7702301EA

Counter Dividers Overview

The Texas Instruments part number 7702301EA is a military-grade dual BCD decade counter, functionally equivalent to the CD4520BF3A. It operates within a supply voltage range of 3 V to 18 V and supports an operating temperature range from -55 °C to +125 °C. The device is housed in a 16-lead hermetic ceramic dual-in-line package (CDIP) with a J-style lead configuration. It features two independent counters per package, providing robust performance for high-reliability applications requiring radiation tolerance and extended thermal stability.

Counter Dividers Feature Summary

• Dual independent BCD decade counters integrated into a single package
• Hermetically sealed ceramic construction for environmental protection
• Extended industrial and military temperature operational range
• Wide power supply voltage compatibility

Counter Dividers Applications

• Military and defense electronic systems
• Spacecraft telemetry and control units
• High-reliability industrial counting circuits
• Avionics data processing modules

Counter Dividers Procurement Notes

Verify that the specific order explicitly references the 7702301EA designation to ensure receipt of the QML-certified military variant rather than standard catalog equivalents. Confirm that the supplier provides traceable documentation verifying compliance with the required military specifications. Ensure handling procedures account for the hermetic ceramic packaging characteristics during assembly.

Counter Dividers Selection Notes

Select this component when designing systems that mandate radiation hardness and extreme temperature resilience beyond standard commercial limits. The hermetic seal distinguishes it from plastic-packaged alternatives like the CD4520BE or CD4520BNSR. Engineers should evaluate the physical dimensions of the CDIP package against available board space constraints before finalizing the schematic.

Counter Dividers Part Context

This component belongs to the CD4520B family of CMOS logic devices manufactured by Texas Instruments. While standard versions are available in plastic packages such as SOIC and TSSOP, the 7702301EA specifically denotes the hermetic ceramic version intended for harsh environments. It serves as a direct functional replacement for other military-grade variants within the same logical family.

Counter Dividers Replacement Considerations

The CD4520BF3A and CD4520BF3A.A are confirmed public substitutes offering identical functionality and packaging.