SN74AHC373DBR

Overview

The SN74AHC373DBR is an octal transparent D-type latch from the Texas Instruments 74AHC series, housed in a 20-pin SSOP package. It operates within a supply voltage range of 2 V to 5.5 V and supports a wide operating temperature range from -40°C to +85°C. The device features non-inverting outputs with three-state capability, providing low-level output current of 32 mA and high-level output current of -8 mA. Propagation delays are specified at 14.9 ns and 9.2 ns, with a static current consumption of 4 µA.

Feature Summary

• Octal transparent D-type latch architecture with eight independent data paths
• Three-state outputs for effective bus-driven line applications
• Wide power supply compatibility ranging from 2 V to 5.5 V
• Low static power consumption suitable for battery-operated systems

Applications

• Parallel-to-serial data conversion circuits
• Bus-oriented memory register implementations
• Clock domain crossing synchronization stages
• General-purpose digital storage modules

Procurement Notes

Verify the specific package variant, as the DBR suffix denotes SSOP-20, which differs from the SOIC or TVSOP packages found in other AHC373 variants. Confirm RoHS compliance status and moisture sensitivity level requirements against your assembly process specifications before finalizing procurement orders.

Selection Notes

Select this component when an octal latch with three-state outputs is required within the 74AHC logic family. Ensure the design accommodates the 2 V to 5.5 V supply range and that the SSOP-20 footprint fits the PCB layout constraints. Verify that the propagation delay characteristics meet the system timing requirements.

Part Context

This part belongs to the Texas Instruments 74AHC logic family, designed for high-speed CMOS applications. It serves as a standard octal latch solution, offering performance improvements over older HC series devices while maintaining pinout compatibility with similar industry-standard logic families for easier migration.

Replacement Considerations

SN74AHC373DWR (SOIC-20 package) and SN74AHC373DGVR (TVSOP-20 package) offer identical electrical functionality with different physical footprints.