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NXP Semiconductors 74LV245DB,112
- Part No.:
- 74LV245DB,112
- Manufacturer:
- NXP Semiconductors
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74LV245DB,112.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,848
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Product details
Overview
74LV245DB,112 from Nexperia is an octal 3-state bus transceiver with bidirectional data flow controlled by DIR and active-low OE inputs. It operates across 1.0 V to 5.5 V supply, supports TTL-level inputs at VCC ≥ 2.7 V, and delivers propagation delay as low as 7 ns (VCC = 3.3 V, CL = 15 pF) in SO20 package for high-speed inter-board communication.
For engineers reviewing the 74LV245DB,112 datasheet, 74LV245DB,112 pinout, 74LV245DB,112 application, or 74LV245DB,112 equivalent, key selection criteria include wide VCC range (1.0–5.5 V), guaranteed operation down to 1.0 V, -40 °C to +125 °C temperature rating, and SO20 (SOT163-1) package compatibility with legacy 74-series footprints.
Technical Context
The 74LV245DB,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 used with current-limiting resistors.
Functional behavior is defined by three states: A→B (DIR = HIGH, OE = LOW), B→A (DIR = LOW, OE = LOW), and high-impedance tri-state (OE = HIGH). Static VIH/VIL thresholds scale with VCC per JEDEC standards JESD8-7, JESD8-5, JESD8C, and JESD36.
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 |
| Propagation Delay | 7 ns typical (VCC = 3.3 V, CL = 15 pF) - supports >70 MHz data rates in point-to-point bus applications |
| IOZ (OFF-State Current) | <10 μA at VCC = 5.5 V - ensures minimal leakage during tri-state hold, critical for low-power standby modes |
| VIH/VIL Compatibility | TTL-input compatible at VCC = 2.7–3.6 V - allows mixed-voltage system integration with legacy 5 V peripherals |
| Temperature Range | -40 °C to +125 °C - qualified for industrial and extended-temperature embedded control environments |
| ESD Protection | HBM >2000 V, CDM >1000 V - reduces need for external protection in board-level ESD-prone interfaces |
| Power Dissipation | CPD = 40 pF (VCC = 3.3 V, fi = 1 MHz) - enables accurate dynamic power estimation for thermal design |
Pinout & Package
74LV245DB,112 is supplied in SO20 plastic small outline package (SOT163-1), 20-pin, 7.5 mm body width, with standard 1.27 mm pitch and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DIR) | Direction control input | HIGH enables A→B data flow; LOW enables B→A - provides synchronous bidirectional bus arbitration |
| 2–9 (A0–A7) | Port A data I/O | 8-bit parallel interface side A; accepts/outputs logic levels referenced to VCC/GND |
| 10 (GND) | Ground reference | 0 V return path for all internal circuitry and I/O - must be low-impedance for signal integrity |
| 11–18 (B7–B0) | Port B data I/O | 8-bit parallel interface side B; pin order reversed vs A-port to simplify PCB layout routing |
| 19 (OE) | Output enable (active LOW) | Drives all outputs to high-impedance when HIGH - essential for bus sharing and conflict avoidance |
| 20 (VCC) | Supply voltage | Single rail powers entire device; supports wide range (1.0–5.5 V) without external regulators |
Key Features
| Feature | Design Value |
|---|---|
| Wide VCC operation | 1.0 V to 5.5 V - eliminates need for separate voltage translators in multi-rail systems |
| Input clamp diodes | Enables safe overvoltage tolerance on inputs up to VCC + 0.5 V with current limiting - simplifies interface to higher-voltage peripherals |
| Low ground bounce | <0.8 V typical at VCC = 3.3 V - maintains noise margin during simultaneous switching of all 8 outputs |
| JEDEC-compliant I/O | Fully compliant with 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 across industry-standard voltage domains |
| Latch-up immunity | >100 mA per JESD78 Class II Level B - prevents destructive latch-up under transient overvoltage or ESD stress |
Applications
| Industrial PLC Backplane Interface | Legacy Peripheral Bridge |
|---|---|
|
Use Scenario: Bidirectional data transfer between 3.3 V microcontroller and 5 V analog I/O module on a modular PLC rack backplane. IC Role / Device Role / Timing Role: Bus transceiver providing voltage-domain isolation and direction control synchronized to address/data strobes. Use Value: Eliminates discrete level shifters while maintaining <7 ns propagation delay for real-time I/O response within 100 ns cycle budgets. |
Use Scenario: Interfacing modern low-voltage FPGA I/O banks to legacy ISA-bus peripherals operating at 5 V TTL levels. IC Role / Device Role / Timing Role: Direction-controlled data conduit enabling FPGA to read/write 8-bit registers on legacy cards without bus contention. Use Value: TTL-compatible inputs at VCC = 3.3 V allow direct connection to 5 V peripherals; OE pin enables clean bus release during FPGA reconfiguration. |
| Automotive Body Control Module | Test Equipment Digital I/O Card |
|
Use Scenario: Isolating CAN controller MCU (3.3 V) from 12 V-compatible diagnostic port logic in a body control unit. IC Role / Device Role / Timing Role: Voltage-tolerant transceiver buffering serial command/response traffic between domains with shared ground. Use Value: Input clamping diodes and -40 °C to +125 °C rating support robust operation in under-hood environments without additional protection circuitry. |
Use Scenario: Configurable digital stimulus/response channel on automated test equipment I/O card supporting multiple DUT voltage standards. IC Role / Device Role / Timing Role: Reconfigurable 8-bit bus interface allowing software-defined direction and tri-state control per test sequence. Use Value: Single-supply flexibility (1.0–5.5 V) and precise timing specs (7 ns typ.) enable deterministic signal generation/capture across 1.2 V to 5 V DUTs. |
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 max f (100 MHz), but no 1.0 V operation; tighter VOH/VOL specs at 3.3 V | Requires ≥1.65 V supply; better for high-speed 3.3 V-only systems; lacks 1.0 V ultra-low-power capability | Select when prioritizing speed and 3.3 V performance over sub-1.65 V operation |
| 74LCX245MTCX | Wider VCC (2.0–3.6 V), lower ICC (10 μA typ.), but no 1.0 V or 5 V support; only rated to +85 °C | Suitable for 2.5 V/3.3 V portable devices; not usable in 1.0 V energy-harvesting or 5 V industrial contexts | Select for battery-powered 3.3 V systems where quiescent current is critical and temperature stays ≤85 °C |
Compared with SN74LVC245APWR and 74LCX245MTCX, the 74LV245DB,112 uniquely supports 1.0 V operation and full -40 °C to +125 °C range, making it the only option for ultra-low-voltage industrial or automotive extended-temperature designs requiring true 1.0–5.5 V interoperability.
Availability
74LV245DB,112 is available at Aetrix Electronics and suitable for industrial PLC backplanes, legacy peripheral bridges, automotive body control modules, and test equipment digital I/O cards requiring stable component supply across extended temperature and voltage ranges.
Supply support for 74LV245DB,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 delivering high-performance, reliable logic, discrete, and MOSFET solutions optimized for efficiency, miniaturization, and robustness in industrial and automotive applications.
The 74LV245DB,112 belongs to Nexperia's LV (Low-Voltage) logic family, engineered for interoperability across mixed-voltage systems and designed specifically for space-constrained, thermally demanding embedded interfaces requiring wide supply range and high noise immunity.
FAQ
What is the minimum supply voltage at which 74LV245DB,112 guarantees functional operation?
The 74LV245DB,112 guarantees full functionality-including input recognition, output drive strength, and timing specifications-down to 1.0 V VCC, as confirmed in Section 8 (Recommended Operating Conditions) of the Rev. 6 datasheet. This is distinct from static characterization, which begins at 1.2 V, but functional operation is validated from 1.0 V with inputs referenced to GND or VCC.
Can 74LV245DB,112 safely interface a 5 V TTL output to a 3.3 V microcontroller input?
Yes-when powered at VCC = 3.3 V, the 74LV245DB,112 accepts TTL input levels (VIH ≥ 2.0 V, VIL ≤ 0.8 V) per Table 6, and its input clamping diodes allow safe operation with 5 V signals if current-limiting resistors limit IIK to ±20 mA. No external level shifter is required.
Does 74LV245DB,112 support hot insertion or live bus swapping?
No-the device lacks explicit hot-swap protection features such as power-up sequencing control, Ioff (power-off protection), or bus-hold. Its absolute maximum ratings permit brief overvoltage exposure only with current limiting; sustained live insertion into an active bus may exceed IOZ or clamping current limits and is not recommended without external safeguards.
How does the SO20 (SOT163-1) package of 74LV245DB,112 differ from TSSOP20 variants like 74LV245PW?
The 74LV245DB,112 uses SO20 (SOT163-1): 7.5 mm body width, 1.27 mm lead pitch, gull-wing leads-optimized for wave soldering and mechanical robustness in industrial PCBs. In contrast, 74LV245PW uses TSSOP20 (SOT360-1): 4.4 mm width, 0.65 mm pitch-smaller footprint but more sensitive to solder joint fatigue and thermal cycling stress.
74LV245DB,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LV
- Package/Case:
- 20-SSOP (0.209", 5.30mm 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-SSOP
74LV245DB,112 FAQ
1.How can I place an order for 74LV245DB,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LV245DB,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 74LV245DB,112 reliable?
The price and inventory of 74LV245DB,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LV245DB,112 is usually 5 days.
3.What payment methods are accepted for 74LV245DB,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LV245DB,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LV245DB,112?
74LV245DB,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LV245DB,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 74LV245DB,112?
For technical support, including 74LV245DB,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LV245DB,112 requirements.
6.How does Aetrix verify that 74LV245DB,112 is sourced from the original manufacturer or authorized distributors?
All 74LV245DB,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 74LV245DB,112 meets industry standards.
7.What is the process for return or replacement of 74LV245DB,112?
All 74LV245DB,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LV245DB,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 74LV245DB,112 part is unused and in its original packaging.
Return procedure for 74LV245DB,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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