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Product Detailed Parameters
- Description：IC GATE AND 4CH 2-INP 14SOIC
- Series：74AHCT
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Logic Type：AND Gate
- Number of Circuits：4
- Number of Inputs：2
- Features：-
- Voltage - Supply：4.5V ~ 5.5V
- Current - Quiescent (Max)：2 µA
- Current - Output High, Low：8mA, 8mA
- Input Logic Level - Low：0.8V
- Input Logic Level - High：2V
- Max Propagation Delay @ V, Max CL：7.9ns @ 5V, 50pF
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：14-SOIC
- Package / Case：14-SOIC (0.154", 3.90mm Width)
- Grade：-
- Qualification：-
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Overview
The SN74AHCT08DR is a quadruple 2-input positive-AND gate manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and features TTL-compatible inputs with low-level input voltages up to 0.8 V. The device provides balanced output drive currents of ±8 mA and includes ESD protection exceeding 2000 V via the human-body model. It is housed in a 14-pin SOIC package.
Feature Summary
- TTL-voltage compatible inputs allow for signal translation from 3.3 V to 5 V systems
- Low-drive outputs designed to minimize overshoot, undershoot, and output ringing
- High electrostatic discharge protection ratings across multiple testing standards
Applications
- Servers
- Network switches
- PCs and notebooks
- Electronic points-of-sale
Procurement Notes
Verify that the component matches the specific SN74AHCT08DR designation to ensure correct logic family and package type. Confirm RoHS compliance status and lead finish specifications against current datasheet revisions. Validate operating temperature ranges and thermal resistance values for your specific PCB layout requirements before finalizing procurement.
Selection Notes
Select this component when interfacing between 3.3 V logic sources and 5 V loads requiring AND functionality. The slow rise and fall times make it suitable for applications where minimizing signal ringing is critical. Ensure the design accommodates the specified 4.5 V to 5.5 V supply voltage constraints and utilizes unused inputs properly to prevent floating states.
Part Context
This part belongs to the SNx4AHCT08 series of quadruple 2-input positive-AND gates. It utilizes CMOS technology with TTL-compatible inputs, enabling level shifting capabilities. The device is available in various packages including SOIC, SSOP, TSSOP, and VQFN, with the DR suffix specifically denoting the SOIC surface-mount package variant.
Replacement Considerations
SN74AHCT08DBR (SSOP Package)
FAQ
How does the SN74AHCT08 handle unused inputs?
All unused inputs must be connected to either VCC or GND to prevent undefined operational states caused by floating voltages.
What is the purpose of the slow edge rates on this device?
The slow rise and fall times are designed to reduce ringing on the output signals, making the device suitable for bus-interface applications where output integrity is a concern.
