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Renesas 74FCT2244ATSOG8
- Part No.:
- 74FCT2244ATSOG8
- Manufacturer:
- Renesas
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74FCT2244ATSOG8.pdf
- Description:
- IC BUF NON-INVERT 5.25V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,009
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Product details
Overview
74FCT2244ATSOG8 from Renesas Electronics (formerly IDT) is a fast CMOS octal buffer/line driver with dual 4-bit 3-state outputs, designed for memory and address bus driving, clock distribution, and bus-oriented transmitter/receiver applications. It features true TTL input/output compatibility (VOH = 3.3 V typ., VOL = 0.3 V typ.), ±15 mA output drive, industrial temperature range (–40°C to +85°C), and SOIC-20 package.
For engineers reviewing the 74FCT2244ATSOG8 datasheet, 74FCT2244ATSOG8 pinout, 74FCT2244ATSOG8 application, or 74FCT2244ATSOG8 equivalent, key selection criteria include its balanced output drive with integrated current-limiting resistors, low ground bounce, controlled fall times, and plug-in replacement capability for 74FCT244T in legacy 5 V systems.
Technical Context
The 74FCT2244ATSOG8 implements two independent 4-bit non-inverting buffers, each with active-low 3-state enable (OEA and OEB). Its dual-enable architecture allows selective control of two 4-bit groups, supporting flexible bus partitioning and bidirectional data flow management in address/data multiplexed systems.
It uses advanced dual-metal CMOS technology to achieve TTL-compatible voltage levels while maintaining CMOS power efficiency (ICC ≤ 1 mA typ., ΔICC ≤ 2 mA max). Output terminals incorporate built-in current-limiting resistors to reduce system switching noise and eliminate need for external series termination.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply Voltage | 5.0 V ±5% - fixed single-rail operation for legacy 5 V logic systems |
| Output Drive | –15 mA IOH / +12 mA IOL - sufficient to drive multiple TTL loads without external buffers |
| Propagation Delay | 4.8 ns max (tPLH/tPHL) - supports high-speed bus timing up to ~200 MHz in short traces |
| Enable/Disable Time | 6.2 ns max (tPZH/tPLZ) - enables precise timing control for burst-mode or strobed bus access |
| Input Leakage | ≤1 µA max - ensures stable logic levels in high-impedance or low-power standby states |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded control and instrumentation |
| Input Capacitance | 10 pF max - minimizes capacitive loading on upstream drivers and clock sources |
Pinout & Package
74FCT2244ATSOG8 is housed in a 20-pin Small Outline Integrated Circuit (SOIC-20) package with standard 0.3-inch body width and 0.050-inch lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OEA, OEB | Active-low 3-state enable inputs controlling separate 4-bit output groups (DA0–DA3 and DB0–DB3) |
| 2–5, 13–16 | DA0–DA3, DB0–DB3 | Non-inverting data inputs for respective output channels |
| 6–9, 17–20 | OA0–OA3, OB0–OB3 | Buffered non-inverting outputs with current-limiting resistors and 3-state capability |
| 10 | GND | Digital ground reference for all I/O and internal logic |
| 20 | VCC | +5 V power supply for core logic and output drivers |
Key Features
| Feature | Design Value |
|---|---|
| True TTL input/output compatibility | Guarantees interoperability with legacy 74LS/74ALS families without level-shifting circuitry |
| Balanced output drive with current-limiting resistors | Reduces ground bounce and overshoot, enabling reliable signal integrity on dense PCBs |
| Low quiescent current (ICC ≤ 1 mA) | Minimizes static power draw in always-on industrial control modules |
| Plug-in replacement for 74FCT244T | Enables drop-in upgrade path in existing designs without layout changes |
| Industrial temperature qualification | Validated operation across –40°C to +85°C for use in factory automation and outdoor equipment |
Applications
| Memory Address Buffering | System Clock Distribution |
|---|---|
Use Scenario: Driving 16-bit address buses between microcontroller and SRAM/Flash in industrial PLCs. IC Role / Device Role / Timing Role: Non-inverting octal buffer providing fan-out amplification and noise-immune signal transmission. Use Value: Enables clean, low-skew address propagation across long traces with no external termination required. | Use Scenario: Distributing a master system clock to multiple peripheral ICs in test equipment. IC Role / Device Role / Timing Role: Low-jitter, high-drive line driver isolating clock source from load capacitance variations. Use Value: Maintains tight edge integrity and reduces clock skew across 8 downstream receivers. |
| Legacy Bus Transceiver Interface | Industrial I/O Expansion |
Use Scenario: Interfacing ISA-bus peripherals to modern controllers via adapter cards. IC Role / Device Role / Timing Role: Bidirectional bus driver with independent group enables for read/write direction control. Use Value: Supports time-multiplexed data/address sharing on shared 8-bit legacy buses. | Use Scenario: Expanding digital I/O count in programmable logic controllers using parallel port headers. IC Role / Device Role / Timing Role: High-current, 3-state-capable buffer for driving LED indicators, relays, or optocouplers. Use Value: Delivers 12 mA sink per output-sufficient for direct LED drive without external transistors. |
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 |
|---|---|---|---|
| 74FCT2244CTSO | Same pinout and function; commercial temperature range (0°C to +70°C); identical AC/DC specs except temp grading | Limited to indoor, non-industrial environments; not qualified for extended thermal cycling | Select when cost sensitivity outweighs environmental robustness requirements |
| SN74F244N | 74F-family TTL part; higher ICC (20 mA typ.), no current-limiting resistors, no industrial temp rating | Higher power consumption and greater ground bounce; requires external termination for clean edges | Choose only for strict 74F logic family compliance in legacy designs where FCT advantages are unnecessary |
Compared with 74FCT2244CTSO and SN74F244N, the 74FCT2244ATSOG8 uniquely combines industrial temperature operation, integrated output resistors for reduced EMI, and CMOS-level static power-making it optimal for new industrial designs requiring reliability, low noise, and legacy compatibility.
Availability
74FCT2244ATSOG8 is available at Aetrix Electronics and suitable for industrial control systems, legacy bus interface modules, and embedded memory subsystems requiring stable component supply over extended product lifecycles.
Supply support for 74FCT2244ATSOG8 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 74FCT2244ATSOG8 belongs to Renesas' legacy IDT Fast CMOS logic family, engineered specifically for high-density, low-noise 5 V bus interfacing in industrial and telecom infrastructure equipment.
FAQ
What is the operating voltage range for the 74FCT2244ATSOG8?
The 74FCT2244ATSOG8 operates at a nominal VCC of 5.0 V ±5%, meaning its valid supply range is 4.75 V to 5.25 V. This specification is strictly defined for industrial temperature operation (–40°C to +85°C) and aligns with JEDEC Standard 18. Operation outside this range may result in undefined logic behavior or degraded parametric performance, and is not guaranteed by Renesas.
Does the 74FCT2244ATSOG8 support hot-swap or live-insertion?
No, the 74FCT2244ATSOG8 does not support hot-swap operation. Its absolute maximum ratings specify that no terminal voltage may exceed VCC by more than +0.5 V, and inputs must be driven only after VCC is stable. Applying signals before power-up-or removing VCC while I/O pins are active-can cause latch-up or permanent damage. System-level hot-swap capability requires external protection circuitry not integrated into the 74FCT2244ATSOG8.
How many output groups does the 74FCT2244ATSOG8 have, and how are they controlled?
The 74FCT2244ATSOG8 has two independent 4-bit output groups: OA0–OA3 (driven by DA0–DA3 and enabled by OEA) and OB0–OB3 (driven by DB0–DB3 and enabled by OEB). Each group features active-low 3-state control, allowing simultaneous, selective, or staggered enabling/disabling-enabling flexible bus segmentation and multi-drop timing control in the 74FCT2244ATSOG8.
Is the 74FCT2244ATSOG8 RoHS compliant?
Yes, the 74FCT2244ATSOG8 is RoHS compliant. The "G" suffix in the part number explicitly denotes green (lead-free) packaging per EU RoHS Directive 2011/65/EU. Renesas confirms this variant uses matte-tin lead finish and halogen-free molding compound, with full compliance documentation available in the official device-specific PCN and material declarations.
Can the 74FCT2244ATSOG8 drive standard TTL loads directly?
Yes, the 74FCT2244ATSOG8 is designed for direct TTL load compatibility: its VOH (min 2.4 V at –15 mA) and VOL (max 0.5 V at +12 mA) meet or exceed standard TTL thresholds, and its output structure includes current-limiting resistors to safely sink/source TTL input currents. No external level-shifting or buffering is needed when interfacing with 74LS, 74ALS, or other standard TTL families in the 74FCT2244ATSOG8's specified operating conditions.
74FCT2244ATSOG8 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
74FCT2244ATSOG8 FAQ
1.How can I place an order for 74FCT2244ATSOG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74FCT2244ATSOG8 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 74FCT2244ATSOG8 reliable?
The price and inventory of 74FCT2244ATSOG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74FCT2244ATSOG8 is usually 5 days.
3.What payment methods are accepted for 74FCT2244ATSOG8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74FCT2244ATSOG8 transactions.
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4.How is shipping managed for 74FCT2244ATSOG8?
74FCT2244ATSOG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74FCT2244ATSOG8 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 74FCT2244ATSOG8?
For technical support, including 74FCT2244ATSOG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74FCT2244ATSOG8 requirements.
6.How does Aetrix verify that 74FCT2244ATSOG8 is sourced from the original manufacturer or authorized distributors?
All 74FCT2244ATSOG8 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 74FCT2244ATSOG8 meets industry standards.
7.What is the process for return or replacement of 74FCT2244ATSOG8?
All 74FCT2244ATSOG8 units undergo pre-shipment inspection (PSI). If there is an issue with 74FCT2244ATSOG8, 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 74FCT2244ATSOG8 part is unused and in its original packaging.
Return procedure for 74FCT2244ATSOG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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