SN74LS299N

Shift Registers Overview

The SN74LS299N is an 8-bit universal shift/store register manufactured by Texas Instruments, belonging to the SN74LS logic family. It features bipolar logic with two independent circuits and three-state outputs. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports serial/parallel to serial/parallel counting sequences. It exhibits a propagation delay of 39 ns and functions reliably across an operating temperature range of 0°C to +70°C. The component is housed in a 20-pin PDIP package designed for through-hole mounting.

Shift Registers Feature Summary

• Universal shift and store capability supporting both serial and parallel data transfer modes
• Three-state outputs enabling direct connection to system buses without external buffers
• Bipolar LS logic construction providing standard TTL compatibility

Shift Registers Applications

• Data storage and buffering in digital communication systems
• Parallel-to-serial and serial-to-parallel conversion interfaces
• General-purpose shift register applications in control logic

Shift Registers Procurement Notes

Verify that the ordering suffix matches 'N' to confirm the specific PDIP-20 through-hole package variant. Confirm the manufacturer is Texas Instruments, as this part number is not produced by onsemi. Ensure the datasheet corresponds to the SN74LS299 specification to validate electrical parameters such as the 39 ns propagation delay and 4.75 V to 5.25 V supply requirements before procurement.

Shift Registers Selection Notes

Select this component when an 8-bit universal shift register with bus-compatible three-state outputs is required. The LS logic series offers a balance of speed and power consumption suitable for general digital applications. Verify that the 20-pin DIP form factor aligns with the target PCB layout and that the 0°C to +70°C commercial temperature range meets the environmental specifications of the end application.

Shift Registers Part Context

This component belongs to the Texas Instruments SN74LS299 series of universal shift/store registers. It is distinct from other logic families due to its specific combination of bidirectional shifting and parallel loading capabilities within a single integrated circuit. The 'N' suffix denotes the plastic dual-in-line package configuration, differentiating it from ceramic or surface-mount variants within the same functional family.

Shift Registers Replacement Considerations

Compatible substitutes include the SN54LS299 for military temperature ranges and the SN74S299 for higher speed performance. Verify pinout compatibility and electrical characteristics against the original datasheet before substitution.