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NXP Semiconductors 74ABT2245PW,118
- Part No.:
- 74ABT2245PW,118
- Manufacturer:
- NXP Semiconductors
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74ABT2245PW,118.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,877
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Product details
Overview
74ABT2245PW,118 from NXP Semiconductors (formerly Philips) 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 achieves 3.9 ns typical propagation delay (An↔Bn) at 5 V with 50 pF load - ideal for high-speed memory address/data bus interfacing in industrial control backplanes.
For engineers reviewing the 74ABT2245PW,118 datasheet, 74ABT2245PW,118 pinout, 74ABT2245PW,118 application, or 74ABT2245PW,118 equivalent, key selection criteria include its on-die 30 Ω series termination (eliminating external resistors), live-insertion capability, power-up 3-State behavior, and compatibility with ABT-family timing and drive requirements in 5 V TTL/CMOS mixed-signal systems.
Technical Context
The 74ABT2245PW,118 implements a dual-rail BiCMOS architecture enabling low static current (50 µA in 3-State) while sustaining high-speed switching. Its DIR-controlled bidirectional data flow supports both A→B and B→A transmission paths without inversion, with OE asserting high-impedance outputs independently of direction state.
All eight I/O pairs feature matched 30 Ω series resistance in both HIGH and LOW output states - a fixed design element that damps signal reflections on PCB traces up to 100 MHz, reducing EMI in parallel bus topologies such as ISA-compatible expansion interfaces and FPGA-to-ASIC interconnects.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 4.5 V to 5.5 V - ensures robust operation across industrial 5 V rail tolerances without level-shifting. |
| Propagation delay (tPLH/tPHL) | 3.9 ns typical (CL = 50 pF, VCC = 5 V) - enables ≤200 MHz bus clocking in point-to-point or short stub configurations. |
| Output drive strength | +12 mA / –32 mA - sufficient to drive 50 Ω transmission lines or fan-out to ≥10 standard TTL loads. |
| Integrated termination | 30 Ω series resistor per output - eliminates need for 20 discrete SMT resistors in octal bus designs, saving board area and BOM cost. |
| Input capacitance (CIN) | 4 pF (DIR, OE) - minimizes capacitive loading on control signals, preserving timing margins in dense routing. |
| I/O pin capacitance (CI/O) | 7 pF (outputs disabled) - reduces dynamic power and crosstalk in high-density bus layouts. |
| Quiescent supply current (ICCZ) | 50 µA max (VCC = 5.5 V, outputs 3-State) - supports low-power standby modes in always-on subsystems. |
Pinout & Package
74ABT2245PW,118 is housed in a 20-pin plastic thin shrink small outline package (TSSOP), body width 4.4 mm, lead pitch 0.65 mm (SOT360-1), suitable for automated SMT assembly and space-constrained industrial PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | DIR | Direction control input: LOW enables A→B data flow; HIGH enables B→A flow - decouples bus arbitration from OE timing. |
| 2–9 | A0–A7 | A-side bidirectional I/O pins - connect to local processor/memory bus; internally terminated when active. |
| 10 | GND | Ground reference - dedicated low-inductance return path for all I/O and supply currents. |
| 11–18 | B0–B7 | B-side bidirectional I/O pins - interface to peripheral or expansion bus; share same 30 Ω termination as A-side. |
| 19 | OE | Active-LOW output enable - places all A/B pins in high-impedance state regardless of DIR state, enabling bus sharing. |
| 20 | VCC | Positive supply - powers internal BiCMOS circuitry; requires local 100 nF ceramic decoupling adjacent to pin 20. |
Key Features
| Feature | Design Value |
|---|---|
| On-die 30 Ω series termination | Eliminates external termination resistors on all 16 I/O lines, reducing component count, layout complexity, and signal integrity risk. |
| Power-up 3-State | Outputs remain high-impedance until VCC stabilizes above 2.1 V, preventing bus contention during power sequencing. |
| Live insertion/extraction support | Withstands hot-plug events without latch-up (≥500 mA per JEDEC 17) or ESD damage (≥2 kV HBM), enabling modular backplane designs. |
| Non-inverting bidirectional logic | Preserves signal polarity in both directions - simplifies timing analysis and eliminates need for inverters in A↔B paths. |
| Latch-up immunity | Exceeds 500 mA per JEDEC Std 17 - ensures robustness in noisy industrial environments with ground bounce or supply transients. |
Applications
| Memory Address Bus Interface | FPGA-to-Microcontroller Interconnect |
|---|---|
|
Use Scenario: Driving 16-bit address lines from a microcontroller to SRAM or Flash memory in an industrial PLC mainboard. IC Role / Device Role / Timing Role: Bidirectional address/data transceiver with direction control synchronized to memory read/write strobes. Use Value: Integrated 30 Ω termination suppresses ringing on 80 mm trace lengths, maintaining setup/hold margins at 25 MHz bus speed. |
Use Scenario: Isolating and level-translating control/status signals between a Xilinx Spartan FPGA and an ARM Cortex-M4 MCU. IC Role / Device Role / Timing Role: Glue logic transceiver managing bidirectional JTAG, SPI, or GPIO expansion with minimal external components. Use Value: Power-up 3-State prevents FPGA configuration conflicts; ±32 mA drive ensures reliable signaling across 10 cm flex cable runs. |
| ISA-Compatible Expansion Slot | Industrial Backplane Data Bridge |
|
Use Scenario: Implementing a legacy ISA slot interface in modern embedded test equipment requiring PC/104 compatibility. IC Role / Device Role / Timing Role: Octal transceiver buffering address/data/multiplexed control lines between host CPU and expansion card. Use Value: Live insertion support allows hot-swapping of ISA cards without system reset; 3.9 ns delay meets ISA timing budgets. |
Use Scenario: Bridging two isolated 8-bit data buses in a redundant control system where fault isolation is critical. IC Role / Device Role / Timing Role: Directionally controlled data shuttle enabling master-slave communication across galvanically separated domains. Use Value: Independent DIR and OE pins allow precise control of data flow direction and bus release timing, preventing deadlocks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT245DBR | Same ABT family, identical 30 Ω termination and pinout, but TI-marked package (SSOP-20); propagation delay 4.2 ns (max). | Functionally interchangeable in new designs; TI's ABT245DBR has identical AC/DC specs and qualification per JEDEC 17. | Select when sourcing from TI-authorized channels or requiring TI-specific traceability documentation. |
| 74LVT245PW,118 | Lower voltage (3.3 V only), 24 mA drive, no integrated termination; requires external 33 Ω resistors for equivalent noise suppression. | Suitable for 3.3 V-only systems where BOM cost sensitivity outweighs layout simplicity; not drop-in compatible due to VCC and termination differences. | Choose only if migrating to 3.3 V operation and accepting added resistor placement and layout verification effort. |
Compared with SN74ABT245DBR and 74LVT245PW,118, the 74ABT2245PW,118 offers guaranteed 5 V operation with built-in termination - reducing design validation time and eliminating 16 external components, whereas alternatives require either voltage translation or discrete termination.
Availability
74ABT2245PW,118 is available at Aetrix Electronics and suitable for industrial control backplanes, FPGA interconnects, and legacy bus interface designs requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant TSSOP packaging.
Supply support for 74ABT2245PW,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 74ABT2245PW,118 belongs to NXP's ABT-series advanced BiCMOS logic family, engineered for high-speed, low-noise 5 V bus interfacing in mission-critical industrial and telecom infrastructure.
FAQ
What is the function of the DIR pin on the 74ABT2245PW,118?
The DIR (Direction) pin on the 74ABT2245PW,118 controls data flow direction: when DIR is LOW, data passes from A-side inputs (A0–A7) to B-side outputs (B0–B7); when DIR is HIGH, data flows from B-side to A-side. This bidirectional control operates independently of the OE pin, allowing flexible bus arbitration in multiprocessor or master-slave architectures without requiring external logic.
Does the 74ABT2245PW,118 require external termination resistors?
No, the 74ABT2245PW,118 does not require external termination resistors. Each output features a built-in 30 Ω series resistor in both HIGH and LOW states, designed to match typical PCB trace impedances and suppress reflections - a key differentiator from standard 74-series transceivers like the 74LS245 or 74HC245.
What is the maximum operating temperature range for the 74ABT2245PW,118?
The 74ABT2245PW,118 is rated for operation from –40 °C to +85 °C, meeting industrial temperature requirements. This range is validated per the manufacturer's recommended operating conditions and supported by thermal derating data in the original Philips product specification (9397 750 10846, Rev _3, 2002).
Can the 74ABT2245PW,118 be used in hot-swap applications?
Yes, the 74ABT2245PW,118 supports live insertion and extraction per its datasheet specifications: it includes latch-up protection exceeding 500 mA (JEDEC Std 17) and ESD protection of ≥2000 V (HBM), making it suitable for modular backplane systems where cards are inserted or removed while powered.
Is the 74ABT2245PW,118 pin-compatible with the 74ABT245-1?
Yes, the 74ABT2245PW,118 is functionally and pin-compatible with the 74ABT245-1, as explicitly stated in the Philips datasheet: "The 74ABT2245 is the same as the 74ABT245-1. The part number has been changed to reflect industry standards." Both share identical pinout, electrical characteristics, and AC timing.
74ABT2245PW,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:
- 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,118 FAQ
1.How can I place an order for 74ABT2245PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABT2245PW,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 74ABT2245PW,118 reliable?
The price and inventory of 74ABT2245PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT2245PW,118 is usually 5 days.
3.What payment methods are accepted for 74ABT2245PW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ABT2245PW,118 transactions.
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4.How is shipping managed for 74ABT2245PW,118?
74ABT2245PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ABT2245PW,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 74ABT2245PW,118?
For technical support, including 74ABT2245PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT2245PW,118 requirements.
6.How does Aetrix verify that 74ABT2245PW,118 is sourced from the original manufacturer or authorized distributors?
All 74ABT2245PW,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 74ABT2245PW,118 meets industry standards.
7.What is the process for return or replacement of 74ABT2245PW,118?
All 74ABT2245PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT2245PW,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 74ABT2245PW,118 part is unused and in its original packaging.
Return procedure for 74ABT2245PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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