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NXP Semiconductors 74LV245PW,112
- Part No.:
- 74LV245PW,112
- Manufacturer:
- NXP Semiconductors
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74LV245PW,112.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:16,200
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Product details
Overview
74LV245PW,112 from Nexperia is an octal 3-state bus transceiver with bidirectional data flow controlled by DIR and active-low OE pins, operating across 1.0 V to 5.5 V supply, supporting TTL-level inputs at VCC ≥ 2.7 V, and rated for -40 °C to +125 °C ambient temperature - used in voltage-level bridging between mixed-voltage microcontroller buses and peripheral interfaces.
For engineers reviewing the 74LV245PW,112 datasheet, 74LV245PW,112 pinout, 74LV245PW,112 application, or 74LV245PW,112 equivalent, key selection criteria include its wide VCC range (1.0–5.5 V), guaranteed operation down to 1.0 V, 3.3 V propagation delay of 7 ns (CL = 15 pF), high-impedance output enable timing (ten = 10 ns, tdis = 14 ns), and TSSOP20 package thermal derating (10.0 mW/K above 100 °C).
Technical Context
The 74LV245PW,112 implements a dual-rail CMOS transceiver architecture with independent direction (DIR) and output enable (OE) control logic. Its input clamping diodes allow safe interfacing to voltages exceeding VCC when current-limiting resistors are used, and it supports both HIGH-to-LOW and LOW-to-HIGH level translation within its operating VCC window.
Functional behavior is defined by three states: (1) DIR = L, OE = L → A→B data flow; (2) DIR = H, OE = L → B→A data flow; (3) OE = H → all outputs in high-impedance OFF-state regardless of DIR. Static VIH/VIL thresholds scale with VCC per JEDEC standards JESD8-7/8-5/8C/36, and dynamic performance is characterized at CL = 15 pF and CL = 50 pF loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.0 V to 5.5 V - enables direct interface with 1.2 V, 1.8 V, 2.5 V, 3.3 V, and 5 V logic domains without level shifters. |
| tpd (A↔B) | 7 ns typical at VCC = 3.3 V, CL = 15 pF - supports >70 MHz bus toggle rates in 3.3 V systems. |
| ten / tdis | 10 ns / 14 ns typical at VCC = 3.3 V - ensures fast bus arbitration and clean hold-off during direction switching. |
| VIH (TTL) | ≥2.0 V at VCC = 2.7–3.6 V - accepts standard TTL outputs without pull-ups in mixed-logic designs. |
| IOZ (OFF-state) | ≤10 μA at VCC = 5.5 V - minimizes leakage-induced signal corruption on shared buses during tri-state. |
| ESD Rating | HBM >2000 V, CDM >1000 V - meets industrial IEC 61000-4-2 immunity requirements without external protection. |
| Operating Temp | -40 °C to +125 °C - qualified for under-hood automotive ECUs and industrial motor drives. |
Pinout & Package
TSSOP20 package (SOT360-1): 20-pin plastic thin shrink small outline, 4.4 mm body width, 0.65 mm lead pitch, 1.1 mm max height - optimized for high-density PCB layouts with improved thermal dissipation vs. SO20.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DIR) | Direction control input | Active-HIGH selects B→A data flow; LOW selects A→B - enables full-duplex bus arbitration in master/slave topologies. |
| 2–9 (A0–A7) | Port A data I/O | Bi-directional terminals tied to one bus segment; driven low-impedance or tri-stated based on OE/DIR state. |
| 10 (GND) | Ground reference | 0 V return path for all internal logic and I/O - must be low-inductance connection to minimize ground bounce (<0.8 V typical). |
| 11–18 (B0–B7) | Port B data I/O | Bi-directional terminals tied to second bus segment; electrically isolated from Port A except during active transfer. |
| 19 (OE) | Output enable (active LOW) | Pulls all A/B outputs to high-impedance when HIGH - essential for multi-drop bus contention avoidance. |
| 20 (VCC) | Supply voltage | Single power rail for entire device; decoupling capacitor (100 nF) required within 5 mm for stable 3.3 V operation. |
Key Features
| Feature | Design Value |
|---|---|
| Wide VCC support (1.0–5.5 V) | Eliminates need for external level translators in mixed-supply systems such as FPGA-to-ASIC interconnects. |
| Input clamp diodes | Enables safe 5 V-tolerant inputs at VCC = 3.3 V using series resistors - avoids damage from overvoltage transients. |
| Low ground bounce (<0.8 V) | Reduces noise coupling into adjacent analog or RF sections on shared PCB layers at 3.3 V operation. |
| JEDEC-compliant voltage thresholds | Guarantees interoperability with legacy TTL and modern LVCMOS peripherals across four standardized VCC ranges. |
| 125 °C extended temperature rating | Supports deployment in engine control units, power inverters, and industrial PLC backplanes without derating. |
Applications
| Microcontroller Bus Expansion | FPGA I/O Bridging |
|---|---|
Use Scenario: Expanding GPIO count of an ARM Cortex-M4 MCU (VCC = 3.3 V) to drive multiple SPI peripherals sharing a common data bus. IC Role / Device Role / Timing Role: Bidirectional data shuttle between MCU port and peripheral cluster, with DIR synchronized to CS# assertion and OE controlled by address decoder. Use Value: Enables single MCU port to manage eight peripherals without multiplexing delays; 7 ns tpd ensures no timing violation at 25 MHz SPI clock. | Use Scenario: Interfacing a Xilinx Artix-7 FPGA (1.8 V I/O) to legacy 3.3 V RS-485 transceivers and EEPROMs on the same PCB. IC Role / Device Role / Timing Role: Level-translating transceiver isolating FPGA I/O banks from higher-voltage peripherals while maintaining signal integrity. Use Value: Eliminates discrete MOSFET level shifters; 1.0–5.5 V VCC allows direct 3.3 V biasing, and 10 μA IOZ prevents bus leakage during FPGA configuration. |
| Industrial PLC Backplane | Automotive Body Control Module |
Use Scenario: Isolating modular I/O cards (24 V digital inputs, relay drivers) from a central 3.3 V ARM-based controller via a daisy-chained backplane. IC Role / Device Role / Timing Role: Hot-swap-safe bus buffer with OE asserted only during card initialization to prevent backplane contention. Use Value: 2000 V HBM ESD rating withstands field-installation static discharge; -40 °C to +125 °C rating ensures reliability in uncooled enclosures. | Use Scenario: Connecting a 5 V LIN transceiver and 3.3 V CAN controller to a shared diagnostic port in a vehicle door module. IC Role / Device Role / Timing Role: Voltage-domain translator enabling bidirectional diagnostic data exchange between subsystems with different supply rails. Use Value: Accepts 5 V LIN inputs at VCC = 3.3 V via clamping diodes; 14 ns tdis prevents data corruption during rapid bus reconfiguration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal 3-state transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC245APWR | VCC = 1.65–3.6 V only; no 1.0 V or 5 V support; 3.3 V tpd = 5.3 ns (faster); IOZ = 5 μA (lower leakage) | Limited to 1.8 V/2.5 V/3.3 V systems; unsuitable for 5 V legacy or ultra-low-voltage 1.2 V designs | Select when speed is critical and supply is strictly 3.3 V; avoid if mixed 1.0–5.5 V operation required. |
| 74ALVC245PW,118 | VCC = 1.65–3.6 V; 3.3 V tpd = 2.8 ns; higher ICC (max 40 μA vs. 20 μA); no 125 °C rating (only –40 °C to +85 °C) | Optimized for high-speed portable electronics; lacks extended temperature qualification for under-hood use | Choose for battery-powered handheld devices needing sub-3 ns latency; reject for automotive or industrial thermal environments. |
Compared with SN74LVC245APWR and 74ALVC245PW,118, the 74LV245PW,112 uniquely supports 1.0 V operation and 5.5 V tolerance - making it the only option for designs spanning ultra-low-power sensors to legacy 5 V controllers, while maintaining robustness across automotive and industrial temperature extremes.
Availability
74LV245PW,112 is available at Aetrix Electronics and suitable for microcontroller bus expansion, FPGA I/O bridging, industrial PLC backplane isolation, and automotive body control modules requiring stable component supply across extended temperature and voltage ranges.
Supply support for 74LV245PW,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 leading Dutch semiconductor manufacturer specializing in high-volume logic, discrete, and MOSFET components, with global manufacturing and R&D centers focused on reliability and energy efficiency.
The 74LV logic family targets low-voltage, mixed-supply digital interfacing - designed specifically for robust signal integrity and wide VCC compatibility in industrial, automotive, and computing infrastructure applications.
FAQ
Can 74LV245PW,112 operate reliably at 1.2 V supply?
Yes - the device is fully specified down to 1.0 V VCC, with guaranteed functionality including VIH/VIL thresholds, tpd, and IOZ at 1.2 V. Static characteristics (e.g., VOH ≥ 0.9 V at VCC = 1.2 V) and dynamic timing (tpd ≤ 45 ns) are validated across -40 °C to +125 °C at this voltage.
What is the maximum capacitive load the outputs can drive at 3.3 V?
At VCC = 3.3 V, the outputs are characterized up to 50 pF load capacitance (CL), with tpd = 7 ns at CL = 15 pF and CPD = 40 pF. Driving >50 pF may increase propagation delay beyond specification and requires verification of signal integrity via board-level simulation or measurement.
Does OE being active LOW mean it must be pulled down to enable outputs?
No - OE is an active-LOW input, so outputs are enabled when OE is driven LOW (≤0.8 V at VCC = 3.3 V). To disable outputs, OE must be driven HIGH (≥2.0 V) or left floating with an external pull-up resistor; internal weak pull-down is not provided.
How does the input clamping diode protect against overvoltage?
The integrated clamp diodes conduct when input voltage exceeds VCC + 0.5 V or falls below GND − 0.5 V, limiting voltage excursion. To prevent excessive current, a series resistor (e.g., 1 kΩ) must be used - ensuring IIK stays within ±20 mA absolute maximum rating per pin.
74LV245PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LV
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- 16mA, 16mA
- Voltage - Supply:
- 1V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
74LV245PW,112 FAQ
1.How can I place an order for 74LV245PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LV245PW,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 74LV245PW,112 reliable?
The price and inventory of 74LV245PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LV245PW,112 is usually 5 days.
3.What payment methods are accepted for 74LV245PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LV245PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LV245PW,112?
74LV245PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LV245PW,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 74LV245PW,112?
For technical support, including 74LV245PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LV245PW,112 requirements.
6.How does Aetrix verify that 74LV245PW,112 is sourced from the original manufacturer or authorized distributors?
All 74LV245PW,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 74LV245PW,112 meets industry standards.
7.What is the process for return or replacement of 74LV245PW,112?
All 74LV245PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LV245PW,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 74LV245PW,112 part is unused and in its original packaging.
Return procedure for 74LV245PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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