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NXP Semiconductors 74ABT2244PW,112
- Part No.:
- 74ABT2244PW,112
- Manufacturer:
- NXP Semiconductors
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74ABT2244PW,112.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,964
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Product details
Overview
74ABT2244PW,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 over –40°C to +85°C at 4.5–5.5V supply.
For engineers reviewing the 74ABT2244PW,112 datasheet, 74ABT2244PW,112 pinout, 74ABT2244PW,112 application, or 74ABT2244PW,112 equivalent, key selection criteria include its on-die 30Ω series termination eliminating external resistors, live insertion/extraction support, and BiCMOS low-noise, high-drive performance in TSSOP20 packaging.
Technical Context
The 74ABT2244PW,112 implements a dual-gated octal buffer architecture: two groups of four 3-state outputs (1Y0–1Y3 and 2Y0–2Y3), each controlled by separate enable inputs (1OE and 2OE). Its BiCMOS process delivers 2.8ns typical tPLH and 3.9ns typical tPHL propagation delays under CL = 50pF.
Each output integrates matched 30Ω series resistance in both logic states-reducing ringing and overshoot without requiring external termination-while maintaining full 3-state isolation (IOZH ≤ 50µA, IOZL ≥ –50µA) and latch-up immunity >500mA per JEDEC Std 17.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5V to 5.5V - Ensures compatibility with standard 5V TTL/CMOS systems and robust noise margin. |
| Output Drive | +5mA / –32mA - Supports heavy capacitive loads and fast edge rates on shared bus lines. |
| Propagation Delay | tPLH = 2.8ns, tPHL = 3.9ns (CL = 50pF, VCC = 5V) - Enables sub-5ns timing-critical bus interfacing. |
| Input Capacitance | CIN = 4pF - Minimizes loading on upstream drivers and preserves signal integrity in fan-out chains. |
| Termination Resistance | 30Ω series per output - Eliminates need for external SMT resistors, reducing BOM count and PCB area. |
| Operating Temperature | –40°C to +85°C - Qualified for industrial-grade embedded and computing environments. |
| ESD Protection | 2000V HBM, 200V MM - Provides robust handling during board assembly and system integration. |
Pinout & Package
74ABT2244PW,112 is housed in a 20-pin plastic TSSOP (Thin Shrink Small Outline Package) with 4.4 mm body width (SOT360-1), optimized for high-density PCB layouts and automated surface-mount assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low enable inputs controlling Y-group outputs; independent gating allows partial bus activation. |
| 2, 4, 6, 8 | 1A0–1A3 | Data inputs for first output group (1Y0–1Y3); TTL-compatible voltage thresholds (VIL ≤ 0.8V, VIH ≥ 2.0V). |
| 11, 13, 15, 17 | 2A0–2A3 | Data inputs for second output group (2Y0–2Y3); electrically isolated from first group. |
| 12, 14, 16, 18 | 1Y0–1Y3 | 3-state outputs with integrated 30Ω series resistor; drive capability up to –32mA sink. |
| 3, 5, 7, 9 | 2Y0–2Y3 | 3-state outputs with integrated 30Ω series resistor; fully compatible with 1Y outputs in layout routing. |
| 10 | GND | Ground reference for all I/O and internal circuitry; requires low-impedance PCB plane connection. |
| 20 | VCC | Positive supply input (4.5–5.5V); decoupling capacitor (0.1µF) recommended adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 30Ω series termination | Eliminates external resistors for point-to-point or stubbed bus topologies, reducing component count and layout complexity. |
| Live insertion/extraction support | Enables hot-swap capability in backplane and modular systems without damaging the device or host controller. |
| Power-up 3-State | Outputs remain in high-impedance state until VCC stabilizes, preventing bus contention during power sequencing. |
| Latch-up immunity >500mA | Meets JEDEC Std 17 - ensures robust operation in noisy industrial environments with transient coupling. |
| BiCMOS process technology | Combines bipolar speed and CMOS low static power: ICCZ = 50µA in 3-state mode at VCC = 5.5V. |
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 control systems. IC Role / Device Role / Timing Role: Octal buffer providing level translation, current boosting, and impedance-matched transmission with 30Ω series termination. Use Value: Reduces signal reflections and setup/hold violations on long traces, enabling reliable 25+ MHz address strobing without external termination. |
Use Scenario: Interfacing a 32-bit ISA or legacy PCI bus controller to peripheral cards with mismatched load capacitance. IC Role / Device Role / Timing Role: Bidirectional line driver with independent OE control for read/write direction management and bus isolation. Use Value: Dual OE pins allow selective activation of address vs. data groups, minimizing bus contention and dynamic power during burst transfers. |
| High-Speed Clock Distribution | Backplane Signal Integrity Buffer |
|
Use Scenario: Distributing a 50MHz system clock across multiple FPGA or ASIC clock inputs on a multi-layer PCB. IC Role / Device Role / Timing Role: Low-skew, terminated buffer replicating and driving clock signals with controlled edge rates. Use Value: Integrated 30Ω resistors suppress ringing and overshoot, maintaining <100ps jitter margin at 50MHz with 50pF load. |
Use Scenario: Isolating and strengthening differential-pair-referenced single-ended signals across a 12-slot VMEbus backplane. IC Role / Device Role / Timing Role: High-drive, low-capacitance repeater placed at mid-span to restore signal amplitude and slew rate. Use Value: –32mA sink capability drives 100+ pF net capacitance while maintaining monotonic edges, reducing bit error rate in legacy backplane links. |
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 |
|---|---|---|---|
| SN74ABT244DBR | Same functional logic and 30Ω termination, but TI's version uses different BiCMOS process yielding tPLH/tPHL = 3.2/4.5ns (typical) and higher ICCZ (100µA). | Marginally slower propagation and higher quiescent current; suitable where TI supply chain preference exists. | Select SN74ABT244DBR only if sourcing from TI-authorized channels is required; not pin-compatible due to differing pin 1 marking and thermal pad design. |
| 74LVT244PW,112 | Lower voltage operation (2.7–3.6V), no integrated termination, 64mA drive, and 3.5ns typical delay - lacks 30Ω series resistors entirely. | Requires external 33Ω series resistors for equivalent signal integrity; incompatible with 5V bus systems. | Choose 74LVT244PW,112 only for 3.3V-only designs where external termination is acceptable and higher drive is needed. |
Compared with SN74ABT244DBR and 74LVT244PW,112, the 74ABT2244PW,112 uniquely combines 5V operation, guaranteed 30Ω on-die termination, and industry-standard TSSOP20 footprint - making it the only drop-in solution for legacy 5V bus redesigns requiring zero-layout change.
Availability
74ABT2244PW,112 is available at Aetrix Electronics and suitable for industrial control panels, legacy computer backplanes, and memory subsystems requiring stable component supply, long-term lifecycle support, and verified 5V bus interface compatibility.
Supply support for 74ABT2244PW,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, with roots in Philips' pioneering IC development.
The 74ABT2244PW,112 belongs to NXP's ABT (Advanced BiCMOS Technology) logic family - engineered specifically for high-speed, low-noise 5V bus interfacing in industrial and computing infrastructure where signal integrity and reliability are critical.
FAQ
What is the function of the 30Ω series termination resistors in the 74ABT2244PW,112?
The 30Ω series termination resistors in the 74ABT2244PW,112 are integrated into each output path (both high and low states) to match typical PCB trace impedances (~60Ω differential, ~30Ω single-ended). This minimizes signal reflections, overshoot, and ringing on bus lines up to 50MHz without requiring external resistors - directly reducing BOM cost and layout complexity. The 74ABT2244PW,112 achieves this while maintaining full 3-state isolation and ±32mA drive strength.
Is the 74ABT2244PW,112 pin-compatible with the 74ABT244-1?
Yes - the 74ABT2244PW,112 is explicitly documented as identical in functionality and pinout to the 74ABT244-1, with the part number updated to align with industry naming conventions. Both share identical pin configuration (1OE, 1A0–1A3, 2Y0–2Y3, GND, VCC, etc.), electrical specifications, and TSSOP20 package outline (SOT360-1). The 74ABT2244PW,112 retains full backward compatibility with existing 74ABT244-1 designs.
Does the 74ABT2244PW,112 support live insertion and hot-swap operations?
Yes, the 74ABT2244PW,112 supports live insertion and extraction per its datasheet features. Its BiCMOS input structure, power-up 3-state behavior, and ESD-hardened I/O (2000V HBM) allow safe insertion into powered-backplane or hot-pluggable card-edge systems without risk of latch-up or damage. This makes the 74ABT2244PW,112 suitable for modular industrial controllers and telecom line cards where field-replaceable modules are required.
What is the maximum capacitive load the 74ABT2244PW,112 can drive while maintaining specified timing?
The 74ABT2244PW,112 is characterized for CL = 50pF in AC specifications, delivering tPLH = 2.8ns and tPHL = 3.9ns at VCC = 5V. While it can drive heavier loads (e.g., 100pF) due to its –32mA sink capability, propagation delay increases linearly with capacitance - exceeding 5.3ns at 100pF. For timing-critical applications above 25MHz, keep net capacitance ≤50pF; the 74ABT2244PW,112's 30Ω termination helps maintain edge fidelity even under moderate capacitive loading.
How does the dual-output-enable architecture of the 74ABT2244PW,112 improve system design?
The dual-output-enable architecture (1OE and 2OE) in the 74ABT2244PW,112 allows independent control of two groups of four outputs - enabling partial bus activation, reduced dynamic power, and flexible timing partitioning. For example, one OE can manage address lines while the other controls data strobes, eliminating bus contention during read/write transitions. This feature is leveraged in the 74ABT2244PW,112 to support complex memory-mapped I/O and multiplexed bus protocols without additional logic.
74ABT2244PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74ABT
- Package/Case:
- 20-TSSOP (0.173", 4.40mm 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-TSSOP
74ABT2244PW,112 FAQ
1.How can I place an order for 74ABT2244PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABT2244PW,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 74ABT2244PW,112 reliable?
The price and inventory of 74ABT2244PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT2244PW,112 is usually 5 days.
3.What payment methods are accepted for 74ABT2244PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ABT2244PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ABT2244PW,112?
74ABT2244PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ABT2244PW,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 74ABT2244PW,112?
For technical support, including 74ABT2244PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT2244PW,112 requirements.
6.How does Aetrix verify that 74ABT2244PW,112 is sourced from the original manufacturer or authorized distributors?
All 74ABT2244PW,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 74ABT2244PW,112 meets industry standards.
7.What is the process for return or replacement of 74ABT2244PW,112?
All 74ABT2244PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT2244PW,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 74ABT2244PW,112 part is unused and in its original packaging.
Return procedure for 74ABT2244PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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