CY74FCT16952ATPVC Equivalent & Substitute Parts

Part Overview

The CY74FCT16952ATPVC is a non-inverting transceiver logic IC manufactured by Texas Instruments, configured as a 2-element, 8-bit per element device with 3-state output capability in a 56-SSOP package. This part operates at 4.5V to 5.5V supply voltage with output currents of 32mA (high) and 64mA (low), designed for surface mount applications across industrial temperature ranges (-40°C to 85°C).

The CY74FCT16952ATPVC is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support long-term product support for legacy 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
Current - Output High	32mA
Current - Output Low	64mA
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	56-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 CY74FCT16952ATPVC is determined by strict adherence to the following electrical and mechanical parameters:

Critical Substitution Parameters:

Logic type: Transceiver, Non-Inverting
Number of elements: 2
Number of bits per element: 8
Output type: 3-State
Package / Case: 56-BSSOP (0.295", 7.50mm Width)
Mounting type: Surface Mount
Operating temperature range: -40°C ~ 85°C (TA)

Voltage and Current Compatibility: Substitutes must support either the original 4.5V ~ 5.5V supply range or a compatible voltage range that encompasses this specification. Output current ratings (32mA high, 64mA low) define the drive capability class.

Substitute Categories:

Category 1: Parametric Equivalents (Identical Electrical Specifications) Parts maintaining 4.5V ~ 5.5V supply voltage, 32mA/64mA output currents, and identical functional architecture.

Category 2: MFR Recommended Substitute (Lower Voltage Operation) SN74LVCH16952ADLR operates at reduced voltage (1.65V ~ 3.6V) with lower output currents (24mA/24mA), suitable for applications where supply voltage reduction is acceptable and output drive requirements are met.

Parameter Comparison

Part Number	Series	Voltage - Supply	Current - Output High / Low	Product Status	Packaging	Inventory (Pcs)
CY74FCT16952ATPVC	74FCT	4.5V ~ 5.5V	32mA / 64mA	Obsolete	Tube	1364
SN74LVCH16952ADLR	74LVCH	1.65V ~ 3.6V	24mA / 24mA	Active	Tape & Reel (TR)	3100
CY74FCT16652ATPVC	74FCT	4.5V ~ 5.5V	32mA / 64mA	Obsolete	Tube	2144
CY74FCT16543CTPVC	74FCT	4.5V ~ 5.5V	32mA / 64mA	Obsolete	Tube	1310
CY74FCT16646ATPVC	74FCT	4.5V ~ 5.5V	32mA / 64mA	Obsolete	Not Specified	863
CY74FCT16646CTPVC	74FCT	4.5V ~ 5.5V	32mA / 64mA	Obsolete	Tube	827
CY74FCT16652CTPVC	74FCT	4.5V ~ 5.5V	32mA / 64mA	Obsolete	Tube	1250
SN74ABT16470DL	74ABT	4.5V ~ 5.5V	32mA / 64mA	Active	Tube	1027
SN74ABT16543DL	74ABT	4.5V ~ 5.5V	32mA / 64mA	Active	Tube	1900
SN74ABT16646DL	74ABT	4.5V ~ 5.5V	32mA / 64mA	Active	Tube	3080
SN74ABT16652DL	74ABT	4.5V ~ 5.5V	32mA / 64mA	Active	Tube	846

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Specifications): Select from the 74FCT series parametric equivalents (CY74FCT16652ATPVC, CY74FCT16543CTPVC, CY74FCT16646ATPVC, CY74FCT16646CTPVC, CY74FCT16652CTPVC) when maintaining the original 4.5V ~ 5.5V supply voltage and 32mA/64mA output current specifications. All maintain ROHS3 compliance and MSL 1 rating. These parts are classified as obsolete but remain functionally equivalent.

For Active Product Status with Identical Electrical Specifications: The 74ABT series (SN74ABT16470DL, SN74ABT16543DL, SN74ABT16646DL, SN74ABT16652DL) provides active product status while maintaining 4.5V ~ 5.5V supply voltage and 32mA/64mA output current ratings. These parts ensure long-term availability and supply chain continuity. All maintain ROHS3 compliance and MSL 1 rating.

For Reduced Voltage Operation: SN74LVCH16952ADLR is the manufacturer-recommended substitute when system design permits operation at 1.65V ~ 3.6V supply voltage. This part features active product status and reduced output current (24mA/24mA), suitable for low-power applications. Verify that reduced output drive capability meets system requirements before selection.

Compliance Considerations: All substitute parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 (unlimited) moisture sensitivity rating, ensuring compatibility with modern manufacturing and environmental standards.

Frequently Asked Questions (FAQ)

Q: Can SN74LVCH16952ADLR directly replace CY74FCT16952ATPVC in all applications?

A: SN74LVCH16952ADLR is electrically compatible for the transceiver function but operates at a different supply voltage range (1.65V ~ 3.6V versus 4.5V ~ 5.5V) and provides lower output current (24mA/24mA versus 32mA/64mA). Direct replacement is possible only if the system design accommodates reduced supply voltage and the lower output drive capability meets load requirements.

Q: What is the difference between 74FCT and 74ABT series substitutes?

A: Both series maintain identical electrical specifications (4.5V ~ 5.5V supply, 32mA/64mA output currents) and package compatibility. The primary distinction is product status: 74FCT series parts are obsolete, while 74ABT series parts are active. For new designs or long-term support, 74ABT series selection is recommended.

Q: Are all substitute parts available in the same packaging?

A: All substitute parts use the 56-BSSOP package with identical mechanical dimensions (0.295", 7.50mm width). Packaging format differs: most are supplied in Tube, while SN74LVCH16952ADLR is supplied in Tape & Reel (TR). Verify packaging requirements for your assembly process.

Q: Do substitute parts require PCB layout modifications?

A: No. All substitute parts maintain the 56-BSSOP package footprint and pinout compatibility, requiring no PCB layout changes. Surface mount assembly processes remain unchanged.

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

A: The 74ABT series (SN74ABT16470DL, SN74ABT16543DL, SN74ABT16646DL, SN74ABT16652DL) provides active product status, ensuring manufacturer support and supply chain availability. These parts are recommended for designs requiring extended product lifecycle support.

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