74HC283DB,118

Overview

The 74HC283DB,118 is a high-speed Si-gate CMOS 4-bit binary full adder with fast carry, manufactured by NXP USA Inc. It operates within a supply voltage range of 2.0 V to 6.0 V and functions across an ambient temperature range of -40 °C to +125 °C. The device adds two 4-bit binary words plus an incoming carry (CIN), producing sum outputs (S1-S4) and an outgoing carry (COUT). Propagation delays vary from 15 ns to 240 ns depending on voltage and temperature. It complies with JEDEC standard no. 7A and features ESD protection exceeding 2000 V (HBM).

Feature Summary

• High-speed 4-bit binary addition with fast internal look-ahead carry.
• Cascadable in 4-bit increments for extended arithmetic operations.
• Low-power dissipation characteristics suitable for energy-efficient designs.
• ESD protection exceeds 2000 V according to HBM standards.

Applications

• Implementing 3-bit or smaller binary adders.
• Configuring as a 2-bit and 1-bit adder combination.
• Constructing 5-input encoders with equally weighted inputs.
• Building 5-input majority gates.

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific SSOP-16 package variant matches design requirements. Check current product status as discontinuation notifications may apply. Ensure compliance with RoHS directives and relevant environmental regulations before integration into final assemblies.

Selection Notes

Select this component for applications requiring precise 4-bit binary summation with minimal propagation delay. Consider the wide operating voltage range for flexibility in power supply design. Evaluate thermal management needs given the specified temperature limits. Verify pin compatibility with existing low power Schottky TTL (LSTTL) footprints if migrating from older logic families.

Part Context

This part belongs to the 74HC series, representing high-speed silicon-gate CMOS technology. It serves as a digital logic integrated circuit designed for general-purpose arithmetic operations. The device is pin-compatible with LSTTL, facilitating easier upgrades in legacy systems while offering improved speed and lower power consumption compared to earlier transistor-transistor logic implementations.

Replacement Considerations

The 74HC283PW,118 offers an alternative TSSOP-16 package option. The 74HC283N provides a DIP-16 package variant. The 74HC283D utilizes an SO-16 package. All variants maintain identical logical functionality and electrical specifications.