CY74FCT162245CTPVC Equivalent & Substitute Parts

Part Overview

The CY74FCT162245CTPVC is a 16-bit non-inverting bus transceiver manufactured by Texas Instruments, designed for high-speed logic applications requiring bidirectional data transfer with 3-state output control. This device integrates 2 elements with 8 bits per element in a 48-SSOP surface mount package.

The CY74FCT162245CTPVC is classified as obsolete. 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
Logic Type	Transceiver, Non-Inverting
Number of Elements	2
Number of Bits per Element	8
Output Type	3-State
Voltage Supply Range	4.5V ~ 5.5V
Current Output High/Low	24mA / 24mA
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	48-BSSOP (0.295", 7.50mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the CY74FCT162245CTPVC is determined by the following critical parameters:

Functional Equivalence Parameters:

Logic type (Transceiver, Non-Inverting)
Number of elements (2)
Number of bits per element (8)
Output type (3-State)
Operating temperature range (-40°C ~ 85°C)

Electrical Compatibility Parameters:

Voltage supply range (4.5V ~ 5.5V for direct substitution)
Output current capability (24mA minimum for direct substitution)

Physical Compatibility Parameters:

Mounting type (Surface Mount)
Package case (48-BSSOP or 48-TFSOP acceptable)
Pin count (48 pins)

Substitute parts are grouped into two categories:

Category 1: Direct Parametric Equivalents – Parts matching all electrical specifications (4.5V ~ 5.5V supply, 24mA output current) with identical functional parameters.

Category 2: Functional Equivalents with Electrical Variations – Parts with identical logic function and package compatibility but different output current ratings (32mA/64mA) or voltage specifications (2.7V ~ 3.6V), requiring design review for application suitability.

Parameter Comparison

Part Number	Manufacturer	Series	Voltage Supply	Output Current (H/L)	Package	Product Status	Inventory
CY74FCT162245CTPVC	Texas Instruments	74FCT	4.5V ~ 5.5V	24mA / 24mA	48-BSSOP	Obsolete	2790 Pcs
74ACT16245DL	Texas Instruments	74ACT	4.5V ~ 5.5V	24mA / 24mA	48-BSSOP	Last Time Buy	3840 Pcs
CY74FCT162245TPVC	National Semiconductor	74FCT	4.5V ~ 5.5V	24mA / 24mA	48-BSSOP	Active	1389 Pcs
74FCT162245ATPAG	Renesas Electronics	74FCT	4.5V ~ 5.5V	24mA / 24mA	48-TFSOP	Obsolete	1114 Pcs
74FCT162245CTPAG	IDT	74FCT	4.5V ~ 5.5V	24mA / 24mA	48-TFSOP	Active	2527 Pcs
74FCT162245CTPAG8	IDT	74FCT	4.5V ~ 5.5V	24mA / 24mA	48-TFSOP	Active	2175 Pcs
74FCT16245ATPAG	IDT	74FCT	4.5V ~ 5.5V	32mA / 64mA	48-TFSOP	Active	6679 Pcs
74FCT16245ATPAG8	Renesas Electronics	74FCT	4.5V ~ 5.5V	32mA / 64mA	48-TFSOP	Active	6497 Pcs
74FCT16245ATPVG	IDT	74FCT	4.5V ~ 5.5V	32mA / 64mA	48-BSSOP	Active	1310 Pcs
74FCT16245CTPAG	Renesas Electronics	74FCT	4.5V ~ 5.5V	32mA / 64mA	48-TFSOP	Active	1319 Pcs
SN74LVCR162245DLR	Texas Instruments	74LVCR	2.7V ~ 3.6V	12mA / 12mA	48-BSSOP	Active	1900 Pcs

Engineering Selection Recommendations

Primary Substitutes (Direct Electrical Equivalents):

For applications requiring identical electrical performance (4.5V ~ 5.5V supply, 24mA output current), the following active parts are recommended:

CY74FCT162245TPVC (National Semiconductor, 74FCT series, Active status) – Maintains original 48-BSSOP package format with full parametric equivalence.
74FCT162245CTPAG (IDT, 74FCT series, Active status) – Available in 48-TFSOP package with identical electrical specifications.
74FCT162245CTPAG8 (IDT, 74FCT series, Active status) – Alternative active source with same electrical parameters in 48-TFSOP package.

Secondary Substitutes (Enhanced Output Current):

For applications where increased output current capability is beneficial:

74FCT16245ATPAG (IDT, 74FCT series, Active status) – Provides 32mA/64mA output current in 48-TFSOP package.
74FCT16245ATPAG8 (Renesas Electronics, 74FCT series, Active status) – Offers enhanced current capability in 48-TFSOP package with RoHS3 compliance.
74FCT16245ATPVG (IDT, 74FCT series, Active status) – Enhanced current variant maintaining 48-BSSOP package format.
74FCT16245CTPAG (Renesas Electronics, 74FCT series, Active status) – Alternative source for enhanced current in 48-TFSOP package.

Alternative Technology (Lower Voltage Operation):

SN74LVCR162245DLR (Texas Instruments, 74LVCR series, Active status) – Operates at 2.7V ~ 3.6V with reduced output current (12mA/12mA). Suitable only for low-voltage applications; not recommended for direct substitution in 5V systems.

Compliance Considerations:

All recommended substitutes maintain ROHS3 compliance and MSL 1 rating. Parts with Active status are preferred for new designs and ongoing production. Parts with Last Time Buy or Obsolete status should be evaluated for long-term supply chain planning.

Frequently Asked Questions (FAQ)

Q1: Can CY74FCT162245TPVC directly replace CY74FCT162245CTPVC?

A: Yes. Both parts share identical electrical specifications (4.5V ~ 5.5V supply, 24mA output current), functional architecture (2-element, 8-bit transceiver with 3-state output), and package format (48-BSSOP). CY74FCT162245TPVC is manufactured by National Semiconductor and maintains Active product status, making it suitable for direct substitution.

Q2: What is the difference between 48-BSSOP and 48-TFSOP packages?

A: Both are 48-pin surface mount packages with identical pin counts and electrical compatibility. The primary difference is physical dimensions: 48-BSSOP has a width of 0.295" (7.50mm), while 48-TFSOP has a width of 0.240" (6.10mm). PCB layout and footprint design must accommodate the specific package selected. Electrical performance is equivalent between the two package types.

Q3: Can 74FCT16245ATPAG be used as a substitute despite higher output current ratings?

A: Yes, with design verification. The 74FCT16245ATPAG provides 32mA/64mA output current compared to the original 24mA/24mA specification. This enhanced capability is backward compatible in applications designed for the lower current rating. However, applications with current-limiting circuits or specific output impedance requirements should be reviewed to confirm compatibility.

Q4: Why is SN74LVCR162245DLR listed as a substitute if it operates at different voltage?

A: SN74LVCR162245DLR is classified as a functional equivalent for applications requiring low-voltage operation (2.7V ~ 3.6V). It is not a direct substitute for 5V systems. This part is included for reference in design scenarios where voltage domain conversion or low-power operation is required.

Q5: Which substitute offers the best long-term availability?

A: Parts with Active product status offer the best long-term availability. Among direct electrical equivalents, 74FCT162245CTPAG and 74FCT162245CTPAG8 (both IDT, Active status) provide reliable supply continuity. For enhanced current capability, 74FCT16245ATPAG and 74FCT16245ATPAG8 (both Active status) offer multiple sourcing options.

Q6: Are all substitutes RoHS3 compliant?

A: All recommended substitutes maintain RoHS3 compliance. Moisture Sensitivity Level (MSL) is rated at 1 (Unlimited) across all parts, indicating no special moisture handling requirements during storage or assembly.

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