SN74ALS518N

Comparators Overview

The SN74ALS518N is an 8-bit identity comparator from Texas Instruments' ALS logic series, housed in a 20-pin PDIP package. It performs comparisons on two 8-bit binary or BCD words, providing active high outputs indicating equality (P=Q). Key electrical parameters include a minimum supply voltage of 4.5 V and a maximum of 5.5 V. The device features open collector outputs with internal 20 kΩ Q-input pull-up resistors. Propagation delays are specified at 15 ns and 33 ns. It operates within a temperature range of 0°C to +70°C.

Comparators Feature Summary

• Performs 8-bit identity comparison for binary or BCD inputs
• Provides active high output signals when input words are equal
• Integrates 20 kΩ pull-up resistors on Q inputs
• Utilizes open collector output configuration

Comparators Applications

• Digital data validation circuits
• Address matching systems
• Equality checking in microprocessor interfaces

Comparators Procurement Notes

Verify the specific suffix 'N' confirms the 20-pin plastic dual in-line package. Confirm RoHS compliance status through official documentation as required by your project specifications. Ensure the operating environment remains within the 0°C to +70°C commercial temperature range to maintain guaranteed performance levels.

Comparators Selection Notes

Select this component when an 8-bit equality check is required with open collector outputs. The ALS series offers improved speed over standard TTL while maintaining compatible power consumption. Verify that the system can accommodate the open collector nature of the outputs and the presence of internal pull-ups on the Q inputs.

Comparators Part Context

This part belongs to the SN74ALS518 family of digital comparators. It is designed for applications requiring precise equality detection between two 8-bit data streams. The device is part of Texas Instruments' broader logic portfolio, specifically targeting high-speed digital logic applications where compact size and reliable performance are essential.

Comparators Replacement Considerations

Check for SN74ALS518 without the N suffix for alternative packaging options. Verify compatibility with other ALS-series logic families if interfacing with existing circuitry.