CD74HCT283MG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments CD74HCT283MG4 is a high-speed CMOS 4-bit binary full adder with internal lookahead carry, operating from a 50 pF load with 4 mA sink current in a 16-pin SOIC package. It performs fast parallel addition in a single device. Available from stock worldwide with competitive pricing.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- CD74HCT283MG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of CD74HCT283MG4?
- 4-bit binary full adder with full internal lookahead carry for high-speed parallel arithmetic
- HCT logic family providing TTL-compatible inputs for 5 V systems with CMOS power consumption
- 16-pin SOIC package (JESD-30 R-PDSO-G16) enabling compact PCB layouts
What is CD74HCT283MG4 used for?
The CD74HCT283MG4 is used in digital arithmetic circuits where fast 4-bit binary addition is required, such as ALU building blocks in FPGA prototyping boards and discrete logic counters. Its full internal lookahead carry allows cascading multiple devices to form 8-bit or 16-bit adders without propagation delay penalties. It also serves in address offset computation and BCD-to-binary converters in industrial control and test equipment designs.
What are the specifications of CD74HCT283MG4?
| YTEOL | 0 |
| Additional Feature | WITH FULL INTERNAL LOOKAHEAD |
| Family | HCT |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | ADDER/SUBTRACTOR |
| Max I(ol) | 0.004A |
| Number of Bits | 4 |
| Number of Functions | 1 |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.08mA |
| Prop. Delay@Nom-Sup | 60ns |
| Propagation Delay (tpd) | 74ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Mexico |
Where can I find the CD74HCT283MG4 datasheet?
CD74HCT283MG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74HCT283MG4?
Compatible alternatives and drop-in replacements for CD74HCT283MG4:
Frequently Asked Questions
How does the internal lookahead carry in CD74HCT283MG4 improve addition speed compared to ripple-carry adders?
The full internal lookahead carry computes all carry signals simultaneously rather than propagating them bit by bit, reducing worst-case propagation delay to a fixed value regardless of operand values. At a 50 pF load the CD74HCT283MG4 achieves typical addition in under 25 ns, making it significantly faster than a 4-bit ripple-carry implementation.
Can multiple CD74HCT283MG4 devices be cascaded to build a 16-bit adder, and what is the carry fan-out limit?
Yes, cascading 4 devices gives a 16-bit adder by connecting the carry-out of each stage to the carry-in of the next. The HCT output stage sinks up to 4 mA, which is sufficient to drive the standard HCT carry-in input at the required logic level, allowing cascading without external buffers at typical 5 V supply.
Which supply voltage range does CD74HCT283MG4 support, and how does it interface with TTL logic?
The HCT family operates from a 5 V supply and accepts TTL-level inputs with a VIH threshold of 2 V, making CD74HCT283MG4 a direct drop-in replacement for 74LS283 adders while consuming CMOS-level quiescent current typically below 80 µA. This eases mixed TTL-CMOS board designs common in legacy industrial equipment upgrades.
What package does CD74HCT283MG4 use, and what are its pin dimensions for PCB layout?
CD74HCT283MG4 uses a 16-pin SOIC package (JEDEC R-PDSO-G16) with 1.27 mm pin pitch and a body width of 3.9 mm, fitting standard 16-SOIC land patterns. The G4 suffix indicates the device is manufactured on a Green (Pb-free, halogen-free) process meeting RoHS requirements, simplifying compliance for designs requiring 50 pF or lower load per output pin.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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