DM81LS97AN

Overview

The DM81LS97AN is a bus driver manufactured by Fairchild Semiconductor, utilizing low-power Schottky (LPS) TTL technology. It features two independent functions, each driving four bits of true data output. The device operates with a nominal supply voltage of 5 V and supports a ceramic dual in-line package (CDIP20). Outputs are capable of three-state operation, allowing high-impedance states when enabled. The component is rated for an operating temperature range from 0 °C to 70 °C.

Feature Summary

• Provides two independent 4-bit bus drivers with true logic outputs
• Utilizes low-power Schottky TTL technology for reduced power dissipation
• Features three-state outputs controlled by common enable lines via NOR gates

Applications

• Bus-oriented memory and signal switching applications
• Clock drivers and buffer circuits
• TTL-to-TTL interface circuits

Procurement Notes

Verify the specific suffix 'AN' against official Fairchild documentation to confirm the ceramic DIP20 package type. Ensure compatibility with standard 5V TTL logic levels. Confirm RoHS status as historical LPS devices may not meet current environmental directives. Cross-reference datasheet revision dates to validate pinout and electrical characteristics.

Selection Notes

Select this component when designing systems requiring isolated bidirectional or unidirectional data transfer using standard TTL logic families. The dual-function architecture allows efficient routing of multiple data buses within a single package footprint. Consider thermal management requirements based on the specified typical power dissipation values for LPS technology.

Part Context

This part belongs to the DM81LSxxA series of low-power Schottky logic devices produced by Fairchild Semiconductor. It serves as a functional equivalent to other industry-standard 3-state octal bus drivers but offers distinct internal gating for two separate 4-bit channels rather than a single unified control line for all outputs.

Replacement Considerations

Compatible substitutes include the DM81LS96AWM for inverting buffer applications and generic 74LS244 equivalents if pinout compatibility is verified. Check manufacturer obsolescence notices for legacy LPS components.