CY74FCT16373ATPACT Equivalent & Substitute Parts

Part Overview

The CY74FCT16373ATPACT is a 16-bit D-Type Transparent Latch with dual 8:8 channel configuration and tri-state output capability. Manufactured by Texas Instruments in the 74FCT series, this component operates at 4.5V to 5.5V supply voltage with 2ns propagation delay and 32mA/64mA output drive capability. The product is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Manufacturer Part Number	CY74FCT16373ATPACT
Manufacturer	Texas Instruments
Logic Type	D-Type Transparent Latch
Circuit Configuration	2 Channel 8:8
Output Type	Tri-State
Voltage - Supply	4.5V ~ 5.5V
Delay Time - Propagation	2ns
Current - Output High / Low	32mA / 64mA
Operating Temperature	-40°C ~ 85°C
Package / Case	48-TFSOP (0.240", 6.10mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the CY74FCT16373ATPACT is determined by strict equivalence across the following critical parameters:

Functional Requirements:

Logic type: D-Type Transparent Latch
Circuit configuration: 2 Channel 8:8
Output type: Tri-State
Package: 48-TFSOP (0.240", 6.10mm Width)
Mounting type: Surface Mount

Electrical Performance Criteria:

Propagation delay: 2ns or faster
Output drive capability: minimum 32mA high / 64mA low
Operating temperature range: -40°C to 85°C minimum
Supply voltage compatibility

Compliance & Certification:

RoHS3 compliance
MSL rating: 1 (Unlimited)

Two substitute parts meet these criteria: SN74LVC16373ADGGR (manufacturer-recommended active alternative) and CY74FCT16373CTPACT (parametric equivalent from the same series).

Parameter Comparison

Parameter	CY74FCT16373ATPACT	SN74LVC16373ADGGR	CY74FCT16373CTPACT
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments
Series	74FCT	74LVC	74FCT
Logic Type	D-Type Transparent Latch	D-Type Transparent Latch	D-Type Transparent Latch
Circuit Configuration	2 Channel 8:8	2 Channel 8:8	2 Channel 8:8
Output Type	Tri-State	Tri-State	Tri-State
Voltage - Supply	4.5V ~ 5.5V	1.65V ~ 3.6V	4.5V ~ 5.5V
Delay Time - Propagation	2ns	2.1ns	2ns
Current - Output High / Low	32mA / 64mA	24mA / 24mA	32mA / 64mA
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	48-TFSOP (0.240", 6.10mm Width)	48-TFSOP (0.240", 6.10mm Width)	48-TFSOP (0.240", 6.10mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Obsolete
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

SN74LVC16373ADGGR is the manufacturer-recommended substitute. This part maintains identical functional and mechanical specifications while offering active product status from Texas Instruments. The 74LVC series operates at reduced supply voltage (1.65V to 3.6V) compared to the original 74FCT series (4.5V to 5.5V), enabling use in lower-voltage system architectures. Propagation delay increases marginally to 2.1ns, and output drive current reduces to 24mA symmetrical, both within acceptable tolerance for most applications requiring D-Type transparent latch functionality. ROHS3 compliance and MSL-1 rating ensure compatibility with modern manufacturing and storage requirements.

CY74FCT16373CTPACT provides parametric equivalence within the same 74FCT series. This part duplicates the electrical and thermal characteristics of the original CY74FCT16373ATPACT, including 4.5V to 5.5V supply voltage, 2ns propagation delay, and 32mA/64mA output drive. However, this part also carries obsolete product status. Selection of this substitute is appropriate only when supply voltage constraints or output drive requirements preclude use of the 74LVC alternative.

Frequently Asked Questions (FAQ)

Q: Can SN74LVC16373ADGGR replace CY74FCT16373ATPACT in existing designs?

A: Yes. Both parts share identical logic type, circuit configuration, output type, package, and mounting specifications. The 74LVC series operates at lower supply voltage (1.65V to 3.6V versus 4.5V to 5.5V). Verify that your system power supply and signal levels are compatible with the 1.65V to 3.6V range. Propagation delay increases from 2ns to 2.1ns and output drive reduces to 24mA symmetrical; confirm these parameters meet your timing and load requirements.

Q: What is the difference between the two substitute parts?

A: SN74LVC16373ADGGR is an active product from Texas Instruments with reduced supply voltage operation. CY74FCT16373CTPACT is an obsolete part with identical electrical specifications to the original CY74FCT16373ATPACT. For new designs and ongoing support, SN74LVC16373ADGGR is preferred due to active status.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the 48-TFSOP package with 0.240" width and 6.10mm dimensions. Pin assignments are identical for D-Type transparent latch functionality.

Q: Do supply voltage differences affect circuit design?

A: The SN74LVC16373ADGGR operates at 1.65V to 3.6V, while the original CY74FCT16373ATPACT operates at 4.5V to 5.5V. These voltage ranges do not overlap. System power supply and signal levels must be verified for compatibility. If your system requires 5V operation, use CY74FCT16373CTPACT. If your system operates at 3.3V or lower, SN74LVC16373ADGGR is suitable.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. CY74FCT16373ATPACT, SN74LVC16373ADGGR, and CY74FCT16373CTPACT are all ROHS3 compliant with MSL-1 (Unlimited) moisture sensitivity rating.

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