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Renesas 74FCT3244QG8
- Part No.:
- 74FCT3244QG8
- Manufacturer:
- Renesas
- Package:
- 20-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
74FCT3244QG8.pdf
- Description:
- IC BUF NON-INVERT 3.6V 20QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,879
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Product details
Overview
74FCT3244QG8 from Renesas Electronics is a 3.3V CMOS octal buffer/line driver with dual-nibble 3-state control, rail-to-rail output swing, ±60mA drive capability, and industrial temperature range (–40°C to +85°C). It serves as a memory data/address driver, clock driver, or bus-oriented transmitter/receiver in embedded control and industrial I/O systems.
For engineers reviewing the 74FCT3244QG8 datasheet, 74FCT3244QG8 pinout, 74FCT3244QG8 application, or 74FCT3244QG8 equivalent, key selection criteria include 3.3V operation with 2.7–3.6V extended supply range, 4.8ns max propagation delay (FCT3244A variant), low 0.4μW static power, and QSOP-20 package compatibility for space-constrained PCB layouts.
Technical Context
The 74FCT3244QG8 implements two independent 4-bit groups (1A/1Y and 2A/2Y) with separate active-low 3-state enable inputs (1OE, 2OE), enabling flexible nibble- or byte-wide bus control. Its dual-metal CMOS process delivers TTL-compatible input thresholds with hysteresis (150mV) and rail-to-rail CMOS output swing for robust noise immunity.
It operates across VCC = 2.7V–3.6V with guaranteed logic levels (VIH ≥ 2.0V, VIL ≤ 0.8V), supports up to 200MHz toggle rates under dynamic load, and features ESD protection >2000V (MIL-STD-883) and >200V (machine model), making it suitable for industrial backplane and I/O expansion interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7V to 3.6V - ensures interoperability with mixed 3.3V logic families and tolerance to supply ripple |
| Propagation Delay | 4.8ns max (tPLH/tPHL) at VCC = 3.3V - enables reliable timing in 100+ MHz address/data buses |
| Output Drive | ±60mA (IODH/IODL) - drives heavy capacitive loads (e.g., 50pF traces, multiple TTL inputs) without signal degradation |
| Input Hysteresis | 150mV - suppresses noise-induced glitches on slow-rising control or data lines in noisy industrial environments |
| Static Power | 0.4μW typical - minimizes standby current in always-on I/O expanders and remote sensor nodes |
| Operating Temp | –40°C to +85°C - certified for use in industrial PLCs, motor drives, and outdoor automation equipment |
Pinout & Package
74FCT3244QG8 is housed in a 20-pin Quarter-size Small Outline Package (QSOP), 0.150" body width, 0.65mm lead pitch, JEDEC MO-137 compliant. Pin 10 is GND; Pin 20 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE | Active-Low 3-State Enable | Independent control of Group 1 (pins 1A1–1A4/1Y1–1Y4) and Group 2 (2A1–2A4/2Y1–2Y4) |
| 1A1–1A4, 2A1–2A4 | Data Inputs | TTL-compatible inputs with hysteresis; accept 0V–VCC logic levels |
| 1Y1–1Y4, 2Y1–2Y4 | 3-State Outputs | Rail-to-rail CMOS outputs; high-impedance when respective OE is HIGH |
| 10 | GND | Signal reference ground for all I/O and internal logic |
| 20 | VCC | Primary 3.3V supply; decoupling capacitor required within 1cm |
Key Features
| Feature | Design Value |
|---|---|
| Dual-nibble 3-state control | Enables selective activation of 4-bit sub-buses without external logic, reducing gate count in I/O expander designs |
| Rail-to-rail output swing | Delivers full VCC–GND voltage swing for maximum noise margin in electrically noisy factory-floor environments |
| 0.5μm CMOS process | Provides stable performance across temperature and voltage while minimizing dynamic power consumption |
| Hysteresis on all inputs | Eliminates metastability on slow-slew control signals (e.g., front-panel switches, isolated GPIO) without external RC filtering |
Applications
| Memory Interface Expansion | Industrial Bus Transceiver |
|---|---|
Use Scenario: Adding parallel SRAM or Flash memory to a microcontroller with limited address/data pins. IC Role / Device Role / Timing Role: Bidirectional address/data buffer with independent nibble enables for multiplexed bus sharing. Use Value: Enables clean separation of upper/lower address bytes during memory access cycles, eliminating contention and timing skew. | Use Scenario: Isolating and driving a shared 8-bit control bus between PLC CPU and distributed I/O modules. IC Role / Device Role / Timing Role: Unidirectional line driver with high-current outputs for long-trace bus segments. Use Value: Maintains signal integrity over 15cm+ PCB traces or ribbon cables by sourcing/sinking ±60mA per line. |
| Clock Distribution | Legacy Peripheral Interface |
Use Scenario: Fan-out of a system clock to multiple synchronous peripherals (ADCs, DACs, FPGAs). IC Role / Device Role / Timing Role: Low-skew, low-jitter clock buffer with matched propagation delays across all eight outputs. Use Value: Ensures <500ps inter-output skew, preserving setup/hold timing margins across multi-chip clock domains. | Use Scenario: Interfacing a modern 3.3V SoC to legacy 5V TTL peripherals via level-shifted control/data lines. IC Role / Device Role / Timing Role: Voltage-tolerant input buffer and CMOS output driver with 2.0V VIH minimum. Use Value: Accepts 5V-tolerant inputs (up to VCC+0.5V) while delivering clean 3.3V CMOS outputs-no external level shifters needed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74FCT3244AQG8 | Faster 4.8ns max tPLH vs. 6.5ns for standard 74FCT3244QG8; identical pinout and DC specs | Required for >80MHz bus timing closure; otherwise functionally interchangeable | Select 74FCT3244AQG8 when propagation delay budget is critical; otherwise 74FCT3244QG8 suffices for ≤66MHz systems |
| SN74LVC8T245RHLR | Direction-controlled (not 3-state enable); 3.3V-only supply; no hysteresis; 32mA drive | Requires external direction logic; unsuitable for noise-prone environments without added filtering | Choose only if bidirectional data flow is needed and board space allows extra control logic |
Compared with 74FCT3244AQG8 and SN74LVC8T245RHLR, the 74FCT3244QG8 offers optimal balance of industrial-grade noise immunity, dual-nibble control, and proven reliability in long-lifecycle embedded systems-without requiring layout changes or additional support components.
Availability
74FCT3244QG8 is available at Aetrix Electronics and suitable for industrial PLCs, memory expansion modules, clock distribution networks, and legacy peripheral interface circuits requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for 74FCT3244QG8 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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and timing solutions for automotive, industrial, and infrastructure markets.
The 74FCT3244QG8 belongs to Renesas' legacy FCT logic family, designed specifically for high-reliability, low-power 3.3V bus interfacing in industrial control and instrumentation systems.
FAQ
What is the operating voltage range for the 74FCT3244QG8?
The 74FCT3244QG8 operates across VCC = 2.7V to 3.6V, with nominal 3.3V ±0.3V performance specified. This extended range accommodates brown-out conditions and supply ripple in industrial power rails while maintaining full functionality and timing compliance.
Does the 74FCT3244QG8 support hot insertion?
No, the 74FCT3244QG8 does not support hot insertion. Its absolute maximum terminal voltage ratings require VCC to be stable before applying input signals, and no bus-hold or power-up 3-state features are implemented. System-level hot-swap protection must be added externally.
What is the maximum capacitive load the 74FCT3244QG8 can drive reliably?
The 74FCT3244QG8 is characterized with CL = 50pF in switching tests and supports sustained operation into ≥50pF loads at full speed. For loads exceeding 75pF, propagation delay increases linearly and output rise/fall times degrade-designers should verify timing margins using the device's 6.5ns max tPLH/tPHL at worst-case VCC and temperature.
Is the 74FCT3244QG8 RoHS compliant and lead-free?
Yes, the 74FCT3244QG8 is RoHS compliant and lead-free. Per Renesas' ordering information and rebranded 2020 datasheet, all orderable variants-including 74FCT3244QG8-meet JEDEC J-STD-609 Category 3 moisture sensitivity and IPC/JEDEC J-STD-020D.2 reflow profiles.
How does the hysteresis on 74FCT3244QG8 inputs improve system robustness?
The 150mV input hysteresis on the 74FCT3244QG8 prevents chatter on slowly transitioning or noisy control lines (e.g., mechanical switch inputs, opto-isolated signals). It ensures clean, glitch-free 3-state enable/disable transitions without requiring external Schmitt-trigger buffers or RC filters.
74FCT3244QG8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 74FCT
- Package/Case:
- 20-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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-QSOP
74FCT3244QG8 FAQ
1.How can I place an order for 74FCT3244QG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74FCT3244QG8 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 74FCT3244QG8 reliable?
The price and inventory of 74FCT3244QG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74FCT3244QG8 is usually 5 days.
3.What payment methods are accepted for 74FCT3244QG8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74FCT3244QG8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74FCT3244QG8?
74FCT3244QG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74FCT3244QG8 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 74FCT3244QG8?
For technical support, including 74FCT3244QG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74FCT3244QG8 requirements.
6.How does Aetrix verify that 74FCT3244QG8 is sourced from the original manufacturer or authorized distributors?
All 74FCT3244QG8 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 74FCT3244QG8 meets industry standards.
7.What is the process for return or replacement of 74FCT3244QG8?
All 74FCT3244QG8 units undergo pre-shipment inspection (PSI). If there is an issue with 74FCT3244QG8, 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 74FCT3244QG8 part is unused and in its original packaging.
Return procedure for 74FCT3244QG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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