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Nexperia USA Inc. 74LV245D,112
- Part No.:
- 74LV245D,112
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74LV245D,112.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,829
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Product details
Overview
74LV245D,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. It enables voltage-level translation and bus isolation in microcontroller peripheral interfaces.
For engineers reviewing the 74LV245D,112 datasheet, 74LV245D,112 pinout, 74LV245D,112 application, or 74LV245D,112 equivalent, key selection criteria include wide VCC range (1.0–5.5 V), guaranteed operation down to 1.0 V, 3-state output control timing (tdis ≤ 24 ns at VCC = 3.3 V), and SO20 package thermal derating above 109 °C.
Technical Context
The 74LV245D implements CMOS-based bidirectional bus buffering with independent direction (DIR) and output enable (OE) control logic. Its functional behavior is defined by three states: A→B (DIR = HIGH, OE = LOW), B→A (DIR = LOW, OE = LOW), and high-impedance (OE = HIGH), with input clamping diodes enabling safe interfacing to voltages exceeding VCC when current-limiting resistors are used.
Static performance is specified across two temperature ranges: -40 °C to +85 °C and -40 °C to +125 °C. Dynamic characteristics include propagation delay tpd ≤ 16 ns (VCC = 3.0–3.6 V, CL = 15 pF), disable time tdis ≤ 24 ns, and enable time ten ≤ 23 ns - all measured with defined test loads and voltage thresholds per IEC 60134.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.0 V to 5.5 V - supports single-supply operation across legacy 3.3 V, modern low-voltage 1.8 V/1.2 V, and 5 V systems without level shifters. |
| Propagation Delay | 7 ns typical (VCC = 3.3 V, CL = 15 pF) - ensures sub-10 ns data path latency for high-speed peripheral bus handshaking. |
| Disable Time | ≤ 24 ns (VCC = 3.0–3.6 V) - guarantees fast bus release to prevent contention during multi-master arbitration. |
| Input Voltage Thresholds | VIH = 2.0 V min (VCC = 2.7–3.6 V); VIL = 0.8 V max - compatible with TTL logic levels when VCC ≥ 2.7 V. |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - meets industrial-grade robustness requirements for board-level handling and field deployment. |
| Operating Temperature | -40 °C to +125 °C - qualified for under-hood automotive modules, industrial PLC I/O, and extended-range embedded controllers. |
| Power Dissipation | Ptot = 500 mW (SO20, Tamb ≤ 109 °C), derates 12.3 mW/K above - defines maximum continuous drive capability before thermal shutdown in compact enclosures. |
Pinout & Package
74LV245D,112 is housed in a plastic small outline package (SO20, SOT163-1) with 20 leads, 7.5 mm body width, and standard 1.27 mm lead pitch. The package supports reflow soldering per JEDEC J-STD-020 and provides adequate thermal dissipation for continuous 35 mA per output operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DIR) | Direction control input | LOW enables B→A data flow; HIGH enables A→B - determines bus master/slave role dynamically without hardware reconfiguration. |
| 2–9 (A0–A7) | Port A data I/O | 8-bit bidirectional interface connected to microcontroller or ASIC local bus; clamped inputs allow overvoltage tolerance with series resistors. |
| 10 (GND) | Ground reference | 0 V return path for all digital signals and supply current; requires low-inductance PCB connection to minimize ground bounce. |
| 11–18 (B0–B7) | Port B data I/O | 8-bit bidirectional interface connected to memory, peripheral, or backplane bus; electrically isolated from Port A when OE = HIGH. |
| 19 (OE) | Output enable (active LOW) | Drives all outputs to high-impedance state when HIGH - essential for bus sharing, hot-swap isolation, and power sequencing. |
| 20 (VCC) | Supply voltage | Single positive supply input; decoupling capacitor (100 nF ceramic) required within 5 mm of pin for stable switching noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Wide VCC range | 1.0 V to 5.5 V - eliminates need for external voltage translators in mixed-supply systems (e.g., 1.8 V MCU ↔ 3.3 V sensor bus). |
| TTL input compatibility | Valid VIH/VIL thresholds at VCC = 2.7–3.6 V - allows direct connection to legacy 5 V TTL outputs without pull-up resistors or level shifters. |
| Clamp diode protection | Integrated input clamps - permits safe interface to signals up to VCC + 0.5 V using external current-limiting resistors (e.g., 1 kΩ). |
| Low ground bounce | Typical < 0.8 V at VCC = 3.3 V - reduces signal integrity risk in dense PCB layouts with shared ground planes. |
| JEDEC compliance | JESD8-7 (1.65–1.95 V), JESD8-5 (2.3–2.7 V), JESD8C (2.7–3.6 V), JESD36 (4.5–5.5 V) - ensures interoperability with industry-standard logic families. |
Applications
| Industrial PLC Backplane Interface | Embedded Microcontroller Peripheral Expansion |
|---|---|
Use Scenario: Isolating and translating data between a 3.3 V ARM Cortex-M4 controller and legacy 5 V RS-485 transceivers on a modular I/O rack. IC Role / Device Role / Timing Role: Bidirectional bus transceiver managing A-port (MCU side) and B-port (transceiver side), with DIR set statically and OE controlled per slot enable. Use Value: Eliminates discrete level-shifting ICs while maintaining <16 ns propagation delay to meet real-time I/O scan cycle deadlines. |
Use Scenario: Expanding GPIO count on a battery-powered IoT node using an 8-bit parallel interface to a flash memory and LCD driver. IC Role / Device Role / Timing Role: 3-state buffer enabling time-multiplexed access to shared data lines, with OE synchronized to memory read/write strobes. Use Value: Reduces BOM cost versus dual 74LVC125 solutions and lowers static current (ICC ≤ 160 μA) to extend battery life. |
| Automotive Body Control Module | Test Equipment Digital Pattern Generator |
Use Scenario: Interfacing a 1.2 V automotive SoC to 3.3 V CAN transceiver diagnostics port and LIN bus peripherals in a BCM ECU. IC Role / Device Role / Timing Role: Voltage-tolerant bus transceiver with DIR toggled per protocol, OE asserted during sleep mode to isolate downstream circuits. Use Value: Supports ASIL-B-relevant thermal margin via SO20 package derating and operates reliably across -40 °C to +125 °C without derating loss. |
Use Scenario: Driving multiple DUTs simultaneously from a pattern generator FPGA with programmable voltage domains (1.2 V, 1.8 V, 3.3 V). IC Role / Device Role / Timing Role: Programmable-direction bus repeater synchronizing test vectors across voltage-isolated DUT channels using common DIR/OE control. Use Value: Enables simultaneous stimulus delivery with matched tpd (±2 ns variation) across all 8 lanes, critical for skew-sensitive boundary-scan testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal 3-state bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC245APWR | Lower VCC min (1.65 V), higher IO drive (24 mA), no clamp diodes - requires external protection for overvoltage inputs. | Optimized for 1.8 V/3.3 V only; unsuitable for 1.0–1.2 V systems or unclamped overvoltage interfaces. | Select when higher drive strength is needed and input voltage stays within VCC ±0.3 V. |
| 74ALVC245MTCX | Faster tpd (2.8 ns typ at 3.3 V), but narrower VCC (2.3–3.6 V), no 1.0 V operation, and no JESD8-7 compliance. | Targeted at high-speed digital test equipment; not suitable for ultra-low-voltage or wide-temperature industrial use. | Choose only for speed-critical applications where VCC is fixed at 3.3 V and ambient stays ≤ +85 °C. |
Compared with SN74LVC245APWR and 74ALVC245MTCX, the 74LV245D,112 uniquely supports 1.0 V operation, integrated input clamping, and full -40 °C to +125 °C qualification - making it the sole option for ultra-low-power, mixed-voltage, and extended-temperature embedded designs requiring robustness without external protection.
Availability
74LV245D,112 is available at Aetrix Electronics and suitable for industrial PLC backplane interfaces, embedded microcontroller peripheral expansion, automotive body control modules, and test equipment digital pattern generators requiring stable component supply across extended temperature and voltage ranges.
Supply support for 74LV245D,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 high-volume, high-reliability logic, analog, and MOSFET solutions, with manufacturing rooted in process technology leadership and automotive-grade quality systems.
The 74LV logic family targets low-voltage, wide-supply applications in industrial, consumer, and automotive segments - designed specifically to replace obsolete 74HC/HCT devices while extending operational range and robustness.
FAQ
Can 74LV245D,112 operate at 1.0 V with full functionality?
Yes. The device is fully specified down to VCC = 1.0 V per datasheet Section 8, including guaranteed logic thresholds, propagation delay (45 ns max), and output drive capability. Static characteristics are validated at 1.2 V minimum, but functional operation is confirmed at 1.0 V with inputs referenced to GND or VCC.
What is the maximum capacitive load the 74LV245D,112 can drive while maintaining timing specs?
The dynamic characteristics table specifies CL = 15 pF for tpd/tten/tdis measurements at VCC = 3.0–3.6 V. At CL = 50 pF, propagation delay increases to ≤ 28 ns (VCC = 2.0 V) and power dissipation rises due to CPD = 40 pF - acceptable for non-critical timing paths but may violate setup/hold in high-speed synchronous buses.
Does the SO20 package (SOT163-1) support lead-free reflow per JEDEC J-STD-020?
Yes. The SOT163-1 package is qualified for lead-free reflow with peak temperature up to 260 °C, per Nexperia's packaging documentation and JEDEC J-STD-020D compliance. Thermal profile must respect the 12.3 mW/K derating slope above 109 °C to maintain Ptot ≤ 500 mW.
How does the input clamping diode affect interface design with signals exceeding VCC?
The internal clamp diodes allow safe connection to signals up to VCC + 0.5 V, provided external current-limiting resistors restrict IIK to ≤ ±20 mA (per Table 4). For example, a 5 V signal into a 3.3 V VCC system requires ≥ 85 Ω series resistance to limit clamp current to 20 mA, preventing latch-up or damage.
74LV245D,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LV
- Package/Case:
- 20-SOIC (0.295", 7.50mm 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:
- 16mA, 16mA
- Voltage - Supply:
- 1V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SO
74LV245D,112 FAQ
1.How can I place an order for 74LV245D,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LV245D,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 74LV245D,112 reliable?
The price and inventory of 74LV245D,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LV245D,112 is usually 5 days.
3.What payment methods are accepted for 74LV245D,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LV245D,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LV245D,112?
74LV245D,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LV245D,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 74LV245D,112?
For technical support, including 74LV245D,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LV245D,112 requirements.
6.How does Aetrix verify that 74LV245D,112 is sourced from the original manufacturer or authorized distributors?
All 74LV245D,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 74LV245D,112 meets industry standards.
7.What is the process for return or replacement of 74LV245D,112?
All 74LV245D,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LV245D,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 74LV245D,112 part is unused and in its original packaging.
Return procedure for 74LV245D,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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