4511BDM

Overview

The CD4511BDM is a BCD-to-seven-segment latch/decoder/driver from the 4000/14000/40000 series. It features true output logic and CMOS construction in a CDIP16 package. Key electrical parameters include an input capacitance of 50 pF, a high-level output current (IOH) of 10 mA at VOH = 3.9 V, and a supply voltage range of 3.0 V to 18 V. The device operates within a temperature range of -55 °C to 125 °C and contains one functional unit with 16 terminals.

Feature Summary

• BCD-to-seven-segment decoding with latch storage capability
• High-current sourcing outputs for direct LED drive
• Integrated blanking input and lamp test provision
• Readout blanking on all illegal input combinations

Applications

• Instrument display drivers such as counters and DVMs
• Computer and calculator display interfaces
• Cockpit display systems
• Clock, watch, and timer readouts

Procurement Notes

Verify component authenticity through manufacturer documentation or authorized channels. Confirm package integrity and pin alignment against the CDIP16 specification. Check for radiation measurement data if required for specific environments. Ensure compliance with project material restrictions regarding RoHS status, as this variant may not be compliant.

Selection Notes

Select this component for applications requiring direct driving of seven-segment displays without external transistors. Consider the wide supply voltage range and high output current capabilities. Verify that the ceramic DIP package meets thermal and mechanical requirements. Evaluate compatibility with existing BCD code sources and control logic levels.

Part Context

This part belongs to the 4000/14000/40000 series of CMOS logic devices originally developed by National Semiconductor and later acquired by ON Semiconductor. The CD4511BDM is a legacy component often superseded by modern equivalents. It shares functional similarities with other BCD decoders in the family but is distinguished by its specific packaging and historical manufacturing lineage.

Replacement Considerations

MC14511BD: Functionally equivalent BCD-to-seven-segment decoder/driver with similar specifications and pinout compatibility.