CD74HC126E Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
CD74HC126E is a high-speed CMOS quad bus buffer with 3-state outputs and active-high enable control. Features 6mA output drive, 50pF load capacitance, and PDIP-14 packaging. From $0.42 in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- CD74HC126E Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4222(MOQ 1)
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Quad 3-state bus buffer with active-high enable control for flexible bus management
- High-speed CMOS HC/UH family with 50pF load capacitance and 6mA output drive current
- PDIP-14 package for easy through-hole prototyping and breadboard use
- Pb-free (RoHS compliant) with 15-year YTEOL for long-term supply assurance
- Unidirectional signal flow simplifies system-level bus architecture design
Applications
The CD74HC126E is widely used in digital systems for bus isolation and signal buffering, enabling multiple devices to share a common data bus without contention. It is ideal for microcontroller I/O expansion, memory interface buffering, and logic-level signal switching in industrial control, computing, and consumer electronics applications. Its 3-state outputs make it a natural fit for bidirectional bus architectures where tri-state control is essential.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Control Type | ENABLE HIGH |
| Count Direction | UNIDIRECTIONAL |
| Family | HC/UH |
| JESD-30 Code | R-PDIP-T14 |
| JESD-609 Code | e4 |
| 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 | PLASTIC/EPOXY |
| Package Equivalence Code | DIP14,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 0.16mA |
| Prop. Delay@Nom-Sup | 30ns |
| Propagation Delay (tpd) | 150ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 4.5V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia, Mexico |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for CD74HC126E:
Frequently Asked Questions
What is the output drive current of the CD74HC126E?
The CD74HC126E provides a maximum output low current (I(ol)) of 6mA, making it suitable for driving standard CMOS and TTL-compatible loads on shared data buses. This is consistent with the HC/UH logic family specifications.
How does the enable control work on the CD74HC126E?
The CD74HC126E uses active-high enable control. When the enable pin is driven high, the buffer output is active and drives the bus. When the enable pin is low, the output enters a high-impedance (3-state) condition, effectively disconnecting the buffer from the bus to prevent contention.
What package does the CD74HC126E come in, and is it RoHS compliant?
The CD74HC126E is available in a 14-pin Dual-In-Line (PDIP-14) through-hole package, which is convenient for prototyping and hand-soldering. It is Pb-free and RoHS compliant (JESD-609 Code: e4), with a 15-year end-of-life assurance (YTEOL: 15).
What are typical applications for the CD74HC126E?
Typical applications include bus buffering and isolation in microcontroller systems, memory interface expansion, I/O direction control, and logic-level signal switching in industrial, computing, and embedded electronics designs where tri-state bus management is required.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.6500 | $0.65 |
| 10+ | $0.4990 | $4.99 |
| 25+ | $0.4980 | $12.45 |
| 1000+ | $0.4508 | $450.79 |
| 2500+ | $0.4329 | $1082.30 |
| 5000+ | $0.4222 | $2110.75 |
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