SN74BCT373DWR

Overview

The SN74BCT373DWR is an octal transparent D-type latch with 3-state outputs manufactured by Texas Instruments. It utilizes state-of-the-art BiCMOS design to significantly reduce quiescent current (ICCZ). The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating free-air temperature range of 0°C to 70°C. It features full parallel access for loading and includes buffered output-enable inputs to drive bus lines or buffer memory address registers without interface components.

Feature Summary

• State-of-the-art BiCMOS design reduces ICCZ
• Full parallel access for loading
• 3-state outputs drive bus lines or buffer memory address registers
• ESD protection exceeds JESD 22 – 2000-V human-body model

Applications

• Implementing buffer registers
• I/O ports
• Bidirectional bus drivers
• Working registers

Procurement Notes

Verify the specific ordering suffix 'DWR' corresponds to the SOIC-20 package in tape and reel format. Confirm that the application environment remains within the specified 0°C to 70°C operating temperature range. Ensure OE is tied to VCC through a pullup resistor during power-up or power-down to maintain the high-impedance state. Check for any RoHS compliance requirements relative to the manufacturing date.

Selection Notes

Select this component when designing systems requiring octal latching with 3-state capabilities at standard 5V logic levels. The BiCMOS technology offers lower power consumption compared to older bipolar families while maintaining robust drive currents. Consider the SOIC-20 surface-mount package for space-constrained PCB layouts. Verify compatibility with existing bus architectures requiring high-impedance states.

Part Context

This part belongs to the SN54/74BCT373 family of octal transparent D-type latches. The BCT series combines the speed of bipolar circuits with the low power of CMOS technologies. The 'SN74' designation indicates commercial grade availability, distinguishing it from the military-grade SN54 variants which support wider temperature ranges.

Replacement Considerations

Direct substitutes include other SN74BCT373 variants such as SN74BCT373DW (tube) or SN74BCT373DBR (SSOP), provided pinout compatibility is verified.