CD74HC40105E Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
The CD74HC40105E is a Texas Instruments high-speed CMOS 4-bit by 16-word FIFO register with 64-bit memory density in a 16-pin PDIP package. It supports a maximum clock frequency of 10 MHz with 2250 ns access time and 500 ns cycle time. Available in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- CD74HC40105E 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
Key Features
- 4-bit wide by 16-word deep (64-bit total) FIFO register with first-in first-out data queuing, ideal for rate-matching and buffering between asynchronous digital subsystems
- Maximum clock frequency of 10 MHz with 500 ns cycle time and 2250 ns access time, providing adequate speed for standard digital data buffering in HC CMOS logic systems
- RoHS-compliant (Pb-free) 16-pin PDIP (R-PDIP-T16) through-hole package with 15-year estimated end-of-life, making it easy to prototype and ensuring long-term supply availability
Applications
The CD74HC40105E is used for rate-matching and data buffering between subsystems operating at different speeds, such as between a fast processor bus and a slower peripheral interface. It is commonly found in legacy and retro digital designs, embedded control systems, and educational electronics projects where through-hole PDIP components are preferred. Its FIFO structure ensures data ordering integrity, making it suitable for serial data queuing and handshaking circuits in multi-rate digital communication designs.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Access Time-Max | 2250ns |
| Clock Frequency-Max (fCLK) | 10MHz |
| Cycle Time | 500ns |
| JESD-30 Code | R-PDIP-T16 |
| JESD-609 Code | e4 |
| Memory Density | 64bit |
| Memory IC Type | OTHER FIFO |
| Memory Width | 4 |
| Number of Functions | 1 |
| Number of Words | 16words |
| Number of Words Code | 16 |
| Operating Mode | SYNCHRONOUS |
| Organization | 16X4 |
| Output Characteristics | 3-STATE |
| Output Enable | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Parallel/Serial | PARALLEL |
| 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
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the memory organization of the CD74HC40105E?
The CD74HC40105E is organized as a 4-bit wide by 16-word deep FIFO register, providing a total storage capacity of 64 bits. Data is stored and retrieved in first-in first-out order, making it suitable for buffering 4-bit parallel data between subsystems operating at different speeds.
What are the timing specifications of the CD74HC40105E?
The CD74HC40105E supports a maximum clock frequency of 10 MHz, with a cycle time of 500 ns and a maximum access time of 2250 ns. These specifications define the read and write throughput of the FIFO and must be observed to ensure correct data transfer in the target system.
What package does the CD74HC40105E use?
The CD74HC40105E is housed in a 16-pin R-PDIP-T16 through-hole DIP (Dual In-Line Package). This classic through-hole package is easy to hand-solder, breadboard-compatible, and well suited for prototyping, education, and legacy embedded system designs.
Is the CD74HC40105E still in production?
Yes, the CD74HC40105E carries a 15-year estimated end-of-life (YTEOL) designation and is RoHS-compliant with Pb-free construction (JESD-609 e4). This indicates active production with strong long-term availability, making it a reliable choice for new designs that require a simple hardware FIFO buffer.
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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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