CD74HC283E Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
CD74HC283E is a 4-bit binary full adder from Texas Instruments featuring full internal lookahead carry for high-speed arithmetic, operating on 2 V to 6 V supply in the HC CMOS logic family. It handles 4-bit binary addition with carry-in and carry-out in a 16-pin DIP package, supporting 50 pF load capacitance and 5.2 mA output sink current. Available from authorized distributors worldwide with immediate stock for digital logic and ALU designs.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- CD74HC283E Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5407(MOQ 1)
- 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 CD74HC283E?
- 4-bit binary full adder with full internal lookahead carry eliminates ripple-carry delay for faster addition in chained multi-byte arithmetic circuits
- Wide supply voltage range of 2 V to 6 V covers 3.3 V and 5 V logic systems, enabling use in both legacy 5 V TTL and modern low-voltage CMOS designs
- HC CMOS logic family (HC/UH) delivers low quiescent current with TTL-compatible input thresholds and 5.2 mA output sink current at 50 pF load
- 16-pin PDIP through-hole package with RoHS-compliant Pb-free construction simplifies prototyping and breadboard evaluation without SMT equipment
What is CD74HC283E used for?
CD74HC283E is used in digital arithmetic logic units, binary counter accumulators, and hardware-based address offset generators where 4-bit addition with fast lookahead carry is required without a microcontroller. Its 2 V to 6 V operating range and HC CMOS output drive make it suitable for chaining multiple adders to build 8-bit or 16-bit adder trees in FPGA prototyping, educational logic trainers, and retro computing restoration projects. The through-hole DIP package is particularly valued in lab environments and hobby electronics where breadboard-compatible ICs are preferred over surface-mount alternatives.
What are the specifications of CD74HC283E?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | WITH FULL INTERNAL LOOKAHEAD |
| Family | HC/UH |
| JESD-30 Code | R-PDIP-T16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | ADDER/SUBTRACTOR |
| Max I(ol) | 0.0052A |
| Number of Bits | 4 |
| Number of Functions | 4 |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 0.08mA |
| Prop. Delay@Nom-Sup | 42ns |
| Propagation Delay (tpd) | 315ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 4.5V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| ## CD74HC283E Alternates Showing results | Image |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia, Mexico |
Where can I find the CD74HC283E datasheet?
CD74HC283E Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74HC283E?
Compatible alternatives and drop-in replacements for CD74HC283E:
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Frequently Asked Questions
How does the internal lookahead carry in CD74HC283E improve addition speed compared to a ripple-carry adder?
The full internal lookahead carry in CD74HC283E computes carry signals for all 4 bits simultaneously rather than propagating carry sequentially through each bit stage, reducing worst-case carry propagation delay to a fixed value regardless of operand values. In a ripple-carry 4-bit adder the worst-case delay grows linearly with bit count, while the CD74HC283E completes a 4-bit addition in a single gate delay of typically 7 ns to 10 ns at 5 V, making it at least 3x faster for cascaded multi-byte addition.
Can CD74HC283E operate at both 3.3 V and 5 V logic levels, and how does supply voltage affect drive strength?
Yes, the CD74HC283E operates across a 2 V to 6 V supply range, making it directly compatible with both 3.3 V and 5 V logic systems. At 5 V the output can sink 5.2 mA into a 50 pF load, while at 3.3 V the drive strength is reduced proportionally, which may require series resistors or buffer amplifiers when driving long PCB traces or multiple HC CMOS inputs beyond 3 unit loads.
How many CD74HC283E adders need to be cascaded to build a 16-bit binary adder, and how is carry chained?
Building a 16-bit binary adder requires 4 CD74HC283E devices cascaded in series, where the carry-out (C4) of each stage connects to the carry-in (C0) of the next higher stage. Each stage adds 4 bits, so stages 1 through 4 handle bits 3:0, 7:4, 11:8, and 15:12 respectively, and the full 16-bit result is assembled from the 4 sum outputs in parallel. At 5 V, the total addition latency is approximately 4 x 10 ns = 40 ns worst case for the carry chain through all 4 devices.
What output current rating does CD74HC283E provide and how does that limit fan-out in a 5 V logic design?
The CD74HC283E can sink a maximum of 5.2 mA (0.0052 A) per output at 5 V, and the standard HC CMOS input draws less than 1 µA, giving a theoretical fan-out of over 1000 HC inputs. In practice, capacitive loading limits fan-out to about 10 to 15 standard HC gates before propagation delay increases significantly beyond the 7 ns to 10 ns typical value, so driving more than 15 inputs may require a buffer such as 74HC244 to maintain timing budget in high-speed chained adder designs.
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Why Buy from FindMyChip
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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.9012 | $0.90 |
| 7+ | $0.7510 | $5.26 |
| 21+ | $0.5407 | $11.35 |
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