CY74FCT16952CTPACT Equivalent & Substitute Parts

Part Overview

The CY74FCT16952CTPACT 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. This component operates at 4.5V to 5.5V supply voltage and is packaged in a 56-TSSOP surface mount configuration. The part is classified as obsolete, making identification of active equivalent and substitute parts essential for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	CY74FCT16952CTPACT
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	56-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

Substitution of the CY74FCT16952CTPACT is determined by the following critical parameters:

Functional Parameters:

Logic type: Transceiver, Non-Inverting
Number of elements: 2
Number of bits per element: 8
Output type: 3-State
Package / Case: 56-TFSOP (0.240", 6.10mm Width)
Mounting type: Surface Mount

Electrical Parameters:

Voltage supply range: 4.5V ~ 5.5V
Current output specifications: 32mA (high), 64mA (low)
Operating temperature: -40°C ~ 85°C (TA)

Substitute parts are grouped into two categories:

Category 1 - Manufacturer Recommended (Active Status): SN74LVCH16952ADGGR operates at a reduced voltage range (1.65V ~ 3.6V) with lower output current (24mA, 24mA). This part is functionally equivalent in logic configuration but operates in a different voltage domain and is suitable for low-voltage applications.

Category 2 - Parametric Equivalents (Active Status): SN74ABT16543DGGR, CY74FCT16543ATPACT, SN74ABT16470DGGR, SN74ABT16543DGGR, SN74ABT16646DGGR, and SN74ABT16952DGGR maintain identical electrical parameters (4.5V ~ 5.5V supply, 32mA/64mA output current) and functional configuration. These parts differ primarily in series designation and product status (active vs. obsolete).

Parameter Comparison

Parameter	CY74FCT16952CTPACT	SN74LVCH16952ADGGR	SN74ABT16543DGGR	CY74FCT16543ATPACT	SN74ABT16470DGGR	SN74ABT16646DGGR	SN74ABT16952DGGR
Series	74FCT	74LVCH	74ABT	74FCT	74ABT	74ABT	74ABT
Logic Type	Transceiver, Non-Inverting	Transceiver, Non-Inverting	Transceiver, Non-Inverting	Transceiver, Non-Inverting	Transceiver, Non-Inverting	Transceiver, Non-Inverting	Transceiver, Non-Inverting
Number of Elements	2	2	2	2	2	2	2
Number of Bits per Element	8	8	8	8	8	8	8
Output Type	3-State	3-State	3-State	3-State	3-State	3-State	3-State
Voltage - Supply	4.5V ~ 5.5V	1.65V ~ 3.6V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Current - Output High, Low	32mA, 64mA	24mA, 24mA	32mA, 64mA	32mA, 64mA	32mA, 64mA	32mA, 64mA	32mA, 64mA
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	56-TFSOP (0.240", 6.10mm Width)	56-TFSOP (0.240", 6.10mm Width)	56-TFSOP (0.240", 6.10mm Width)	56-TFSOP (0.240", 6.10mm Width)	56-TFSOP (0.240", 6.10mm Width)	56-TFSOP (0.240", 6.10mm Width)	56-TFSOP (0.240", 6.10mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (5V Logic Domain): Select from SN74ABT16543DGGR, SN74ABT16470DGGR, SN74ABT16646DGGR, or SN74ABT16952DGGR. These parts maintain identical electrical parameters (4.5V ~ 5.5V supply voltage, 32mA/64mA output current) and functional configuration. All are active products with ROHS3 compliance and MSL 1 rating. The 74ABT series provides superior availability and long-term support compared to the obsolete 74FCT series.

For Low-Voltage Applications: SN74LVCH16952ADGGR is suitable only when system voltage requirements are 1.65V to 3.6V. This part is not interchangeable with the original CY74FCT16952CTPACT in 5V systems due to voltage incompatibility. Output current specifications are reduced (24mA, 24mA) compared to the original part.

Compliance and Certification: All substitute parts maintain ROHS3 compliance, MSL 1 rating, and identical operating temperature range (-40°C ~ 85°C). All are manufactured by Texas Instruments with REACH unaffected status and EAR99 ECCN classification.

Frequently Asked Questions (FAQ)

Q: Can SN74LVCH16952ADGGR replace CY74FCT16952CTPACT in a 5V system? A: No. SN74LVCH16952ADGGR operates at 1.65V ~ 3.6V supply voltage, which is incompatible with 5V systems. Use only in low-voltage applications where system voltage is within the 1.65V ~ 3.6V range.

Q: What is the primary difference between the 74FCT and 74ABT series substitutes? A: Both series maintain identical electrical parameters (4.5V ~ 5.5V supply, 32mA/64mA output current) and functional configuration. The 74ABT series parts are active products with ongoing support, while 74FCT series parts are obsolete. For new designs and ongoing procurement, 74ABT series is recommended.

Q: Are all substitute parts pin-compatible with the original CY74FCT16952CTPACT? A: Yes. All substitute parts use the identical 56-TFSOP package (0.240", 6.10mm Width) with surface mount configuration, ensuring mechanical and electrical pin compatibility.

Q: What output current specifications should I verify for my application? A: The original CY74FCT16952CTPACT and most substitutes (74ABT and 74FCT series) provide 32mA output high and 64mA output low. SN74LVCH16952ADGGR provides reduced output current of 24mA for both high and low states. Verify your circuit load requirements against these specifications.

Q: Are there any moisture sensitivity or storage considerations? A: All parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Standard handling and storage procedures apply.

Q: Which substitute part offers the best long-term availability? A: SN74ABT16952DGGR, SN74ABT16543DGGR, SN74ABT16470DGGR, and SN74ABT16646DGGR are all active products in the 74ABT series. These parts are recommended for new designs requiring long-term component availability and support.

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