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74ABT16244CSSCX Equivalent & Substitute Parts
Part Overview
The 74ABT16244CSSCX is a non-inverting buffer IC manufactured by onsemi, featuring 4 elements with 4 bits per element and 3-state output capability. Designed for 4.5V to 5.5V supply operation, this component is classified as obsolete. Due to its obsolete status and limited availability, identifying functionally equivalent substitute parts from active manufacturers is essential for design continuity and procurement reliability.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 74ABT16244CSSCX |
| Manufacturer | onsemi |
| Series | 74ABT |
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 4 |
| Number of Bits per Element | 4 |
| Output Type | 3-State |
| Current - Output High, Low | 32mA, 64mA |
| 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 of the 74ABT16244CSSCX is determined by the following critical parameters:
- Logic Function: Buffer, Non-Inverting with 4 elements, 4 bits per element, 3-state output
- Electrical Specifications: Supply voltage 4.5V ~ 5.5V, operating temperature -40°C ~ 85°C
- Output Drive Capability: Current ratings (Output High and Low)
- Package Type: 48-pin surface mount packages (BSSOP, TSSOP, TVSOP)
- Moisture Sensitivity: MSL 1 (Unlimited)
Substitute parts are grouped into two categories based on package compatibility:
Category 1 - Same Package (48-BSSOP): Direct mechanical and electrical replacements with identical footprint.
Category 2 - Alternative Packages (48-TSSOP, 48-TVSOP): Functionally equivalent with different package dimensions, requiring PCB layout modification.
Parameter Comparison
| Part Number | Manufacturer | Logic Type | Elements / Bits | Output Type | Current High/Low (mA) | Supply Voltage | Temp Range | Package | Product Status |
|---|---|---|---|---|---|---|---|---|---|
| 74ABT16244CSSCX | onsemi | Buffer, Non-Inverting | 4 / 4 | 3-State | 32 / 64 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-BSSOP | Obsolete |
| SN74ABT16244ADL | Texas Instruments | Buffer, Non-Inverting | 4 / 4 | 3-State | 32 / 64 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-BSSOP | Active |
| SN74ABT16244ADLR | Texas Instruments | Buffer, Non-Inverting | 4 / 4 | 3-State | 32 / 64 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-BSSOP | Active |
| 74ABT16244ADGG,118 | NXP Semiconductors | Buffer, Non-Inverting | 4 / 4 | 3-State | 32 / 64 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-TSSOP | Active |
| SN74ABT16244ADGGR | Texas Instruments | Buffer, Non-Inverting | 4 / 4 | 3-State | 32 / 64 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-TSSOP | Active |
| SN74ABT16244ADGVR | Texas Instruments | Buffer, Non-Inverting | 4 / 4 | 3-State | 32 / 64 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-TVSOP | Active |
| 74ABT162244DGG,118 | NXP USA Inc. | Buffer, Non-Inverting | 4 / 4 | 3-State | 32 / 12 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-TSSOP | Active |
| SN74ABT162244DGG | Texas Instruments | Buffer, Non-Inverting | 4 / 4 | 3-State | 12 / 12 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-TSSOP | Active |
| SN74ABT162244DGGR | Texas Instruments | Buffer, Non-Inverting | 4 / 4 | 3-State | 12 / 12 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-TSSOP | Active |
| SN74ABT162244DL | Texas Instruments | Buffer, Non-Inverting | 4 / 4 | 3-State | 12 / 12 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-SSOP | Active |
| SN74ABT162244DLR | Texas Instruments | Buffer, Non-Inverting | 4 / 4 | 3-State | 12 / 12 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-SSOP | Active |
| SN74ABT162244DGVR | Texas Instruments | Buffer, Non-Inverting | 4 / 4 | 3-State | 12 / 12 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-TVSOP | Active |
Engineering Selection Recommendations
Direct Replacement (Same Package - 48-BSSOP)
SN74ABT16244ADL and SN74ABT16244ADLR from Texas Instruments are direct functional and mechanical replacements for the 74ABT16244CSSCX. Both maintain identical output drive specifications (32mA high, 64mA low), package footprint, and electrical characteristics. Both parts are active products with RoHS3 compliance and REACH unaffected status, ensuring long-term availability and regulatory compliance.
Alternative Package Options
For designs permitting PCB layout modification, the following active alternatives provide equivalent functionality:
- 74ABT16244ADGG,118 (NXP Semiconductors, 48-TSSOP): Maintains 32mA/64mA output drive in a smaller 48-TSSOP package (6.10mm width).
- SN74ABT16244ADGGR (Texas Instruments, 48-TSSOP): Equivalent specifications with RoHS3 compliance.
- SN74ABT16244ADGVR (Texas Instruments, 48-TVSOP): Most compact option (4.40mm width) with identical electrical performance.
Lower Drive Current Alternatives
Parts designated as 74ABT162244 (note: different base number) provide reduced output drive capability (12mA high, 12mA low). These are suitable only for applications with lower current requirements and include SN74ABT162244DL, SN74ABT162244DLR, SN74ABT162244DGG, and SN74ABT162244DGGR. All are active products with RoHS3 compliance.
Frequently Asked Questions (FAQ)
Q: Can I use SN74ABT162244DL as a direct replacement for 74ABT16244CSSCX?
A: SN74ABT162244DL is functionally compatible but with reduced output drive current (12mA vs. 32mA high, 12mA vs. 64mA low). Use this part only if your circuit design does not require the higher drive capability of the original part.
Q: What is the difference between 48-BSSOP, 48-TSSOP, and 48-TVSOP packages?
A: These are all 48-pin surface mount packages with different physical dimensions. 48-BSSOP (7.50mm width) matches the original part. 48-TSSOP (6.10mm width) and 48-TVSOP (4.40mm width) are progressively smaller. Package selection requires PCB layout compatibility verification.
Q: Are all substitute parts RoHS compliant?
A: All listed substitute parts are RoHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.
Q: Which substitute part offers the best long-term availability?
A: SN74ABT16244ADL and SN74ABT16244ADLR from Texas Instruments are active products with substantial inventory levels, providing optimal long-term procurement reliability.
Q: Can I interchange parts with different output drive ratings?
A: Output drive current specifications must match your circuit requirements. Parts with 12mA ratings cannot replace 32mA/64mA rated parts in applications requiring higher drive capability. Verify your design's current requirements before substitution.
Q: What packaging options are available for the 32mA/64mA output drive variant?
A: The 32mA/64mA output drive specification is available in three package types: 48-BSSOP (SN74ABT16244ADL, SN74ABT16244ADLR), 48-TSSOP (74ABT16244ADGG,118, SN74ABT16244ADGGR), and 48-TVSOP (SN74ABT16244ADGVR).
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