SN74ABT126DRG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
SN74ABT126DRG4 is a 4-channel non-inverting bus buffer and line driver with 3-state outputs, operating from 4.5 V to 5.5 V supply, offering high-speed BiCMOS technology with typical output propagation delay of 2.5 ns and 64 mA output drive current, housed in a 14-pin SOIC package suitable for bus interface and level-translation applications.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- SN74ABT126DRG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74ABT126DRG4?
- 4-channel non-inverting bus buffer with 3-state outputs
- BiCMOS technology with propagation delay as low as 2.5 ns
- 64 mA output drive current for high-fanout bus applications
- Active bus-hold circuitry eliminates the need for pull-up/pull-down resistors
- Operates from 4.5 V to 5.5 V supply voltage
- Individual output-enable (OE) pin per channel for flexible bus control
- 14-pin SOIC package with tape and reel packaging
What is SN74ABT126DRG4 used for?
SN74ABT126DRG4 is widely used in data bus interface applications where multiple logic signals need buffering between processors, FPGAs, and memory devices. It is well suited for backplane drivers, address/data bus isolation in embedded systems, and level-translation between ABT and TTL logic families. Industrial control boards and communication equipment use this device to drive high-capacitance bus lines at 5 V logic levels.
What are the specifications of SN74ABT126DRG4?
| YTEOL | 15 |
| Additional Feature | TYP VOLP < 1V @ VCC = 5V, TA = 25 DEG C |
| Control Type | ENABLE HIGH |
| Count Direction | UNIDIRECTIONAL |
| Family | ABT |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.064A |
| Number of Bits | 1 |
| Number of Functions | 4 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| 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) | 30mA |
| Prop. Delay@Nom-Sup | 6.3ns |
| Propagation Delay (tpd) | 6.3ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| 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 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia |
Where can I find the SN74ABT126DRG4 datasheet?
SN74ABT126DRG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74ABT126DRG4?
Compatible alternatives and drop-in replacements for SN74ABT126DRG4:
Frequently Asked Questions
How much output current can the SN74ABT126DRG4 sink and source per channel?
The SN74ABT126DRG4 can sink up to 64 mA (IOL) and source 32 mA (IOH) per output channel, making it well suited for driving high-capacitance bus lines or multiple parallel loads in 5 V digital systems without additional buffers.
Which supply voltage range does the SN74ABT126DRG4 require, and how does it compare to LVC-family devices?
The SN74ABT126DRG4 operates from a 4.5 V to 5.5 V supply, which is typical of ABT-family logic. In contrast, LVC-family devices accept 1.65 V to 5.5 V, making LVC a better fit for mixed-voltage designs while ABT provides higher drive strength at 5 V.
Can SN74ABT126DRG4 be used to isolate an FPGA I/O bus from a legacy TTL backplane?
Yes, because each of the 4 channels features an individual active-high output-enable pin and a 3-state output, allowing selective connection and disconnection from a shared 5 V TTL backplane. The typical propagation delay of 2.5 ns keeps bus latency negligible at clock rates below 100 MHz.
What physical dimensions and pitch does the 14-pin SOIC package of SN74ABT126DRG4 use?
The 14-pin SOIC package (JEDEC MS-012) has a body width of 3.9 mm, a pin pitch of 1.27 mm, and an overall length of approximately 8.65 mm, enabling standard PCB footprints compatible with automated pick-and-place assembly in production volumes.
When should a designer choose SN74ABT126DRG4 over SN74ABT125 in a bus-control design?
SN74ABT126DRG4 uses active-high output-enable control, whereas SN74ABT125 uses active-low enables. When a controlling logic signal drives a high-true enable line, SN74ABT126DRG4 eliminates an external inverter, saving board space and reducing propagation delay by approximately 1 ns in a typical 5 V system.
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