DS3487M/NOPB

Overview

The DS3487M/NOPB is a quad TRI-STATE line driver compliant with EIA RS-422 standards. It operates on a single 5V supply (4.75V to 5.25V) within a commercial temperature range of 0°C to +70°C. The device features four independent drivers with typical propagation delays of 10 ns and output rise/fall times under 15 ns. Input pins are PNP buffered for TTL compatibility, minimizing loading effects. Power supply current ranges from 50 mA to 80 mA in active mode. Outputs enter a high-impedance state when the control pin is low.

Feature Summary

• Four independent TRI-STATE outputs compliant with EIA RS-422 balanced voltage digital interface standards
• TTL-compatible inputs utilizing PNP buffering to minimize input loading across logic states
• Fast switching performance with typical propagation delays of 10 ns and output transition times under 15 ns

Applications

• Balanced voltage digital interface circuits requiring RS-422 compliance
• Systems requiring multiple independent differential line drivers with TRI-STATE capability
• Industrial communication interfaces operating at standard 5V logic levels

Procurement Notes

Verify the specific package variant against the datasheet, as the 'M' suffix typically denotes SOIC packaging while other suffixes may indicate PDIP or tape-and-reel options. Confirm the exact ordering code matches the required thermal and mechanical specifications for the target PCB layout. Cross-reference the manufacturer's latest lifecycle status to ensure availability for production.

Selection Notes

Select this component for designs requiring four independent RS-422 drivers with TRI-STATE functionality. Ensure the system power supply remains within the 4.75V to 5.25V range to maintain electrical characteristics. Verify that the ambient operating temperature stays within the 0°C to +70°C commercial limit. Consider the 80 mA maximum active current draw for power budgeting calculations.

Part Context

This device belongs to the DS3487 family of quad line drivers manufactured by Texas Instruments. It serves as a direct replacement for legacy components like the MC3487 and DS8924 due to pin compatibility. The series provides standardized RS-422 signaling solutions for industrial and commercial data transmission applications requiring robust differential output stages.

Replacement Considerations

The DS3487M/NOPB is pin-compatible with the MC3487 and DS8924. Designers can substitute these parts directly if the electrical parameters meet the application requirements. Verify that the alternative component supports the same TRI-STATE control logic and voltage levels.