CY74FCT2245ATQCTG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
CY74FCT2245ATQCTG4 is an 8-bit bidirectional bus transceiver in the FCT logic family, featuring TTL-compatible non-inverting inputs and outputs in a 20-pin SSOP package with 50 pF load capacitance drive capability. It supports high-speed data transfer between two buses with tri-state outputs and direction control, operating from a 5 V supply. Available in stock with global shipping for industrial and computing bus interface applications.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- CY74FCT2245ATQCTG4 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 CY74FCT2245ATQCTG4?
- 8-bit bidirectional bus transceiver with common direction and output-enable controls
- FCT-family 5 V TTL-compatible logic with IOL up to 12 mA sink current capability
- Tri-state outputs prevent bus contention in shared backplane and bus arbitration designs
- 50 pF load capacitance drive rating for long PCB traces and capacitive bus lines
- 20-pin SSOP package with fine 0.635 mm pitch for compact high-density PCB designs
What is CY74FCT2245ATQCTG4 used for?
CY74FCT2245ATQCTG4 is used in industrial computers, VME and PCI bus systems, and embedded processor boards where bidirectional 8-bit data bus buffering between processor and peripheral logic is required. Its FCT speed and drive strength are also suitable for memory expansion boards and backplane interconnect in harsh-environment systems operating at 5 V.
What are the specifications of CY74FCT2245ATQCTG4?
| YTEOL | 0 |
| Control Type | COMMON CONTROL |
| Count Direction | BIDIRECTIONAL |
| Family | FCT |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS TRANSCEIVER |
| Max I(ol) | 0.012A |
| Number of Bits | 8 |
| Number of Functions | 1 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE WITH SERIES RESISTOR |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SSOP20,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, SHRINK PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.2mA |
| Prop. Delay@Nom-Sup | 4.6ns |
| Propagation Delay (tpd) | 4.6ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.25V |
| Supply Voltage-Min (Vsup) | 4.75V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.635mm |
| 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 2 |
| HTS Code | 8542.39.00.60 |
Where can I find the CY74FCT2245ATQCTG4 datasheet?
CY74FCT2245ATQCTG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CY74FCT2245ATQCTG4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does CY74FCT2245ATQCTG4 handle data direction switching between the A-bus and B-bus?
Direction is controlled by a single DIR pin; when DIR is high, data flows from A to B, and when DIR is low, data flows from B to A, with a separate OE pin tri-stating all 8 outputs to prevent bus conflict during the switching interval.
Can CY74FCT2245ATQCTG4 drive 50 pF bus lines at full FCT speed, and what does that mean in practice?
Yes. The FCT family is specified with 50 pF load capacitance, delivering typical propagation delays under 5 ns at 5 V supply, which sustains data rates above 100 MHz on board-level buses such as ISA, PC-104, or VME backplanes.
Which supply voltage does CY74FCT2245ATQCTG4 require, and is it compatible with 3.3 V logic I/O?
The CY74FCT2245ATQCTG4 is a 5 V device; its TTL-compatible input thresholds (VIH = 2 V, VIL = 0.8 V) accept 5 V logic levels, but 3.3 V logic drivers may not reliably assert high without a level translator in series.
What lifecycle and availability considerations apply when sourcing CY74FCT2245ATQCTG4 for long-term industrial designs?
The YTEOL metric for this part is 0, indicating potential end-of-life risk; procurement teams designing for 10-plus year deployments should evaluate last-time-buy quantities or qualify a second-source 8-bit transceiver such as 74FCT245 from another manufacturer to avoid obsolescence.
Related Guides
STM32H725IGT3 Selection Guide: Memory, Package, Temperature, and Supply
Choose the right STM32H725 variant by comparing Flash, package, pin count, temperature grade, connectivity, and production requirements.
Aug 1, 2026
STM32H725IGT3 High-Performance MCU Design Guide
Design STM32H725IGT3 systems for reliable 550 MHz operation with practical power, clock, cache, DMA, PCB, ADC, and recovery guidance.
Jul 31, 2026
150141VS73100 Violet SMD LED Selection Guide: Color, Drive, and Sourcing
Select the 150141VS73100 by wavelength, brightness, drive current, 3528 fit, reliability, and traceable sourcing requirements.
Jul 31, 2026
STEF05SGR 5 V eFuse Protection Design Guide
Design a reliable 5 V STEF05SGR eFuse stage with current-limit math, capacitor sizing, thermal analysis, fault recovery, and PCB layout guidance.
Jul 30, 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
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”
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