SN74LS26DRG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
SN74LS26DRG4 is a quad 2-input NAND gate with open-collector outputs in a 14-pin SOIC package, featuring LS-TTL logic levels, 8 mA sink current, and 15 pF load capacitance for wired-AND bus applications.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- SN74LS26DRG4 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 SN74LS26DRG4?
- Quad 2-input NAND topology with 4 independent gate elements
- Open-collector outputs sink up to 8 mA enabling wired-AND configurations
- LS-TTL family compatibility at 5 V supply for broad legacy system integration
- 14-pin SOIC package with tape-and-reel (DRG4) for automated PCB assembly
- 15 pF load capacitance spec supports reliable switching at standard LS speeds
- JESD-609 e4 classification for RoHS-compliant halogen-free assembly
What is SN74LS26DRG4 used for?
The SN74LS26DRG4 is widely used in digital control circuits where wired-AND logic consolidation is needed, such as interrupt request lines, bus arbitration, and level-translation interfaces in industrial PLCs and communication equipment. Its open-collector outputs allow multiple devices to share a single pull-up resistor on a common bus, reducing component count in backplane and multi-master designs. Legacy 5 V TTL systems in test and measurement instruments also rely on the LS26 for reliable NAND gating with standard LS-series drive capability.
What are the specifications of SN74LS26DRG4?
| YTEOL | 0 |
| Family | LS |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| 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) | 260 |
| Power Supply Current-Max (ICC) | 4.4mA |
| Prop. Delay@Nom-Sup | 32ns |
| Propagation Delay (tpd) | 28ns |
| 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 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 |
Where can I find the SN74LS26DRG4 datasheet?
SN74LS26DRG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74LS26DRG4?
Compatible alternatives and drop-in replacements for SN74LS26DRG4:
Frequently Asked Questions
How much current can the SN74LS26DRG4 open-collector outputs sink, and what external pull-up is required?
The SN74LS26DRG4 open-collector outputs can sink up to 8 mA, so a pull-up resistor connected to 5 V (or lower bus voltage) must be sized to limit current below that threshold; a typical value of 1 kΩ to 4.7 kΩ suits most LS-TTL fanout scenarios.
In what wired-AND applications is the SN74LS26DRG4 most commonly used?
The SN74LS26DRG4 is commonly used to implement shared interrupt request lines, bus arbitration logic, and multi-master control buses where multiple open-collector outputs tie to a single pull-up resistor, allowing any asserted output to pull the line low across 4 gate channels simultaneously.
Is the SN74LS26DRG4 compatible with modern 3.3 V logic, or does it require a 5 V rail?
The SN74LS26DRG4 is an LS-TTL part requiring a 5 V supply with input thresholds of approximately 0.8 V low and 2.0 V high; driving it from a 3.3 V output may not meet the VIH requirement of 2.0 V, so a logic-level translator or 5 V-tolerant buffer is recommended for mixed-voltage boards.
What is the load capacitance rating of the SN74LS26DRG4, and how does it affect switching speed?
The SN74LS26DRG4 is specified with a 15 pF load capacitance; exceeding this value increases propagation delay beyond the datasheet typical of about 22 ns, so PCB trace lengths and fanout should be kept short to maintain signal integrity in high-speed control buses.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
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.
More from Texas Instruments
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit