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CY74FCT245CTQCT
Texas Instruments
IC TXRX NON-INVERT 5.25V 20SSOP
3891 Pcs New Original In Stock
Transceiver, Non-Inverting 1 Element 8 Bit per Element 3-State Output 20-SSOP
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5.0 / 5.0
- (423 Ratings)
CY74FCT245CTQCT
Product Overview
1242932
DiGi Electronics Part Number
CY74FCT245CTQCT-DGManufacturer
Texas Instruments
CY74FCT245CTQCT
Description
IC TXRX NON-INVERT 5.25V 20SSOPInventory
3891 Pcs New Original In Stock
Transceiver, Non-Inverting 1 Element 8 Bit per Element 3-State Output 20-SSOP
CAD Models - PCB Symbols & Footprints
Quantity
Minimum 1
Minimum 1
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CY74FCT245CTQCT Technical Specifications
Category
Logic, Buffers, Drivers, Receivers, Transceivers
Packaging
Tape & Reel (TR)
Series
74FCT
Product Status
Active
Logic Type
Transceiver, Non-Inverting
Number of Elements
1
Number of Bits per Element
8
Input Type
-
Output Type
3-State
Current - Output High, Low
32mA, 64mA
Voltage - Supply
4.75V ~ 5.25V
Operating Temperature
-40°C ~ 85°C (TA)
Mounting Type
Surface Mount
Package / Case
20-SSOP (0.154", 3.90mm Width)
Supplier Device Package
20-SSOP
Base Product Number
74FCT245
Datasheet & Documents
HTML Datasheet
CY74FCT245CTQCT-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
2 (1 Year)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
296-23214-6
296-23214-2
CY74FCT245CTQCTG4-DG
-296-23214-1-NDR
296-23214-1
CY74FCT245CTQCTE4-DG
296-23214-2-NDR
CY74FCT245CTQCT-DG
-CY74FCT245CTQCTG4
CY74FCT245CTQCTG4
-CY74FCT245CTQCTE4
TEXTISCY74FCT245CTQCT
-CY74FCT245CTQCT-NDR
CY74FCT245CTQCTE4
2156-CY74FCT245CTQCT
296-23214-6-NDR
-CY74FCT245CTQCTE4-NDR
-296-23214-1-DG
296-23214-1-NDR
-CY74FCT245CTQCTG4-NDR
Standard Package
2,500
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
The buying process is straightforward, and staff are very professional.
Dec 02, 2025
The affordability of their products is a key factor in my positive experience with them.
Dec 02, 2025
DiGi Electronics processed my urgent order swiftly and efficiently, great service!
Dec 02, 2025
Whenever I contact their support team, I receive clear and detailed assistance within a short time.
Dec 02, 2025
Support staff patiently explained warranty policies, making me feel secure about my purchase.
Dec 02, 2025
Their post-purchase assistance is prompt and very helpful, fostering strong customer trust.
Dec 02, 2025
I appreciate the quick delivery, it showed high efficiency and professionalism.
Dec 02, 2025
We appreciate their proactive communication and commitment to quality service.
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Frequently Asked Questions (FAQ)
What are the key reliability and thermal risks when using the CY74FCT245CTQCT in high-density PCB designs with limited airflow, and how can I mitigate them?
The CY74FCT245CTQCT, while rated for -40°C to 85°C ambient operation, can experience localized heating in tightly packed layouts due to its 32mA/64mA output drive capability—especially when driving capacitive loads or multiple downstream devices simultaneously. In high-density designs with restricted airflow, junction temperatures may exceed safe limits, accelerating electromigration and reducing long-term reliability. To mitigate this, ensure adequate copper pour under the 20-SSOP package for thermal dissipation, avoid routing high-frequency signals beneath the device, and consider derating output current by 20% in continuous high-load scenarios. Thermal vias connected to an internal ground plane beneath the package can significantly improve heat transfer and prevent premature failure.
Can the CY74FCT245CTQCT safely replace a 74LVC245 in a 3.3V system, and what design changes are required to avoid signal integrity or timing issues?
The CY74FCT245CTQCT is not a direct drop-in replacement for the 74LVC245 in 3.3V systems due to its 4.75V–5.25V supply requirement and higher input threshold voltages (typically ~2.0V VIH). Attempting to interface it with 3.3V logic without level shifting risks marginal logic recognition, increased propagation delay skew, and potential damage if 3.3V signals are applied to inputs while VCC is absent. If replacement is necessary, use a bidirectional level shifter (e.g., TXB0108) between the 3.3V controller and the CY74FCT245CTQCT, or redesign the power rail to support 5V operation. Always verify timing margins, as the FCT family’s faster edge rates may cause reflections on unterminated lines in legacy 3.3V PCB traces.
How does the output drive strength of the CY74FCT245CTQCT compare to the SN74ALVC245, and in what applications might one be preferred over the other despite voltage compatibility?
While both the CY74FCT245CTQCT and SN74ALVC245 support 5V operation, the FCT version offers significantly higher output drive (32mA high, 64mA low) compared to the ALVC’s typical 24mA in both states. This makes the CY74FCT245CTQCT better suited for driving heavier capacitive loads, such as long backplanes or multiple IC inputs, where stronger drive reduces rise/fall times and improves noise margin. However, the ALVC family has lower propagation delay (typically ~3.5ns vs. ~5.5ns for FCT) and better performance at 3.3V, making it preferable in high-speed, low-voltage systems. Choose the CY74FCT245CTQCT when signal integrity under load is critical; opt for ALVC when speed and voltage scalability dominate the design constraints.
What are the risks of using the CY74FCT245CTQCT in battery-powered industrial equipment, and how does its quiescent current compare to low-power alternatives like the 74AUC245?
The CY74FCT245CTQCT has relatively high quiescent current (typically 40µA, but can spike during switching) compared to ultra-low-power alternatives like the 74AUC245 (typically <1µA). In battery-powered industrial equipment—especially those in sleep or idle modes for extended periods—this can lead to unnecessary power drain and reduced operational lifespan. Additionally, the FCT family’s faster switching edges increase dynamic power consumption under load. If low standby current is critical, consider replacing the CY74FCT245CTQCT with a 74AUC245 or similar, provided your system can tolerate its lower voltage range (0.8V–2.7V) and reduced drive strength. If 5V logic is mandatory, implement power gating using a load switch to disable VCC to the transceiver during inactive periods, significantly extending battery life.
When integrating the CY74FCT245CTQCT into a mixed-voltage system with 5V FPGAs and 3.3V microcontrollers, what protection and level-shifting strategies are essential to prevent latch-up or I/O damage?
Integrating the CY74FCT245CTQCT between 5V FPGAs and 3.3V microcontrollers requires careful I/O voltage management to prevent latch-up or oxide stress. Although the CY74FCT245CTQCT tolerates 5.25V on its supply and I/O pins, applying 5V signals directly to a 3.3V microcontroller input—even through the transceiver’s 3-state outputs—can exceed the microcontroller’s absolute maximum ratings. Use the CY74FCT245CTQCT as a 5V-side buffer with direction control managed by a level-translated signal, and place a unidirectional level shifter (e.g., SN74LVC8T245) on the 3.3V side if bidirectional communication is needed. Alternatively, ensure the microcontroller’s I/O pins are 5V-tolerant. Always include series current-limiting resistors (e.g., 100Ω) on signal lines to dampen transients and reduce risk during hot-plug or ESD events.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
CY74FCT245CTQCT CAD Models
Texas Instruments CY74FCT245CTQCT PCB symbols & footprints
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