CD54HCT126F3A Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
The CD54HCT126F3A is a military-grade quad bus buffer with 4 independent active-high tri-state enables from the HCT CMOS logic family. It operates from 4.5V to 5.5V supply and accepts TTL-compatible inputs in a 14-pin ceramic DIP package. From stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- CD54HCT126F3A Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of CD54HCT126F3A?
- Four independent active-high output enables provide flexible tri-state bus control for multi-master bus architectures
- HCT logic family accepts 5V TTL-compatible input levels with CMOS output drive for easy TTL-to-CMOS interfacing
- Military-grade ceramic 14-pin DIP package ensures high reliability in harsh environments with extended temperature range
- 6 mA output sink current with 50 pF load drive capability for standard logic bus interfacing
What is CD54HCT126F3A used for?
The CD54HCT126F3A is used in military and high-reliability avionics, industrial control, and space electronics applications where bus buffering with tri-state control is required in harsh environments. It is well-suited for data bus isolation, bidirectional bus segmentation, and I/O expansion in systems requiring TTL-to-CMOS level translation with independent enable control. The ceramic DIP package and military-grade qualification make it ideal for defense, aerospace, and ruggedized industrial systems.
What are the specifications of CD54HCT126F3A?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Control Type | ENABLE HIGH |
| Count Direction | UNIDIRECTIONAL |
| Family | HCT |
| JESD-30 Code | R-GDIP-T14 |
| JESD-609 Code | e0 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.006A |
| Number of Bits | 1 |
| Number of Functions | 4 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | CERAMIC, GLASS-SEALED |
| Package Equivalence Code | DIP14,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 0.08mA |
| Prop. Delay@Nom-Sup | 36ns |
| Propagation Delay (tpd) | 36ns |
| Qualification Status | Not Qualified |
| Screening Level | 38535Q/M;38534H;883B |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Ceramic Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Where can I find the CD54HCT126F3A datasheet?
CD54HCT126F3A Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD54HCT126F3A?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the CD54HCT126F3A and what does it do?
The CD54HCT126F3A is a quad single-input bus buffer with active-high tri-state output enables from the HCT CMOS logic family. It accepts TTL input levels and operates from 4.5V to 5.5V, providing four independently controllable buffered outputs for bus interfacing applications.
What makes the CD54HCT126F3A suitable for military applications?
The CD54HCT126F3A is manufactured in a ceramic dual-in-line package (CDIP) that provides superior moisture resistance, thermal stability, and mechanical robustness compared to plastic packages, meeting military reliability standards for operation across extreme temperature and humidity conditions.
What package and pin count does the CD54HCT126F3A use?
The CD54HCT126F3A uses a 14-pin ceramic dual-in-line package (CDIP), identified by JESD-30 code R-GDIP-T14. This through-hole package is standard for military and high-reliability applications requiring robust mechanical connections.
How does the tri-state enable work on the CD54HCT126F3A?
Each of the four buffer channels on the CD54HCT126F3A has an independent active-high output enable pin. When the enable pin is driven high, the output follows the input; when low, the output enters high-impedance (tri-state) mode, allowing bus sharing among multiple devices.
What logic family is the CD54HCT126F3A and what supply voltage does it require?
The CD54HCT126F3A belongs to the HCT (High-Speed CMOS with TTL-compatible inputs) logic family. It operates from a supply voltage of 4.5V to 5.5V, accepting TTL-level inputs and producing CMOS-level outputs compatible with standard 5V digital systems.
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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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