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Nexperia USA Inc. 74LV245D,118
- Part No.:
- 74LV245D,118
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74LV245D,118.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,335
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Product details
Overview
74LV245D,118 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 74LV245D,118 datasheet, 74LV245D,118 pinout, 74LV245D,118 application, or 74LV245D,118 equivalent, key selection criteria include its wide VCC range (1.0–5.5 V), guaranteed operation down to 1.0 V, 3-state output control timing (tdis ≤ 24 ns at 3.3 V), and SO20 package compatibility with legacy 74-series board layouts.
Technical Context
The 74LV245D implements CMOS-based bidirectional bus buffering with separate 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.
Functional behavior is defined by three states: DIR = L enables A→B data flow; DIR = H enables B→A flow; OE = H forces all outputs into high-impedance OFF-state regardless of DIR. Propagation delay ranges from 7 ns (VCC = 3.3 V, CL = 15 pF) to 45 ns (VCC = 1.2 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.0 V to 5.5 V - supports 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 at VCC = 3.3 V, CL = 15 pF - enables reliable operation in high-speed parallel bus systems up to ~70 MHz. |
| Output Enable Time | 10 ns typical at VCC = 3.3 V - ensures fast bus arbitration and multi-master contention resolution. |
| Input Voltage Thresholds | VIH = 2.0 V min at VCC = 2.7–3.6 V; VIL = 0.8 V max - guarantees TTL-compatible recognition at 3.3 V supply. |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - provides robust handling during PCB assembly and field service without external protection. |
| Operating Temperature | -40 °C to +125 °C - qualified for under-hood automotive modules, industrial PLC backplanes, and extended-temperature embedded controllers. |
| Power Dissipation | CPD = 40 pF at VCC = 3.3 V - enables accurate dynamic power estimation (PD = CPD × VCC² × fi × N) for thermal design. |
Pinout & Package
74LV245D,118 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 - compatible with IPC-7351B SOIC-20 land patterns and wave/reflow soldering profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DIR) | Direction control input | LOW enables data flow from A-side (pins 2–9) to B-side (pins 11–18); HIGH reverses direction. |
| 2–9 (A0–A7) | Port A I/O terminals | Bidirectional data lines tied to one bus segment; internally connected to transceiver core via DIR-controlled switches. |
| 10 (GND) | Ground reference | 0 V return path for all internal circuitry and I/O current; must be low-impedance for noise immunity. |
| 11–18 (B0–B7) | Port B I/O terminals | Bidirectional data lines tied to second bus segment; function mirrors A-side based on DIR state. |
| 19 (OE) | Active-low output enable | Logic HIGH disables all outputs into high-impedance state; essential for bus sharing and hot-swap isolation. |
| 20 (VCC) | Supply voltage input | Primary power rail; supports 1.0–5.5 V operation; decoupling capacitor required within 10 mm of this pin. |
Key Features
| Feature | Design Value |
|---|---|
| Wide VCC range | 1.0 V to 5.5 V operation - eliminates need for external level translators when interfacing 1.2 V SoCs to 5 V peripherals. |
| TTL input compatibility | Accepts TTL logic levels at VCC = 2.7–3.6 V - allows direct connection to legacy 5 V TTL outputs without pull-up resistors or buffers. |
| Clamp diode protection | Integrated input clamp diodes - permits safe overvoltage tolerance (e.g., 5 V signals into 3.3 V domain) when series resistors limit current to <20 mA. |
| Low ground bounce | Typical <0.8 V at VCC = 3.3 V - reduces switching noise coupling into analog sections and improves signal integrity on shared PCB planes. |
| JEDEC compliance | Meets 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. |
Applications
| Industrial PLC Backplane | Embedded Microcontroller Bus Bridge |
|---|---|
|
Use Scenario: Isolating and translating data between a 3.3 V ARM Cortex-M7 CPU bus and legacy 5 V I/O expansion modules. IC Role / Device Role / Timing Role: Bidirectional bus transceiver enabling synchronous read/write cycles with sub-10 ns propagation delay and precise OE-controlled bus release timing. Use Value: Eliminates discrete level-shifting ICs while maintaining signal integrity and meeting real-time cycle time budgets under 50 ns. |
Use Scenario: Interfacing a 1.8 V FPGA configuration interface to a 2.5 V DDR2 memory controller bus. IC Role / Device Role / Timing Role: Voltage-domain translator with DIR-controlled direction and OE-gated tristate for conflict-free bus arbitration during FPGA reconfiguration. Use Value: Reduces BOM count by replacing dual-rail translators and simplifies layout with single SO20 footprint supporting both voltage rails. |
| Automotive Body Control Module | Test Equipment Digital I/O Interface |
|
Use Scenario: Buffering sensor data from multiple 5 V analog front-end ICs to a 3.3 V MCU ADC interface in under-hood ECUs. IC Role / Device Role / Timing Role: Robust 3-state transceiver with -40 °C to +125 °C rating and HBM >2000 V ESD - handles noisy engine bay environments and hot-swap diagnostics. Use Value: Enables reliable signal routing without additional transient suppression components, reducing failure rate in field deployments. |
Use Scenario: Providing programmable digital stimulus and capture capability between a 5 V test controller and DUTs operating at 1.2 V, 1.8 V, or 3.3 V. IC Role / Device Role / Timing Role: Reconfigurable bus interface with DIR/OE software control - supports both driving and sampling modes per channel pair during functional test sequences. Use Value: Delivers deterministic timing (tdis ≤ 24 ns) and voltage flexibility across test vectors, improving test coverage and reducing fixture complexity. |
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 ICC max (50 mA), TSSOP20 only - no SO20 option. | Optimized for 1.8 V/3.3 V systems; lacks 1.0–1.2 V support and automotive temp grade. | Select when operating exclusively above 1.65 V and requiring tighter propagation delay variation (±0.5 ns vs ±2 ns). |
| 74ALVC245MTCX | Faster tpd (5.2 ns typ at 3.3 V), but narrower VCC (2.3–3.6 V), no 1.0 V support, and -40 °C to +85 °C only. | Suitable for high-speed 3.3 V-only designs; not viable for mixed-voltage or extended-temp use cases. | Choose only if system requires <6 ns delay and operates strictly within 2.3–3.6 V at commercial temperatures. |
Compared with SN74LVC245APWR and 74ALVC245MTCX, the 74LV245D,118 uniquely supports 1.0 V operation and full -40 °C to +125 °C qualification in SO20 packaging - making it the sole choice for ultra-low-voltage industrial and automotive bus bridging where legacy footprint and extended voltage/temp margins are mandatory.
Availability
74LV245D,118 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, embedded microcontroller bus bridges, and test equipment digital I/O interfaces requiring stable component supply across extended temperature and voltage ranges.
Supply support for 74LV245D,118 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, discrete, and MOSFET solutions - delivering energy-efficient, scalable components for automotive, industrial, and consumer markets.
The 74LV245 belongs to Nexperia's LV (Low Voltage) logic family, engineered specifically for mixed-voltage system interconnects where robustness, wide supply range, and extended temperature operation are critical design requirements.
FAQ
Can the 74LV245D,118 operate reliably at 1.0 V supply?
Yes - the device is fully specified and tested down to VCC = 1.0 V per JEDEC JESD8-7, with guaranteed functionality including input recognition, output drive strength, and propagation delay (45 ns max). Static characteristics such as VIH/VIL and VOH/VOL remain valid at this minimum supply, though timing margins tighten.
What is the maximum capacitive load the 74LV245D,118 can drive while maintaining timing specs?
The datasheet specifies dynamic performance at CL = 15 pF (for VCC = 3.0–3.6 V) and CL = 50 pF (for VCC = 1.2–2.7 V and ≥4.5 V). At 3.3 V, tpd remains ≤9 ns up to 15 pF; beyond that, delay increases linearly - e.g., ~12 ns at 30 pF. Output drive capability (±8 mA at VOL/VOH) supports loads up to ~40 pF with acceptable signal integrity.
Does the 74LV245D,118 require external pull-up or pull-down resistors on DIR or OE?
No - DIR and OE have CMOS-compatible input structure with negligible leakage (<1 μA). However, OE must be actively driven LOW to enable outputs; leaving it floating risks undefined output states. For fail-safe operation, tie OE to GND via a 10 kΩ resistor if controlled by an open-drain driver, or use a dedicated GPIO with strong drive.
How does the 74LV245D,118 handle input voltages exceeding VCC?
Internal clamp diodes on all inputs allow safe operation with VI up to VCC + 0.5 V, provided input current is limited to ±20 mA. For example, applying 5 V to an A-input while VCC = 3.3 V is permissible with a 220 Ω series resistor (I ≈ 7.7 mA), preventing latch-up and ensuring long-term reliability per JESD78 Class II Level B.
74LV245D,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LV
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- 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-SO
74LV245D,118 FAQ
1.How can I place an order for 74LV245D,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LV245D,118 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,118 reliable?
The price and inventory of 74LV245D,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LV245D,118 is usually 5 days.
3.What payment methods are accepted for 74LV245D,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LV245D,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LV245D,118?
74LV245D,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LV245D,118 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,118?
For technical support, including 74LV245D,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LV245D,118 requirements.
6.How does Aetrix verify that 74LV245D,118 is sourced from the original manufacturer or authorized distributors?
All 74LV245D,118 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,118 meets industry standards.
7.What is the process for return or replacement of 74LV245D,118?
All 74LV245D,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74LV245D,118, 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,118 part is unused and in its original packaging.
Return procedure for 74LV245D,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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