SN74LS374DBR

Flip Flops Overview

The SN74LS374DBR is an octal D-type edge-triggered flip-flop manufactured by Texas Instruments in the LS logic series. It features eight independent D-type flip-flops with three-state outputs housed in a 20-SSOP package. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports a maximum clock frequency of 50 MHz. Key electrical parameters include a propagation delay of 28 ns at 5 V, high-level output current of -2.6 mA, and low-level output current of 24 mA. Static current consumption is specified at 40 mA. The component functions as a non-inverting latch suitable for surface-mount assembly.

Flip Flops Feature Summary

• Octal configuration providing eight independent data storage elements
• Edge-triggered operation synchronized to positive clock transitions
• Three-state outputs enabling direct bus interfacing
• Non-inverting logic polarity for straightforward signal routing

Flip Flops Applications

• Parallel-to-serial data conversion circuits
• Register file implementations in microprocessor systems
• Bus interface buffering for address or data lines
• Timing synchronization stages in digital control logic

Flip Flops Procurement Notes

Verify the specific suffix 'DBR' corresponds to the SSOP-20 package and reel packaging format required for your assembly process. Confirm RoHS compliance status and moisture sensitivity level prior to ordering. Ensure the supplier provides official datasheets matching the Texas Instruments part number to guarantee functional equivalence. Check for alternative suffixes if different tape-and-reel quantities are needed.

Flip Flops Selection Notes

Select this component when an octal register with tri-state capability is required in a space-constrained surface-mount design. The LS series offers compatibility with standard TTL logic levels while maintaining lower power consumption than standard 74S series devices. Consider the 28 ns propagation delay against system timing requirements. Verify that the 20-SSOP footprint matches the PCB layout constraints compared to SOIC alternatives.

Flip Flops Part Context

This device belongs to the Texas Instruments SN74LS374 family of octal D-type flip-flops. It serves as the edge-triggered counterpart to the transparent latch variants like the SN74LS373. The 'D' indicates a plastic small-outline package, while 'B' specifies the SSOP variant. The 'R' denotes reel packaging. It is part of the broader 74xx logic ecosystem used in general-purpose digital electronics.

Flip Flops Replacement Considerations

SN74LS374DR is a pin-compatible alternative in the SOIC-20 package offering identical logical functionality. SN74LS374N provides a through-hole DIP-20 option for prototyping or legacy board upgrades. Cross-reference manufacturer-specific suffixes for temperature range or packaging variations before substituting.