SN74AHCT373PWRG4

Overview

The SN74AHCT373PWRG4 is an octal transparent D-type latch with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 4.5V to 5.5V and features TTL-compatible inputs. The device provides balanced CMOS 3-state outputs capable of sourcing and sinking currents up to 8mA. Propagation delay is specified at 9.5ns maximum at 5V VCC with a 15pF load. It is housed in a 20-pin TSSOP package.

Feature Summary

• TTL-compatible CMOS inputs designed for direct interfacing with TTL logic devices
• Balanced CMOS 3-state outputs allowing high-impedance, driving high, or driving low states
• Latch enable (LE) input controls data transparency while output enable (OE) manages bus isolation

Applications

• Parallel data storage
• Digital bus buffer

Procurement Notes

Verify the G4 suffix indicates RoHS compliance and green manufacturing options. Confirm the PW package designation corresponds to the 20-pin Thin Shrink Small Outline Package (TSSOP). Ensure the operating temperature range meets system requirements, as the SN74 variant supports -40°C to 85°C. Cross-reference the datasheet revision date to ensure current electrical characteristics are applied.

Selection Notes

Select this component when interfacing between TTL and CMOS logic families requiring octal latching. The AHCT series ensures compatibility with standard TTL voltage levels. Consider the 3-state output capability for bus sharing applications. Verify that the 9.5ns propagation delay meets timing constraints for the target digital bus speed.

Part Context

This part belongs to the SNx4AHCT373 family of octal transparent D-type latches. The 'SN' prefix denotes commercial grade, while 'AHCT' specifies advanced high-speed CMOS technology with TTL-compatible inputs. The 'PWR' suffix identifies the specific tape-and-reel packaging and TSSOP form factor used for surface-mount assembly.

Replacement Considerations

Direct substitutes include SN74AHCT373PW and SN74AHCT373PWR. These parts share identical logical functions and pinouts but may differ in packaging format or reel specifications. Verify thermal resistance values if replacing with different package types like SOIC or SSOP.