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Product Detailed Parameters
- Description：IC GATE NOR 6CH 2-INP 20DIP
- Series：74AS
- Mfr：Texas Instruments
- Package：Tube,Tube
- Logic Type：NOR Gate
- Number of Circuits：6
- Number of Inputs：2
- Features：-
- Voltage - Supply：4.5V ~ 5.5V
- Current - Quiescent (Max)：-
- Current - Output High, Low：48mA, 48mA
- Input Logic Level - Low：0.8V
- Input Logic Level - High：2V
- Max Propagation Delay @ V, Max CL：4.3ns @ 5V, 50pF
- Operating Temperature：0°C ~ 70°C
- Mounting Type：Through Hole
- Supplier Device Package：20-PDIP
- Package / Case：20-DIP (0.300", 7.62mm)
- Grade：-
- Qualification：-
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Overview
The SN74AS805BN is a hex 2-input NOR driver from the AS-TTL logic family, housed in a 20-pin plastic DIP package. It operates on a 5 V supply with a commercial temperature range of 0°C to 70°C. The device features high capacitive-drive capability and draws a maximum supply current of 32 mA. It provides six independent drivers performing Boolean functions Y = A + B or Y = A • B.
Feature Summary
- Contains six independent 2-input NOR drivers
- High capacitive-drive capability for robust signal transmission
- Supports standard TTL input voltage levels
Applications
- General-purpose digital logic circuit design
- Signal buffering and line driving applications
- Boolean logic implementation in industrial control systems
Procurement Notes
Verify that the component matches the exact SN74AS805BN designation, as suffixes indicate specific package types or environmental ratings. Confirm the manufacturer is Texas Instruments and check the datasheet revision date. Ensure the operating temperature range aligns with commercial requirements (0°C to 70°C). Validate pinout compatibility before integration into existing PCB layouts.
Selection Notes
Select this component when high-speed NOR logic and strong drive capability are required within the AS-TTL family. It serves as a direct replacement for similar hex NOR gates but offers faster switching speeds compared to standard TTL variants. Consider the 20-pin DIP form factor for through-hole mounting requirements and verify power dissipation limits under heavy load conditions.
Part Context
This part belongs to the SN74AS series, representing Advanced Schottky TTL technology known for superior speed-power product characteristics. It is functionally compatible with other devices in the 74xx logic families but provides enhanced performance metrics suitable for high-frequency digital applications requiring reliable logic inversion.
Replacement Considerations
Direct substitutes include the SN74ALS805N for lower power consumption or the SN54AS805BJ for military-grade temperature ranges. Verify pin-to-pin compatibility and ensure electrical parameters meet the specific application requirements before swapping components.
