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Product Detailed Parameters
- Description：IC GATE AND 4CH 2-INP 14SO
- Series：74AHCT
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT),Bulk
- 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-SO
- Package / Case：14-SOIC (0.209", 5.30mm Width)
- Grade：-
- Qualification：-
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Overview
The SN74AHCT08NSR is a quadruple 2-input positive-AND gate from the Texas Instruments SNx4AHCT08 family. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range of -40°C to 125°C. The device features TTL-compatible inputs with high-level input voltage (VIH) of 2 V and low-level input voltage (VIL) of 0.8 V. Output drive capabilities include ±8 mA for both high and low states. Propagation delay is specified at a maximum of 9 ns under a 50 pF load condition.
Feature Summary
- TTL-voltage compatible inputs allow up translation from 3.3 V to 5 V
- Low-drive CMOS technology minimizes output ringing and overshoot
- ESD protection exceeds JESD 22 standards for human-body, machine model, and charged-device model
Applications
- Servers
- Network switches
- PCs and notebooks
- Electronic points-of-sale
Procurement Notes
Verify the NS package designation corresponds to the SOP form factor in your design files. Confirm that the NRND status does not conflict with long-term production requirements. Ensure ESD handling protocols are followed during assembly due to the CMOS construction. Validate thermal dissipation against the junction-to-ambient resistance values provided in the datasheet.
Selection Notes
Select this component when interfacing 3.3 V logic sources with 5 V buses requiring AND functionality. The slow rise and fall times make it suitable for applications where signal integrity and reduced electromagnetic interference are priorities over high-speed switching. Verify that the 8 mA drive current meets the load requirements of the destination circuitry.
Part Context
This part belongs to the SNx4AHCT08 series of quadruple 2-input positive-AND gates. The 'NS' suffix indicates the SOP package variant, while 'SR' denotes tape-and-reel packaging. The device utilizes CMOS technology to provide balanced output drive characteristics suitable for bus-interface applications.
Replacement Considerations
SN74AHCT08N
FAQ
How does the device 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 low-drive output characteristic?
The low-drive capability results in slower edge rates, which minimizes overshoot, undershoot, and ringing on the output signals.
