SN74LS38DB Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The Texas Instruments SN74LS38DB is a quad 2-input open-collector NAND gate IC from the 74LS logic family, housed in a 14-pin SSOP package. It features a maximum output low current of 48 mA and a load capacitance of 45 pF, enabling flexible wired-AND bus connections. Available RoHS-compliant from global distributors with competitive pricing and broad stock availability.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- SN74LS38DB Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Quad 2-input open-collector NAND gate from the proven 74LS family enabling wired-AND connections and interfacing to buses, LEDs, and pull-up resistor-based circuits
- High output sink current capability of up to 48 mA (I(ol) max) allowing the device to drive higher-current loads directly without additional buffer stages
- Compact 14-pin SSOP package (JESD-30 Code R-PDSO-G14) providing a smaller PCB footprint than SOIC alternatives for space-constrained designs
- RoHS and Pb-free compliant (JESD-609 Code e4) meeting modern environmental and regulatory standards for electronic manufacturing
Applications
The SN74LS38DB is commonly used in bus interface circuits, wired-AND logic implementations, and open-collector-based signal multiplexing in embedded systems and industrial control boards. Its high sink current capability makes it suitable for driving indicator LEDs, relay coils, and shared bus lines where multiple drivers must share a common signal wire. It is also found in legacy TTL logic designs and microprocessor-based systems requiring compatible 5V logic gating with open-collector outputs.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Family | LS |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 45pF |
| Logic IC Type | NAND GATE |
| Max I(ol) | 0.048A |
| Number of Functions | 4 |
| Number of Inputs | 2 |
| Output Characteristics | OPEN-COLLECTOR |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SSOP14,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, SHRINK PITCH |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 12mA |
| Prop. Delay@Nom-Sup | 32ns |
| Propagation Delay (tpd) | 32ns |
| 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 |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What type of outputs does the SN74LS38DB have?
The SN74LS38DB has open-collector outputs, allowing multiple devices to share a common output line (wired-AND configuration) and enabling direct interfacing to buses, pull-up loads, and circuits with different supply voltages.
What is the output low current rating of the SN74LS38DB?
The SN74LS38DB supports a maximum output low current (I(ol)) of 48 mA (0.048 A), which is significantly higher than standard LS logic gates, making it suitable for directly sinking current from LEDs, relay coils, and similar loads.
What package does the SN74LS38DB use and how does it compare to SOIC?
The SN74LS38DB is available in a 14-pin SSOP (Shrink Small Outline Package) with JESD-30 code R-PDSO-G14. The SSOP offers a narrower body and finer pitch than a standard SOIC, making it better suited for high-density PCB layouts.
Is the SN74LS38DB RoHS compliant?
Yes, the SN74LS38DB is RoHS and Pb-free compliant, indicated by Pbfree Code 'Yes' and JESD-609 Code e4, confirming it meets current environmental directives for lead-free electronic component manufacturing.
How does the SN74LS38DB differ from a standard 74LS00 NAND gate?
Unlike the standard 74LS00 which has totem-pole outputs, the SN74LS38DB features open-collector outputs. This allows the outputs to be wire-ORed together on a shared bus and makes it suitable for interfacing to circuits with different pull-up voltages, at the cost of needing external pull-up resistors.
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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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