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onsemi 74ACTQ16240MTD
- Part No.:
- 74ACTQ16240MTD
- Manufacturer:
- onsemi
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74ACTQ16240MTD.pdf
- Description:
- IC BUFF INVERT 5.5V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,198
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Product details
Overview
74ACTQ16240MTD from Fairchild Semiconductor is a 16-bit inverting buffer/line driver with 3-STATE outputs, designed for memory and address bus driving, clock distribution, and bidirectional bus interfacing. It features nibble-level control (four independent 4-bit groups), ±24 mA output drive capability, guaranteed pin-to-pin output skew ≤4.3 ns, and operates over −40°C to +85°C at 4.5–5.5 V supply.
For engineers reviewing the 74ACTQ16240MTD datasheet, pinout, applications, or equivalent options, key selection criteria include simultaneous switching noise immunity (VOLP ≤0.8 V, VOHP ≤VOH+1.5 V), dynamic input threshold margins (VIHD ≥2.0 V, VILD ≤0.8 V), and TSSOP-48 package compatibility with high-density PCB layouts.
Technical Context
The 74ACTQ16240MTD implements sixteen independent inverting buffers, each with active-low 3-STATE enable per nibble (OE1–OE4), enabling flexible 4-bit, 8-bit, or full 16-bit bus control. Its Quiet Series™ architecture incorporates GTO™ output control to suppress simultaneous switching noise during multi-output transitions.
It supports dual-load testing (50 pF and 250 pF), delivers guaranteed propagation delays as low as 2.7 ns (tPLH, CL = 50 pF), and maintains dynamic performance across temperature and voltage extremes - including tPLH ≤7.8 ns over −40°C to +85°C with 50 pF load and ≤13.8 ns with 250 pF load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | 16-bit inverting buffer with independent nibble-level 3-STATE control (OE1–OE4) |
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with standard TTL/CMOS 5 V systems |
| Output Drive | ±24 mA - sufficient to drive terminated transmission lines or multiple TTL inputs |
| Propagation Delay | 2.7 ns min / 7.8 ns max (CL = 50 pF, TA = −40°C to +85°C) - enables high-speed bus timing budgets |
| Pin Skew | ≤4.3 ns (tOST) - guarantees deterministic timing alignment across all 16 outputs |
| Input Thresholds | VIH = 2.0 V min, VIL = 0.8 V max - provides robust noise margin against ground bounce |
| Simultaneous Switching Noise | VOLP ≤0.8 V, VOHP ≤VOH+1.5 V - validated under worst-case 16-output toggle at 1 MHz |
Pinout & Package
74ACTQ16240MTD is housed in a 48-lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153 compliant, 6.1 mm wide, with 0.5 mm lead pitch and exposed thermal pad (not electrically connected). Pin assignments follow standard SSOP/TSSOP 48-pin numbering (1–48, counterclockwise from index mark).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OEn (OE1–OE4) | Active-low 3-STATE enable per nibble | Four independent controls allow selective 4-bit bus isolation without affecting other nibbles |
| I0–I15 | Buffer inputs | Direct logic inversion path; no internal latching or delay compensation |
| O0–O15 | Inverting buffered outputs | Drive-strength-matched outputs with guaranteed skew and quiet switching behavior |
| VCC, GND | Power and ground | Dual VCC/GND pairs (pins 24/25, 47/48) minimize supply impedance and reduce switching noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| FACT Quiet Series™ technology | Reduces simultaneous switching noise by controlling output transition timing via GTO™ circuitry |
| Guaranteed pin-to-pin output skew | ≤4.3 ns across all 16 outputs - critical for synchronous bus timing integrity |
| Nibble-selectable 3-STATE control | Four OE inputs (OE1–OE4) enable partial bus isolation without external logic |
| Dynamic input voltage thresholds | VIHD ≥2.0 V and VILD ≤0.8 V - verified under real-world simultaneous switching conditions |
| Multi-load AC characterization | Specified for both 50 pF and 250 pF loads - supports design validation across board trace lengths and fanout |
Applications
| Memory Address Buffering | High-Speed Clock Distribution |
|---|---|
Use Scenario: Driving 16-bit address buses between microcontrollers and SRAM/Flash devices in industrial controllers. IC Role / Device Role / Timing Role: Inverting buffer with 3-STATE control isolates address lines during bus contention or standby modes. Use Value: Guaranteed 2.7 ns propagation delay and ≤4.3 ns skew ensure setup/hold timing compliance across full address range. | Use Scenario: Distributing a single system clock to multiple synchronous peripherals (e.g., ADCs, DACs, FPGAs) on a dense PCB. IC Role / Device Role / Timing Role: Low-skew inverting line driver replicates and fans out clock signals while maintaining edge integrity. Use Value: Quiet Series™ noise suppression prevents clock jitter induced by simultaneous data switching on adjacent traces. |
| PCI/ISA Bus Transceiver Interface | Test Equipment Signal Conditioning |
Use Scenario: Bidirectional data buffering between legacy ISA bus peripherals and modern controller interfaces. IC Role / Device Role / Timing Role: Nibble-controlled 3-STATE driver/receiver manages direction and isolation per 4-bit segment of the data bus. Use Value: Independent OE1–OE4 allows partial bus arbitration without full bus reset or additional control logic. | Use Scenario: Level-shifting and noise-immune signal conditioning for digital pattern generators feeding DUTs in ATE systems. IC Role / Device Role / Timing Role: Inverting buffer with ±24 mA drive strengthens weak logic edges before transmission over long cables. Use Value: Validated VOLP ≤0.8 V and VOHP ≤VOH+1.5 V ensure clean signal edges despite heavy capacitive loading. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar inverting buffer/line driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ACT16240DGGR | TI part in 48-pin TSSOP; identical logic function and DC specs, but lacks Quiet Series™ noise characterization and GTO™ control | No published simultaneous switching noise limits (VOLP/VOHP); requires external decoupling and layout mitigation | Preferred where cost sensitivity outweighs noise-critical timing; verify layout for >100 MHz bus operation |
| 74FCT16240ATPAG | IDT part in 48-pin TSSOP; same pinout, 3-STATE, and inverting function; lower ICC (2 µA typ), but only rated to 70°C ambient | Not qualified for extended industrial temperature range (−40°C to +85°C) | Select when operating environment stays below 70°C and ultra-low static power is prioritized |
Compared with SN74ACT16240DGGR and 74FCT16240ATPAG, the 74ACTQ16240MTD uniquely delivers factory-validated simultaneous switching noise performance and full industrial temperature support - making it the only choice for noise-sensitive, wide-temperature embedded bus systems requiring guaranteed timing integrity.
Availability
74ACTQ16240MTD is available at Aetrix Electronics and suitable for memory subsystems, clock distribution networks, legacy bus interfaces, and automated test equipment requiring stable component supply and long-term industrial-grade availability.
Supply support for 74ACTQ16240MTD 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 FACT and Quiet Series™ families set industry benchmarks for speed-noise tradeoffs in 5 V logic.
The 74ACTQ16240MTD belongs to Fairchild's ACTQ logic family - engineered specifically for high-speed, noise-immune bus driving in industrial and telecom infrastructure where deterministic timing and signal integrity are non-negotiable.
FAQ
What is the operating temperature range for the 74ACTQ16240MTD?
The 74ACTQ16240MTD is fully specified for operation from −40°C to +85°C ambient temperature. This industrial-grade range is confirmed in the Absolute Maximum Ratings and Recommended Operating Conditions tables of the official Fairchild datasheet DS010924, and applies across all electrical parameters including propagation delay, output drive, and noise immunity metrics.
Does the 74ACTQ16240MTD support 3.3 V operation?
No, the 74ACTQ16240MTD is not rated for 3.3 V operation. Its recommended supply voltage is strictly 4.5 V to 5.5 V, and absolute maximum VCC is +7.0 V. Operation below 4.5 V may result in undefined logic thresholds, reduced noise margins, and failure to meet guaranteed skew or drive specifications. For 3.3 V systems, consider functionally similar alternatives like 74LVC16240.
How many independent 3-STATE control inputs does the 74ACTQ16240MTD have?
The 74ACTQ16240MTD has four independent active-low 3-STATE control inputs: OE1, OE2, OE3, and OE4 - one per 4-bit nibble (I0–I3/O0–O3, I4–I7/O4–O7, etc.). This allows selective disabling of any 4-bit segment without affecting others, enabling fine-grained bus arbitration and partial isolation in complex memory or peripheral interfaces.
Is the 74ACTQ16240MTD pin-compatible with the standard 74ACT16240?
Yes, the 74ACTQ16240MTD shares identical pinout and logic functionality with the base 74ACT16240, including nibble-based OE inputs and inverting buffer behavior. However, the "Q" suffix denotes Fairchild's Quiet Series™ enhancements - meaning the 74ACTQ16240MTD adds factory-verified simultaneous switching noise suppression (VOLP/VOHP) not present in the non-Q variant, while maintaining full mechanical and electrical pin compatibility.
What package type is used for the 74ACTQ16240MTD?
The 74ACTQ16240MTD uses a 48-lead Thin Shrink Small Outline Package (TSSOP), designated MTD48 per Fairchild's ordering nomenclature. It complies with JEDEC MO-153, measures 6.1 mm wide, and features 0.5 mm lead pitch - distinct from the wider SSOP (MS48A) variant used for the 74ACTQ16240SSC.
74ACTQ16240MTD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74ACTQ
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Inverting
- Number of Elements:
- 4
- 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:
- 48-TSSOP
74ACTQ16240MTD FAQ
1.How can I place an order for 74ACTQ16240MTD through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ACTQ16240MTD 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 74ACTQ16240MTD reliable?
The price and inventory of 74ACTQ16240MTD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ACTQ16240MTD is usually 5 days.
3.What payment methods are accepted for 74ACTQ16240MTD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ACTQ16240MTD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ACTQ16240MTD?
74ACTQ16240MTD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ACTQ16240MTD 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 74ACTQ16240MTD?
For technical support, including 74ACTQ16240MTD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ACTQ16240MTD requirements.
6.How does Aetrix verify that 74ACTQ16240MTD is sourced from the original manufacturer or authorized distributors?
All 74ACTQ16240MTD 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 74ACTQ16240MTD meets industry standards.
7.What is the process for return or replacement of 74ACTQ16240MTD?
All 74ACTQ16240MTD units undergo pre-shipment inspection (PSI). If there is an issue with 74ACTQ16240MTD, 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 74ACTQ16240MTD part is unused and in its original packaging.
Return procedure for 74ACTQ16240MTD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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