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Renesas 74FCT3244SOG8
- Part No.:
- 74FCT3244SOG8
- Manufacturer:
- Renesas
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74FCT3244SOG8.pdf
- Description:
- IC BUF NON-INVERT 3.6V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,580
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Product details
Overview
74FCT3244SOG8 from Renesas Electronics is a 3.3V CMOS octal buffer/line driver with dual-nibble 3-state control, 6.5 ns max propagation delay (FCT3244A), ±60 mA output drive, rail-to-rail output swing, and industrial temperature range (–40°C to +85°C). It serves as a memory address/data driver or bus-oriented transmitter in high-speed digital systems.
For engineers reviewing the 74FCT3244SOG8 datasheet, 74FCT3244SOG8 pinout, 74FCT3244SOG8 application, or 74FCT3244SOG8 equivalent, key selection criteria include 3-state enable timing (tPZH/tPHZ ≤ 6.2 ns), input hysteresis (150 mV), low static power (0.1 µA typ.), and SOIC-20 package compatibility with legacy 74-series layouts.
Technical Context
The 74FCT3244SOG8 implements two independent 4-bit groups (1A1–1A4 / 2A1–2A4) with separate active-low 3-state enables (1OE, 2OE), enabling byte- or nibble-level bus control. Inputs feature hysteresis for noise immunity, and outputs deliver TTL-compatible voltage levels with rail-to-rail swing under 3.3V supply.
It operates across VCC = 2.7V–3.6V, with guaranteed logic thresholds (VIH ≥ 2.0V, VIL ≤ 0.8V), absolute maximum terminal voltages up to VCC+0.5V on outputs, and dynamic current consumption scaling linearly with toggle frequency and number of active bits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7V to 3.6V - supports wide-margin 3.3V system rails and brown-out tolerance |
| Propagation Delay | ≤ 4.8 ns (max, FCT3244A) - enables >200 MHz bus operation with setup/hold margin |
| Output Drive | ±60 mA (IOH/IOL) - drives 50 Ω transmission lines or multiple TTL loads directly |
| Input Hysteresis | 150 mV - rejects <150 mV noise on address/control lines without external filtering |
| Quiescent Current | 0.1 µA (typ) - negligible standby power in battery-backed or low-power sleep modes |
| Operating Temp | –40°C to +85°C - qualified for industrial automation, motor control, and outdoor embedded systems |
| Input Capacitance | 3.5 pF (typ) - minimizes loading on high-speed clock or data source drivers |
Pinout & Package
74FCT3244SOG8 is supplied in a 20-pin SOIC package (PSG20 footprint, 0.300" body width, 1.27 mm pitch), compatible with standard JEDEC MS-013AC outlines and automated SMT assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low 3-state enables - independently disable nibble 1 (pins 3–6) or nibble 2 (pins 14–17) |
| 3–6, 14–17 | 1A1–1A4, 2A1–2A4 | Data inputs - accept 3.3V CMOS/TTL logic; hysteresis improves noise rejection |
| 2, 4–7, 13, 15–18 | 1Y1–1Y4, 2Y1–2Y4 | 3-state outputs - rail-to-rail swing (0V to VCC) ensures >1.0V noise margin at 3.3V |
| 10, 20 | GND, VCC | Power terminals - decoupling required within 10 mm of pin 10 (GND) and pin 20 (VCC) |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | VOH = VCC–0.2V (min), VOL = 0.2V (max) - maximizes noise immunity in noisy industrial environments |
| Dual-nibble 3-state control | Separate 1OE/2OE pins - enables partial bus isolation without full device disable |
| Input hysteresis | 150 mV threshold offset - eliminates chatter on slow-rising signals (e.g., reset, watchdog outputs) |
| Low dynamic power | ICCD = 60 µA/MHz - reduces thermal load in dense PCB layouts with multiple buffers |
| ESD robustness | 2000V HBM, 200V MM - withstands handling and board-level ESD events without protection diodes |
Applications
| Memory Address Buffering | Industrial Bus Transceiver |
|---|---|
|
Use Scenario: Driving 16-bit address bus from microcontroller to SRAM or flash memory in PLC backplane. IC Role / Device Role / Timing Role: Octal buffer isolating MCU address pins from capacitive bus load; dual-nibble enables staggered enable for skew control. Use Value: 4.8 ns max tPLH ensures address valid time meets 10 ns SRAM access requirements at 3.3V. |
Use Scenario: Level-shifting and driving CAN or RS-485 transceiver control lines in motor drive I/O module. IC Role / Device Role / Timing Role: Line driver for EN/DE signals; rail-to-rail output guarantees clean logic transitions into transceiver inputs. Use Value: ±60 mA drive strength sustains signal integrity across 15 cm PCB traces with 10 pF load. |
| High-Speed Clock Distribution | Legacy Peripheral Interface |
|
Use Scenario: Fanout of 25 MHz system clock to multiple FPGA configuration pins and ADC sampling clocks. IC Role / Device Role / Timing Role: Low-skew buffer with matched tPLH/tPHL; hysteresis suppresses jitter from clock tree reflections. Use Value: 3.5 pF input capacitance minimizes clock source loading, preserving edge rate. |
Use Scenario: Interfacing modern 3.3V SoC GPIO to legacy 5V parallel LCD controller or printer port. IC Role / Device Role / Timing Role: Voltage-tolerant buffer (inputs rated to VCC+0.5V) isolating 3.3V core from 5V peripherals. Use Value: VIH = 2.0V min ensures reliable detection of 5V-tolerant peripheral ACK signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVC244APW,118 | Lower drive (±24 mA), higher max speed (4.4 ns), 1.65–3.6V VCC range | Better suited for ultra-low-power portable designs; insufficient drive for 50 Ω line termination | Select when power budget <10 µA and load impedance >100 Ω |
| SN74AHCT244N | 5V-only supply (4.5–5.5V), TTL-compatible inputs, no hysteresis, 10 ns max tPD | Requires level translation for 3.3V systems; lacks noise immunity for industrial noise environments | Select only in pure 5V legacy systems where hysteresis is not required |
Compared with 74FCT3244SOG8, the 74LVC244APW offers lower static power but reduced drive capability, while SN74AHCT244N provides 5V compatibility at the cost of noise margin and 3.3V incompatibility - making 74FCT3244SOG8 optimal for industrial 3.3V bus buffering with robust EMC performance.
Availability
74FCT3244SOG8 is available at Aetrix Electronics and suitable for industrial automation, motor control, and embedded communications requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 74FCT3244SOG8 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog, power, and timing solutions for automotive, industrial, and infrastructure markets.
The 74FCT3244SOG8 belongs to Renesas' FCT logic family, engineered for high-speed, low-noise 3.3V bus interfacing in industrial control and programmable logic applications.
FAQ
What is the maximum operating frequency supported by the 74FCT3244SOG8?
The 74FCT3244SOG8 does not specify a maximum clock frequency, as it is a non-clocked buffer. Its usable data rate is determined by propagation delay (≤4.8 ns for FCT3244A) and system timing margins. For a 16-bit address bus with 5 ns setup time, the 74FCT3244SOG8 supports reliable operation up to approximately 100 MHz bus toggle rates.
Does the 74FCT3244SOG8 support mixed-voltage operation between 3.3V and 5V domains?
The 74FCT3244SOG8 accepts input voltages up to VCC+0.5V (≤4.1V at 3.6V VCC), but its inputs are not 5V-tolerant. Driving it directly from 5V logic violates absolute maximum ratings. Use level-shifting circuitry or a 5V-tolerant alternative like SN74LVC244A if interfacing with 5V sources.
How does the hysteresis in the 74FCT3244SOG8 improve system reliability?
The 150 mV input hysteresis in the 74FCT3244SOG8 raises the VIH threshold after a HIGH transition and lowers the VIL threshold after a LOW transition. This prevents oscillation on slow or noisy signals - such as reset lines or mechanical switch inputs - eliminating false triggering without external RC filtering.
Can the 74FCT3244SOG8 be used as a level shifter between 1.8V and 3.3V logic?
No. The 74FCT3244SOG8 requires VCC = 2.7V–3.6V and is not characterized for 1.8V supply. Its input thresholds (VIH ≥ 2.0V) are incompatible with 1.8V logic HIGH levels (~1.35V). For 1.8V-to-3.3V translation, use a dedicated level shifter such as TXB0108 or 74LVC1T45.
What is the thermal performance of the 74FCT3244SOG8 in continuous operation?
In typical SOIC-20 operation at TA = +85°C, VCC = 3.6V, and all eight outputs sourcing/sinking 24 mA, the 74FCT3244SOG8 dissipates ≤120 mW. With standard 2 oz copper and 1 in² pad area, junction temperature remains ≤115°C - well below the 150°C storage limit and within safe long-term reliability margins.
74FCT3244SOG8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 74FCT
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 4
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 8mA, 24mA
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
74FCT3244SOG8 FAQ
1.How can I place an order for 74FCT3244SOG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74FCT3244SOG8 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 74FCT3244SOG8 reliable?
The price and inventory of 74FCT3244SOG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74FCT3244SOG8 is usually 5 days.
3.What payment methods are accepted for 74FCT3244SOG8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74FCT3244SOG8 transactions.
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4.How is shipping managed for 74FCT3244SOG8?
74FCT3244SOG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74FCT3244SOG8 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 74FCT3244SOG8?
For technical support, including 74FCT3244SOG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74FCT3244SOG8 requirements.
6.How does Aetrix verify that 74FCT3244SOG8 is sourced from the original manufacturer or authorized distributors?
All 74FCT3244SOG8 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74FCT3244SOG8 meets industry standards.
7.What is the process for return or replacement of 74FCT3244SOG8?
All 74FCT3244SOG8 units undergo pre-shipment inspection (PSI). If there is an issue with 74FCT3244SOG8, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 74FCT3244SOG8 part is unused and in its original packaging.
Return procedure for 74FCT3244SOG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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