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Nexperia USA Inc. 74LVTH2245PW,112
- Part No.:
- 74LVTH2245PW,112
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74LVTH2245PW,112.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,588
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Product details
Overview
74LVTH2245PW,112 from Nexperia is an octal bidirectional 3-state transceiver with integrated 30 Ω output termination resistors, operating from 2.7 V to 3.6 V supply. It features direction control (DIR), output enable (OE), bus hold inputs, and overvoltage-tolerant inputs up to 5.5 V. Used in 3.3 V backplane and board-level bus interfaces where signal integrity and reduced external component count are critical.
For engineers reviewing the 74LVTH2245PW,112 datasheet, 74LVTH2245PW,112 pinout, 74LVTH2245PW,112 application, or 74LVTH2245PW,112 equivalent, key selection criteria include its 30 Ω on-die termination, ±12 mA drive strength, bus hold functionality eliminating pull-ups, and 5.5 V tolerant inputs enabling mixed-voltage interfacing.
Technical Context
This BiCMOS transceiver implements true bidirectional data flow between two 8-bit buses (A- and B-side) under DIR and OE control. Its internal 30 Ω series termination minimizes reflections on transmission lines without requiring external resistors.
Bus hold circuitry actively maintains logic state on unused inputs at VIH ≥ 2.0 V or VIL ≤ 0.8 V, while IOFF protection enables live insertion and partial power-down operation when VCC = 0 V. Propagation delays are specified down to 1.0 ns (tPLH/tPHL typ @ 3.3 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 3.6 V - Enables stable operation across industrial 3.3 V rail tolerances. |
| Output Drive | ±12 mA - Sufficient to drive terminated 50 Ω transmission lines directly. |
| Input Voltage Range | 0 V to 5.5 V - Allows direct interface with 5 V TTL logic without level shifters. |
| Propagation Delay | 1.0–4.6 ns (typ) - Supports >200 MHz bus clocking with tight timing margins. |
| Termination Resistor | 30 Ω (integrated) - Matches typical PCB trace impedance for clean edge integrity. |
| Bus Hold Current | ±75 μA to ±150 μA - Maintains defined logic state on floating inputs without external components. |
| IOFF Leakage | ±100 μA max @ VCC = 0 V - Prevents back-driving during hot-swap or power sequencing. |
Pinout & Package
TSSOP20 package (SOT360-1): 20-pin plastic thin shrink small outline, 4.4 mm body width, 0.65 mm pitch, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DIR) | Direction control input | Determines data flow direction: A→B (DIR = HIGH) or B→A (DIR = LOW). |
| 2–9 (A0–A7) | A-side I/O terminals | Bidirectional data ports connected to local bus; internally bus-held when unused. |
| 10 (GND) | Ground reference | 0 V return path for all signals and power; decoupling capacitor placement critical. |
| 11–18 (B0–B7) | B-side I/O terminals | Bidirectional data ports connected to remote bus; same bus-hold behavior as A-side. |
| 19 (OE) | Output enable input | Active LOW: OE = LOW enables outputs; OE = HIGH forces all A/B pins to high-impedance. |
| 20 (VCC) | Power supply | 3.3 V nominal supply; requires local 100 nF ceramic decoupling adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 30 Ω termination | Eliminates eight external series resistors per transceiver, reducing BOM count and layout area. |
| Bus hold inputs | Maintains valid logic levels on unconnected A/B pins without pull-up/down resistors or firmware intervention. |
| 5.5 V tolerant inputs | Enables direct connection to legacy 5 V systems without voltage translation circuitry. |
| IOFF partial power-down | Blocks current flow between A/B buses when VCC = 0 V, supporting hot-plug and system sleep modes. |
| TTL-compatible thresholds | VIH = 2.0 V min / VIL = 0.8 V max ensures reliable switching with standard TTL drivers and receivers. |
Applications
| Backplane Interfacing | Memory Expansion Bus |
|---|---|
Use Scenario: Connecting a 3.3 V FPGA I/O bank to a legacy 5 V peripheral bus via a compact TSSOP footprint. IC Role / Device Role / Timing Role: Bidirectional level-shifting transceiver with on-die termination for clean signal transitions across mixed-voltage domains. Use Value: Eliminates discrete termination resistors and level translators, reducing layer count and improving signal integrity at 100+ MHz. |
Use Scenario: Extending a microcontroller's parallel address/data bus to off-chip SRAM or Flash memory. IC Role / Device Role / Timing Role: Octal bus buffer with fast propagation (<4.6 ns typ) and bus hold to prevent floating states during chip select transitions. Use Value: Ensures deterministic bus state during memory access arbitration, preventing read corruption due to unterminated stubs. |
| Hot-Swappable Module Interface | Industrial Control Backplane |
Use Scenario: Enabling live insertion of field-replaceable I/O modules into a powered PLC backplane. IC Role / Device Role / Timing Role: Isolation transceiver with IOFF and bus hold, ensuring no current injection or undefined states during mating/unmating. Use Value: Prevents system reset or latch-up during module replacement, meeting IEC 61000-4-2 ESD and hot-swap reliability requirements. |
Use Scenario: Interfacing multiple 3.3 V sensor acquisition boards to a central 3.3 V controller over a 20 cm daisy-chained bus. IC Role / Device Role / Timing Role: Signal integrity-preserving transceiver with matched 30 Ω output impedance to suppress reflections on long traces. Use Value: Reduces overshoot/ringing by >60% compared to non-terminated buffers, enabling error-free communication at 50 MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC2245APW | No integrated termination; 24 mA drive; 1.65–3.6 V supply; no bus hold. | Requires external 33 Ω series resistors and pull-ups for unused pins; higher drive for longer traces. | Select when higher output current or wider voltage range is needed, and board space allows external components. |
| 74ALVC162245T | 16-bit version; no integrated termination; 24 mA drive; 1.65–3.6 V; bus hold included. | Double data width but larger TSSOP48 package; lacks on-die termination, increasing BOM and layout complexity. | Choose for wider bus width needs where termination can be added externally and footprint permits larger package. |
Compared with SN74LVC2245APW and 74ALVC162245T, the 74LVTH2245PW,112 uniquely integrates 30 Ω termination and bus hold in a compact 20-pin TSSOP, reducing total solution size and component count for space-constrained 8-bit bus interfaces.
Availability
74LVTH2245PW,112 is available at Aetrix Electronics and suitable for industrial control backplanes, FPGA-to-peripheral interfacing, and hot-swappable module designs requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for 74LVTH2245PW,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
Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74LVTH2245 belongs to Nexperia's LVT/H series of high-speed BiCMOS transceivers designed specifically for noise-immune, low-component-count 3.3 V bus interfacing in space- and reliability-critical applications.
FAQ
Does the 74LVTH2245PW,112 support live insertion?
Yes. Its IOFF circuitry blocks current flow between A- and B-side buses when VCC = 0 V, and bus hold maintains defined logic states on floating inputs. Combined with overvoltage-tolerant inputs (up to 5.5 V), this enables safe hot-plug operation in modular backplane systems without risk of latch-up or data corruption.
What is the purpose of the 30 Ω internal termination resistors?
The 30 Ω resistors are integrated in series with each output driver to match typical PCB trace characteristic impedance (e.g., 50–75 Ω differential pairs). This reduces signal reflections, overshoot, and ringing-especially on medium-length traces (>5 cm)-without requiring eight external resistors, simplifying layout and improving signal integrity at frequencies up to 200 MHz.
Can the 74LVTH2245PW,112 interface directly with 5 V TTL logic?
Yes. Its inputs tolerate up to 5.5 V regardless of VCC, and its output HIGH-level voltage (VOH ≥ 2.0 V @ -12 mA) meets TTL VIH minimums. When driving 5 V loads, the device operates within its specified IOL/IOH limits, and the 30 Ω termination helps dampen overshoot caused by voltage-level mismatch.
How does bus hold functionality eliminate external pull-up resistors?
Each input has an active feedback circuit that sources or sinks ~100 μA to maintain the last-valid logic state when the pin floats. For example, if A0 was last driven HIGH, bus hold applies ~75 μA of sink current to keep it near VIH (≥2.0 V); if last driven LOW, it sources ~75 μA to hold near VIL (≤0.8 V), removing need for discrete 10 kΩ pull-ups.
74LVTH2245PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVTH
- 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:
- 12mA, 12mA
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
74LVTH2245PW,112 FAQ
1.How can I place an order for 74LVTH2245PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVTH2245PW,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 74LVTH2245PW,112 reliable?
The price and inventory of 74LVTH2245PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVTH2245PW,112 is usually 5 days.
3.What payment methods are accepted for 74LVTH2245PW,112?
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4.How is shipping managed for 74LVTH2245PW,112?
74LVTH2245PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVTH2245PW,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 74LVTH2245PW,112?
For technical support, including 74LVTH2245PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVTH2245PW,112 requirements.
6.How does Aetrix verify that 74LVTH2245PW,112 is sourced from the original manufacturer or authorized distributors?
All 74LVTH2245PW,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 74LVTH2245PW,112 meets industry standards.
7.What is the process for return or replacement of 74LVTH2245PW,112?
All 74LVTH2245PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVTH2245PW,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 74LVTH2245PW,112 part is unused and in its original packaging.
Return procedure for 74LVTH2245PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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