SN74HC05NSRG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments SN74HC05NSRG4 is a hex inverter with open-drain outputs from the HC/UH logic family, integrating 6 independent single-input inverter gates in a 14-pin SOP package. It operates with a 50 pF load capacitance rating and a maximum open-drain sink current of 4 mA per output, suitable for level translation and bus driving. Available from authorized distributors with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- SN74HC05NSRG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 6-channel open-drain inverter outputs enable wired-AND logic configurations and voltage level translation without additional discrete components
- HC/UH family logic operates from 2 V to 6 V supply, providing wide compatibility across mixed 3.3 V and 5 V logic systems
- Open-drain topology allows outputs to be pulled up to any voltage up to the breakdown limit, supporting I2C-style bus sharing and interrupt aggregation
- 14-pin SOP (Small Outline Package) with 50 pF output load rating balances integration density with ease of hand soldering and inspection
Applications
The SN74HC05NSRG4 is used in digital logic designs requiring open-drain signal inversion, such as I2C bus buffers, interrupt line aggregators, and level shifters between 3.3 V microcontrollers and 5 V peripherals. Its 6-channel integration allows a single IC to handle multiple independent logic inversion tasks on a PCB, reducing component count in CPLD and FPGA interface boards. It is also employed in bus-structured architectures where wired-AND signaling across multiple devices requires open-drain pull-down capability on shared signal lines.
Specifications
| YTEOL | 0 |
| Family | HC/UH |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | INVERTER |
| Max I(ol) | 0.004A |
| Number of Functions | 6 |
| Number of Inputs | 1 |
| Output Characteristics | OPEN-DRAIN |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP14,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 50mA |
| Prop. Delay@Nom-Sup | 29ns |
| Propagation Delay (tpd) | 145ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | NO |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74HC05NSRG4:
Frequently Asked Questions
How does the open-drain output of the SN74HC05NSRG4 differ from a standard push-pull inverter output?
The open-drain outputs of the SN74HC05NSRG4 can only actively pull the output low (to ground); they rely on an external pull-up resistor to pull the output high. In contrast, a push-pull inverter drives both high and low states actively. This open-drain topology allows outputs from multiple devices to be wire-ANDed on a shared bus — when any device pulls low, the bus reads low — which is essential for I2C, SMBus, and interrupt-aggregation circuits. Pull-up resistors in the range of 1 kΩ to 10 kΩ are typically used.
What supply voltage range is supported by the SN74HC05NSRG4, and how does this enable level translation?
The SN74HC05NSRG4 HC-family logic operates from a supply voltage (VCC) of 2 V to 6 V, accepting standard 3.3 V and 5 V rails. Because the open-drain outputs can be pulled up to a voltage independent of VCC — up to the device's breakdown voltage — a 3.3 V-powered SN74HC05 can drive open-drain outputs pulled up to 5 V, effectively translating logic levels from a 3.3 V domain to a 5 V domain with no additional circuitry.
What is the maximum sink current per channel for the SN74HC05NSRG4, and how does this affect pull-up resistor selection?
Each open-drain output of the SN74HC05NSRG4 can sink a maximum of 4 mA (I_OL max). When selecting a pull-up resistor, the resistor value must be low enough to pull the line high within the required timing (e.g., a 4.7 kΩ pull-up at 3.3 V gives approximately 0.7 mA pull-up current), but high enough so that when the output pulls low, the sink current does not exceed 4 mA. For a 5 V rail, a minimum pull-up of approximately 1.25 kΩ keeps sink current at or below the 4 mA maximum.
In what logic bus architectures is the SN74HC05NSRG4 commonly used alongside microcontrollers?
The SN74HC05NSRG4 is commonly used alongside ARM Cortex-M microcontrollers and FPGA I/O banks in I2C bus extension circuits, where its open-drain outputs contribute to the wired-AND bus without disrupting other devices on the same data line. It is also used in interrupt controller front-ends, where multiple peripheral interrupt signals are inverted and combined on a single open-drain wire, and in enable-signal inversion chains for multi-device SPI or JTAG debug buses running at 3.3 V or 5 V.
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Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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