MC14008BDR2

Specialty Logic Overview

The MC14008BDR2 is a 4-bit full adder constructed with MOS P-Channel and N-Channel enhancement mode devices. It features four full adders with fast internal look-ahead carry output for high-speed binary addition. The device operates within a supply voltage range of 3.0 Vdc to 18 Vdc. Key electrical parameters include propagation delays ranging from 230 ns to 800 ns depending on voltage, low-level output current of 4.2 mA, and high-level output current of -4.2 mA. It is housed in an SOIC-16 package.

Specialty Logic Feature Summary

• Features fast parallel carry output bit for high-speed operation when cascaded with other adders.
• Includes diode protection on all inputs to guard against damage from high static voltages or electric fields.
• All outputs are buffered and capable of driving two Low-Power TTL loads or one Low-Power Schottky TTL load.

Specialty Logic Applications

• Binary addition circuits
• Arithmetic applications requiring 4-bit processing
• Cascaded multi-bit adder systems

Specialty Logic Procurement Notes

Verify the specific ordering suffix 'D' corresponds to the SOIC-16 package configuration required for your design. Confirm RoHS compliance status as indicated by the manufacturer's documentation, noting that Pb-Free packages may carry a 'G' suffix. Ensure the component meets the environmental operating temperature range of -55°C to +125°C for your intended application environment.

Specialty Logic Selection Notes

Select this component for designs requiring a monolithic 4-bit arithmetic logic unit with CMOS compatibility. Consider the propagation delay specifications relative to your system clock speed. Verify that the input voltage constraints remain within the VSS to VDD range to ensure proper functionality and avoid damage to the high-impedance circuit inputs.

Specialty Logic Part Context

This part belongs to the MC14000 series of CMOS logic integrated circuits manufactured by onsemi. It serves as a fundamental building block for digital arithmetic operations. The device is functionally compatible with industry-standard CD4008B specifications, allowing for pin-for-pin replacement in existing designs utilizing legacy 4000-series logic components.

Specialty Logic Replacement Considerations

The datasheet explicitly states the device is a pin-for-pin replacement for the CD4008B. Designers migrating from other manufacturers should verify that the alternative part meets the same electrical characteristics, particularly the propagation delay times and output drive currents specified for the MC14008B.

Specialty Logic FAQ

How does the MC14008B handle unused inputs?

Unused inputs must always be tied to an appropriate logic voltage level, either VSS or VDD, to ensure proper operation and prevent damage due to high static voltages.

What is the maximum power dissipation per package?

The maximum power dissipation (PD) per package is rated at 500 mW.