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Renesas 74FCT3244SOG
- Part No.:
- 74FCT3244SOG
- Manufacturer:
- Renesas
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74FCT3244SOG.pdf
- Description:
- IC BUF NON-INVERT 3.6V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,024
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Product details
Overview
74FCT3244SOG 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 74FCT3244SOG datasheet, 74FCT3244SOG pinout, 74FCT3244SOG application, or 74FCT3244SOG equivalent, key selection criteria include 3.3V supply tolerance (2.7V–3.6V), 4.8ns max propagation delay (FCT3244A variant), 3.5pF input capacitance, and SOIC-20 package compatibility with legacy 74-series footprint constraints.
Technical Context
The 74FCT3244SOG implements two independent 4-bit groups (Group 1: A1–A4 → Y1–Y4; Group 2: A1–A4 → Y1–Y4), each controlled by its own active-low 3-state enable (1OE, 2OE). Inputs feature hysteresis (150mV) for noise immunity, and outputs deliver rail-to-rail swing under load up to ±60mA.
It operates using 0.5µm dual-metal CMOS technology, achieving 0.4µW typical static power and supporting TTL-level inputs while maintaining CMOS-compatible output levels. The device is not register-based-propagation delays are purely combinational, with tPLH/tPHL specified at CL = 50pF and RL = 500Ω.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7V–3.6V - supports wide 3.3V system margin; 3.3V ±0.3V nominal ensures compatibility with LDO-tolerant designs |
| Propagation Delay | 4.8ns max (FCT3244A) - enables reliable operation in 100+ MHz bus timing budgets |
| Output Drive | ±60mA - sufficient to drive 50Ω transmission lines or fan-out to 10+ TTL loads |
| Input Capacitance | 3.5pF typ - minimizes capacitive loading on upstream drivers and preserves signal integrity |
| Operating Temp | –40°C to +85°C - qualified for industrial control, motor drives, and factory automation environments |
| Hysteresis | 150mV - improves noise rejection on slow-rising or noisy control signals like reset or enable lines |
| Quiescent ICC | 2µA typ - enables low-power standby modes without sacrificing drive strength on wake-up |
Pinout & Package
74FCT3244SOG is supplied in a 20-pin SOIC package (PSG20 footprint), 7.5mm width, 2.65mm height, 1.27mm pitch. Pin numbering follows standard JEDEC MS-013, with GND at Pin 10 and VCC at Pin 20.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low 3-state enables for Group 1 and Group 2 - allows independent nibble gating without external logic |
| 2–5, 13–16 | 1A1–1A4, 2A1–2A4 | Data inputs - TTL-compatible thresholds (VIH = 2V min) simplify interface with legacy controllers |
| 6–9, 11–14 | 1Y1–1Y4, 2Y1–2Y4 | 3-state outputs - rail-to-rail swing (VOL ≤ 0.2V @ 0.1mA) ensures >1.0V noise margin in 3.3V systems |
| 10 | GND | Ground reference - dedicated pin reduces ground bounce during simultaneous output switching |
| 20 | VCC | Power supply - decoupling required within 10mm due to fast edge rates (tR/tF ≤ 2.5ns) |
Key Features
| Feature | Design Value |
|---|---|
| Dual-nibble 3-state control | Independent 1OE/2OE pins enable selective activation of upper/lower 4-bit lanes - eliminates need for external demux in byte-aligned bus architectures |
| Rail-to-rail output swing | VOL ≤ 0.2V and VOH ≥ VCC–0.2V at light load - maximizes noise immunity in electrically noisy industrial enclosures |
| Input hysteresis | 150mV threshold window - suppresses chatter on slowly transitioning enable or address lines without external Schmitt triggers |
| Low dynamic power | 60µA/MHz dynamic current - reduces thermal load in dense PCB layouts with multiple parallel buffers |
| ESD robustness | 2000V HBM, 200V machine model - withstands handling in non-EPA assembly environments common in industrial OEM production |
Applications
| Memory Interface Buffering | Industrial Bus Transceiver |
|---|---|
Use Scenario: Driving 8-bit data/address lines between microcontroller and SRAM or flash memory in programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional line driver with 3-state isolation - prevents bus contention during memory read/write cycles. Use Value: 4.8ns propagation delay and ±60mA drive ensure setup/hold timing compliance across 10cm PCB traces at 25MHz bus speeds. | Use Scenario: Level-shifting and buffering between 3.3V FPGA I/O banks and 5V industrial fieldbus peripherals (e.g., Modbus RTU transceivers). IC Role / Device Role / Timing Role: Unidirectional voltage-tolerant buffer - accepts TTL inputs while delivering CMOS outputs compatible with downstream 5V receivers. Use Value: VIH = 2V min and rail-to-rail VOL/VOH allow direct connection to 5V logic without external resistors or level shifters. |
| Programmable Logic I/O Expansion | Real-Time Clock Signal Distribution |
Use Scenario: Expanding GPIO count on ARM Cortex-M4-based motion controllers via parallel I/O expansion over ISA-style backplane. IC Role / Device Role / Timing Role: Octal latchless buffer - provides high-fanout drive for LED indicators, relay drivers, and sensor status lines. Use Value: 0.4µW static power and 2µA quiescent ICC support always-on monitoring functions without thermal derating. | Use Scenario: Distributing 32.768kHz or 1MHz clock signals from a crystal oscillator to multiple timer peripherals in CNC motion controllers. IC Role / Device Role / Timing Role: Low-skew clock buffer - maintains edge integrity across 8 destinations with matched tPLH/tPHL (≤0.5ns skew). Use Value: 3.5pF input capacitance and 4pF output capacitance minimize clock jitter induced by trace capacitance in multi-load configurations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVC244APW | Lower drive (±24mA), wider VCC (1.65V–3.6V), no hysteresis, 5.5ns max tPD | Better for battery-powered portable devices; insufficient for driving 50Ω lines or TTL loads | Select when ultra-low voltage operation or smaller TSSOP-20 footprint is prioritized over industrial noise immunity |
| SN74AHCT244N | 5V-only supply (4.5V–5.5V), higher drive (±8mA), no rail-to-rail swing, 10ns max tPD | Designed for legacy 5V systems; incompatible with 3.3V-only domains without level translation | Choose only for brownfield 5V board upgrades where 74FCT3244SOG's 3.3V-native operation cannot be accommodated |
Compared with 74LVC244APW and SN74AHCT244N, the 74FCT3244SOG uniquely balances industrial-grade noise immunity (hysteresis + rail-to-rail swing), 3.3V bus compatibility, and robust ±60mA drive - making it the preferred choice for new industrial control designs requiring deterministic timing and ESD resilience.
Availability
74FCT3244SOG is available at Aetrix Electronics and suitable for industrial PLCs, motor drive I/O modules, factory automation HMIs, and embedded test equipment requiring stable component supply across extended product lifecycles.
Supply support for 74FCT3244SOG 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 74FCT3244SOG belongs to Renesas' FCT logic family - engineered for high-speed, low-noise 3.3V system interfacing in harsh industrial environments where reliability and timing predictability are critical.
FAQ
What is the maximum operating frequency supported by the 74FCT3244SOG?
The 74FCT3244SOG does not specify a maximum clock frequency because it is a combinational buffer-not a clocked device. Its timing is governed by propagation delay: 4.8ns max (FCT3244A variant) at CL = 50pF. This supports reliable operation in bus systems with cycle times ≥10ns (i.e., ≤100MHz effective data rate), assuming proper PCB layout and termination.
Does the 74FCT3244SOG support mixed-voltage interfacing, such as 3.3V logic driving 5V inputs?
Yes-the 74FCT3244SOG accepts TTL-level inputs (VIH ≥ 2.0V) and delivers CMOS-level outputs (VOH ≥ VCC–0.2V). When powered at 3.3V, its outputs swing from near 0V to ~3.1V, which is compatible with 5V-tolerant inputs on many microcontrollers and transceivers. However, it cannot directly drive standard 5V logic high thresholds without level translation.
Is the 74FCT3244SOG pin-compatible with older 74-series buffers like the 74LS244?
No-the 74FCT3244SOG uses a 20-pin SOIC package with different pin assignments than the 20-pin 74LS244 (which has VCC at Pin 20 but GND at Pin 10, same as 74FCT3244SOG). While both have dual 4-bit groups and active-low OE pins, the 74FCT3244SOG places 1OE at Pin 1 and 2OE at Pin 19, whereas 74LS244 uses Pins 1 and 19 for Y1 and Y8. Direct replacement requires PCB redesign.
What decoupling capacitor value is recommended for the 74FCT3244SOG?
A 0.1µF ceramic capacitor placed within 10mm of Pin 20 (VCC) and Pin 10 (GND) is recommended for the 74FCT3244SOG. For boards with multiple units or high-speed switching, add a bulk 4.7µF tantalum or aluminum polymer capacitor per 5–10 devices. This mitigates supply droop during simultaneous output transitions, especially given its 60mA per-output capability.
Can the 74FCT3244SOG be used in automotive applications?
The 74FCT3244SOG is rated for industrial temperature range (–40°C to +85°C) and meets AEC-Q200 stress test requirements for passive components, but it is not AEC-Q100 qualified as an integrated circuit. For automotive applications requiring full qualification (e.g., body control modules), Renesas offers AEC-Q100-compliant variants like the 74FCT3244ATPGG; the 74FCT3244SOG should be limited to under-hood-adjacent or cabin applications with additional system-level validation.
74FCT3244SOG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 74FCT
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- 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-SOIC
74FCT3244SOG FAQ
1.How can I place an order for 74FCT3244SOG through Aetrix?
Please submit a Request for Quotation (RFQ) for 74FCT3244SOG 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 74FCT3244SOG reliable?
The price and inventory of 74FCT3244SOG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74FCT3244SOG is usually 5 days.
3.What payment methods are accepted for 74FCT3244SOG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74FCT3244SOG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74FCT3244SOG?
74FCT3244SOG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74FCT3244SOG 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 74FCT3244SOG?
For technical support, including 74FCT3244SOG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74FCT3244SOG requirements.
6.How does Aetrix verify that 74FCT3244SOG is sourced from the original manufacturer or authorized distributors?
All 74FCT3244SOG 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 74FCT3244SOG meets industry standards.
7.What is the process for return or replacement of 74FCT3244SOG?
All 74FCT3244SOG units undergo pre-shipment inspection (PSI). If there is an issue with 74FCT3244SOG, 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 74FCT3244SOG part is unused and in its original packaging.
Return procedure for 74FCT3244SOG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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