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NXP Semiconductors 74ABT2244D,112
- Part No.:
- 74ABT2244D,112
- Manufacturer:
- NXP Semiconductors
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74ABT2244D,112.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,566
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Product details
Overview
74ABT2244D,112 from NXP Semiconductors (formerly Philips) is an octal 3-State buffer/line driver with integrated 30Ω series output termination resistors, designed for high-speed bus driving in memory address, clock, and data bus applications. It features dual independent output enables (1OE, 2OE), ±32mA sink/source capability, 2.8ns typical propagation delay (tPLH), and operates across –40°C to +85°C.
For engineers reviewing the 74ABT2244D,112 datasheet, 74ABT2244D,112 pinout, 74ABT2244D,112 application, or 74ABT2244D,112 equivalent, key selection criteria include its on-die 30Ω series termination eliminating external resistors, live insertion/extraction support, power-up 3-State behavior, and compatibility with 5V TTL logic systems requiring low-noise bus drive.
Technical Context
The 74ABT2244D,112 implements a BiCMOS architecture delivering high speed with low static and dynamic power dissipation. Its outputs integrate matched 30Ω series resistors in both HIGH and LOW states to suppress transmission-line reflections without external components.
It provides two independent 4-bit groups (1A0–1A3/1Y0–1Y3 and 2A0–2A3/2Y0–2Y3), each controlled by separate 3-State enables (1OE, 2OE). Inputs are disabled during 3-State mode, and latch-up protection exceeds 500mA per JEDEC Std 17.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5V to 5.5V - Ensures robust operation across industrial 5V rail tolerances. |
| Propagation Delay | 2.8ns (tPLH, typ) - Enables sub-4ns timing margins for >200MHz bus signaling. |
| Output Drive | –32mA / +5mA - Supports heavy capacitive loads and fan-out to multiple TTL inputs. |
| Series Termination | 30Ω integrated - Eliminates need for external series resistors on PCB traces. |
| Input Capacitance | 4pF - Minimizes loading on upstream drivers and preserves signal edge integrity. |
| 3-State Leakage | ±50µA (IOZL/IOZH) - Maintains high-impedance integrity during bus contention or standby. |
| Operating Temperature | –40°C to +85°C - Qualified for industrial and automotive under-hood environments. |
Pinout & Package
74ABT2244D,112 is supplied in a 20-pin plastic SO (Small Outline) package per SOT163-1, 7.5mm body width, surface-mount compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low enables controlling four outputs each; independent control allows partial bus gating. |
| 2, 4, 6, 8 | 1A0–1A3 | First group of four data inputs feeding corresponding 1Yn outputs. |
| 11, 13, 15, 17 | 2A0–2A3 | Second group of four data inputs feeding corresponding 2Yn outputs. |
| 18, 16, 14, 12 | 1Y0–1Y3 | First group of four 3-State outputs with integrated 30Ω series resistance. |
| 9, 7, 5, 3 | 2Y0–2Y3 | Second group of four 3-State outputs with integrated 30Ω series resistance. |
| 10 | GND | Reference ground for all I/O and internal circuitry; decoupling required near pin. |
| 20 | VCC | +5V supply input; requires local 0.1µF ceramic bypass capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 30Ω series termination | Reduces PCB component count and layout complexity while suppressing ringing on 50Ω–75Ω transmission lines. |
| Live insertion/extraction support | Enables hot-swap capability in backplane and modular systems without damaging the device or bus. |
| Power-up 3-State | Outputs remain in high-impedance state during power ramp-up, preventing bus contention at startup. |
| Latch-up immunity >500mA | Meets JEDEC Std 17, ensuring robustness against transient current faults in noisy industrial environments. |
| ESD protection >2kV (HBM) | Provides handling safety during assembly and field service without additional protection circuitry. |
Applications
| Memory Address Bus Driver | PCI/ISA Local Bus Transceiver |
|---|---|
|
Use Scenario: Driving parallel address lines from a microcontroller or ASIC to SRAM or Flash memory arrays. IC Role / Device Role / Timing Role: Octal buffer providing low-skew, terminated drive to minimize reflection-induced setup/hold violations. Use Value: Integrated 30Ω resistors eliminate discrete termination, reducing BOM cost and board area while maintaining signal integrity at 20+ MHz. |
Use Scenario: Bidirectional data buffering between CPU and legacy peripheral cards on ISA or PCI bus segments. IC Role / Device Role / Timing Role: Dual-group 3-State line driver enabling time-multiplexed read/write control over shared bus lines. Use Value: Independent 1OE/2OE pins allow selective activation of upper/lower byte lanes, supporting 8-bit and 16-bit transfers without external logic. |
| High-Speed Clock Distribution | Industrial Backplane Interface |
|
Use Scenario: Distributing system clocks (e.g., 25–50MHz) to multiple synchronous peripherals with matched trace lengths. IC Role / Device Role / Timing Role: Low-propagation-delay buffer with controlled edge rates minimizing jitter accumulation across fan-out paths. Use Value: 2.8ns tPLH and 30Ω series termination reduce overshoot/undershoot, preserving clock duty cycle and timing margin. |
Use Scenario: Interfacing modular I/O cards to a central controller via rigid backplane connectors and long parallel traces. IC Role / Device Role / Timing Role: Robust bus driver with live-insertion support and latch-up immunity for field-replaceable modules. Use Value: Withstands repeated hot-plug cycles and ESD events up to 2kV, extending module lifecycle in factory automation systems. |
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 |
|---|---|---|---|
| 74ABT244D,112 | Identical electrical specs and pinout; same die as 74ABT2244D,112 per Philips documentation. | No functional difference; used interchangeably in legacy designs where part numbering follows ABT244 convention. | Select based on BOM consistency - no design change required when substituting between these two. |
| SN74ABT2244DBR | TI version with identical AC/DC specs, same 20-pin SO package, but different thermal pad configuration and minor packaging marking. | Same industrial temperature range and termination performance; validated for use in TI-based reference designs. | Preferred for TI-centric supply chains; verify reel packaging and tape-and-reel orientation before production release. |
Compared with 74ABT2244D,112, the 74ABT244D,112 offers zero electrical or mechanical differentiation, while SN74ABT2244DBR delivers identical functionality with alternate sourcing and logistics support - both preserve the core value of integrated 30Ω termination and live-insertion capability.
Availability
74ABT2244D,112 is available at Aetrix Electronics and suitable for memory address bus drivers, industrial backplane interfaces, and high-speed clock distribution systems requiring stable component supply and long-term industrial temperature support.
Supply support for 74ABT2244D,112 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
NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications.
The 74ABT2244D,112 belongs to NXP's ABT-series advanced BiCMOS logic family, engineered for high-speed, low-noise bus interfacing in industrial control and computing infrastructure.
FAQ
What is the function of the 30Ω series termination resistors in the 74ABT2244D,112?
The 30Ω series termination resistors in the 74ABT2244D,112 are integrated into each output path to match typical PCB trace impedances and suppress signal reflections. This eliminates the need for external series resistors, reduces component count, improves signal integrity on buses up to 50MHz, and simplifies layout - especially critical in memory address and clock distribution applications where ringing causes timing violations.
Does the 74ABT2244D,112 support live insertion and extraction?
Yes, the 74ABT2244D,112 supports live insertion and extraction per its datasheet specifications. Its BiCMOS design, combined with controlled output turn-on/off characteristics and latch-up immunity exceeding 500mA, enables safe hot-plug operation in modular backplane and rack-mounted systems without risk of damage to the device or connected circuitry during insertion or removal.
What is the maximum operating voltage for the 74ABT2244D,112?
The absolute maximum DC supply voltage for the 74ABT2244D,112 is +7.0V, but the recommended operating range is strictly 4.5V to 5.5V. Operation outside this range may cause unreliable logic levels, increased leakage, or accelerated wear. The 74ABT2244D,112 is not rated for 3.3V-only systems and requires a nominal 5V supply to meet its specified propagation delay, drive strength, and 3-State leakage parameters.
How does the 74ABT2244D,112 differ from standard 74ABT244 devices?
The 74ABT2244D,112 is functionally and electrically identical to the 74ABT244-1 and 74ABT244D,112 per Philips' official documentation - it uses the same die and features identical pinout, timing, and drive characteristics. The "2244" designation reflects industry-standard numbering alignment; no electrical or functional distinction exists between 74ABT2244D,112 and 74ABT244D,112 in actual implementation.
Is the 74ABT2244D,112 suitable for automotive applications?
The 74ABT2244D,112 is qualified for industrial temperature range (–40°C to +85°C) and meets JEDEC latch-up and ESD requirements, but it is not AEC-Q100 qualified and lacks automotive-specific reliability testing or qualification documentation. For automotive applications, NXP recommends verified AEC-Q100 parts such as the 74LVC244A-Q100; the 74ABT2244D,112 remains appropriate for industrial control, test equipment, and non-safety-critical embedded systems.
74ABT2244D,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74ABT
- 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:
- 32mA, 12mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SO
74ABT2244D,112 FAQ
1.How can I place an order for 74ABT2244D,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABT2244D,112 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 74ABT2244D,112 reliable?
The price and inventory of 74ABT2244D,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT2244D,112 is usually 5 days.
3.What payment methods are accepted for 74ABT2244D,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ABT2244D,112 transactions.
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4.How is shipping managed for 74ABT2244D,112?
74ABT2244D,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ABT2244D,112 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 74ABT2244D,112?
For technical support, including 74ABT2244D,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT2244D,112 requirements.
6.How does Aetrix verify that 74ABT2244D,112 is sourced from the original manufacturer or authorized distributors?
All 74ABT2244D,112 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 74ABT2244D,112 meets industry standards.
7.What is the process for return or replacement of 74ABT2244D,112?
All 74ABT2244D,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT2244D,112, 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 74ABT2244D,112 part is unused and in its original packaging.
Return procedure for 74ABT2244D,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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