SN74AS373DW

Overview

The SN74AS373DW is an octal transparent D-type latch with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a recommended operating temperature of 0°C to 70°C. The device features a propagation delay of 6 ns maximum from data input to output. Electrical characteristics include a low-level output current capability of 32 mA and a high-level output current of -15 mA. It is housed in a 20-pin SOIC (DW) package.

Feature Summary

• Features eight latches in a single package for full parallel access loading
• Provides 3-state bus-driving true outputs designed for highly capacitive or low-impedance loads
• Utilizes pnp inputs to reduce dc loading on data lines
• Includes buffered control inputs for reliable operation

Applications

• Implementing buffer registers
• I/O port implementations
• Bidirectional bus drivers
• Working registers

Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest Package Option Addendum, as availability and status may vary between tube and tape-and-reel configurations. Confirm that the component meets RoHS compliance requirements for your target market. Ensure the selected package variant matches the thermal impedance specifications required for your application environment.

Selection Notes

Select this component when high-speed performance is required, as indicated by the 6 ns propagation delay characteristic of the AS logic family. Ensure the design accommodates the 4.5 V to 5.5 V supply voltage range. Verify that the 32 mA low-level output current meets the drive requirements for the connected load impedance and capacitance.

Part Context

This part belongs to the SN54/74AS series of octal transparent D-type latches. It shares functional similarities with the SN74ALS373A but offers faster switching speeds. The DW suffix denotes the standard plastic small-outline package. Other variants exist in PDIP and SOP packages, offering different mounting options while maintaining identical logical functionality.

Replacement Considerations

SN74ALS373ADW is a documented alternative within the same datasheet family, though it exhibits slower switching characteristics.