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Product Detailed Parameters
- Description：IC GATE NOR 4CH 2-INP 14DIP
- Series：74ALS
- Mfr：Texas Instruments
- Package：Bulk,Tube
- Logic Type：NOR Gate
- Number of Circuits：4
- Number of Inputs：2
- 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：12ns @ 5V, 50pF
- Operating Temperature：0°C ~ 70°C
- Mounting Type：Through Hole
- Supplier Device Package：14-PDIP
- Package / Case：14-DIP (0.300", 7.62mm)
- Grade：-
- Qualification：-
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Overview
The SN74ALS02AN is a quadruple 2-input positive-NOR gate from the Texas Instruments ALS logic series. It operates within a supply voltage range of 4.5 V to 5.5 V and features a propagation delay of 12 ns. The device provides a low-level output current of 8 mA and a high-level output current of -400 uA. It is housed in a 14-pin PDIP package and supports an operating temperature range from 0°C to +70°C.
Feature Summary
- Contains four independent 2-input NOR logic gates
- Utilizes Advanced Low-power Schottky (ALS) technology for optimized speed and power consumption
- Provides standard TTL-compatible input and output characteristics
Applications
- General-purpose digital logic circuit design
- Boolean logic implementation in embedded systems
- Signal processing within industrial control equipment
Procurement Notes
Verify that the ordering suffix matches 'AN' to ensure the correct through-hole PDIP-14 package configuration. Confirm RoHS compliance status as indicated in the official datasheet. Ensure the component meets the specified commercial temperature range requirements for the intended application environment before finalizing procurement.
Selection Notes
Select this component when a quad 2-input NOR function is required with ALS performance levels. It serves as a direct replacement for older 74S02 variants where lower power dissipation is necessary. Consider the PDIP-14 package constraints for PCB layout and verify that the 8 mA sink current capability meets the load requirements of the driven circuits.
Part Context
This part belongs to the SN74ALS02A family, which includes variations such as the SOIC-14 surface mount version (SN74ALS02ANSR). The ALS series represents an evolution of the original 74S logic family, offering improved switching speeds while significantly reducing power consumption per gate.
Replacement Considerations
The SN74ALS02ANSR is a pin-compatible surface mount alternative. Other ALS-series NOR gates like the SN74ALS27AN offer different input configurations.
