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Product Detailed Parameters
- Description：IC GATE NAND 2CH 4-INP 14SOIC
- Series：74ALS
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT),Bulk
- Logic Type：NAND Gate
- Number of Circuits：2
- Number of Inputs：4
- Features：-
- Voltage - Supply：4.5V ~ 5.5V
- Current - Quiescent (Max)：-
- Current - Output High, Low：400µA, 8mA
- Input Logic Level - Low：0.8V
- Input Logic Level - High：2V
- Max Propagation Delay @ V, Max CL：12.5ns @ 5V, 50pF
- Operating Temperature：0°C ~ 70°C
- 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 SN74ALS20ADR is a dual 4-input positive-NAND gate from the Texas Instruments ALS logic family. It operates on a bipolar technology with push-pull outputs, supporting a supply voltage range of 4.5V to 5.5V. The device features high-speed performance with propagation delays between 10ns and 50ns and a maximum data rate of 75Mbps. It provides an output low current (IOL) of up to 8mA and is rated for catalog operation within a commercial temperature range of 0°C to 70°C.
Feature Summary
- Dual-channel architecture providing two independent 4-input NAND gates in a single package
- High-speed switching capabilities suitable for demanding digital logic applications
- Robust push-pull output stage designed for strong drive capability
Applications
- General-purpose digital logic circuits requiring NAND functionality
- Data acquisition systems utilizing high-speed signal processing
- Industrial control logic interfaces
Procurement Notes
Verify the specific suffix 'ADR' against the manufacturer's official datasheet to confirm the SOIC-14 surface-mount package and tape-and-reel shipping configuration. Ensure the component meets the required catalog rating and commercial temperature specifications for your design environment before finalizing procurement.
Selection Notes
Select this component when a compact dual 4-input NAND solution is needed with faster switching speeds than standard LS series devices. The ALS technology offers improved speed-power product characteristics. Confirm that the system power supply remains strictly within the 4.5V to 5.5V operational limits to ensure reliable logic levels.
Part Context
This part belongs to the SN74ALS20A family, which includes variants such as SN74ALS20AN and SN74ALS20ANSR. These components share identical logical functions but differ in packaging options like PDIP or SOIC and reel quantities. The SN74ALS20ADR specifically denotes the surface-mount variant intended for automated assembly processes.
Replacement Considerations
Compatible substitutes include SN74ALS20AN and SN74ALS20ANSR. Verify pin compatibility and package dimensions when transitioning between through-hole and surface-mount versions.
