CY74FCT162373ATPVC Equivalent & Substitute Parts

Part Overview

The CY74FCT162373ATPVC is a 16-bit transparent D-type latch with tri-state output, manufactured by Texas Instruments in the 74FCT logic series. This component features dual 8:8 channel configuration and operates across a 4.5V to 5.5V supply voltage range. The part is classified as obsolete, making identification of functional equivalents and active substitutes essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Manufacturer Part Number	CY74FCT162373ATPVC
Manufacturer	Texas Instruments
Logic Type	D-Type Transparent Latch
Circuit Configuration	2 Channel 8:8
Output Type	Tri-State
Voltage Supply Range	4.5V ~ 5.5V
Propagation Delay	2ns
Output Current (High/Low)	24mA / 24mA
Operating Temperature	-40°C ~ 85°C
Package Type	48-BSSOP (0.295", 7.50mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Compliance	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the CY74FCT162373ATPVC is determined by the following critical parameters:

Parametric Equivalents maintain identical electrical and mechanical specifications:

Logic type: D-Type Transparent Latch
Circuit configuration: 2 Channel 8:8
Output type: Tri-State
Voltage supply: 4.5V ~ 5.5V
Package: 48-BSSOP
Propagation delay: 2ns
Output current: 24mA / 24mA

Functional Substitutes provide equivalent latch functionality with compatible pinout and package but operate under different voltage specifications:

Logic type: D-Type Transparent Latch
Circuit configuration: 2 Channel 8:8
Output type: Tri-State
Package: 48-BSSOP
Operating temperature range: -40°C ~ 85°C
Voltage supply: 1.65V ~ 3.6V (lower voltage operation)

Parameter Comparison

Parameter	CY74FCT162373ATPVC (Main)	CY74FCT162373CTPVC (Parametric Equivalent)	SN74ALVCH162373LR (Functional Substitute)
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments
Series	74FCT	74FCT	74ALVCH
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 Range	4.5V ~ 5.5V	4.5V ~ 5.5V	1.65V ~ 3.6V
Propagation Delay	2ns	2ns	1ns
Output Current (High/Low)	24mA / 24mA	24mA / 24mA	12mA / 12mA
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	48-BSSOP (0.295", 7.50mm Width)	48-BSSOP (0.295", 7.50mm Width)	48-BSSOP (0.295", 7.50mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Obsolete	Active
RoHS Compliance	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

CY74FCT162373CTPVC is a parametric equivalent suitable for direct replacement in existing designs. This part maintains identical electrical specifications, package configuration, and operating characteristics. Both the main part and this equivalent are obsolete; however, both remain ROHS3 compliant with unlimited moisture sensitivity rating.

SN74ALVCH162373LR is an active substitute from Texas Instruments with full functional compatibility. This part operates at lower voltage levels (1.65V ~ 3.6V) compared to the original 4.5V ~ 5.5V specification. The SN74ALVCH162373LR offers improved propagation delay (1ns versus 2ns) and reduced output current (12mA versus 24mA). This substitute is suitable for new designs and ongoing production where lower voltage operation is acceptable. The active product status ensures long-term availability and supply chain continuity.

Selection between these substitutes depends on system voltage requirements and design constraints. For legacy systems requiring exact voltage specifications, the CY74FCT162373CTPVC provides parametric equivalence. For new implementations or systems capable of operating at lower voltages, the SN74ALVCH162373LR offers superior performance characteristics and active product support.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALVCH162373LR replace the CY74FCT162373ATPVC in a 5V system?

A: No. The SN74ALVCH162373LR operates at 1.65V ~ 3.6V and is not rated for 5V operation. Direct substitution in a 5V system would result in component damage. Use the CY74FCT162373CTPVC for 5V applications requiring parametric equivalence.

Q: What is the difference between the CY74FCT162373ATPVC and CY74FCT162373CTPVC?

A: Both parts are parametric equivalents with identical electrical specifications, voltage range, propagation delay, and output current. The primary difference is packaging format: the ATPVC uses tube packaging while the CTPVC also uses tube packaging. Both are obsolete products from the 74FCT series.

Q: Is the SN74ALVCH162373LR pin-compatible with the CY74FCT162373ATPVC?

A: Yes. Both parts use the 48-BSSOP package with identical pinout configuration. Pin compatibility is maintained; however, voltage supply requirements differ. Verify that your system can operate at the lower 1.65V ~ 3.6V voltage range before substitution.

Q: What are the key parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: logic type (D-Type Transparent Latch), circuit configuration (2 Channel 8:8), output type (Tri-State), package type (48-BSSOP), and operating temperature range (-40°C ~ 85°C). Voltage supply range and propagation delay are secondary considerations depending on application requirements.

Q: Why is the CY74FCT162373ATPVC marked as obsolete?

A: The CY74FCT162373ATPVC is classified as obsolete by the manufacturer. The active substitute SN74ALVCH162373LR from the 74ALVCH series provides equivalent functionality with improved performance characteristics and ensures ongoing availability for new designs and production support.

Q: Are all three parts RoHS compliant?

A: Yes. The CY74FCT162373ATPVC, CY74FCT162373CTPVC, and SN74ALVCH162373LR are all ROHS3 compliant with MSL rating of 1 (Unlimited moisture sensitivity).

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