CY74FCT162827ATPVC Equivalent & Substitute Parts

Part Overview

The CY74FCT162827ATPVC is a non-inverting buffer logic IC manufactured by Texas Instruments, configured as a 2-element, 10-bit per element device with 3-state output capability. This component operates within a 4.5V to 5.5V supply voltage range and is housed in a 56-SSOP surface mount package. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	CY74FCT162827ATPVC
Manufacturer	Texas Instruments
Logic Type	Buffer, Non-Inverting
Number of Elements	2
Number of Bits per Element	10
Output Type	3-State
Current - Output High, Low	24mA, 24mA
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	56-BSSOP (0.295", 7.50mm Width)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the CY74FCT162827ATPVC is determined by the following critical parameters:

Primary Substitution Criteria:

Logic type: Buffer, Non-Inverting
Number of elements: 2
Number of bits per element: 10
Output type: 3-State
Output current capability: 24mA (high and low)
Package / Case: 56-BSSOP (0.295", 7.50mm Width)
Operating temperature range: -40°C ~ 85°C (TA)

Voltage Supply Compatibility: Substitutes must operate within the original supply voltage range of 4.5V to 5.5V, or provide a compatible subset that includes this range.

Packaging and Mechanical Compatibility: All substitute parts must use identical surface mount packaging (56-BSSOP) to ensure PCB layout compatibility without redesign.

Parameter Comparison

Parameter	CY74FCT162827ATPVC	SN74ALVCH16827DLR	74ACT16825DL	74ACT16827DL
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Logic Type	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting
Number of Elements	2	2	2	2
Number of Bits per Element	10	10	9	10
Output Type	3-State	3-State	3-State	3-State
Current - Output High, Low	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA
Voltage - Supply	4.5V ~ 5.5V	1.65V ~ 3.6V	4.5V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	56-BSSOP	56-BSSOP	56-BSSOP	56-BSSOP
Product Status	Obsolete	Obsolete	Last Time Buy	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

74ACT16827DL (Recommended Primary Substitute)

The 74ACT16827DL provides full parametric equivalence to the CY74FCT162827ATPVC. Both devices feature identical bit-per-element configuration (10 bits), matching output current specifications (24mA), and compatible supply voltage range (4.5V ~ 5.5V). The 74ACT16827DL maintains Active product status, ensuring long-term availability and supply chain stability. All compliance certifications (ROHS3, MSL 1) align with the original component.

74ACT16825DL (Parametric Equivalent with Limitation)

The 74ACT16825DL operates within the same supply voltage range and maintains identical output current capability. However, this device is configured with 9 bits per element rather than 10 bits per element. This configuration difference restricts its use to applications where the reduced bit width is functionally acceptable. The part carries Last Time Buy status, indicating limited future availability.

SN74ALVCH16827DLR (Voltage-Incompatible Substitute)

The SN74ALVCH16827DLR matches the CY74FCT162827ATPVC in all functional parameters except supply voltage range. This device operates at 1.65V to 3.6V, which does not overlap with the original 4.5V to 5.5V requirement. This part is suitable only for applications where the system voltage has been redesigned to operate at lower levels. The Obsolete product status further limits its practical application.

Frequently Asked Questions (FAQ)

Q: Can the 74ACT16827DL be used as a direct replacement for the CY74FCT162827ATPVC?

A: Yes. The 74ACT16827DL is a direct functional equivalent. Both devices share identical logic configuration (2 elements, 10 bits per element), output characteristics (3-state, 24mA), supply voltage range (4.5V ~ 5.5V), and package format (56-BSSOP). No circuit modifications are required.

Q: Why is the SN74ALVCH16827DLR not recommended as a substitute?

A: The SN74ALVCH16827DLR operates at a different supply voltage range (1.65V ~ 3.6V) that does not include the original 4.5V ~ 5.5V specification. Direct substitution would require system-level voltage redesign. Additionally, its Obsolete status limits availability.

Q: Can the 74ACT16825DL replace the CY74FCT162827ATPVC?

A: The 74ACT16825DL is a parametric equivalent with one critical difference: it provides 9 bits per element instead of 10 bits per element. Substitution is possible only if the application can function with reduced bit width. The Last Time Buy status indicates declining availability.

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

A: Yes. All listed substitute parts use the 56-BSSOP surface mount package with identical mechanical dimensions (0.295", 7.50mm width). PCB layout compatibility is maintained without modification.

Q: Do the substitute parts meet the same compliance requirements?

A: Yes. All substitute parts are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the original CY74FCT162827ATPVC specifications.

Q: What is the difference between the 74ACT and 74ALVCH series?

A: The 74ACT series operates at standard TTL voltage levels (4.5V ~ 5.5V), while the 74ALVCH series is designed for low-voltage applications (1.65V ~ 3.6V). Series selection depends on system voltage requirements.

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