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Product Detailed Parameters
- Description：IC GATE NOR
- Series：*
- Mfr：Texas Instruments
- Package：Bulk
- Logic Type：-
- Number of Circuits：-
- Number of Inputs：-
- Features：-
- Voltage - Supply：-
- Current - Quiescent (Max)：-
- Current - Output High, Low：-
- Input Logic Level - Low：-
- Input Logic Level - High：-
- Max Propagation Delay @ V, Max CL：-
- Operating Temperature：-
- Mounting Type：-
- Supplier Device Package：-
- Package / Case：-
- Grade：-
- Qualification：-
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Overview
The SN74ALS805AN3 is a hex 2-input NOR driver from Texas Instruments, part of the ALS-TTL logic family. It features six independent NOR gates in a 20-pin plastic dual in-line package (PDIP). The device operates at a nominal supply voltage of 5 V with a maximum supply current of 32 mA. It supports a commercial temperature range from 0 °C to 70 °C and utilizes through-hole terminals with a 2.54 mm pitch.
Feature Summary
- Contains six independent 2-input NOR logic functions within a single integrated circuit
- Utilizes Advanced Low-power Schottky TTL technology for high-speed performance
- Designed for standard 5 V digital logic systems
Applications
- General-purpose digital logic processing
- Data bus control circuits
- Address decoding networks
Procurement Notes
Verify component authenticity by checking manufacturer markings against official datasheets. Confirm the specific suffix 'N3' corresponds to the PDIP-20 package variant. Ensure compliance with project requirements regarding RoHS status, as documentation indicates non-compliance for this specific revision. Validate pinout compatibility before integration into existing PCB layouts.
Selection Notes
Select this component when multiple independent NOR operations are required in a compact DIP format. The ALS series offers a balance of speed and power consumption suitable for general digital applications. Consider the 20-pin footprint constraints and through-hole mounting requirements during mechanical design. Verify that the 5 V operating voltage aligns with the system's power distribution network.
Part Context
This device belongs to the SN74ALS series of advanced low-power Schottky logic ICs manufactured by Texas Instruments. The series is characterized by improved speed-to-power product compared to standard TTL. The SN74ALS805 specifically provides hex NOR functionality, distinguishing it from NAND or inverter variants within the same logical family.
Replacement Considerations
The SN74AS805BNP3 is a documented substitute offering similar hex NOR functionality in a 20-pin DIP package. Verify electrical parameter compatibility and pinout alignment before substitution.
