltage. All are ROHS3 compliant with MSL ratings of 1 or unspecified. The 48-TFSOP package (0.240", 6.10mm width) differs from the original 48-BSSOP, requiring PCB layout verification. The 74FCT16245CTPVG8 maintains the 48-BSSOP package format.

Secondary Recommendations (Reduced Output Current 24mA/24mA): 74FCT162245CTPAG and 74FCT162245CTPAG8 are active products with 4.5V ~ 5.5V supply voltage but reduced output current. These are suitable only if the application circuit tolerates lower drive capability.

Alternative for Lower Voltage Systems: SN74LVCR16245ADLR is an active product suitable exclusively for systems operating at 1.65V ~ 3.6V supply voltage. This part is not compatible with 5.5V applications.

All recommended substitutes maintain the non-inverting transceiver logic type, 2-element 8-bit configuration, and 3-state output functionality required for functional equivalence.

Frequently Asked Questions (FAQ)

Q: Can the CY74FCT16245ATPVC be replaced with SN74LVCR16245ADLR? A: No, unless the application circuit is redesigned for lower voltage operation. The SN74LVCR16245ADLR operates at 1.65V ~ 3.6V, while the original part requires 4.5V ~ 5.5V. Direct substitution in a 5.5V system will result in device malfunction or damage.

Q: What is the difference between 48-SSOP and 48-TSSOP packages? A: The 48-BSSOP (48-SSOP) package has a width of 0.295" (7.50mm), while the 48-TFSOP (48-TSSOP) package has a width of 0.240" (6.10mm). Both are surface-mount packages with 48 pins. PCB footprint and layout must be verified before substitution, as the packages are not mechanically interchangeable.

Q: Are all substitute parts ROHS3 compliant? A: Not all. Parts manufactured by Renesas Electronics (74FCT16245ATPAG8, 74FCT16245CTPAG, 74FCT16245CTPAG8) and Texas Instruments (SN74LVCR16245ADLR) are explicitly ROHS3 compliant. Parts from IDT do not specify RoHS status in the provided data.

Q: What is the significance of MSL (Moisture Sensitivity Level)? A: MSL indicates the maximum time a component can be exposed to moisture before soldering. MSL 1 (Unlimited) allows indefinite storage without moisture control. MSL 3 (168 Hours) requires baking before soldering if storage exceeds 168 hours in high-humidity conditions. The original part has MSL 1, providing greater handling flexibility.

Q: Which substitute offers the closest electrical match to the original CY74FCT16245ATPVC? A: 74FCT16245ATPAG8 and 74FCT16245CTPAG maintain the original 32mA/64mA output current specifications, 4.5V ~ 5.5V supply voltage, and -40°C ~ 85°C operating temperature. Both are active products with ROHS3 compliance and MSL 1 rating. The primary difference is package format (48-TFSOP vs. 48-BSSOP).

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