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74ACTQ16244SSC Equivalent & Substitute Parts
Part Overview
The 74ACTQ16244SSC is a non-inverting buffer IC manufactured by onsemi, featuring 4 elements with 4 bits per element and 3-state output capability. This logic component operates at 4.5V to 5.5V supply voltage with 24mA output current capacity and supports operating temperatures from -40°C to 85°C. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 74ACTQ16244SSC |
| Manufacturer | onsemi |
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 4 |
| Number of Bits per Element | 4 |
| Output Type | 3-State |
| Current - Output High, Low | 24mA, 24mA |
| 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) |
| Supplier Device Package | 48-SSOP |
| Product Status | Obsolete |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the 74ACTQ16244SSC is determined by strict adherence to the following electrical and mechanical parameters:
Critical Substitution Parameters:
- Logic Type: Buffer, Non-Inverting
- Number of Elements: 4
- Number of Bits per Element: 4
- Output Type: 3-State
- Current - Output High, Low: 24mA, 24mA
- 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)
- Supplier Device Package: 48-SSOP
All substitute parts listed maintain identical electrical specifications and mechanical compatibility. Substitutes are grouped by product status and manufacturer availability to facilitate procurement decisions for obsolete component replacement.
Parameter Comparison
| Part Number | Manufacturer | Logic Type | Elements | Bits/Element | Output Type | Current (mA) | Supply Voltage | Temp Range | Package | Product Status | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 74ACTQ16244SSC | onsemi | Buffer, Non-Inverting | 4 | 4 | 3-State | 24, 24 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-BSSOP | Obsolete | 2200 |
| 74ACT16244DGGR | Texas Instruments | Buffer, Non-Inverting | 4 | 4 | 3-State | 24, 24 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-TFSOP | Active | 3478 |
| 74ACT16244DLR | Texas Instruments | Buffer, Non-Inverting | 4 | 4 | 3-State | 24, 24 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-BSSOP | Active | 15782 |
| 74ACT16244DL | Texas Instruments | Buffer, Non-Inverting | 4 | 4 | 3-State | 24, 24 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-BSSOP | Last Time Buy | 1255 |
| 74FCT162244ATPVG | IDT, Integrated Device Technology Inc | Buffer, Non-Inverting | 4 | 4 | 3-State | 24, 24 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-BSSOP | Active | 4078 |
| 74FCT162244CTPVG | IDT, Integrated Device Technology Inc | Buffer, Non-Inverting | 4 | 4 | 3-State | 24, 24 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-BSSOP | Active | 1661 |
| 74FCT162H244CTPVC | Texas Instruments | Buffer, Non-Inverting | 4 | 4 | 3-State | 24, 24 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-BSSOP | Obsolete | 2060 |
| CY74FCT162244ATPVC | Texas Instruments | Buffer, Non-Inverting | 4 | 4 | 3-State | 24, 24 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-BSSOP | Obsolete | 1528 |
| CY74FCT162244CTPVC | Texas Instruments | Buffer, Non-Inverting | 4 | 4 | 3-State | 24, 24 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-BSSOP | Obsolete | 1596 |
| CY74FCT162244TPVC | Cypress Semiconductor Corp | Buffer, Non-Inverting | 4 | 4 | 3-State | 24, 24 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-BSSOP | Active | 1806 |
Engineering Selection Recommendations
For replacement of the obsolete 74ACTQ16244SSC, the following selection criteria apply based on product status and compliance:
Active Status Parts (Recommended for New Designs):
- 74ACT16244DLR (Texas Instruments): Highest inventory availability at 15,782 pieces. ROHS3 compliant. Identical 48-BSSOP package. Direct electrical equivalent.
- 74ACT16244DGGR (Texas Instruments): Active status with 3,478 pieces available. ROHS3 compliant. Package variant 48-TFSOP (0.240", 6.10mm Width) requires PCB layout verification.
- 74FCT162244ATPVG (IDT): Active status with 4,078 pieces available. Identical 48-BSSOP package and electrical specifications.
- 74FCT162244CTPVG (IDT): Active status with 1,661 pieces available. Identical 48-BSSOP package and electrical specifications.
- CY74FCT162244TPVC (Cypress Semiconductor Corp): Active status with 1,806 pieces available. Identical 48-BSSOP package and electrical specifications.
Last Time Buy Status:
- 74ACT16244DL (Texas Instruments): Last Time Buy status with 1,255 pieces available. ROHS3 compliant. Suitable for existing production runs with limited future availability.
Obsolete Status (Not Recommended for New Designs):
- 74FCT162H244CTPVC, CY74FCT162244ATPVC, CY74FCT162244CTPVC: Obsolete status. Inventory available but future procurement uncertain.
Frequently Asked Questions (FAQ)
Q: Can 74ACT16244DGGR replace 74ACTQ16244SSC directly on the PCB? A: Electrical substitution is valid. The 74ACT16244DGGR uses 48-TFSOP package (0.240", 6.10mm Width) versus the original 48-BSSOP (0.295", 7.50mm Width). PCB footprint verification is required before assembly.
Q: What is the difference between 74ACT16244DLR and 74ACT16244DL? A: Both are Texas Instruments 74ACT16244 parts with identical electrical specifications and 48-BSSOP packaging. 74ACT16244DLR is Active status with higher inventory (15,782 pcs). 74ACT16244DL is Last Time Buy status with lower inventory (1,255 pcs). For new designs, 74ACT16244DLR is preferred.
Q: Are IDT 74FCT162244 parts compatible with the original onsemi 74ACTQ16244SSC? A: Yes. 74FCT162244ATPVG and 74FCT162244CTPVG maintain identical electrical parameters (4 elements, 4 bits per element, 3-state output, 24mA current, 4.5V-5.5V supply, -40°C to 85°C operating range) and 48-BSSOP packaging. Both are Active status with confirmed inventory.
Q: Why is 74ACT16244DGGR in a different package than the original? A: 74ACT16244DGGR uses 48-TFSOP (0.240", 6.10mm Width) packaging, which is narrower than the original 48-BSSOP (0.295", 7.50mm Width). This is a package variant from the same manufacturer. Electrical function is identical, but PCB layout compatibility must be confirmed.
Q: Which substitute offers the best long-term availability? A: 74ACT16244DLR from Texas Instruments offers the highest inventory (15,782 pieces) and Active product status, providing the most reliable long-term procurement option for the 74ACTQ16244SSC replacement.
Q: Are all substitute parts RoHS compliant? A: Texas Instruments parts (74ACT16244 series) are ROHS3 compliant. IDT and Cypress parts do not list RoHS status in the provided specifications. Compliance verification with your supply chain is recommended for regulated applications.
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