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NXP Semiconductors 74ABT2245PW,112
- Part No.:
- 74ABT2245PW,112
- Manufacturer:
- NXP Semiconductors
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74ABT2245PW,112.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,896
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Product details
Overview
74ABT2245PW,112 from NXP Semiconductors (formerly Philips Semiconductors) is an octal bidirectional 3-State transceiver with integrated 30 Ω series output termination resistors, non-inverting logic, and separate direction (DIR) and output enable (OE) controls. It operates from 4.5 V to 5.5 V, delivers ±32 mA sink/source drive, and supports high-speed bus interfacing in memory address, clock, and data bus applications.
For engineers reviewing the 74ABT2245PW,112 datasheet, 74ABT2245PW,112 pinout, 74ABT2245PW,112 application, or 74ABT2245PW,112 equivalent, key selection criteria include its built-in 30 Ω series termination (eliminating external resistors), live insertion capability, power-up 3-State behavior, and compatibility with ABT-family timing and drive specifications.
Technical Context
The 74ABT2245PW,112 implements a dual-bus transceiver architecture with independent DIR and OE inputs enabling precise control over data flow direction and output state. Its BiCMOS process delivers low propagation delay (3.9 ns typical, An↔Bn) while maintaining high noise immunity via 30 Ω on-die series resistance in both HIGH and LOW output states.
It features latch-up protection exceeding 500 mA per JEDEC Std 17 and ESD robustness of >2000 V HBM / >200 V MM. Inputs are disabled during 3-State mode, and the device supports cascading via OE and directional control without external timing compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures compatibility with standard 5 V TTL/CMOS systems and margin for supply ripple. |
| Propagation Delay | 3.9 ns typical (An↔Bn, CL = 50 pF) - Enables reliable operation in high-speed bus environments up to ~200 MHz effective toggle rate. |
| Output Drive | +12 mA / –32 mA - Supports driving terminated transmission lines and fan-out to multiple TTL loads without external buffers. |
| Input Capacitance | 4 pF (DIR/OE), 7 pF (I/O) - Minimizes capacitive loading on upstream drivers and preserves signal edge integrity. |
| Quiescent ICCZ | 50 µA at VCC = 5.5 V - Low standby current reduces system-level power budget impact during 3-State operation. |
| Series Termination | 30 Ω integrated in each output - Eliminates need for eight discrete 30 Ω SMT resistors, reducing BOM count and PCB area. |
Pinout & Package
74ABT2245PW,112 is housed in a 20-pin plastic TSSOP (Thin Shrink Small Outline Package), Type I, body width 4.4 mm (SOT360-1), rated for –40 °C to +85 °C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | DIR | Direction control input: LOW enables A→B data flow; HIGH enables B→A data flow. |
| 2–9 | A0–A7 | Bidirectional I/O pins on A-side bus - function as inputs or outputs depending on DIR and OE state. |
| 10 | GND | Ground reference (0 V) - required for stable biasing and noise rejection across all internal circuits. |
| 11–18 | B7–B0 | Bidirectional I/O pins on B-side bus - pin order reversed vs A-side to match standard bus layout conventions. |
| 19 | OE | Active-LOW output enable - drives all A/B pins into high-impedance state when HIGH. |
| 20 | VCC | Positive supply voltage (4.5–5.5 V) - powers internal BiCMOS logic and output drivers. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 30 Ω series termination | Reduces line ringing and overshoot on PCB traces without requiring external resistors - simplifies layout and improves signal integrity in point-to-point or stubbed bus topologies. |
| Power-up 3-State | Outputs remain in high-impedance state until VCC stabilizes - prevents bus contention during power sequencing in multi-rail systems. |
| Live insertion/extraction support | Allows hot-swap capability in backplane or modular systems without damaging the device or connected circuitry. |
| Latch-up immunity >500 mA | Meets JEDEC Std 17 - ensures robustness against transient current surges during fault conditions or ESD events. |
| Input disable in 3-State mode | Prevents floating input states and reduces dynamic power consumption when outputs are disabled. |
Applications
| Memory Address Bus Driver | Backplane Data Transceiver |
|---|---|
|
Use Scenario: Driving 8-bit address lines from a microcontroller to SRAM or EPROM in embedded control systems. IC Role / Device Role / Timing Role: Bidirectional level-shifting and impedance-matched bus driver with direction control synchronized to memory read/write cycles. Use Value: Integrated 30 Ω termination eliminates trace reflections on 5–10 cm PCB runs, ensuring clean setup/hold timing margins at 20+ MHz clock rates. |
Use Scenario: Interfacing two independent 8-bit data buses across a 10 cm backplane in industrial PLC modules. IC Role / Device Role / Timing Role: Controlled-direction transceiver managing data flow between CPU and I/O expansion cards using shared DIR and local OE signals. Use Value: Live insertion support allows field-replaceable I/O cards without powering down the main controller; ±32 mA drive sustains signal integrity over 50 Ω characteristic impedance traces. |
| High-Speed Clock Distribution | Legacy Peripheral Interface Bridge |
|
Use Scenario: Buffering and distributing a 25 MHz system clock to multiple peripheral ICs with matched trace lengths. IC Role / Device Role / Timing Role: Non-inverting 3-State clock driver with direction fixed to unidirectional mode (DIR tied LOW), enabling synchronous fan-out. Use Value: 3.9 ns propagation delay and <7 pF I/O capacitance minimize skew and jitter accumulation across eight parallel outputs. |
Use Scenario: Connecting an 8-bit ISA-style peripheral (e.g., UART or parallel port) to a modern microcontroller bus with voltage and timing translation. IC Role / Device Role / Timing Role: Protocol-transparent bus interface translating between different timing domains and drive strengths while preserving data integrity. Use Value: 4.5–5.5 V operating range matches legacy 5 V peripherals; 30 Ω termination damps ringing caused by long ribbon-cable interconnects. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74ABT245D,112 | Same functional specification and pinout; packaged in SO20 (SOT163-1) instead of TSSOP. | SO20 footprint requires larger PCB area and has higher thermal resistance than TSSOP. | Select when board space permits larger package or when legacy SO20 assembly infrastructure is in place. |
| SN74ABT245N | Identical logic, timing, and electrical specs; manufactured by Texas Instruments; no integrated 30 Ω termination. | Requires eight external 30 Ω series resistors - increases BOM cost, layout complexity, and potential mismatch error. | Choose only if TI sourcing preference overrides integration benefit, and external termination is acceptable in design. |
Compared with 74ABT2245PW,112, the 74ABT245D,112 offers identical functionality in a larger SO package, while SN74ABT245N lacks on-die termination - increasing component count and layout sensitivity without improving performance.
Availability
74ABT2245PW,112 is available at Aetrix Electronics and suitable for memory address buffering, backplane data routing, and high-speed clock distribution requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for 74ABT2245PW,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 company formed from the spin-off of Philips Semiconductors in 2006, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The 74ABT2245PW,112 belongs to NXP's ABT-series advanced bipolar transistor logic family, designed for high-speed, low-noise 5 V digital bus interfacing in industrial control and communications equipment.
FAQ
What is the operating temperature range for the 74ABT2245PW,112?
The 74ABT2245PW,112 is specified for operation from –40 °C to +85 °C ambient temperature. This industrial-grade range ensures reliable performance in embedded controllers, factory automation hardware, and outdoor communication equipment where thermal cycling and extended environmental exposure occur. The TSSOP package (SOT360-1) maintains thermal stability within this range without derating.
Does the 74ABT2245PW,112 require external termination resistors?
No, the 74ABT2245PW,112 does not require external termination resistors. Each output includes a precisely matched 30 Ω series resistor in both HIGH and LOW states, engineered to dampen reflections on 50 Ω PCB traces. This integration eliminates eight discrete resistors, reduces layout complexity, and improves signal fidelity in memory, clock, and bus applications - confirmed in the "DESCRIPTION" and "FEATURES" sections of the official NXP datasheet.
Is the 74ABT2245PW,112 pin-compatible with the 74ABT245-1?
Yes, the 74ABT2245PW,112 is functionally and pin-compatible with the 74ABT245-1, as explicitly stated in the datasheet: "The 74ABT2245 is the same as the 74ABT245-1. The part number has been changed to reflect industry standards." Both share identical pin configuration, logic behavior, timing, and electrical characteristics - making them direct replacements in existing designs using the older designation.
What is the maximum output current rating for the 74ABT2245PW,112?
The 74ABT2245PW,112 supports a maximum LOW-level output current (IOL) of 12 mA and a maximum HIGH-level output current (IOH) of –32 mA under recommended operating conditions. These values are validated per the "RECOMMENDED OPERATING CONDITIONS" table and ensure robust drive capability into standard TTL loads and 50 Ω transmission lines without violating voltage thresholds or thermal limits.
How does the 74ABT2245PW,112 handle power-up sequencing?
The 74ABT2245PW,112 features power-up 3-State behavior: outputs remain in high-impedance until VCC reaches a valid operating level (~2.1 V), preventing bus contention during power ramp-up. This is verified in the "FEATURES" list and "DC ELECTRICAL CHARACTERISTICS" table (IPU/IPD parameter), making it suitable for systems with asymmetric rail sequencing or hot-swap requirements.
74ABT2245PW,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:
- Transceiver, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- 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
74ABT2245PW,112 FAQ
1.How can I place an order for 74ABT2245PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABT2245PW,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 74ABT2245PW,112 reliable?
The price and inventory of 74ABT2245PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT2245PW,112 is usually 5 days.
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4.How is shipping managed for 74ABT2245PW,112?
74ABT2245PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ABT2245PW,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 74ABT2245PW,112?
For technical support, including 74ABT2245PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT2245PW,112 requirements.
6.How does Aetrix verify that 74ABT2245PW,112 is sourced from the original manufacturer or authorized distributors?
All 74ABT2245PW,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 74ABT2245PW,112 meets industry standards.
7.What is the process for return or replacement of 74ABT2245PW,112?
All 74ABT2245PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT2245PW,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 74ABT2245PW,112 part is unused and in its original packaging.
Return procedure for 74ABT2245PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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