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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 SN74AS27NSR is a logic gate component from the Texas Instruments AS series, housed in a 14-pin Small Outline Package (SOP). It contains three independent 3-input positive-NOR gates. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating free-air temperature range of 0°C to 70°C. Electrical characteristics include a maximum propagation delay of 5.5 ns for low-to-high transitions and 4.5 ns for high-to-low transitions under standard test conditions.
Feature Summary
- Contains three independent 3-input positive-NOR gates
- Supports operation across a commercial temperature range of 0°C to 70°C
- Features fast switching speeds with propagation delays as low as 4.5 ns
Applications
- Boolean logic implementation using Y = A + B + C functions
- Digital signal processing circuits requiring NOR logic operations
- General-purpose logic applications in industrial control systems
Procurement Notes
Verify that the ordering suffix NSR corresponds to the SOP package and tape-and-reel packaging configuration. Confirm RoHS compliance status and lead finish specifications against current manufacturer documentation. Ensure the selected variant matches the required commercial temperature range and electrical parameters for your specific application design.
Selection Notes
Select this component when designing circuits requiring multiple independent NOR gates with fast switching capabilities. The AS series offers higher speed performance compared to standard TTL or ALS families. Consider the 14-pin SOP package constraints for PCB layout and thermal management requirements during the selection process.
Part Context
This part belongs to the Texas Instruments SN74AS27 family of logic gates. The 'SN' prefix indicates a commercial-grade device, while 'AS' denotes the Advanced Schottky logic family. The '27' identifies the specific NOR gate function, and 'NSR' specifies the surface-mount SOP package with reel packaging. This family provides enhanced speed over previous generations.
Replacement Considerations
Compatible substitutes include SN74ALS27ANSR and SN74AS27D. Verify pinout compatibility and ensure electrical parameters meet circuit requirements before substitution.
