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Product Detailed Parameters
- Description：IC D-TYPE TRANSP SGL 8:8 20DIP
- Series：74AHCT
- Mfr：Texas Instruments
- Package：Bulk,Tube
- Logic Type：D-Type Transparent Latch
- Circuit：8:08
- Output Type：Tri-State
- Voltage - Supply：4.5V ~ 5.5V
- Independent Circuits：1
- Delay Time - Propagation：1ns
- Current - Output High, Low：8mA, 8mA
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Through Hole
- Package / Case：20-DIP (0.300", 7.62mm)
- Supplier Device Package：20-PDIP
- Grade：-
- Qualification：-
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Overview
The SN74AHCT373N is an octal transparent D-type latch with three-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 a propagation delay of 9.5ns at 5V VCC with a 15pF load. It utilizes a 20-pin PDIP package for through-hole mounting. Electrical characteristics include a low-level output current of 8mA, a high-level output current of -8mA, and a maximum static current of 40µA.
Feature Summary
- Features balanced CMOS three-state outputs capable of sourcing and sinking similar currents.
- Includes TTL-compatible CMOS inputs designed to interface directly with TTL logic devices.
- Contains eight D-type latches sharing common latch enable (LE) and output enable (OE) control signals.
Applications
- Parallel data storage
- Digital bus buffer
Procurement Notes
Verify the specific ordering suffix 'N' corresponds to the 20-pin PDIP package configuration. Confirm that the component meets RoHS compliance requirements if applicable to the project specifications. Ensure the manufacturer is identified as Texas Instruments to guarantee authenticity and access to official documentation.
Selection Notes
Select this component when a system requires an octal latch with three-state capability and TTL input compatibility. It is suitable for designs operating strictly within the 4.5V to 5.5V supply voltage range. Consider the 20-pin PDIP package constraints for through-hole assembly processes and available board space.
Part Context
This part belongs to the SNx4AHCT373 family of octal transparent D-type latches. The family includes various package options such as TSSOP, SOIC, SSOP, and VQFN. The 'SN74' prefix indicates commercial temperature grade operation, while the 'AHCT' designation specifies the advanced high-speed CMOS technology with TTL-compatible inputs.
Replacement Considerations
Other packages in the same logical family, such as SN74AHCT373PW or SN74AHCT373DW, offer identical electrical functionality but utilize different surface-mount footprints. Direct pin-to-pin replacement is not possible with these variants due to physical package differences.
