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NXP Semiconductors 74ABT2244N,112
- Part No.:
- 74ABT2244N,112
- Manufacturer:
- NXP Semiconductors
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
74ABT2244N,112.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,516
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Product details
Overview
74ABT2244N,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, and operates across –40°C to +85°C at 4.5–5.5V supply.
For engineers reviewing the 74ABT2244N,112 datasheet, 74ABT2244N,112 pinout, 74ABT2244N,112 application, or 74ABT2244N,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 BiCMOS speed-power trade-off optimized for TTL-compatible systems.
Technical Context
The 74ABT2244N,112 implements two independent 4-bit 3-state buffers, each controlled by a dedicated output enable (1OE for Y0–Y3, 2OE for Y0'–Y3'). Its BiCMOS architecture delivers 2.8ns typical tPLH and 3.9ns tPHL at CL = 50pF with VCC = 5V.
All eight outputs integrate matched 30Ω series resistors in both high and low states-reducing ringing and overshoot without requiring PCB-level termination. 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 | 4.5–5.5 V - Ensures compatibility with standard 5V TTL and ABT logic families while maintaining noise margin. |
| Output Drive | –32 mA / +5 mA - Supports heavy capacitive loads and fan-out to multiple inputs without external buffering. |
| Propagation Delay | 2.8 ns (tPLH), 3.9 ns (tPHL) - Enables reliable operation in sub-5ns timing-critical bus interfaces. |
| Input Capacitance | 4 pF - Minimizes loading on upstream drivers and preserves signal edge integrity. |
| 3-State Leakage | ±50 µA (IOZH/IOZL) - Guarantees low off-state current for stable bus contention management. |
| Series Termination | 30 Ω (integrated) - Eliminates need for external resistors, reducing BOM count and layout complexity. |
| Operating Temperature | –40°C to +85°C - Validated for industrial-grade embedded and computing environments. |
Pinout & Package
74ABT2244N,112 is supplied in a 20-pin plastic DIP (Dual In-line Package) per SOT146-1, with 300-mil body width and through-hole mounting. Pin 10 is GND, pin 20 is VCC, and outputs feature internal 30Ω series resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low enables controlling separate 4-bit output groups; asserted low activates corresponding Yn outputs. |
| 2, 4, 6, 8 | 1A0–1A3 | Data inputs for first buffer group; drive 1Y0–1Y3 when 1OE = L. |
| 11, 13, 15, 17 | 2A0–2A3 | Data inputs for second buffer group; drive 2Y0–2Y3 when 2OE = L. |
| 18, 16, 14, 12 | 1Y0–1Y3 | Outputs with integrated 30Ω series resistor; driven by 1A0–1A3 under 1OE control. |
| 9, 7, 5, 3 | 2Y0–2Y3 | Outputs with integrated 30Ω series resistor; driven by 2A0–2A3 under 2OE control. |
| 10 | GND | Reference ground for all I/O and supply terminals; required for proper biasing and noise immunity. |
| 20 | VCC | +5V supply rail; powers internal BiCMOS circuitry and defines logic thresholds. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 30Ω series termination | Eliminates external resistors on all eight outputs, reducing PCB area and improving signal integrity in high-speed buses. |
| Live insertion/extraction support | Enables hot-swap capability in backplane and modular systems without damaging the device or host system. |
| Power-up 3-State | Ensures outputs remain in high-impedance state during power ramp-up, preventing bus contention at startup. |
| Latch-up immunity >500 mA | Meets JEDEC Std 17, enabling robust operation in noisy industrial environments with transient voltage spikes. |
| ESD protection >2 kV (HBM) | Provides handling resilience during assembly and field service without requiring special ESD precautions. |
Applications
| Memory Address Bus Driver | PCI/ISA Local Bus Transceiver |
|---|---|
|
Use Scenario: Driving 16-bit address lines from a microcontroller to SRAM or flash memory in embedded controllers. IC Role / Device Role / Timing Role: Octal buffer isolating and strengthening address signals with matched delay and termination. Use Value: Integrated 30Ω resistors suppress reflections on parallel traces, enabling stable 20+ MHz address strobes without added components. |
Use Scenario: Level-shifting and bus-driving between CPU and legacy expansion slots in industrial PCs. IC Role / Device Role / Timing Role: Bidirectional line driver managing data/control lines with independent enable control per group. Use Value: Dual OE pins allow selective activation of address vs. data lanes, simplifying bus arbitration logic and reducing gate count. |
| System Clock Distribution | Backplane Signal Conditioning |
|
Use Scenario: Fan-out of a master clock to multiple synchronous peripherals (e.g., ADCs, DACs, FPGAs). IC Role / Device Role / Timing Role: Low-skew, terminated buffer ensuring clean clock edges across distributed loads. Use Value: Matched 30Ω series resistance minimizes overshoot and maintains <5ns skew across all eight outputs. |
Use Scenario: Interfacing between motherboard and hot-pluggable modules in telecom or test equipment racks. IC Role / Device Role / Timing Role: Robust bus interface supporting live insertion with latch-up and ESD hardening. Use Value: Live insertion capability and >500mA latch-up rating prevent damage during module replacement under power. |
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 |
|---|---|---|---|
| 74ABT244N,112 | Identical electrical specs and pinout; same die as 74ABT2244N,112 per Philips documentation. | No functional difference; used interchangeably in legacy designs where part numbering follows older ABT244 convention. | Select based on BOM consistency-74ABT244N,112 is functionally identical but may differ in packaging code or traceability. |
| SN74ABT2244N | TI version with identical AC/DC specs, same 30Ω termination, and compatible pinout; minor differences in ICCZ max (250 µA vs. 250 µA). | Valid for drop-in use in existing 74ABT2244N,112 designs; TI offers extended lifecycle support and alternate sourcing. | Prefer SN74ABT2244N when long-term availability or dual-sourcing is required; verify thermal derating in high-density layouts. |
Compared with 74ABT2244N,112, the 74ABT244N,112 offers no technical distinction-it is the same device rebranded-while SN74ABT2244N provides identical functionality with TI's manufacturing continuity and qualification for extended temperature variants.
Availability
74ABT2244N,112 is available at Aetrix Electronics and suitable for memory subsystem design, industrial backplane interfacing, and legacy bus expansion requiring stable component supply and long-lifecycle support.
Supply support for 74ABT2244N,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 74ABT2244N,112 belongs to NXP's legacy ABT logic family, engineered for high-speed, low-noise 5V TTL-compatible bus interfacing with integrated termination and industrial reliability.
FAQ
What is the function of the 30Ω series resistors in the 74ABT2244N,112?
The 30Ω series resistors are integrated into each output path of the 74ABT2244N,112 and operate in both high and low states to dampen signal reflections on transmission lines. This eliminates the need for external termination resistors in point-to-point or short-bus configurations, directly improving signal integrity for memory address, clock, and data bus applications without increasing PCB component count.
Does the 74ABT2244N,112 support live insertion?
Yes, the 74ABT2244N,112 supports live insertion and extraction per its datasheet specification. Its BiCMOS input structure, combined with power-up 3-State behavior and robust ESD/latch-up protection (>2000 V HBM, >500 mA), allows safe insertion into powered backplanes or hot-swappable modules without risk of damage to the device or system.
How does the dual output enable (1OE/2OE) improve system design with the 74ABT2244N,112?
The dual output enable pins (1OE and 2OE) in the 74ABT2244N,112 independently control two groups of four outputs (1Y0–1Y3 and 2Y0–2Y3). This enables selective bus segmentation-for example, driving address and data lanes separately-reducing contention, simplifying arbitration logic, and allowing partial bus isolation without additional logic gates or controllers.
Is the 74ABT2244N,112 pin-compatible with the 74ABT244N,112?
Yes-the 74ABT2244N,112 is explicitly documented by Philips/NXP as functionally and pinout-identical to the 74ABT244N,112. Both share the same die, electrical characteristics, pin configuration, and package dimensions, making them direct replacements in legacy schematics and BOMs where either part number appears.
What is the maximum operating temperature range for the 74ABT2244N,112?
The 74ABT2244N,112 is rated for continuous operation from –40°C to +85°C, validated across its full DC and AC specifications. This industrial temperature range ensures reliable performance in embedded controllers, industrial automation hardware, and telecom infrastructure where ambient conditions exceed commercial-grade limits.
74ABT2244N,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74ABT
- Package/Case:
- 20-DIP (0.300", 7.62mm)
- 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:
- Through Hole
- Supplier Device Package:
- 20-DIP
74ABT2244N,112 FAQ
1.How can I place an order for 74ABT2244N,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABT2244N,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 74ABT2244N,112 reliable?
The price and inventory of 74ABT2244N,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT2244N,112 is usually 5 days.
3.What payment methods are accepted for 74ABT2244N,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ABT2244N,112 transactions.
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4.How is shipping managed for 74ABT2244N,112?
74ABT2244N,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ABT2244N,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 74ABT2244N,112?
For technical support, including 74ABT2244N,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT2244N,112 requirements.
6.How does Aetrix verify that 74ABT2244N,112 is sourced from the original manufacturer or authorized distributors?
All 74ABT2244N,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 74ABT2244N,112 meets industry standards.
7.What is the process for return or replacement of 74ABT2244N,112?
All 74ABT2244N,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT2244N,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 74ABT2244N,112 part is unused and in its original packaging.
Return procedure for 74ABT2244N,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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