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Renesas 74FCT2244CTSOG8
- Part No.:
- 74FCT2244CTSOG8
- Manufacturer:
- Renesas
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74FCT2244CTSOG8.pdf
- Description:
- IC BUF NON-INVERT 5.25V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,420
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Product details
Overview
74FCT2244CTSOG8 from Renesas Electronics (formerly IDT) is a fast CMOS octal buffer/line driver with true TTL input/output compatibility, 3-state outputs controlled by dual active-low enables (OEA/OEB), and industrial temperature range operation (–40°C to +85°C). It delivers VOH = 2.4V min at –15mA IOH, VOL = 0.5V max at 12mA IOL, and propagation delay as low as 1.5ns (typ.), enabling use in memory address bus driving and clock distribution systems.
For engineers reviewing the 74FCT2244CTSOG8 datasheet, 74FCT2244CTSOG8 pinout, 74FCT2244CTSOG8 application, or 74FCT2244CTSOG8 equivalent, key selection criteria include its resistor-limited output drive (–15mA/12mA), low ground bounce design, SOIC-20 package compatibility, and direct replacement capability for legacy FCT244T-based layouts.
Technical Context
The 74FCT2244CTSOG8 implements balanced output drive using integrated current-limiting resistors, reducing ground bounce and eliminating need for external series termination. Its dual active-low 3-state enables (OEA/OEB) allow independent control of two 4-bit groups (DA0–DA3/OA0–OA3 and DB0–DB3/OB0–OB3).
Designed on advanced dual-metal CMOS technology, it meets JEDEC Standard 18 and provides TTL-compatible voltage thresholds (VIH = 2.0V min, VIL = 0.8V max), while maintaining CMOS power efficiency (ICC = 1mA max at VCC = 5.0V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply Voltage | 5.0V ±5% - fixed single-rail operation compatible with legacy 5V TTL/CMOS systems |
| Propagation Delay (tPLH/tPHL) | 1.5ns (min) / 4.1ns (max) - enables high-speed address/data bus buffering up to ~200MHz system timing |
| Output Drive (IOH/IOL) | –15mA / 12mA - resistor-limited sourcing/sinking eliminates external termination and reduces EMI |
| Input Thresholds (VIH/VIL) | 2.0V min / 0.8V max - ensures robust logic-level interoperability with standard TTL outputs |
| Quiescent Current (ICC) | 1mA max - supports low-static-power system design without sacrificing speed |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded control and instrumentation applications |
| Input/Output Leakage | ≤1µA max - prevents signal integrity degradation in high-impedance or battery-backed circuits |
Pinout & Package
74FCT2244CTSOG8 is housed in a 20-pin SOIC (Small Outline IC) package, 7.5mm body width, 1.27mm pitch, RoHS-compliant green finish (G suffix). Pin 10 is VCC; Pin 19 is GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DA0–DA3 | Input Group A | Four data inputs routed to outputs OA0–OA3 when OEA = LOW |
| DB0–DB3 | Input Group B | Four data inputs routed to outputs OB0–OB3 when OEB = LOW |
| OA0–OA3 | Output Group A | Buffered, 3-state outputs enabled by OEA; high-impedance when OEA = HIGH |
| OB0–OB3 | Output Group B | Buffered, 3-state outputs enabled by OEB; high-impedance when OEB = HIGH |
| OEA, OEB | Active-Low 3-State Enables | Independent control of two 4-bit output groups; both must be LOW for full 8-bit drive |
| VCC (Pin 10) | Power Supply | 5V supply connection; decoupling capacitor required adjacent to pin |
| GND (Pin 19) | Ground Reference | Primary return path for all I/O and supply currents; low-inductance layout critical |
Key Features
| Feature | Design Value |
|---|---|
| Resistor-limited outputs | –15mA IOH / 12mA IOL drive with built-in current limiting eliminates need for external series resistors |
| Low ground bounce | Balanced output drive and controlled fall times reduce simultaneous switching noise on shared PCB ground planes |
| TTL-compatible I/O | VOH = 2.4V min at –15mA and VOL = 0.5V max at 12mA ensure interoperability with legacy 5V TTL logic families |
| Dual independent 3-state control | OEA and OEB enable selective activation of two 4-bit output banks, supporting split-bus or multiplexed address/data routing |
| JEDEC Std 18 compliance | Meets industry-standard electrical and mechanical requirements for interoperability across 5V logic systems |
Applications
| Memory Address Buffering | Microcontroller Bus Interface |
|---|---|
|
Use Scenario: Driving 16-bit address lines from an MCU to multiple SRAM or Flash devices on a shared bus. IC Role / Device Role / Timing Role: Octal buffer isolating and strengthening address signals while minimizing capacitive loading and ground bounce. Use Value: Enables reliable 5V address bus fanout to ≥4 memory chips without signal integrity loss or timing violations. |
Use Scenario: Interfacing an 8-bit microcontroller port to a peripheral requiring higher drive strength and 3-state control. IC Role / Device Role / Timing Role: Level-shifting and current-boosting buffer with independent group enables for bidirectional data handshaking. Use Value: Supports clean peripheral read/write cycles via OEA/OEB-controlled direction switching and TTL-compatible voltage margins. |
| Legacy System Upgrade | Industrial Clock Distribution |
|
Use Scenario: Replacing obsolete 74F244 or 74LS244 in aging industrial controllers where board space and pinout are fixed. IC Role / Device Role / Timing Role: Drop-in functional and pin-compatible upgrade delivering lower power and improved noise immunity. Use Value: Maintains existing PCB layout while reducing ICC by >50% and eliminating external termination resistors. |
Use Scenario: Distributing a 5V clock signal from a crystal oscillator to multiple synchronous peripherals (ADCs, DACs, timers). IC Role / Device Role / Timing Role: Low-skew, low-jitter buffer with matched propagation delays across all eight outputs. Use Value: Ensures sub-nanosecond skew between clock destinations, preserving setup/hold timing across multi-chip systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer/line driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74FCT2244ATSO | A-grade version (–40°C to +85°C); identical pinout, timing, and drive specs; same SOIC-20 package | No functional difference; A-grade may have tighter initial parametric screening but same guaranteed min/max limits | Select 74FCT2244ATSO only if A-grade qualification documentation is explicitly required by your quality system |
| SN74F244N | TI part; TTL technology; higher ICC (20mA typ), no built-in output resistors, requires external termination | Higher power consumption and greater ground bounce; not suitable for noise-sensitive or low-power industrial designs | Choose SN74F244N only for legacy repair where original F244 footprint must be retained and power/noise budgets permit |
Compared with 74FCT2244CTSOG8, the 74FCT2244ATSO offers identical performance with minor screening differences, while SN74F244N demands higher supply current and external components-making 74FCT2244CTSOG8 the preferred choice for new industrial designs requiring low-noise, low-power, and simplified layout.
Availability
74FCT2244CTSOG8 is available at Aetrix Electronics and suitable for memory subsystems, microcontroller interface circuits, and industrial clock distribution networks requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for 74FCT2244CTSOG8 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 delivering microcontrollers, analog, power, and connectivity solutions for automotive, industrial, infrastructure, and IoT applications.
The 74FCT2244CTSOG8 belongs to Renesas' legacy IDT fast CMOS logic family, engineered specifically for high-density, low-noise 5V bus interfacing in industrial and telecom equipment where reliability and signal integrity are critical.
FAQ
What is the operating voltage range for the 74FCT2244CTSOG8?
The 74FCT2244CTSOG8 operates strictly at VCC = 5.0V ±5%, with absolute maximum terminal voltage of –0.5V to +7.0V on inputs and VCC+0.5V on outputs. It is not rated for 3.3V or mixed-voltage operation. All DC and switching specifications-including VOH, VOL, tPLH, and ICC-are guaranteed only within this 4.75V–5.25V window.
Does the 74FCT2244CTSOG8 support hot-swap or live-insertion?
No, the 74FCT2244CTSOG8 does not support hot-swap. Its absolute maximum ratings specify no overvoltage tolerance on inputs during power-up sequencing, and the device lacks bus-hold or power-off protection circuitry. Applying input signals before VCC stabilization risks latch-up or permanent damage per the datasheet's Absolute Maximum Ratings table.
How does the 74FCT2244CTSOG8 differ from the 74FCT244T?
The 74FCT2244CTSOG8 is a plug-in replacement for the 74FCT244T, sharing identical pinout, function table, and electrical specs. Key improvements include enhanced output current limiting, reduced ground bounce, and updated JEDEC Std 18 compliance. The "2244" designation reflects optimized drive characteristics versus the earlier "244" variant.
Can both OEA and OEB be used simultaneously to enable all eight outputs of the 74FCT2244CTSOG8?
Yes-driving both OEA and OEB LOW simultaneously enables all eight outputs (OA0–OA3 and OB0–OB3) in parallel. This configuration is explicitly supported in the Function Table and used in memory address and data bus applications where full 8-bit drive is required without interleaving.
Is the 74FCT2244CTSOG8 RoHS compliant and lead-free?
Yes, the "G" suffix in 74FCT2244CTSOG8 denotes green (lead-free, halogen-free) packaging per Renesas' RoHS compliance program. The SOIC-20 package uses matte tin lead finish and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1), allowing unlimited floor life at ≤30°C/60% RH.
74FCT2244CTSOG8 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:
- 15mA, 12mA
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
74FCT2244CTSOG8 FAQ
1.How can I place an order for 74FCT2244CTSOG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74FCT2244CTSOG8 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 74FCT2244CTSOG8 reliable?
The price and inventory of 74FCT2244CTSOG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74FCT2244CTSOG8 is usually 5 days.
3.What payment methods are accepted for 74FCT2244CTSOG8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74FCT2244CTSOG8 transactions.
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4.How is shipping managed for 74FCT2244CTSOG8?
74FCT2244CTSOG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74FCT2244CTSOG8 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 74FCT2244CTSOG8?
For technical support, including 74FCT2244CTSOG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74FCT2244CTSOG8 requirements.
6.How does Aetrix verify that 74FCT2244CTSOG8 is sourced from the original manufacturer or authorized distributors?
All 74FCT2244CTSOG8 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 74FCT2244CTSOG8 meets industry standards.
7.What is the process for return or replacement of 74FCT2244CTSOG8?
All 74FCT2244CTSOG8 units undergo pre-shipment inspection (PSI). If there is an issue with 74FCT2244CTSOG8, 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 74FCT2244CTSOG8 part is unused and in its original packaging.
Return procedure for 74FCT2244CTSOG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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