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NXP Semiconductors 74ABT2244PW,118
- Part No.:
- 74ABT2244PW,118
- Manufacturer:
- NXP Semiconductors
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74ABT2244PW,118.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,606
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Product details
Overview
74ABT2244PW,118 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,118 datasheet, 74ABT2244PW,118 pinout, 74ABT2244PW,118 application, or 74ABT2244PW,118 equivalent, key selection criteria include its on-die 30Ω series termination, low propagation delay (2.8ns typ), high noise immunity, and compatibility with ABT-family logic systems requiring robust bus interface with minimal external components.
Technical Context
The 74ABT2244PW,118 implements a BiCMOS architecture delivering high-speed performance with low static and dynamic power dissipation. Its outputs integrate matched 30Ω series resistors in both high and low states-eliminating need for external termination and reducing line ringing in transmission-line-driven buses.
It contains two independent 4-bit groups, each controlled by separate 3-state enables (1OE, 2OE). Inputs are disabled during 3-state mode, and power-up 3-state behavior prevents bus contention at power-on. Latch-up protection exceeds 500mA per JEDEC Std 17, and ESD rating meets 2000V HBM and 200V MM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5V to 5.5V - Ensures compatibility with standard 5V TTL/ABT logic rails and tolerates supply variation without functional degradation. |
| Propagation Delay (tPLH/tPHL) | 2.8ns / 3.9ns (typ @ 5V, CL=50pF) - Enables reliable operation in sub-5ns timing-critical bus interfaces such as address latching and clock distribution. |
| Output Drive Strength | –32mA sink / +5mA source - Supports direct drive of multiple TTL loads or unterminated transmission lines up to ~50Ω characteristic impedance. |
| Integrated Termination | 30Ω series resistor per output - Matches typical PCB trace impedances, suppresses reflections, and removes requirement for discrete 30–33Ω surface-mount resistors. |
| Input Capacitance | 4pF - Minimizes capacitive loading on upstream drivers, preserving signal edge rates in fan-out-heavy configurations. |
| Operating Temperature | –40°C to +85°C - Qualified for industrial-grade embedded systems including motor control, instrumentation, and telecom infrastructure. |
Pinout & Package
TSSOP20 plastic thin shrink small outline package (SOT360-1), 20-pin, body width 4.4 mm, lead pitch 0.65 mm - optimized for high-density PCB layouts with improved thermal and mechanical reliability versus SOIC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low output enable controls for Group 1 (pins 12–17) and Group 2 (pins 3–9); independent gating allows partial bus isolation. |
| 2, 4, 6, 8 | 1A0–1A3 | Data inputs for first 4-bit buffer group - routed to outputs 1Y0–1Y3 when 1OE = L. |
| 11, 13, 15, 17 | 2A0–2A3 | Data inputs for second 4-bit buffer group - routed to outputs 2Y0–2Y3 when 2OE = L. |
| 12, 14, 16, 18 | 1Y0–1Y3 | 3-state outputs with integrated 30Ω series termination - drive bus segments directly without external resistors. |
| 3, 5, 7, 9 | 2Y0–2Y3 | 3-state outputs with integrated 30Ω series termination - electrically identical to 1Yn but controlled by 2OE. |
| 10 | GND | Dedicated ground reference for noise-sensitive output switching and internal biasing networks. |
| 20 | VCC | Primary 5V supply rail - powers all internal BiCMOS circuitry and output stages; decoupling near pin required. |
Key Features
| Feature | Design Value |
|---|---|
| On-die 30Ω series termination | Eliminates four external 33Ω resistors per group, reducing BOM count, layout area, and signal path discontinuities. |
| Dual independent 3-state enables | Enables selective activation of two 4-bit channels - supports interleaved bus arbitration or segmented memory addressing. |
| Live insertion/extraction support | Allows hot-swap of daughter cards or modules without system reset - critical for modular backplane designs. |
| Power-up 3-state behavior | Outputs remain high-impedance until VCC stabilizes - prevents bus contention and data corruption during power ramp-up. |
| Latch-up immunity >500mA | Meets JEDEC Std 17 - ensures robustness against transient overcurrent events in noisy industrial environments. |
Applications
| Memory Address Bus Driver | High-Speed Clock Distribution |
|---|---|
Use Scenario: Driving parallel address lines from a microcontroller or FPGA to SRAM or Flash memory arrays. IC Role / Device Role / Timing Role: Octal buffer providing level-shifted, terminated, and fan-out amplified address signals with sub-5ns skew control. Use Value: Integrated 30Ω termination suppresses reflections on 50Ω PCB traces, ensuring clean setup/hold margins at >40 MHz bus speeds. |
Use Scenario: Distributing a master clock to multiple synchronous peripherals (e.g., ADCs, DACs, FPGAs) on a single board. IC Role / Device Role / Timing Role: Low-skew, high-drive buffer replicating and terminating clock edges to minimize jitter accumulation and duty-cycle distortion. Use Value: Matched 30Ω output resistance damps ringing on unterminated clock stubs, maintaining <100ps edge integrity across 10+ cm trace lengths. |
| PCI/ISA Bus Transceiver Interface | Industrial I/O Expansion Module |
Use Scenario: Isolating and buffering legacy PCI or ISA bus data/address lines between host CPU and add-in cards. IC Role / Device Role / Timing Role: Bidirectional-capable octal buffer (with OE-controlled direction) enabling safe bus sharing and hot-plug readiness. Use Value: Live insertion support and latch-up immunity allow field-replaceable card deployment without chassis power-down. |
Use Scenario: Interfacing programmable logic or microcontrollers to industrial digital I/O modules with long cable runs. IC Role / Device Role / Timing Role: Robust line driver translating logic-level signals to noise-resistant bus voltages with controlled edge rates. Use Value: ±32mA drive strength sustains signal integrity over 24AWG twisted-pair cables up to 2 meters without repeaters. |
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 ABT family, identical pinout and 30Ω termination, but TI-marked; tPLH/tPHL 3.0ns/4.2ns (slightly slower). | Valid drop-in replacement in TI-based designs; same thermal profile and drive strength. | Select when sourcing from TI-authorized channels or when matching existing TI BOMs. |
| 74LVT244PW,118 | Lower voltage (3.3V only), 24mA drive, no integrated termination - requires external 33Ω resistors. | Suitable for mixed-voltage 3.3V systems but adds 8 passive components and increases layout complexity. | Choose only if 3.3V operation is mandatory and board space permits external termination. |
Compared with SN74ABT244DBR and 74LVT244PW,118, the 74ABT2244PW,118 delivers optimal balance of 5V compatibility, integrated termination, and speed - eliminating design compromises in industrial bus interface applications where layout density and signal fidelity are critical.
Availability
74ABT2244PW,118 is available at Aetrix Electronics and suitable for memory subsystems, clock distribution networks, and industrial I/O expansion modules requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for 74ABT2244PW,118 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 logic IC development.
The 74ABT2244PW,118 belongs to NXP's advanced ABT (Advanced BiCMOS Technology) logic family - engineered specifically for high-speed, low-noise bus interface in industrial control, telecom infrastructure, and legacy-compatible computing platforms.
FAQ
What is the function of the 30Ω series termination in the 74ABT2244PW,118?
The 30Ω series termination resistors in the 74ABT2244PW,118 are integrated into each output stage to match typical PCB trace impedances (e.g., 50Ω), thereby suppressing signal reflections and overshoot. This eliminates the need for eight external 33Ω resistors in standard bus designs, reducing component count, layout area, and potential impedance mismatches that degrade signal integrity at frequencies above 20 MHz.
Does the 74ABT2244PW,118 support live insertion or hot-swap applications?
Yes, the 74ABT2244PW,118 supports live insertion and extraction per its datasheet specifications. Its input and output structures include protection features that prevent damage or bus contention during hot-plug events. This makes the 74ABT2244PW,118 suitable for modular backplane systems, field-upgradeable I/O cards, and telecom line cards where maintenance must occur without full system shutdown.
What is the maximum output current capability of the 74ABT2244PW,118?
The 74ABT2244PW,118 provides –32mA sink current and +5mA source current per output under specified conditions (VCC = 4.5V, Tamb = –40°C to +85°C). This asymmetric drive strength is optimized for driving TTL-compatible loads and unterminated transmission lines, allowing reliable interfacing with multiple downstream logic inputs or moderate-length PCB traces without external buffers.
How does the dual output enable (1OE/2OE) architecture benefit system design?
The dual output enable pins (1OE and 2OE) in the 74ABT2244PW,118 independently control two 4-bit output groups (1Y0–1Y3 and 2Y0–2Y3), enabling selective bus segmentation. This allows partial bus isolation, interleaved addressing, or fault containment - for example, disabling one memory bank while accessing another, or isolating faulty peripheral sections without resetting the entire interface.
Is the 74ABT2244PW,118 pin-compatible with the 74ABT244-1?
Yes, the 74ABT2244PW,118 is functionally and pin-compatible with the 74ABT244-1, as explicitly stated in the Philips datasheet: "The 74ABT2244 is the same as the 74ABT244-1. The part number has been changed to reflect industry standards." Both share identical pin configuration, electrical characteristics, and TSSOP20 (SOT360-1) packaging - making them direct replacements in existing designs.
74ABT2244PW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74ABT
- 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:
- 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,118 FAQ
1.How can I place an order for 74ABT2244PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABT2244PW,118 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,118 reliable?
The price and inventory of 74ABT2244PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT2244PW,118 is usually 5 days.
3.What payment methods are accepted for 74ABT2244PW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ABT2244PW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ABT2244PW,118?
74ABT2244PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ABT2244PW,118 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,118?
For technical support, including 74ABT2244PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT2244PW,118 requirements.
6.How does Aetrix verify that 74ABT2244PW,118 is sourced from the original manufacturer or authorized distributors?
All 74ABT2244PW,118 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,118 meets industry standards.
7.What is the process for return or replacement of 74ABT2244PW,118?
All 74ABT2244PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT2244PW,118, 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,118 part is unused and in its original packaging.
Return procedure for 74ABT2244PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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