SN74LS01DR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
SN74LS01DR is a quad 2-input NAND gate with open-collector outputs in a 14-pin SOIC package, operating from 0°C to 70°C commercial temperature range. It features four independent NAND gates with 8 mA open-collector sink current and 15 pF load capacitance rating, enabling wired-AND bus sharing and level shifting in 5 V digital logic systems.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- SN74LS01DR Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74LS01DR?
- 4 independent 2-input NAND gates with open-collector outputs
- Open-collector 8 mA maximum sink current enabling wired-AND bus connections
- 74LS family compatible with 5 V supply and TTL logic levels
- 14-pin SOIC surface-mount package for compact SMT assembly
- Commercial temperature range 0°C to 70°C for consumer and industrial use
- 15 pF rated load capacitance for predictable propagation delay estimation
- Enables level translation to higher voltages via external pull-up resistor
What is SN74LS01DR used for?
The SN74LS01DR is used in digital logic circuits requiring wired-AND bus structures where multiple open-collector outputs share a single pull-up resistor to create an implicit AND function without additional gate ICs. It serves as a level translator in mixed-voltage systems by using a pull-up resistor to a different supply voltage, for example pulling up to 3.3 V while driving from a 5 V logic source. It also finds application in interrupt-collection circuits on microcontroller boards where multiple devices share a common active-low interrupt line.
What are the specifications of SN74LS01DR?
| Pbfree Code | No |
| YTEOL | 0 |
| Family | LS |
| JESD-30 Code | R-PDSO-G14 |
| Load Capacitance (CL) | 15pF |
| Logic IC Type | NAND GATE |
| Max I(ol) | 0.008A |
| Number of Functions | 4 |
| Number of Inputs | 2 |
| Output Characteristics | OPEN-COLLECTOR |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Power Supply Current-Max (ICC) | 4.4mA |
| Prop. Delay@Nom-Sup | 32ns |
| Propagation Delay (tpd) | 32ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | NO |
| Supply Voltage-Max (Vsup) | 5.25V |
| Supply Voltage-Min (Vsup) | 4.75V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | TTL |
| Temperature Grade | COMMERCIAL |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.39.00.60 |
Where can I find the SN74LS01DR datasheet?
SN74LS01DR Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74LS01DR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the open-collector output of SN74LS01DR enable wired-AND bus implementations?
Open-collector outputs can be tied together with a single external pull-up resistor to VCC, typically 1 kΩ to 4.7 kΩ at 5 V. When any SN74LS01DR output pulls the shared node low with up to 8 mA sink current, the bus reads logic low, implementing a wired-AND over up to 10 paralleled outputs without additional logic gates.
For a mixed-voltage system, how can SN74LS01DR perform 5 V to 3.3 V level translation?
Because open-collector outputs do not actively drive the output high, an external pull-up resistor to the target supply of 3.3 V can be used instead of the 5 V VCC. The SN74LS01DR input still accepts standard TTL 5 V logic, but its output swings between 0 V and 3.3 V, providing a simple single-component level translation from 5 V driving to 3.3 V receiving circuits.
What is the maximum output sink current of SN74LS01DR and how many loads can it drive?
The maximum open-collector sink current I(OL) is 8 mA, which is sufficient to pull down the gate of a small signal N-MOSFET or drive an LED through a 390 Ω series resistor at 5 V. Up to 10 standard TTL inputs of 0.8 mA each can be driven simultaneously, allowing fan-out of 10 LS-TTL gate inputs within the 8 mA limit.
Why would a designer choose SN74LS01DR over a standard totem-pole NAND gate for a shared-bus design?
Standard totem-pole NAND gates cannot be paralleled because two outputs fighting for opposite logic states create shoot-through currents exceeding 50 mA that damage the devices. Open-collector gates like SN74LS01DR safely share a bus through a common pull-up resistor, making them the correct choice for I2C clock lines, interrupt buses, and any multi-master shared logic node.
What supply voltage and temperature range does SN74LS01DR support for industrial use?
SN74LS01DR operates from a 4.75 V to 5.25 V supply and is specified for a commercial temperature range of 0°C to 70°C. For industrial applications requiring -40°C to +85°C operation, the SN74LS01 variant in a different suffix or the 74HC01 CMOS equivalent with wider temperature tolerance should be selected instead.
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About Texas Instruments
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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