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onsemi 74ACT241MTCX
- Part No.:
- 74ACT241MTCX
- Manufacturer:
- onsemi
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74ACT241MTCX.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,870
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Product details
Overview
74ACT241MTCX 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 74ACT241MTCX datasheet, pinout, applications, or equivalent options, key selection criteria include TTL input compatibility, 3-STATE dual-enable control, 7ns typical propagation delay at 5V, and TSSOP-20 package thermal and routing advantages.
Technical Context
The 74ACT241MTCX implements two independent 4-bit non-inverting buffers, each controlled by a dedicated active-HIGH 3-STATE enable (OE1/OE2). Its ACT logic family ensures TTL-level input thresholds (VIH = 2.0V min, VIL = 0.8V max at VCC = 4.5–5.5V) while delivering CMOS-level noise immunity and rail-to-rail output swing.
Propagation delays are tightly specified: tPLH/tPHL ≤ 10.0ns (max, CL = 50pF, TA = –40°C to +85°C), with output enable/disable times (tPZH/tPLZ/tPHZ/tPLZ) ≤ 11.5ns. ICC remains ≤ 40µA (quiescent) and ICCT ≤ 1.5mA per input under switching conditions.
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 heavy capacitive loads or multiple TTL inputs without external buffering |
| Propagation Delay | ≤10.0ns - supports >50MHz bus clocking with timing margin |
| 3-STATE Enable | Dual OE (OE1/OE2) - enables independent control of two 4-bit groups for bus arbitration |
| Input Thresholds | VIH = 2.0V min, VIL = 0.8V max - interoperable with standard TTL logic families |
| Package | TSSOP-20 (MTC20) - 4.4mm width, JEDEC MO-153, suitable for high-density routing |
| Operating Temp | –40°C to +85°C - qualified for industrial environment deployment |
Pinout & Package
74ACT241MTCX is housed in a 20-pin Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153 compliant, 4.4mm body width, 0.65mm lead pitch, with exposed pad optional per manufacturer variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 6, 13, 15, 17, 19 | I0–I7 (Inputs) | Non-inverting data inputs; accept TTL-compatible logic levels |
| 3, 5, 7, 9 | OE2 (Enable Group 2) | Active-HIGH enable for outputs O0–O3; controls bus segment isolation |
| 12, 14, 16, 18 | OE1 (Enable Group 1) | Active-HIGH enable for outputs O4–O7; enables independent bus partitioning |
| 11, 10, 9, 8, 20, 19, 18, 17 | O0–O7 (Outputs) | 3-STATE non-inverting outputs; high-impedance when respective OE = LOW |
| 10 | GND | Ground reference for all I/O and internal circuitry |
| 20 | VCC | Positive supply (4.5–5.5V); powers internal logic and output drivers |
Key Features
| Feature | Design Value |
|---|---|
| TTL-Compatible Inputs | Ensures seamless interface with legacy 74LS/74F logic without level-shifting circuitry |
| Dual Independent 3-STATE Enables | Allows dynamic segmentation of 8-bit data paths-e.g., separate control of address vs. data nibbles |
| Low ICC and IOZ | Quiescent current ≤40µA and 3-STATE leakage ≤±2.5µA reduce system standby power |
| High-Speed AC Performance | Propagation delay ≤10ns and enable/disable times ≤11.5ns support 50+ MHz synchronous bus operation |
| Pb-Free Packaging | Complies with JEDEC J-STD-020B; RoHS-compliant for industrial and commercial assembly |
Applications
| Memory Address Buffering | Microprocessor Bus Interface |
|---|---|
Use Scenario: Driving 16-bit address lines from a microcontroller to SRAM or flash memory with fanout >10. IC Role / Device Role / Timing Role: Non-inverting octal buffer providing level translation and current gain between MCU GPIO and memory address pins. Use Value: Eliminates need for discrete transistor arrays; maintains signal integrity across 15cm traces at 20MHz due to 24mA drive capability. | Use Scenario: Isolating bidirectional data bus segments during DMA transfers in an 8-bit embedded controller system. IC Role / Device Role / Timing Role: Dual-enable 3-STATE line driver enabling time-multiplexed control of upper/lower data nibbles. Use Value: Prevents bus contention via independent OE1/OE2 control; meets 10ns setup/hold timing with ≤10ns propagation delay. |
| Industrial PLC I/O Expansion | Legacy System Clock Distribution |
Use Scenario: Interfacing a modern ARM-based controller to legacy 5V TTL peripheral modules in programmable logic controllers. IC Role / Device Role / Timing Role: Level-adapting buffer translating 3.3V GPIO outputs to robust 5V TTL-compatible signals. Use Value: TTL input thresholds (0.8V/2.0V) ensure noise-immune recognition of marginal logic levels from aging backplane wiring. | Use Scenario: Distributing a 25MHz system clock to multiple synchronous peripherals (ADC, DAC, UART) with matched skew. IC Role / Device Role / Timing Role: Low-skew, non-inverting clock driver with parallel output structure and tight delay matching. Use Value: Propagation delay variation <1ns between outputs minimizes clock skew across 8 destinations. |
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 |
|---|---|---|---|
| SN74ACT241DBR | TSSOP-20 package, identical AC/ACT specs, TI-branded; same pinout and DC/AC characteristics | No functional deviation; validated for drop-in use in existing 74ACT241MTCX layouts | Select when sourcing from TI's authorized channel or requiring TI-specific quality documentation |
| 74VHC241MTCX | Higher VCC range (2–5.5V), lower drive (±8mA), no TTL input compatibility; uses CMOS input thresholds | Not suitable for direct TTL interfacing; requires input conditioning if driving 74LS logic | Choose only for mixed-voltage (3.3V/5V) systems where TTL compatibility is unnecessary and lower power is prioritized |
Compared with SN74ACT241DBR and 74VHC241MTCX, the 74ACT241MTCX uniquely delivers TTL-compatible inputs with ±24mA drive in a Pb-free TSSOP-20, making it optimal for industrial retrofits and bus-isolation designs requiring guaranteed 5V logic interoperability.
Availability
74ACT241MTCX is available at Aetrix Electronics and suitable for memory address buffering, microprocessor bus interfacing, and industrial I/O expansion requiring stable component supply and long-term industrial temperature support.
Supply support for 74ACT241MTCX 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 systems.
The 74ACT241MTCX belongs to Fairchild's ACT advanced CMOS logic family, designed specifically for high-speed, low-power, TTL-compatible bus interface and memory addressing in industrial and computing applications.
FAQ
What is the supply voltage range for the 74ACT241MTCX?
The 74ACT241MTCX 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 and full ±24mA output drive capability. Operation outside this window may result in undefined logic behavior or reduced drive strength. The 74ACT241MTCX is not rated for 3.3V-only or wide-range operation like AC-series variants.
Does the 74ACT241MTCX support true bidirectional data flow?
No, the 74ACT241MTCX is a unidirectional non-inverting buffer with fixed input-to-output signal path (I0→O0, ..., I7→O7). It lacks internal direction control or bus transceiver functionality. Bidirectional operation requires external control logic and complementary devices; the 74ACT241MTCX serves only as a one-way driver with 3-STATE outputs for bus release.
What is the maximum output sink/source current specification for the 74ACT241MTCX?
The 74ACT241MTCX guarantees ±24mA DC output drive per pin under recommended operating conditions (VCC = 4.5–5.5V, TA = –40°C to +85°C), verified per DC Electrical Characteristics table for ACT devices. This rating applies to both sourcing (VOH at IOH = –24mA) and sinking (VOL at IOL = 24mA), ensuring reliable interfacing with multiple TTL loads or moderate capacitive buses.
How are the two 3-STATE enable inputs (OE1 and OE2) assigned to outputs on the 74ACT241MTCX?
OE1 (pins 12, 14, 16, 18) controls outputs O4–O7; OE2 (pins 3, 5, 7, 9) controls outputs O0–O3. This split enables independent gating of two 4-bit groups-e.g., upper/lower byte of an address bus-without requiring external logic. Both enables are active-HIGH; pulling either low places its associated outputs in high-impedance state.
Is the 74ACT241MTCX pin-compatible with the 74AC241MTCX?
Yes, the 74ACT241MTCX and 74AC241MTCX share identical pinout, package (TSSOP-20), and logic function. However, they differ electrically: the 74ACT241MTCX has TTL-compatible inputs (VIH = 2.0V min), while the 74AC241MTCX uses CMOS thresholds (VIH = 3.15V min at 4.5V). Swapping them requires verifying input source compatibility to avoid logic misreads.
74ACT241MTCX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74ACT
- Package/Case:
- 20-TSSOP (0.173", 4.40mm 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-TSSOP
74ACT241MTCX FAQ
1.How can I place an order for 74ACT241MTCX through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ACT241MTCX 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 74ACT241MTCX reliable?
The price and inventory of 74ACT241MTCX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ACT241MTCX is usually 5 days.
3.What payment methods are accepted for 74ACT241MTCX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ACT241MTCX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ACT241MTCX?
74ACT241MTCX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ACT241MTCX 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 74ACT241MTCX?
For technical support, including 74ACT241MTCX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ACT241MTCX requirements.
6.How does Aetrix verify that 74ACT241MTCX is sourced from the original manufacturer or authorized distributors?
All 74ACT241MTCX 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 74ACT241MTCX meets industry standards.
7.What is the process for return or replacement of 74ACT241MTCX?
All 74ACT241MTCX units undergo pre-shipment inspection (PSI). If there is an issue with 74ACT241MTCX, 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 74ACT241MTCX part is unused and in its original packaging.
Return procedure for 74ACT241MTCX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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