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Product Detailed Parameters
- Description：IC GATE NAND
- 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 SN7400NS is a quadruple 2-input positive-NAND gate manufactured by Texas Instruments. It operates within a supply voltage range of 4.75 V to 5.25 V and supports an operating temperature range of 0°C to 70°C. The device features TTL-compliant inputs with a high-level input voltage (VIH) of 2 V and a low-level input voltage (VIL) of 0.8 V. Electrical characteristics include a maximum propagation delay of 22 ns at 5 V with a 15 pF load, a low-level output current of 16 mA, and a high-level output current of -0.4 mA.
Feature Summary
- Contains four independent 2-input NAND gates performing Boolean logic functions in positive logic.
- Inputs are compatible with standard TTL logic levels and can accept 3.3-V or 2.5-V logic inputs.
- Available in Plastic Small-Outline (NS) package options alongside other standard and shrink formats.
Applications
- AV Receivers
- Portable Audio Docks
- Blu-Ray Players
Procurement Notes
Verify the specific ordering suffix against the manufacturer's latest Package Option Addendum to confirm lead-free status and environmental compliance. Ensure the selected variant matches the required thermal resistance and pin configuration for the target PCB layout. Cross-reference the active status to confirm availability for new designs.
Selection Notes
Select this component when designing circuits requiring multiple independent NAND gates within a single integrated circuit. Consider the Plastic Small-Outline package dimensions for space-constrained layouts. Verify that the system power supply remains strictly within the 4.75 V to 5.25 V range to ensure reliable operation and prevent damage to the internal transistor junctions.
Part Context
This device belongs to the SNx4xx00 family of quadruple 2-input positive-NAND gates produced by Texas Instruments. The family includes variants such as SN7400, SN74LS00, and SN74S00, which differ primarily in speed and power consumption characteristics while maintaining functional compatibility.
Replacement Considerations
SN7400N
FAQ
Can the inputs of the SN7400NS accept voltages higher than 5.5 V?
No, no voltage greater than 5.5 V must be applied to the inputs. Exceeding this limit may cause the base-emitter junction at the inputs to break down.
What is the recommended bypass capacitor value for the SN7400NS?
A 0.1 µF capacitor is recommended for devices with a single supply. If there are multiple VCC pins, 0.01 µF or 0.022 µF is recommended for each power pin.
