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Product Detailed Parameters
- Description：IC GATE NAND 4CH 2-INP 14SO
- Series：74F
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- Logic Type：NAND Gate
- Number of Circuits：4
- Number of Inputs：2
- Features：Open Collector
- Voltage - Supply：4.5V ~ 5.5V
- Current - Quiescent (Max)：-
- Current - Output High, Low：-, 64mA
- Input Logic Level - Low：0.8V
- Input Logic Level - High：2V
- Max Propagation Delay @ V, Max CL：12.5ns @ 5V, 50pF
- Operating Temperature：0°C ~ 70°C
- Mounting Type：Surface Mount
- Supplier Device Package：14-SO
- Package / Case：14-SOIC (0.209", 5.30mm Width)
- Grade：-
- Qualification：-
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Overview
The SN74F38NSRE4 is a quad 2-input NAND buffer gate with open-collector outputs, manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and an operating temperature range of 0°C to 70°C. The device features a low-level output current capability of 64 mA at VCC = 4.5 V. Propagation delays are specified as 1 ns minimum to 6.5 ns maximum for low-to-high transitions and 1 ns minimum to 5.5 ns maximum for high-to-low transitions under standard test conditions.
Feature Summary
- Contains four independent 2-input NAND buffer gates with open-collector outputs
- Outputs require external pullup resistors to perform correctly
- Capable of implementing active-low wired-OR or active-high wired-AND functions when connected to other open-collector outputs
Applications
- Generating higher VOH levels
- Implementing wired logic functions in digital circuits
- General-purpose logic buffering applications
Procurement Notes
Verify the specific ordering suffix 'E4' against the manufacturer's latest documentation to confirm compliance status and material specifications. Ensure the selected package variant matches the required PCB footprint and thermal management needs for the target application environment.
Selection Notes
Select this component when open-collector NAND functionality is required for wired logic configurations. Consider the 64 mA low-level sink capability for driving loads directly. Verify that external pullup resistors are included in the design to ensure proper high-state output voltage levels.
Part Context
This part belongs to the SN74F38 series of logic gates produced by Texas Instruments. The 'NS' designation indicates a Small Outline Package (SOP) with 14 pins. The 'R' suffix denotes tape and reel packaging, while 'E4' typically signifies lead-free and RoHS-compliant materials according to industry standards.
Replacement Considerations
SN74F38DRG4
FAQ
Why are external pullup resistors required for the SN74F38NSRE4?
The device features open-collector outputs which cannot actively drive the output high. External pullup resistors are necessary to establish the high logic level.
What Boolean function does the SN74F38NSRE4 perform?
It performs the NAND function, represented as Y = A · B or Y = A + B in positive logic notation.
