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Product Detailed Parameters
- Description：IC HEX INVERTER
- 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 SN7405NE4 is a hex inverter with open-collector outputs manufactured by Texas Instruments. It belongs to the standard 7400 logic series and operates within a supply voltage range of 4.75 V to 5.25 V. The device features six independent inverters housed in a 14-pin PDIP package. Electrical characteristics include a maximum low-level output current of 16 mA and a typical propagation delay of 55 ns at 5 V. It supports an operating temperature range from 0°C to +70°C.
Feature Summary
- Contains six independent inverting channels for signal inversion
- Features open-collector outputs requiring external pull-up resistors
- Supports active-low wired-OR or active-high wire-AND logic functions
Applications
- Implementing active-low wired-OR logic configurations
- Generating high VOH levels via external pull-ups
- Connecting to other open-collector outputs for bus interfacing
Procurement Notes
Verify that the ordering suffix 'E4' corresponds to the specific lead finish and RoHS compliance status required for your assembly process. Confirm the package type matches the PCB footprint design, as this part number specifies the N (PDIP) variant. Ensure the selected component meets the environmental specifications for the intended operating temperature range.
Selection Notes
Select this component when six independent inverters with open-collector outputs are required. It is suitable for applications needing wired-logic capabilities or interface driving where external pull-up resistors can be utilized. Verify that the 16 mA sink capability and 55 ns propagation delay meet the system timing requirements.
Part Context
This device is part of the SNx405 family of hex inverters with open-collector outputs. It shares functional similarities with the SN74LS05 and SN74S05 but differs in electrical characteristics such as power consumption and switching speed. The SN7405 represents the standard TTL logic level implementation within this product line.
Replacement Considerations
SN74LS05NE4
FAQ
Why are external components necessary for this device?
The open-collector outputs require external pull-up resistors to perform correctly and establish a high logic state.
Can multiple outputs be connected together?
Yes, these devices may be connected to other open-collector outputs to implement active-low wired-OR or active-high wire-AND functions.
