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NXP Semiconductors 74LV245N,112
- Part No.:
- 74LV245N,112
- Manufacturer:
- NXP Semiconductors
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
74LV245N,112.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,553
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Product details
Overview
74LV245N,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 delays as low as 7 ns (VCC = 3.3 V, CL = 15 pF). It is used in voltage-level translation and bidirectional bus isolation in industrial control backplanes.
For engineers reviewing the 74LV245N,112 datasheet, 74LV245N,112 pinout, 74LV245N,112 application, or 74LV245N,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 package compatibility with legacy 74-series footprints.
Technical Context
The 74LV245N,112 implements a CMOS-based octal transceiver architecture with independent direction (DIR) and output enable (OE) control logic. Its dual-bus interface supports A-to-B or B-to-A data transfer depending on DIR state, while OE asserts high-impedance on all eight outputs when HIGH.
Input clamp diodes allow safe interfacing to voltages exceeding VCC when current-limiting resistors are used. Static characteristics are fully specified from -40 °C to +125 °C, with VIH/VIL thresholds compliant to JEDEC standards JESD8-7, JESD8-5, JESD8C, and JESD36 across discrete VCC ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage (VCC) | 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 (tpd) | 7 ns typical (VCC = 3.3 V, CL = 15 pF) - supports >100 MHz bus toggle rates in high-speed digital backplanes. |
| Output Drive Strength | ±8 mA (VCC = 3.0 V), ±16 mA (VCC = 4.5 V) - sufficient to drive standard 50 pF loads across industrial temperature range. |
| Input Thresholds | TTL-compatible VIH ≥ 2.0 V / VIL ≤ 0.8 V at VCC = 2.7–3.6 V - ensures reliable recognition of legacy 3.3 V TTL signals. |
| Operating Temperature | -40 °C to +125 °C - qualified for under-hood automotive modules, industrial PLC I/O, and telecom line cards. |
| ESD Robustness | HBM > 2000 V, CDM > 1000 V - reduces field failure risk during PCB handling and system integration. |
| Power Dissipation | CPD = 40 pF (VCC = 3.3 V, fi = 1 MHz) - enables low-static-power operation in battery-backed or thermally constrained systems. |
Pinout & Package
74LV245N,112 is supplied in SO20 (SOT163-1) plastic small outline package: 20-pin, 7.5 mm body width, 1.27 mm pitch, gull-wing leads. Pin 1 index located at top-left corner with notch marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | DIR | Direction control input: LOW enables A→B transfer; HIGH enables B→A transfer. |
| 2–9 | A0–A7 | Port A data I/O: bidirectional bus interface side A, compatible with 1.0–5.5 V logic levels. |
| 10 | GND | Ground reference (0 V) - must be low-inductance connection to minimize ground bounce. |
| 11–18 | B0–B7 | Port B data I/O: bidirectional bus interface side B, electrically identical to A-side. |
| 19 | OE | Active-low output enable: HIGH forces all A/B outputs into high-impedance state. |
| 20 | VCC | Positive supply rail - decoupling capacitor (100 nF) required within 10 mm of this pin. |
Key Features
| Feature | Design Value |
|---|---|
| Wide VCC range (1.0–5.5 V) | Eliminates need for external level translators when interfacing mixed-voltage subsystems (e.g., 1.8 V FPGA to 3.3 V peripheral bus). |
| Clamp diode-equipped inputs | Permits safe connection to signals up to VCC + 0.5 V using series current-limiting resistors - critical for hot-swap or fault-tolerant backplane designs. |
| Low ground bounce (< 0.8 V) | Reduces noise coupling into adjacent analog or RF circuits during simultaneous 8-bit switching events at 3.3 V. |
| JEDEC-compliant voltage thresholds | Ensures interoperability with industry-standard logic families across four distinct VCC operating bands per JESD8-7/5/C/36. |
| High-temperature operation (+125 °C) | Supports deployment in engine control units, power converters, and enclosed industrial enclosures without derating. |
Applications
| Industrial PLC Backplane | Embedded Microcontroller Bus Expansion |
|---|---|
Use Scenario: Bidirectional data exchange between CPU module and I/O expansion cards in modular automation controllers. IC Role / Device Role / Timing Role: Isolates and translates 3.3 V microcontroller address/data bus to 5 V legacy I/O modules while preventing bus contention. Use Value: Enables plug-and-play compatibility across multiple generations of I/O cards without redesigning bus termination or voltage regulation. |
Use Scenario: Extending GPIO count and memory-mapped peripherals for ARM Cortex-M4-based edge sensor nodes. IC Role / Device Role / Timing Role: Provides low-latency, 8-bit parallel path between MCU and external SRAM or display controller with configurable direction. Use Value: Delivers sub-10 ns propagation delay at 3.3 V to maintain timing margins in real-time sensor fusion firmware. |
| Automotive Body Control Module | Test Equipment Digital Pattern Generator |
Use Scenario: Interfacing 1.2 V ASIC core logic to 3.3 V CAN transceiver and LIN physical layer drivers in BCM ECUs. IC Role / Device Role / Timing Role: Level-translates bidirectional control signals (e.g., reset, interrupt, clock enable) while maintaining ESD immunity. Use Value: Meets AEC-Q100 stress requirements via -40 °C to +125 °C qualification and >2000 V HBM ESD rating. |
Use Scenario: Generating synchronized 8-bit stimulus patterns for DUT testing in automated test equipment (ATE) racks. IC Role / Device Role / Timing Role: Buffers and isolates pattern generator outputs from variable capacitive loads of DUT sockets and fixtures. Use Value: Maintains signal integrity with < 0.8 V ground bounce and 7 ns tpd, enabling accurate timing capture at 100+ MHz test frequencies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVC245A,118 | Lower ICC (max 10 μA vs. 160 μA), tighter VOH/VOL specs at 3.3 V, but only rated to +85 °C. | Suitable for commercial-grade portable devices where ambient temperature stays below 85 °C. | Select when ultra-low static power and tighter output voltage tolerances are prioritized over extended temperature range. |
| SN74LV245APWR | Same electrical specs and pinout, but TSSOP20 (SOT360-1) package - 4.4 mm body width vs. SO20's 7.5 mm. | Preferred for space-constrained PCBs where footprint area is limited and thermal dissipation is managed via copper pour. | Select when board real estate is critical and SO20 reflow profile compatibility is not required. |
Compared with 74LV245N,112, the 74LVC245A,118 trades extended temperature capability for lower quiescent current and tighter DC specs, while the SN74LV245APWR offers identical functionality in a smaller TSSOP20 footprint - neither is pin-compatible with the SO20-packaged 74LV245N,112 due to differing package dimensions and thermal pad presence.
Availability
74LV245N,112 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, embedded microcontroller bus expansion, and test equipment digital pattern generators requiring stable component supply across extended temperature and voltage ranges.
Supply support for 74LV245N,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 logic, discrete, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial, automotive, and computing applications.
The 74LV245N,112 belongs to Nexperia's LV (Low-Voltage) logic family, designed specifically for robust bidirectional bus interfacing in mixed-voltage systems where wide VCC tolerance and high-temperature operation are mandatory.
FAQ
What is the maximum recommended supply voltage for 74LV245N,112?
The absolute maximum supply voltage (VCC) for 74LV245N,112 is +7.0 V, but the recommended operating range is 1.0 V to 5.5 V per datasheet Table 5. Operation above 5.5 V risks permanent damage and violates JEDEC compliance boundaries; sustained use at 7.0 V is prohibited even for transient conditions.
Does 74LV245N,112 support true bidirectional data flow without external logic?
Yes, 74LV245N,112 supports true bidirectional data flow using its dedicated DIR pin: when DIR = LOW, data flows from A-port to B-port; when DIR = HIGH, data flows from B-port to A-port. No external gates or control sequencing are needed - direction is set solely by the DIR input state.
Can 74LV245N,112 interface 1.2 V logic with 3.3 V logic safely?
Yes, 74LV245N,112 safely interfaces 1.2 V and 3.3 V logic because its inputs accept VIH ≥ 0.9 V (at VCC = 1.2 V) and VIL ≤ 0.3 V, while outputs deliver VOH ≥ 1.2 V and VOL ≤ 0.2 V under load - meeting both sides' noise margin requirements without external biasing or clamping.
Is the 74LV245N,112 pinout compatible with standard 74-series SO20 packages?
Yes, 74LV245N,112 uses the industry-standard SO20 (SOT163-1) pinout defined in JEDEC MS-013, matching pin-for-pin placement of legacy 74LS245 and 74HC245 devices - enabling drop-in replacement in existing PCB layouts without redesign.
What is the disable time (tdis) specification for 74LV245N,112 at 3.3 V?
At VCC = 3.3 V, the disable time (tdis) for 74LV245N,112 is 14 ns maximum (from OE HIGH to outputs reaching high-impedance), per Table 7. This value is measured with CL = 15 pF and applies across the full -40 °C to +125 °C operating range.
74LV245N,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LV
- Package/Case:
- 20-DIP (0.300", 7.62mm)
- 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:
- Through Hole
- Supplier Device Package:
- 20-DIP
74LV245N,112 FAQ
1.How can I place an order for 74LV245N,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LV245N,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 74LV245N,112 reliable?
The price and inventory of 74LV245N,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LV245N,112 is usually 5 days.
3.What payment methods are accepted for 74LV245N,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LV245N,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LV245N,112?
74LV245N,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LV245N,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 74LV245N,112?
For technical support, including 74LV245N,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LV245N,112 requirements.
6.How does Aetrix verify that 74LV245N,112 is sourced from the original manufacturer or authorized distributors?
All 74LV245N,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 74LV245N,112 meets industry standards.
7.What is the process for return or replacement of 74LV245N,112?
All 74LV245N,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LV245N,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 74LV245N,112 part is unused and in its original packaging.
Return procedure for 74LV245N,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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