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Product Detailed Parameters
- Description：IC D-TYPE TRANSP SGL 8:8 20TSSOP
- Series：74AHCT
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT),Bulk
- 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：Surface Mount
- Package / Case：20-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：20-TSSOP
- Grade：-
- Qualification：-
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Overview
The SN74AHCT373PWR 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 VCC = 5V with a load capacitance of 15pF. It is housed in a TSSOP-20 package.
Feature Summary
- TTL-compatible CMOS inputs for direct interfacing with standard logic devices
- Balanced 3-state outputs allowing high-impedance state control via OE pin
- Latch enable (LE) input controls data transparency from D to Q outputs
Applications
- Parallel data storage
- Digital bus buffer
Procurement Notes
Verify the specific ordering suffix 'PWR' corresponds to the TSSOP-20 package and reel packaging configuration. Confirm that the component meets RoHS compliance requirements as indicated in the manufacturer's documentation. Ensure the procurement source provides valid traceability for production-grade silicon.
Selection Notes
Select this component when an octal latch with 3-state output capability is required for 5V logic systems. The AHCT series ensures compatibility with TTL input thresholds while maintaining CMOS performance characteristics. Verify that the operating temperature range of -40°C to +85°C aligns with the environmental conditions of the target application.
Part Context
This part belongs to the SNx4AHCT373 family, which includes variants with different packages such as SOIC, SSOP, and VQFN. The 'SN74' prefix indicates commercial grade temperature rating, while 'AHCT' denotes advanced high-speed CMOS technology with TTL-compatible inputs. The 'PWR' suffix specifically identifies the TSSOP surface-mount package variant.
Replacement Considerations
Direct replacements include other SN74AHCT373 variants with different packages like SN74AHCT373DW or SN74AHCT373DB. Cross-series alternatives such as SN74HCT373 or SN74LVC373 may require voltage level adjustments.
