My Inquiry
My Account
Diodes Incorporated PI74FCT244CTSE
- Part No.:
- PI74FCT244CTSE
- Manufacturer:
- Diodes Incorporated
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
PI74FCT244CTSE.pdf
- Description:
- IC BUF NON-INVERT 5.25V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,668
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PI74FCT244CTSE from Pericom Semiconductor is a fast CMOS non-inverting octal buffer/line driver with dual 3-state output enables (OEA, OEB), TTL-compatible I/O levels, 25Ω series output termination, and industrial temperature range (–40°C to +85°C). It delivers 64mA sink current per output, 3.6ns max propagation delay (CL = 50pF), and <500μA quiescent ICC, enabling high-speed bus driving in memory and address routing applications.
For engineers reviewing the PI74FCT244CTSE datasheet, PI74FCT244CTSE pinout, PI74FCT244CTSE application, or PI74FCT244CTSE equivalent, key selection criteria include output drive strength (64mA), integrated 25Ω series termination, dual active-low/high enable logic, low ground bounce, and SOIC-20 package compatibility with legacy 5V systems.
Technical Context
This device implements two independent 4-bit non-inverting buffer sections, each controlled by separate 3-state enables: OEA (active-low) for outputs O0–O3, and OEB (active-high) for outputs O4–O7. All inputs accept TTL-level signals and feature hysteresis for noise immunity.
Each output integrates a 25Ω series resistor to suppress transmission-line reflections-eliminating external termination resistors in point-to-point or short-bus configurations. The architecture supports simultaneous bidirectional bus control when paired with complementary drivers like PI74FCT245.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 5.0V ±5% - compatible with standard 5V TTL/CMOS logic rails |
| VOH / VOL | ≥2.4V @ –15mA / ≤0.55V @ 64mA - ensures robust HIGH/LOW voltage margins under full load |
| tPLH / tPHL | 1.5–3.6ns (max) - enables >270MHz data rate in 50pF load conditions |
| IOL / IOH | 64mA sink / –15mA source - drives heavy capacitive loads without external buffers |
| ICC Quiescent | ≤500μA - minimizes standby power in always-on system interfaces |
| Input Hysteresis | 200mV - rejects up to 200mV of input noise on address/control lines |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded and telecom equipment |
Pinout & Package
PI74FCT244CTSE is housed in a Pb-free & Green 20-pin 300-mil wide plastic SOIC (Small Outline Integrated Circuit) package, compliant with JEDEC MS-012AC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OEA) | Active-low 3-state enable | Controls outputs O0–O3; LOW enables, HIGH places in high-Z |
| 2–9 (D0–D7) | Buffer inputs | Non-inverting data inputs for corresponding outputs O0–O7 |
| 10 (GND) | Ground reference | Primary return path for all I/O and supply currents |
| 11 (VCC) | Power supply | +5V supply rail; decoupling capacitor required at pin |
| 12–19 (O0–O7) | Buffer outputs | Non-inverting outputs with integrated 25Ω series termination |
| 20 (OEB) | Active-high 3-state enable | Controls outputs O4–O7; HIGH enables, LOW places in high-Z |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 25Ω output series resistor | Eliminates need for discrete termination resistors on PCB traces, reducing BOM count and layout area |
| Dual independent 3-state controls | OEA (pins 1, active-low) and OEB (pin 20, active-high) allow asymmetric bus gating for partial-width data transfers |
| TTL-compatible input thresholds | VIH = 2.0V min, VIL = 0.8V max - interoperable with legacy 5V microcontrollers and FPGAs without level shifters |
| Low ground bounce | Controlled edge rates and internal current limiting reduce simultaneous switching noise in dense bus environments |
| Hysteresis on all inputs | 200mV hysteresis window prevents chatter on slow-rising or noisy control signals such as reset or chip select |
Applications
| Memory Address Buffering | System Bus Driver |
|---|---|
|
Use Scenario: Driving 16-bit address bus from microcontroller to SRAM or EPROM in industrial PLCs. IC Role / Device Role / Timing Role: Non-inverting octal buffer with dual enable logic isolates MCU address pins from bus capacitance and enables selective memory bank activation. Use Value: 64mA output drive sustains signal integrity across 10cm traces; 3.6ns propagation delay supports >200MHz address setup timing. |
Use Scenario: Interfacing FPGA I/O banks to legacy 5V peripheral buses (e.g., ISA, PC/104). IC Role / Device Role / Timing Role: Level-shifting and fanout buffer that translates 3.3V FPGA outputs to 5V TTL while providing 25Ω source termination. Use Value: Integrated series resistance eliminates stub reflections on parallel bus segments; dual enables support dynamic bus arbitration. |
| Industrial Control Backplane | Legacy CPU Expansion Interface |
|
Use Scenario: Signal conditioning and isolation between ARM-based controller and 5V I/O modules over 20cm backplane traces. IC Role / Device Role / Timing Role: High-drive buffer with hysteresis protects against EMI-induced glitches on long control lines (e.g., ENABLE, RESET). Use Value: 200mV input hysteresis rejects common-mode noise; –40°C to +85°C rating ensures reliability in uncooled enclosures. |
Use Scenario: Adding peripheral expansion capability to vintage x86 SBCs using ISA-style connectors. IC Role / Device Role / Timing Role: Octal line driver replicating original 74F244 functionality with lower power and improved noise margin. Use Value: Pinout-compatible replacement for obsolete bipolar 244s; 500μA quiescent current reduces thermal load in space-constrained slots. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar non-inverting octal buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74F244N | Bipolar TTL technology; no integrated 25Ω termination; higher ICC (20mA typical); no input hysteresis | Lacks reflection suppression and noise immunity; requires external termination and decoupling | Select only when strict pin-for-pin legacy replacement is required and board layout cannot accommodate added resistors |
| 74LCX244MTCX | Lower VCC range (2.0–3.6V); CMOS I/O; no 25Ω termination; 3.3V-only operation | Not 5V-tolerant; incompatible with 5V buses without level translation | Prefer for new 3.3V designs where power efficiency and speed outweigh 5V interoperability needs |
Compared with SN74F244N and 74LCX244MTCX, PI74FCT244CTSE uniquely combines 5V TTL compatibility, integrated termination, hysteresis, and sub-1mA quiescent current-making it optimal for retrofitting or upgrading industrial 5V bus systems without redesigning trace impedance or adding components.
Availability
PI74FCT244CTSE is available at Aetrix Electronics and suitable for memory address buffering, system bus driving, industrial backplane interfacing, and legacy CPU expansion requiring stable component supply and long-term manufacturability.
Supply support for PI74FCT244CTSE 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
Pericom Semiconductor was a fabless provider of high-speed interface and timing solutions, acquired by Diodes Incorporated in 2016; its legacy logic portfolio remains widely deployed in industrial and telecom infrastructure.
PI74FCT244CTSE belongs to the FCT2xxx family of Fast CMOS buffers designed specifically for 5V bus-driving applications demanding low noise, high drive, and drop-in compatibility with bipolar TTL logic.
FAQ
Is PI74FCT244CTSE pin-compatible with standard 74F244 devices?
Yes - PI74FCT244CTSE uses the same SOIC-20 pinout as industry-standard 74F244 and 74LS244 devices, including identical D0–D7, O0–O7, GND, VCC, and enable pin locations. This allows direct replacement without PCB modification.
Does the integrated 25Ω series resistor affect DC voltage levels?
No - the 25Ω resistor is placed in series with the output driver's pull-down/pull-up transistors and does not alter VOH or VOL specifications. Output voltage levels remain compliant with TTL standards (VOH ≥2.4V, VOL ≤0.55V) under rated load conditions.
Can OEA and OEB be tied together for single-enable operation?
Yes - connecting OEA (pin 1) and OEB (pin 20) through an inverter enables unified active-low control; tying them directly is not recommended due to conflicting logic polarities (OEA active-low, OEB active-high), which would cause undefined output states.
What is the maximum capacitive load this device can drive reliably?
PI74FCT244CTSE is characterized for CL = 50pF in switching specs, but its 64mA sink/source capability supports >100pF loads at reduced edge rates. For >70pF, use controlled-impedance routing and verify signal integrity via TDR or eye-diagram analysis.
PI74FCT244CTSE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74FCT
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- 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, 64mA
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
PI74FCT244CTSE FAQ
1.How can I place an order for PI74FCT244CTSE through Aetrix?
Please submit a Request for Quotation (RFQ) for PI74FCT244CTSE 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 PI74FCT244CTSE reliable?
The price and inventory of PI74FCT244CTSE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74FCT244CTSE is usually 5 days.
3.What payment methods are accepted for PI74FCT244CTSE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74FCT244CTSE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI74FCT244CTSE?
PI74FCT244CTSE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI74FCT244CTSE 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 PI74FCT244CTSE?
For technical support, including PI74FCT244CTSE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74FCT244CTSE requirements.
6.How does Aetrix verify that PI74FCT244CTSE is sourced from the original manufacturer or authorized distributors?
All PI74FCT244CTSE 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 PI74FCT244CTSE meets industry standards.
7.What is the process for return or replacement of PI74FCT244CTSE?
All PI74FCT244CTSE units undergo pre-shipment inspection (PSI). If there is an issue with PI74FCT244CTSE, 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 PI74FCT244CTSE part is unused and in its original packaging.
Return procedure for PI74FCT244CTSE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PI74FCT244CTSE Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
