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Product Detailed Parameters
- Description：IC GATE AND 4CH 2-INP 14SSOP
- 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-SSOP
- Package / Case：14-SSOP (0.209", 5.30mm Width)
- Grade：-
- Qualification：-
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Overview
The SN74AHCT08DBR 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 voltage of 0.8 V and high-level input voltage of 2 V. The device provides balanced output drive currents of ±8 mA. Propagation delay ranges from 1 ns to 9 ns depending on load capacitance (15 pF or 50 pF). It is housed in a 14-pin SSOP package and supports an operating temperature range of -40°C to +125°C.
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 specific ordering suffix 'DBR' corresponds to the SSOP-14 package and tape-and-reel carrier format. Confirm RoHS compliance status and lead finish specifications against the latest TI Package Option Addendum. Ensure design requirements match the recommended operating conditions for the AHCT logic family.
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 are suitable for applications where minimizing signal ringing is critical. Verify that the required propagation delay fits the system timing constraints under the expected load capacitance.
Part Context
This part belongs to the SNx4AHCT08 series of quadruple 2-input positive-AND gates. The 'AHCT' designation indicates compatibility with both 5 V CMOS and 5 V TTL logic families. The 'DBR' suffix specifies the surface-mount SSOP package type and reel packaging configuration.
Replacement Considerations
SN74AHCT08DR
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 maximum static current consumption?
The maximum static current (ICC) is 20 µA at VCC = 5.5 V with inputs at VCC or GND and no output load.
