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onsemi 74ACT241SJX
- Part No.:
- 74ACT241SJX
- Manufacturer:
- onsemi
- Package:
- 20-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
74ACT241SJX.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 20SOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,874
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Product details
Overview
74ACT241SJX from Fairchild Semiconductor is an octal non-inverting buffer/line driver with dual 3-STATE outputs, TTL-compatible inputs, ±24mA output drive, and operation over 4.5V–5.5V supply. It serves as a memory address or clock driver in bus-oriented systems requiring high-density PCB layout.
For engineers reviewing the 74ACT241SJX datasheet, pinout, applications, or equivalent options, key selection criteria include TTL input compatibility, 3-STATE enable control per half-bank, propagation delay under 10ns at 5V, and SOIC-20 (M20D) package compatibility with JEDEC EIAJ TYPE II standards.
Technical Context
The 74ACT241SJX implements two independent 4-bit non-inverting buffers, each controlled by its own active-HIGH 3-STATE enable (OE1/OE2). Its ACT logic family ensures TTL-level input thresholds (VIH = 2.0V, VIL = 0.8V at VCC = 4.5–5.5V), enabling direct interfacing with legacy TTL sources without level shifting.
Each output delivers ±24mA sink/source capability into 50pF loads, supporting robust bus driving. Propagation delays (tPLH/tPHL ≤ 9.0ns max at TA = –40°C to +85°C, CL = 50pF, VCC = 5V) and fast enable/disable timing (tPZH/tPHZ ≤ 10.0ns max) ensure reliable high-speed data and control path buffering in synchronous digital systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | ACT - TTL-compatible inputs, CMOS outputs, 4.5–5.5V operation |
| Output Drive | ±24mA - drives standard 50pF bus loads without external buffers |
| Propagation Delay | ≤9.0ns - ensures sub-100MHz timing margin for address/data paths |
| 3-STATE Enable | Dual OE (OE1/OE2) - independent control of I0–I3/O0–O3 and I4–I7/O4–O7 banks |
| Input Thresholds | VIH = 2.0V, VIL = 0.8V - interoperable with 5V TTL logic families |
| Quiescent ICC | ≤40µA - low static power for always-on system control functions |
| Operating Temp | –40°C to +85°C - qualified for industrial ambient environments |
Pinout & Package
74ACT241SJX is housed in a 20-lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm wide (Package Number M20D), with gull-wing leads and standard JEDEC pin spacing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 6, 10, 11, 13, 15 | Inputs (I0–I7) | Non-inverting data inputs; accept TTL-compatible logic levels |
| 3, 5, 7, 9 | OE2 bank enable (OE2) | Active-HIGH enable for outputs O4–O7; controls 4-bit segment independently |
| 12, 14, 16, 18 | OE1 bank enable (OE1) | Active-HIGH enable for outputs O0–O3; enables/disables first 4-bit segment |
| 8 | GND | Ground reference for all logic and output stages |
| 20 | VCC | +4.5V to +5.5V supply for logic core and output drivers |
| 19, 17, 15, 13, 11, 9, 7, 5 | Outputs (O0–O7) | 3-STATE CMOS outputs; high-impedance when respective OE is LOW |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 3-STATE enables | OE1 and OE2 allow segmented bus arbitration - e.g., split address/data lanes or interleaved memory banks |
| TTL-compatible inputs | Eliminates need for level translators when interfacing with 74LS/74F logic or microcontroller GPIOs operating at 5V TTL |
| ±24mA output drive | Directly drives multiple LS-TTL loads (up to 10) or 50pF transmission lines without fanout buffers |
| Low ICC and IOZ | Reduces system standby current and leakage-induced bus contention in powered-down subsystems |
| Industrial temperature range | Validated operation from –40°C to +85°C supports deployment in factory automation and telecom infrastructure |
Applications
| Memory Address Buffering | Clock Distribution |
|---|---|
Use Scenario: Driving 16-bit address bus from microcontroller to SRAM or EPROM in embedded control systems. IC Role / Device Role / Timing Role: Non-inverting octal buffer isolating MCU address pins from capacitive bus load; dual OE allows dynamic bank selection. Use Value: Prevents address skew and timing violations by maintaining <9ns propagation delay while sourcing/sinking ±24mA per line. | Use Scenario: Distributing a master system clock to multiple peripheral ICs on a shared board. IC Role / Device Role / Timing Role: Low-skew clock buffer with 3-STATE capability for hot-swap or power-gated clock domains. Use Value: Enables clean clock gating via OE control without signal reflection, leveraging matched tPLH/tPHL and <10ns enable time. |
| Bus Transceiver Interface | Legacy System Glue Logic |
Use Scenario: Bidirectional data bus isolation between CPU and peripheral ASIC in industrial PLC backplane. IC Role / Device Role / Timing Role: Unidirectional line driver acting as one side of a split transceiver pair; OE-controlled direction handshaking. Use Value: Provides 24mA drive strength and TTL-compatible inputs to match legacy 8086/80C188 bus timing requirements. | Use Scenario: Interfacing modern FPGA I/O banks (5V-tolerant) to legacy 74LS-based control logic in test equipment. IC Role / Device Role / Timing Role: Level-adapting buffer translating FPGA CMOS outputs to TTL-compatible inputs for downstream logic. Use Value: Eliminates external resistors or translators using native VIH/VIL thresholds aligned with 74LS specifications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ACT241DWR | Texas Instruments version in SOIC-20 (same pinout); identical AC/ACT specs but different ICC test conditions (ICCT = 1.5mA max vs. Fairchild's 40µA quiescent) | Higher dynamic ICC may impact low-power sleep modes; otherwise functionally interchangeable in 5V bus systems | Select SN74ACT241DWR only if TI supply chain preference or dual-sourcing strategy applies; verify thermal derating in high-density layouts. |
| 74LCX241MTCX | Lower-voltage family (2.0–3.6V); LVTTL-compatible inputs; not 5V-tolerant; TSSOP-20 package | Requires level translation for 5V systems; unsuitable for direct replacement where VCC = 5V or TTL input drive is required | Choose 74LCX241MTCX only for new 3.3V designs targeting lower power and smaller footprint - not for drop-in 74ACT241SJX replacement. |
Compared with SN74ACT241DWR and 74LCX241MTCX, the 74ACT241SJX uniquely combines TTL input compatibility, 5V operation, low quiescent ICC, and SOIC-20 packaging - making it optimal for industrial upgrades of legacy 5V logic systems where pinout, voltage, and timing must remain unchanged.
Availability
74ACT241SJX is available at Aetrix Electronics and suitable for memory address buffering, clock distribution, bus interface, and legacy logic interfacing requiring stable component supply across industrial design cycles.
Supply support for 74ACT241SJX 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
Fairchild Semiconductor was a U.S.-based semiconductor company specializing in analog and mixed-signal ICs, acquired by ON Semiconductor in 2016; its legacy logic portfolio remains widely deployed in industrial and automotive systems.
The 74ACT241SJX belongs to Fairchild's ACT (Advanced CMOS TTL-compatible) logic family, designed specifically for upgrading 74LS/74F systems with improved speed, drive strength, and noise immunity while preserving pinout and voltage compatibility.
FAQ
What is the supply voltage range for the 74ACT241SJX?
The 74ACT241SJX operates over a strict 4.5V to 5.5V supply range, as defined in its Recommended Operating Conditions. This range ensures TTL-compatible input thresholds (VIH = 2.0V, VIL = 0.8V) and full ±24mA output drive capability. Operation outside this window - including at 3.3V - is not supported and may result in undefined logic behavior or degraded timing margins.
Does the 74ACT241SJX support independent 3-STATE control for each output?
No, the 74ACT241SJX does not provide per-output 3-STATE control. It features two group enables: OE1 controls outputs O0–O3, and OE2 controls outputs O4–O7. Both enables are active-HIGH and operate independently, allowing segmentation of the octal output bank - useful for memory bank selection or partial bus isolation - but not individual pin control.
What package type is used for the 74ACT241SJX?
The 74ACT241SJX uses a 20-lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm wide (Package Number M20D). This surface-mount package has gull-wing leads, 1.27mm pitch, and complies with JEDEC standards for automated assembly. It is distinct from the SOIC-20 (M20B) and TSSOP-20 (MTC20) variants of the same device family.
Can the 74ACT241SJX be used with 3.3V logic inputs?
No, the 74ACT241SJX is not guaranteed to recognize 3.3V logic HIGH levels reliably. Its VIH minimum is 2.0V at VCC = 5V, but its input structure is optimized for TTL thresholds - meaning a 3.3V signal may fall below the guaranteed switching point under process/voltage/temperature variation. For 3.3V systems, use the 74AC241 or 74LCX241 families instead.
What is the maximum propagation delay of the 74ACT241SJX at 5V?
The maximum propagation delay (tPLH and tPHL) for the 74ACT241SJX is 9.0ns at VCC = 5V, TA = –40°C to +85°C, and CL = 50pF, per the AC Electrical Characteristics table. This value applies to both rising and falling edge transitions and ensures timing compliance in systems with clock periods down to ~100MHz when used in critical data paths.
74ACT241SJX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74ACT
- Package/Case:
- 20-SOIC (0.209", 5.30mm 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:
- 24mA, 24mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOP
74ACT241SJX FAQ
1.How can I place an order for 74ACT241SJX through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ACT241SJX 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 74ACT241SJX reliable?
The price and inventory of 74ACT241SJX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ACT241SJX is usually 5 days.
3.What payment methods are accepted for 74ACT241SJX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ACT241SJX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ACT241SJX?
74ACT241SJX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ACT241SJX 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 74ACT241SJX?
For technical support, including 74ACT241SJX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ACT241SJX requirements.
6.How does Aetrix verify that 74ACT241SJX is sourced from the original manufacturer or authorized distributors?
All 74ACT241SJX 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 74ACT241SJX meets industry standards.
7.What is the process for return or replacement of 74ACT241SJX?
All 74ACT241SJX units undergo pre-shipment inspection (PSI). If there is an issue with 74ACT241SJX, 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 74ACT241SJX part is unused and in its original packaging.
Return procedure for 74ACT241SJX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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