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74FCT166244ATPVG Equivalent & Substitute Parts
Part Overview
The 74FCT166244ATPVG is a non-inverting buffer logic IC manufactured by Renesas Electronics Corporation, featuring 4 elements with 4 bits per element and 3-state output capability. Designed for 4.5V to 5.5V supply operation, this 48-SSOP surface mount component operates across the industrial temperature range of -40°C to 85°C. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 74FCT166244ATPVG |
| Manufacturer | Renesas Electronics Corporation |
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 4 |
| Number of Bits per Element | 4 |
| Output Type | 3-State |
| Current - Output High, Low | 8mA, 8mA |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 48-BSSOP (0.295", 7.50mm Width) |
| Product Status | Obsolete |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the 74FCT166244ATPVG is determined by the following critical parameters:
- Logic Type: Buffer, Non-Inverting (4 elements, 4 bits per element)
- Output Type: 3-State
- Voltage Supply Range: 4.5V ~ 5.5V
- Operating Temperature: -40°C ~ 85°C
- Mounting Type: Surface Mount
- Series: 74FCT
Substitute parts must maintain identical logic configuration, output characteristics, and electrical operating parameters. Package variations (48-SSOP vs. 48-TSSOP) are permitted when mechanical constraints allow, as both are standard surface mount packages for this logic family. Output current capability may exceed the original specification without compromising compatibility.
Parameter Comparison
| Part Number | Manufacturer | Logic Type | Elements / Bits | Output Type | Current (High/Low) | Supply Voltage | Temp Range | Package | Status |
|---|---|---|---|---|---|---|---|---|---|
| 74FCT166244ATPVG | Renesas | Buffer, Non-Inverting | 4 / 4 | 3-State | 8mA / 8mA | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-BSSOP | Obsolete |
| 74FCT162244ATPACT | Cypress | Buffer, Non-Inverting | 4 / 4 | 3-State | 24mA / 24mA | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-TFSOP | Active |
| 74FCT162244ATPVCT | Texas Instruments | Buffer, Non-Inverting | 4 / 4 | 3-State | 24mA / 24mA | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-BSSOP | Obsolete |
| 74FCT162244CTPACT | Cypress | Buffer, Non-Inverting | 4 / 4 | 3-State | 24mA / 24mA | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-TFSOP | Active |
| 74FCT162244CTPVCT | Cypress | Buffer, Non-Inverting | 4 / 4 | 3-State | 24mA / 24mA | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-BSSOP | Active |
| 74FCT162H244ATPACT | Texas Instruments | Buffer, Non-Inverting | 4 / 4 | 3-State | 24mA / 24mA | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-TFSOP | Obsolete |
| CY74FCT162244ATPVC | Texas Instruments | Buffer, Non-Inverting | 4 / 4 | 3-State | 24mA / 24mA | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-BSSOP | Obsolete |
| CY74FCT162244CTPVC | Texas Instruments | Buffer, Non-Inverting | 4 / 4 | 3-State | 24mA / 24mA | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-BSSOP | Obsolete |
| CY74FCT162244TPACT | Texas Instruments | Buffer, Non-Inverting | 4 / 4 | 3-State | 24mA / 24mA | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-TFSOP | Obsolete |
| CY74FCT162244TPVC | Cypress | Buffer, Non-Inverting | 4 / 4 | 3-State | 24mA / 24mA | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-BSSOP | Active |
| CY74FCT162244TPVCT | Cypress | Buffer, Non-Inverting | 4 / 4 | 3-State | 24mA / 24mA | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-BSSOP | Active |
Engineering Selection Recommendations
For applications currently using the 74FCT166244ATPVG, the following selection criteria apply:
Active Status Priority: Parts with Active product status are preferred for new designs and long-term availability. The 74FCT162244ATPACT, 74FCT162244CTPACT, CY74FCT162244TPVC, and CY74FCT162244TPVCT all maintain Active status from Cypress Semiconductor Corp, ensuring continued supply and support.
Package Compatibility: The original 48-BSSOP package is maintained in 74FCT162244ATPVCT, CY74FCT162244ATPVC, CY74FCT162244CTPVC, CY74FCT162244TPVC, and CY74FCT162244TPVCT. These parts provide direct mechanical compatibility without PCB redesign. The 48-TFSOP package variants (74FCT162244ATPACT, 74FCT162244CTPACT, 74FCT162H244ATPACT, CY74FCT162244TPACT) require footprint verification but offer equivalent electrical performance.
Output Current Capability: All substitute parts provide 24mA output current (high and low), exceeding the original 8mA specification. This enhanced capability is fully compatible with existing circuit designs and improves drive capability for loaded outputs.
Compliance and Certifications: Parts designated as ROHS3 Compliant (74FCT162244ATPVCT, CY74FCT162244ATPVC, CY74FCT162244CTPVC, CY74FCT162244TPACT) meet current environmental regulations. All listed substitutes maintain REACH Unaffected status and EAR99 export classification consistent with the original part.
Frequently Asked Questions (FAQ)
Q: Can I use a substitute part with higher output current than the original 74FCT166244ATPVG?
A: Yes. All listed substitutes provide 24mA output current capability compared to the original 8mA specification. This increased current capacity is fully compatible with existing designs and does not create functional conflicts. The higher current rating provides additional margin for loaded output conditions.
Q: What is the difference between 48-BSSOP and 48-TFSOP packages?
A: Both are standard 48-pin surface mount packages for 74FCT logic devices. The 48-BSSOP (0.295" width, 7.50mm) and 48-TFSOP (0.240" width, 6.10mm) differ in body width. PCB footprints must match the selected package. Electrical performance is identical between package variants.
Q: Are Cypress and Texas Instruments versions interchangeable?
A: Yes, when electrical parameters and package specifications match. All listed substitutes maintain identical logic configuration (4 elements, 4 bits per element), 3-state output, and 4.5V to 5.5V supply operation. Verify package compatibility with your PCB design before selection.
Q: Should I prioritize Active status parts over Obsolete status parts?
A: For new designs and applications requiring long-term component availability, Active status parts are recommended. Cypress Semiconductor Corp maintains Active status for 74FCT162244ATPACT, 74FCT162244CTPACT, CY74FCT162244TPVC, and CY74FCT162244TPVCT. Obsolete status parts may have limited future availability.
Q: Is the 74FCT162244 series a direct replacement for the 74FCT166244 series?
A: The 74FCT162244 variants listed maintain identical functional specifications: 4-element, 4-bit non-inverting buffers with 3-state output, operating across 4.5V to 5.5V supply and -40°C to 85°C temperature range. These parts are functionally equivalent and electrically compatible with the 74FCT166244ATPVG.
Q: What is the Moisture Sensitivity Level (MSL) for substitute parts?
A: Substitute parts with specified MSL ratings maintain MSL 1 (Unlimited), matching the original part's moisture sensitivity classification. This ensures equivalent handling and storage requirements.
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