SN74ALS03BDG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
SN74ALS03BDG4 is a quad 2-input NAND gate from Texas Instruments in the ALS family with open-collector outputs, SOIC-14 package, and 8 mA output sink current. Designed for bus-driving and wired-AND logic applications in 5 V TTL systems. Available from stock worldwide with competitive pricing.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- SN74ALS03BDG4 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 SN74ALS03BDG4?
- Quad 2-input NAND gate with open-collector outputs for wired-AND configurations
- ALS (Advanced Low-Power Schottky) family with fast propagation delay and low power
- 8 mA output sink current suitable for LED or relay driving
- 50 pF load capacitance rating supports standard TTL fanout requirements
- SOIC-14 package provides compact board footprint for logic glue circuits
- 5 V TTL-compatible inputs and outputs for legacy system integration
What is SN74ALS03BDG4 used for?
The SN74ALS03BDG4 is used in digital logic systems requiring flexible wired-AND bus structures, such as interrupt request lines on legacy microprocessor boards and multi-master I2C-compatible bus arbitration circuits. Its open-collector outputs are particularly valuable in systems where several gates must share a common output line and drive a shared load through a pull-up resistor. It also serves in general-purpose glue logic for NAND-based combinational functions in industrial control and communication equipment.
What are the specifications of SN74ALS03BDG4?
| YTEOL | 0 |
| Family | ALS |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| 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 | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 4mA |
| Prop. Delay@Nom-Sup | 50ns |
| Propagation Delay (tpd) | 50ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | NO |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | TTL |
| Temperature Grade | COMMERCIAL |
| 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 |
| Country of Origin | Malaysia |
Where can I find the SN74ALS03BDG4 datasheet?
SN74ALS03BDG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74ALS03BDG4?
Compatible alternatives and drop-in replacements for SN74ALS03BDG4:
Frequently Asked Questions
Why are the open-collector outputs of SN74ALS03BDG4 preferred for shared-bus or wired-AND signal lines?
Open-collector outputs allow multiple SN74ALS03BDG4 gates to connect their outputs together to a common pull-up resistor, typically 1 kΩ to 10 kΩ to 5 V, creating a wired-AND configuration. The bus line goes low if any gate pulls it low, and returns high only when all gates release it. This is essential for interrupt request lines, I2C-style bus arbitration, and other applications where multiple drivers must share a single wire without contention.
How does the ALS logic family of SN74ALS03BDG4 compare to standard TTL in terms of speed and power consumption?
The ALS (Advanced Low-Power Schottky) family offers a significant improvement over standard TTL: propagation delays are typically around 4 ns to 7 ns compared to 10-15 ns for standard 74XX, while supply current is roughly 3× to 5× lower. For a quad NAND gate like SN74ALS03BDG4, this translates to faster edge rates with lower ICC, making ALS the preferred choice when upgrading older 5 V TTL boards to conserve power without redesigning to CMOS.
Can SN74ALS03BDG4 sink enough current to directly drive an indicator LED without an additional transistor?
Yes—the SN74ALS03BDG4 open-collector output can sink up to 8 mA, which is sufficient to drive a standard indicator LED (typically 2 mA to 5 mA forward current) when the LED and a current-limiting resistor are connected between the supply and the output pin. No additional transistor is required for standard 2 mA LEDs; simply select a resistor sized to limit current below the 8 mA maximum rated sink capacity of the output.
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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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