SN74LS670N

Overview

The SN74LS670N is a register file integrated circuit manufactured by Texas Instruments, belonging to the 74LS logic series. It features a 4-by-4 register file architecture with three-state outputs, housed in a 16-pin PDIP package. The device operates on a single power supply ranging from 4.75 V to 5.25 V. It supports four independent channels with four input and four output lines. Key electrical parameters include a propagation delay of 45 ns, a low-level output current of 8 mA, and a high-level output current of -2.6 mA. It functions within a temperature range of 0°C to +70°C.

Feature Summary

• Contains a 4-by-4 register file structure for data storage operations.
• Equipped with three-state outputs to facilitate bus-driven applications.
• Utilizes bipolar LS logic technology for standard TTL compatibility.

Applications

• Data storage in digital systems requiring register file functionality
• Bus-oriented memory interfaces utilizing three-state control
• General-purpose logic circuits within the 74LS family

Procurement Notes

Verify that the component matches the specific SN74LS670N designation rather than other variants in the 74LS670 series. Confirm the package type is PDIP-16 and check RoHS compliance status as indicated in official documentation. Ensure the supplier provides valid traceability for this Texas Instruments part number before finalizing acquisition.

Selection Notes

Select this component when a 4x4 register file with three-state outputs is required within the 74LS logic family. Consider the 45 ns propagation delay and bipolar technology characteristics against system timing requirements. Verify that the operating voltage range of 4.75 V to 5.25 V aligns with the target power supply design constraints.

Part Context

This part belongs to the Texas Instruments 74LS series of bipolar logic devices. It is categorized under registers and register files within the logic ICs product line. The SN74LS670N serves as a specific implementation of a 4-by-4 register file, distinct from other memory or flip-flop components in the broader catalog.

Replacement Considerations

Consult official datasheets for direct pin-compatible substitutes within the same logic family. Verify functional equivalence for any cross-references to ensure identical register file architecture and three-state output capabilities.