SN74LS670NG4

Overview

The SN74LS670NG4 is a register file integrated circuit manufactured by Texas Instruments, belonging to the SN74LS series. It features a 4-by-4 register architecture with three-state outputs and operates on bipolar logic technology. The device is housed in a 16-pin PDIP package designed for through-hole mounting. Electrical specifications 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 supply voltage range of 4.75 V to 5.25 V and supports an operating temperature range from 0°C to +70°C.

Feature Summary

• Contains a 4-by-4 register file structure providing four independent channels.
• Equipped with three-state outputs to facilitate bus-driven systems.
• Utilizes LS logic family technology for standard TTL compatibility.

Applications

• Data storage in digital computing architectures
• Register file implementation in microprocessor designs
• Bus interface circuits requiring tri-state control

Procurement Notes

Verify that the G4 suffix indicates compliance with specific environmental directives such as RoHS standards. Confirm the PDIP-16 package type matches the target PCB footprint requirements. Ensure the component meets the required industrial temperature range specifications for the intended application environment.

Selection Notes

Select this component when a 4x4 register file with tri-state capability is required within the LS logic family. Consider the PDIP-16 package for through-hole assembly processes. Verify that the 45 ns propagation delay and 5V power supply constraints align with the system design parameters.

Part Context

This part belongs to the Texas Instruments SN74LS670 series of register files. It shares functional characteristics with variants like the SN74LS670N and SN74LS670NSR, differing primarily in packaging and manufacturing revisions. The G4 suffix typically denotes a lead-free or environmentally compliant version of the standard LS logic register file.

Replacement Considerations

Compatible substitutes include the SN74LS670N and SN74LS670NSR. These parts share identical logical functionality and pin configurations but may differ in package style or manufacturing revision details.