CD74FCT244ATE Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
The CD74FCT244ATE is a BiCMOS FCT-family octal buffer and line driver with 3-state outputs in a 20-pin DIP package. It features active-low output enable control and operates at 5 V with a 50 pF load capacitance. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- CD74FCT244ATE Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5158(MOQ 100)
- 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 CD74FCT244ATE?
- Octal (8-channel) unidirectional buffer with 3-state outputs and active-low enable, ideal for bus driving and isolation
- BiCMOS FCT technology combining fast TTL-compatible switching speed with low CMOS quiescent power in a 5 V supply design
- 20-pin PDIP package with 1 V typical output low-voltage drop at 5 V, ensuring robust drive for backplane and bus loads at 50 pF
What is CD74FCT244ATE used for?
The CD74FCT244ATE is widely used as a bus buffer and line driver in microprocessor address and data bus systems, where 8 signals must be buffered and selectively placed onto a shared bus. Its 3-state outputs allow multiple drivers to share a common bus without contention by keeping non-selected buffers in high-impedance mode. It is also employed in memory interfaces, industrial control backplanes, and FPGA I/O expansion cards that operate at 5 V and require high-drive TTL-compatible outputs.
What are the specifications of CD74FCT244ATE?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | TYPICAL VOLP = 1V AT VCC = 5V,TA = 25 DEGREE C |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | FCT |
| JESD-30 Code | R-PDIP-T20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.064A |
| Number of Bits | 4 |
| Number of Functions | 8 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP20,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 0.08mA |
| Prop. Delay@Nom-Sup | 5.3ns |
| Propagation Delay (tpd) | 5.3ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.25V |
| Supply Voltage-Min (Vsup) | 4.75V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | BICMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| ## CD74FCT244ATE Alternates Showing results | Image |
| 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 |
Where can I find the CD74FCT244ATE datasheet?
CD74FCT244ATE Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74FCT244ATE?
Compatible alternatives and drop-in replacements for CD74FCT244ATE:
Frequently Asked Questions
How does the 3-state output feature of CD74FCT244ATE prevent bus contention in multi-driver systems?
When the active-low output enable pin is driven HIGH, all 8 output lines enter a high-impedance state, effectively disconnecting the buffer from the bus. Only one enabled CD74FCT244ATE drives the bus at a time, preventing simultaneous LOW and HIGH drivers from clashing. This is standard practice on 8-bit or 16-bit shared data buses in embedded systems.
Which logic family does the CD74FCT244ATE belong to and how does it compare to HCT or AHCT buffers in switching speed?
The CD74FCT244ATE belongs to the FCT (Fast CMOS TTL-compatible) BiCMOS family. FCT devices typically have propagation delays of 4 ns to 6 ns at 5 V and 50 pF load, which is faster than HCT (8 ns to 15 ns) but similar to AHCT. The BiCMOS process gives FCT parts higher output drive strength and better noise margins on 5 V backplane buses.
How many independent channels does the CD74FCT244ATE provide and how is its enable structured?
The CD74FCT244ATE has 8 independent buffer channels divided into two groups of 4, each with a separate active-low output enable pin. This allows two independent 4-bit buses to be gated separately within a single 20-pin DIP IC, reducing chip count compared to using two separate quad-buffer devices.
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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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $0.7450 | $74.50 |
| 260+ | $0.6950 | $180.70 |
| 1000+ | $0.6460 | $646.00 |
| 10000+ | $0.6156 | $6156.00 |
| 100000+ | $0.5158 | $51580.00 |
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