CY74FCT16244CTPVC Equivalent & Substitute Parts

Part Overview

The CY74FCT16244CTPVC is a non-inverting buffer logic integrated circuit manufactured by Texas Instruments in the 74FCT series. This device functions as a 4-element, 4-bit per element buffer with 3-state output capability, housed in a 48-SSOP package. The part operates across a 4.5V to 5.5V supply voltage range with output drive capabilities of 32mA (high) and 64mA (low).

The CY74FCT16244CTPVC carries an obsolete product status. Locating equivalent and substitute parts is necessary to support ongoing production requirements, maintenance operations, and system redesigns where component availability is constrained.

Key Parameters

Parameter	Value
Logic Type	Buffer, Non-Inverting
Number of Elements	4
Number of Bits per Element	4
Output Type	3-State
Current - Output High	32mA
Current - Output Low	64mA
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	48-BSSOP (0.295", 7.50mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the CY74FCT16244CTPVC is determined by the following critical parameters:

Functional Parameters:

Logic type (Buffer, Non-Inverting)
Number of elements (4)
Number of bits per element (4)
Output type (3-State)

Electrical Parameters:

Supply voltage range (4.5V ~ 5.5V for direct substitutes; 2.7V ~ 3.6V for low-voltage variants)
Output current drive capability (32mA high / 64mA low for direct substitutes; reduced drive for low-voltage variants)
Operating temperature range (-40°C ~ 85°C)

Physical Parameters:

Package type (48-BSSOP or 48-TSSOP)
Mounting type (Surface Mount)

Substitute parts are grouped into two categories:

Category 1: Direct Electrical Substitutes (5.5V Operation) Parts maintaining identical supply voltage (4.5V ~ 5.5V) and output current specifications (32mA / 64mA). These include CY74FCT16244ATPVC, CY74FCT16244CTPAG8, and 74FCT162244CTPVG.

Category 2: Low-Voltage Variants (3.6V Operation) Parts operating at reduced supply voltage (2.7V ~ 3.6V) with reduced output current drive (8mA / 24mA or 24mA / 24mA). These include 74FCT163244APVG, 74FCT163244APVG8, 74FCT163244CPVG, and 74FCT163244CPVG8. These variants are suitable only for systems designed for low-voltage operation.

Category 3: Intermediate Voltage Variants (3.6V Operation, Standard Drive) The SN74LVCZ16244ADLR operates at 2.7V ~ 3.6V with 24mA / 24mA output drive, providing a bridge between standard and low-voltage applications.

Parameter Comparison

Part Number	Manufacturer	Series	Supply Voltage	Output Current (High/Low)	Package	Product Status	MSL
CY74FCT16244CTPVC	Texas Instruments	74FCT	4.5V ~ 5.5V	32mA / 64mA	48-BSSOP	Obsolete	1
CY74FCT16244ATPVC	Texas Instruments	74FCT	4.5V ~ 5.5V	32mA / 64mA	48-BSSOP	Obsolete	1
CY74FCT16244CTPAG8	Renesas Electronics	74FCT	4.5V ~ 5.5V	32mA / 64mA	48-TSSOP	Obsolete	1
74FCT162244CTPVG	IDT	74FCT	4.5V ~ 5.5V	24mA / 24mA	48-BSSOP	Active	Not specified
74FCT162244ATPVG8	Renesas Electronics	74FCT	4.5V ~ 5.5V	24mA / 24mA	48-BSSOP	Active	3
74FCT163244APVG	IDT	74FCT	2.7V ~ 3.6V	8mA / 24mA	48-BSSOP	Active	Not specified
74FCT163244APVG8	Renesas Electronics	74FCT	2.7V ~ 3.6V	8mA / 24mA	48-BSSOP	Active	3
74FCT163244CPVG	Renesas Electronics	74FCT	2.7V ~ 3.6V	8mA / 24mA	48-BSSOP	Active	3
74FCT163244CPVG8	Renesas Electronics	74FCT	2.7V ~ 3.6V	8mA / 24mA	48-BSSOP	Active	3
SN74LVCZ16244ADLR	Texas Instruments	74LVCZ	2.7V ~ 3.6V	24mA / 24mA	48-BSSOP	Active	1

Engineering Selection Recommendations

For Direct Replacement (5.5V Supply Systems):

The 74FCT162244CTPVG (IDT, Active status) and 74FCT162244ATPVG8 (Renesas Electronics, Active status) are the primary candidates for direct substitution. Both maintain the 4.5V to 5.5V supply voltage range and 48-BSSOP package footprint. The 74FCT162244ATPVG8 carries an active product status with ROHS3 compliance and MSL-3 rating, providing superior long-term availability and supply chain stability compared to the obsolete CY74FCT16244CTPVC.

Note that the 74FCT162244 series exhibits reduced output current drive (24mA / 24mA) compared to the original part (32mA / 64mA). This reduction is acceptable in applications where output loading does not require the full 64mA low-side drive capability.

For Low-Voltage System Redesigns (3.6V Supply Systems):

The 74FCT163244CPVG (Renesas Electronics, Tube packaging, 2000 units in stock) and 74FCT163244CPVG8 (Renesas Electronics, Tape & Reel, 1004 units in stock) provide active-status alternatives for systems operating at 2.7V to 3.6V. These parts maintain the 48-BSSOP package and 4-element, 4-bit architecture. Output current drive is reduced to 8mA (high) and 24mA (low), suitable for low-voltage logic applications.

For Intermediate Voltage Applications:

The SN74LVCZ16244ADLR (Texas Instruments, Active status, 1077 units in stock) operates at 2.7V to 3.6V with balanced 24mA / 24mA output drive. This part bridges standard and low-voltage requirements with MSL-1 moisture sensitivity rating and active product status.

Compliance and Availability:

All recommended substitutes maintain ROHS3 compliance and REACH unaffected status. The 74FCT162244ATPVG8, 74FCT163244CPVG, 74FCT163244CPVG8, and SN74LVCZ16244ADLR carry active product status, ensuring continued availability and manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can the 74FCT162244CTPVG directly replace the CY74FCT16244CTPVC?

A: The 74FCT162244CTPVG maintains identical supply voltage (4.5V ~ 5.5V), package (48-BSSOP), and functional architecture (4-element, 4-bit non-inverting buffer with 3-state output). The primary difference is reduced output current drive: 24mA / 24mA versus the original 32mA / 64mA. Direct substitution is valid for applications where output loading does not require the full 64mA low-side drive capability. Verify load impedance and current requirements before implementation.

Q: What is the difference between the 74FCT163244 and 74FCT162244 series?

A: The 74FCT163244 series operates at reduced supply voltage (2.7V ~ 3.6V) with reduced output current drive (8mA / 24mA). The 74FCT162244 series operates at standard supply voltage (4.5V ~ 5.5V) with reduced output current drive (24mA / 24mA). Selection depends on system supply voltage requirements and output loading specifications.

Q: Are the 48-BSSOP and 48-TSSOP packages interchangeable?

A: The 48-BSSOP (0.295", 7.50mm width) and 48-TSSOP (0.240", 6.10mm width) packages have different physical dimensions. The 48-TSSOP is narrower and requires PCB layout modifications. Verify PCB footprint compatibility before selecting parts with different package designations.

Q: What does MSL-1 versus MSL-3 mean for component handling?

A: MSL (Moisture Sensitivity Level) indicates the component's sensitivity to moisture absorption during storage and handling. MSL-1 (Unlimited) allows indefinite shelf life without special moisture control. MSL-3 (168 Hours) requires components to be used within 168 hours of package opening or stored in controlled humidity environments. The CY74FCT16244CTPVC carries MSL-1; many active substitutes carry MSL-3, requiring adjusted inventory management procedures.

Q: Why do some substitutes have reduced output current drive?

A: The 74FCT162244 and 74FCT163244 series represent later-generation designs optimized for reduced power consumption while maintaining functional compatibility. Output current reduction from 32mA / 64mA to 24mA / 24mA or 8mA / 24mA reflects design evolution. Substitution validity depends on actual load impedance and current requirements in the target application.

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

A: The 74FCT162244ATPVG8 (Renesas Electronics) and 74FCT163244CPVG (Renesas Electronics) carry active product status with the highest inventory levels (1140 and 2000 units respectively). The SN74LVCZ16244ADLR (Texas Instruments, 1077 units) also provides active-status availability. All three are suitable for new designs requiring extended component lifecycle support.

Q: Can I use a 2.7V ~ 3.6V part in a 5.5V system?

A: No. The 74FCT163244 series and SN74LVCZ16244ADLR are rated for maximum 3.6V supply voltage. Operating these parts at 5.5V exceeds maximum ratings and causes device failure. Use only parts rated for the system supply voltage range.

Q: What is the significance of the "8" suffix in part numbers like 74FCT162244ATPVG8?

A: The "8" suffix typically indicates Tape & Reel packaging format, which is standard for automated assembly operations. Parts without the "8" suffix may use Tube or Bulk packaging. Packaging selection depends on assembly process requirements and inventory management procedures.

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