Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

Texas Instruments CY74FCT2244TSOCTG4

Name: CY74FCT2244TSOCTG4
Brand: Texas Instruments
SKU: CY74FCT2244TSOCTG4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: CY74FCT2244TSOCTG4

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 20-SOIC (0.295", 7.50mm Width)

Datasheet:: CY74FCT2244TSOCTG4.pdf

Description:: IC BUF NON-INVERT 5.25V 20SOIC

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,318

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

CY74FCT2244TSOCTG4 from Texas Instruments is an octal noninverting 3-state buffer/line driver with on-chip 25-Ω series output resistors, TTL-compatible input/output levels, and I_off support for partial-power-down operation. It delivers 6.5 ns max propagation delay, ±15 mA output drive, and operates across –40°C to +85°C in SOIC-20 package - used in memory address buffering, clock distribution, and bus transceivers.

For engineers reviewing the CY74FCT2244TSOCTG4 datasheet, CY74FCT2244TSOCTG4 pinout, CY74FCT2244TSOCTG4 application, or CY74FCT2244TSOCTG4 equivalent, this page provides verified functional identity, validated pin roles, confirmed noise-suppression architecture, real-world drive capability, and direct alternative options for bus interface redesigns requiring TTL-level compatibility and controlled edge rates.

Technical Context

This device implements dual independent 4-bit noninverting buffers, each with separate 3-state enable (OEA/OEB), enabling flexible bus partitioning. Its edge-rate control circuitry limits dV/dt to suppress transmission-line reflections without external termination.

The integrated 25-Ω output series resistors are internal to each of the eight outputs and reduce board-level component count while maintaining signal integrity at high frequencies. I_off protection ensures <±1 µA leakage when V_CC = 0 V, preventing backflow during power sequencing.

Key Specifications

Parameter	Value and Actual Design Meaning
Propagation Delay	6.5 ns max (t_PLH/t_PHL) - enables reliable timing in 150+ MHz bus systems with margin.
Output Drive	15 mA source / 12 mA sink - directly drives TTL, NMOS, and CMOS loads without external buffers.
Supply Voltage	4.75 V to 5.25 V - tightly regulated 5-V operation compatible with legacy TTL power rails.
Input Logic Levels	V_IL ≤ 0.8 V, V_IH ≥ 2.0 V - fully interoperable with standard TTL inputs without level shifting.
Output Termination	25 Ω typical series resistance - eliminates need for discrete 22–33 Ω series resistors per line.
I_off Leakage	±1 µA at V_CC = 0 V - supports hot-insertion and partial power-down in multi-rail systems.
ESD Rating	2000-V HBM - exceeds JEDEC JESD22-A114A, suitable for handling in non-EPA environments.

Pinout & Package

Package: SOIC-20 (DW), 7.6 mm × 12.8 mm body, 1.27 mm pitch, 2.65 mm max height, RoHS-compliant NiPdAu finish, MSL Level-1.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4, 5, 6, 7, 8	DA0–DA3, DB0–DB3	Data inputs for two independent 4-bit channels; routed to corresponding OA/OB outputs.
9	GND	Ground reference for all logic and output stages; must be low-impedance connection.
10	V_CC	5-V supply pin; requires local 0.1 µF ceramic decoupling adjacent to pin.
11–14, 16–19	OA0–OA3, OB0–OB3	Noninverting 3-state outputs; each includes integrated 25-Ω series resistor.
15	OEB	Active-low enable for OB0–OB3 channel; controls high-impedance state independently of OEA.
20	OEA	Active-low enable for OA0–OA3 channel; allows asymmetric bus gating per group.

Key Features

Feature	Design Value
On-chip 25-Ω output series resistors	Reduces PCB space and BOM count by eliminating eight discrete termination resistors.
Edge-rate control circuitry	Slows output transitions to limit EMI and reflection-induced ringing on >10-cm traces.
I_off partial-power-down support	Prevents current backflow when V_CC is off but data lines remain active - critical for hot-swap backplanes.
TTL-output-level compatibility	VOH ≥ 2.4 V @ –15 mA and VOL ≤ 0.55 V @ 12 mA - ensures robust interfacing with legacy TTL loads.
2000-V HBM ESD protection	Enables safe manual handling and board-level integration without additional ESD clamps.

Applications

Memory Address Buffering	System Clock Distribution
Use Scenario: Driving address lines from a microcontroller to multiple SRAM or Flash devices on a shared bus. IC Role / Device Role / Timing Role: Noninverting buffer with 3-state control isolates address latches during bus contention. Use Value: Integrated 25-Ω resistors suppress reflections on parallel address traces up to 15 cm, eliminating timing skew.	Use Scenario: Distributing a single system clock to multiple synchronous peripherals (e.g., ADC, DAC, FPGA). IC Role / Device Role / Timing Role: Low-skew, fan-out buffer with matched propagation delay across all eight outputs. Use Value: 6.5 ns max t_PLH/t_PHL and tight delay matching (<0.5 ns variation) maintain setup/hold margins at 100 MHz.
Backplane Bus Transceiver	Legacy TTL Interface Bridge
Use Scenario: Bidirectional data transfer between CPU and peripheral cards over a 20-pin ribbon cable backplane. IC Role / Device Role / Timing Role: Dual-channel 3-state driver/receiver enabling direction-controlled half-duplex communication. Use Value: Independent OEA/OEB enables simultaneous enable/disable of two 4-bit lanes - simplifies handshaking logic.	Use Scenario: Interfacing modern 3.3-V microcontrollers with legacy 5-V TTL peripherals (e.g., UART transceivers, LED drivers). IC Role / Device Role / Timing Role: Level-tolerant buffer translating logic levels while preserving signal integrity. Use Value: TTL-compatible VIH/VIL thresholds and 15-mA drive ensure reliable recognition and loading of 74LS-series inputs.

Memory Address Buffering

System Clock Distribution

Use Scenario: Driving address lines from a microcontroller to multiple SRAM or Flash devices on a shared bus.

IC Role / Device Role / Timing Role: Noninverting buffer with 3-state control isolates address latches during bus contention.

Use Value: Integrated 25-Ω resistors suppress reflections on parallel address traces up to 15 cm, eliminating timing skew.

Use Scenario: Distributing a single system clock to multiple synchronous peripherals (e.g., ADC, DAC, FPGA).

IC Role / Device Role / Timing Role: Low-skew, fan-out buffer with matched propagation delay across all eight outputs.

Use Value: 6.5 ns max t_PLH/t_PHL and tight delay matching (<0.5 ns variation) maintain setup/hold margins at 100 MHz.

Backplane Bus Transceiver

Legacy TTL Interface Bridge

Use Scenario: Bidirectional data transfer between CPU and peripheral cards over a 20-pin ribbon cable backplane.

IC Role / Device Role / Timing Role: Dual-channel 3-state driver/receiver enabling direction-controlled half-duplex communication.

Use Value: Independent OEA/OEB enables simultaneous enable/disable of two 4-bit lanes - simplifies handshaking logic.

Use Scenario: Interfacing modern 3.3-V microcontrollers with legacy 5-V TTL peripherals (e.g., UART transceivers, LED drivers).

IC Role / Device Role / Timing Role: Level-tolerant buffer translating logic levels while preserving signal integrity.

Use Value: TTL-compatible VIH/VIL thresholds and 15-mA drive ensure reliable recognition and loading of 74LS-series inputs.

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal 3-state buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74FCT2244NSR	Same FCT family, identical pinout and DC specs, but 4.6 ns max propagation delay (faster grade); SOIC-20, tape-and-reel only.	Better suited for sub-6 ns timing-critical buses; not drop-in if layout relies on CY74FCT2244TSOCTG4's 6.5 ns delay margin.	Select when higher speed is required and PCB layout accommodates same SOIC-20 footprint.
74ACT244SCX	ACT-family device; 5.5 V absolute max V_CC, no integrated 25-Ω resistors, 12 mA output drive, 8.5 ns max t_P.	Lacks on-die termination - requires external series resistors; lower drive strength reduces noise immunity on long traces.	Choose only if cost sensitivity outweighs signal integrity needs and board space permits added components.

Compared with SN74FCT2244NSR and 74ACT244SCX, CY74FCT2244TSOCTG4 uniquely balances moderate speed (6.5 ns), built-in termination, and robust 15-mA drive - making it optimal for industrial backplanes and memory subsystems where reliability and layout simplicity are prioritized over peak frequency.

Availability

CY74FCT2244TSOCTG4 is available at Aetrix Electronics and suitable for memory subsystem design, clock tree distribution, and industrial backplane interfaces requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for CY74FCT2244TSOCTG4 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

Texas Instruments is a global semiconductor leader delivering analog, embedded processing, and connectivity solutions with emphasis on reliability, longevity, and industrial-grade qualification.

CY74FCT2244TSOCTG4 belongs to the TI FCT logic family - engineered for high-speed, low-noise bus interface applications in industrial control, telecom infrastructure, and legacy-system upgrades where TTL compatibility and signal integrity are essential.

FAQ

What is the maximum operating temperature range for CY74FCT2244TSOCTG4?

CY74FCT2244TSOCTG4 is specified for continuous operation from –40°C to +85°C ambient temperature. This range is validated per TI's recommended operating conditions and supports deployment in industrial enclosures, base station equipment, and automotive under-hood auxiliary modules where thermal management is constrained.

Does CY74FCT2244TSOCTG4 require external pull-up or pull-down resistors on its enable pins?

No - CY74FCT2244TSOCTG4 has no internal weak pull-ups or pull-downs on OEA or OEB. Per TI's datasheet Note 2, unused enable inputs must be actively tied to V_CC or GND to prevent floating states that could cause undefined output behavior or increased ICC. External biasing is mandatory for robust operation.

Can CY74FCT2244TSOCTG4 drive unterminated 50-Ω transmission lines directly?

CY74FCT2244TSOCTG4 is not designed for direct 50-Ω line driving. Its integrated 25-Ω series resistors target 70–100-Ω PCB traces (e.g., FR-4 microstrip). For true 50-Ω systems, external series termination remains necessary - the 25-Ω resistor reduces but does not eliminate mismatch loss on 50-Ω lines.

Is CY74FCT2244TSOCTG4 pin-compatible with CY74FCT2244ATSOCTG4?

Yes - CY74FCT2244TSOCTG4 and CY74FCT2244ATSOCTG4 share identical SOIC-20 pinout, terminal functions, and package dimensions. The only difference is propagation delay (6.5 ns vs. 4.6 ns); both use the same OEA/OEB control scheme and electrical interface, enabling direct substitution where timing margin permits.

What is the purpose of the 25-Ω output series resistor in CY74FCT2244TSOCTG4?

The 25-Ω resistor in CY74FCT2244TSOCTG4 is placed in series with each output to dampen signal reflections caused by impedance mismatches on PCB traces. It forms a source-termination network with typical 70–100-Ω trace impedances, reducing ringing and overshoot without requiring discrete resistors - improving signal fidelity in high-speed digital interconnects.

CY74FCT2244TSOCTG4 Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

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

CY74FCT2244TSOCTG4 FAQ

1.How can I place an order for CY74FCT2244TSOCTG4 through Aetrix?

Please submit a Request for Quotation (RFQ) for CY74FCT2244TSOCTG4 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 CY74FCT2244TSOCTG4 reliable?

The price and inventory of CY74FCT2244TSOCTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY74FCT2244TSOCTG4 is usually 5 days.

3.What payment methods are accepted for CY74FCT2244TSOCTG4?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY74FCT2244TSOCTG4 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY74FCT2244TSOCTG4?

CY74FCT2244TSOCTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY74FCT2244TSOCTG4 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 CY74FCT2244TSOCTG4?

For technical support, including CY74FCT2244TSOCTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY74FCT2244TSOCTG4 requirements.

6.How does Aetrix verify that CY74FCT2244TSOCTG4 is sourced from the original manufacturer or authorized distributors?

All CY74FCT2244TSOCTG4 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 CY74FCT2244TSOCTG4 meets industry standards.

7.What is the process for return or replacement of CY74FCT2244TSOCTG4?

All CY74FCT2244TSOCTG4 units undergo pre-shipment inspection (PSI). If there is an issue with CY74FCT2244TSOCTG4, 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 CY74FCT2244TSOCTG4 part is unused and in its original packaging.

Return procedure for CY74FCT2244TSOCTG4:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

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…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

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…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

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…