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Nexperia USA Inc. 74LVT245BD,118
- Part No.:
- 74LVT245BD,118
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74LVT245BD,118.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:9,450
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Product details
Overview
74LVT245BD,118 from Nexperia is an 8-bit bidirectional 3-state transceiver with independent direction (DIR) and output enable (OE) controls, designed for 3.3 V bus interface between mixed-voltage systems. It supports 2.7 V to 3.6 V supply, tolerates 5.5 V inputs, delivers ±64 mA/±32 mA drive, and operates from –40 °C to +85 °C - used in FPGA-to-ASIC data bridging, memory expansion buses, and industrial PLC backplanes.
For engineers reviewing the 74LVT245BD,118 datasheet, 74LVT245BD,118 pinout, 74LVT245BD,118 application, or 74LVT245BD,118 equivalent, key selection criteria include its bus-hold inputs eliminating pull-ups, IOFF partial power-down capability, live insertion support, and 3.5 ns typical propagation delay at 3.3 V - critical for high-speed synchronous bus isolation and level translation.
Technical Context
The 74LVT245BD,118 implements a BiCMOS octal transceiver architecture with separate DIR and active-low OE inputs enabling precise control of data flow direction and bus release timing. Its bus-hold circuitry maintains valid logic states on unused A/B pins without external resistors, and IOFF protection ensures minimal leakage when VCC = 0 V.
It features overvoltage-tolerant inputs (up to 5.5 V), direct TTL-level compatibility, and dynamic performance validated at 3.3 V ± 0.3 V: tPLH/tPHL ≤ 3.5 ns, tPZH/tPHZ ≤ 5.9 ns, and tPZL/tPLZ ≤ 5.5 ns - supporting 10 MHz+ bus operation under recommended conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 3.6 V - enables stable operation across industrial 3.3 V rail tolerances and brown-out resilience. |
| Input Voltage Range | 0 V to 5.5 V - allows direct connection to 5 V legacy peripherals without level shifters. |
| Output Drive | +64 mA sink / –32 mA source - drives heavy capacitive loads (e.g., >50 pF traces) and multiple TTL inputs. |
| Propagation Delay | ≤3.5 ns (tPLH/tPHL @ 3.3 V) - supports sub-100 MHz synchronous bus timing margins. |
| Bus-Hold Current | IBHL = 75–150 μA (LOW), IBHH = –150 to –75 μA (HIGH) - actively retains logic state on floating inputs. |
| IOFF Leakage | ±100 μA @ VCC = 0 V - prevents back-powering or signal corruption during hot-swap or power sequencing. |
| Operating Temperature | –40 °C to +85 °C - qualified for industrial control, telecom infrastructure, and embedded computing environments. |
Pinout & Package
74LVT245BD,118 is packaged in SO20 (SOT163-1): plastic small outline, 20-pin, 7.5 mm body width, with standard 1.27 mm lead pitch and pin 1 index marker.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | DIR | Direction control: LOW = A→B, HIGH = B→A - enables full-duplex bus arbitration in shared-memory systems. |
| 2–9 | A0–A7 | Port A data I/O - connects to microcontroller or FPGA local bus; bus-hold enabled by default. |
| 10 | GND | Ground reference (0 V) - decoupling capacitor placement adjacent to pin 10 improves noise immunity. |
| 11–18 | B0–B7 | Port B data I/O - interfaces to peripheral bus or memory subsystem; tolerant of 5.5 V inputs. |
| 19 | OE | Active-low output enable - asserts high-impedance state on both ports simultaneously for bus sharing. |
| 20 | VCC | 3.3 V supply input - requires local 100 nF ceramic decoupling; supports IOFF during power-down. |
Key Features
| Feature | Design Value |
|---|---|
| Bus-hold inputs | Eliminates need for 10 kΩ external pull-up/pull-down resistors on A/B ports - reduces BOM count and PCB area. |
| Overvoltage-tolerant inputs | Withstands 5.5 V on A/B/DIR/OE while powered from 3.3 V - enables safe interfacing with 5 V logic without translators. |
| IOFF partial power-down | Blocks current flow between ports when VCC = 0 V - essential for live insertion/extraction in modular backplanes. |
| BiCMOS output stage | Combines bipolar speed and CMOS low static power - achieves 3.5 ns propagation with <0.2 mA ICC (disabled). |
| ESD robustness | HBM >2000 V, MM >200 V - meets industrial handling requirements without additional protection circuitry. |
Applications
| Industrial PLC Backplane Interface | FPGA-to-ASIC Data Bridge |
|---|---|
|
Use Scenario: Isolating and translating data between 3.3 V FPGA configuration logic and 5 V legacy I/O modules in programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional bus transceiver managing address/data multiplexing with precise DIR/OE timing control to prevent bus contention. Use Value: Bus-hold inputs maintain valid states during FPGA reconfiguration gaps; 5.5 V input tolerance avoids external level shifters. |
Use Scenario: Synchronizing high-speed parallel data transfers between Xilinx Artix-7 FPGA and ASIC-based signal processing engine in radar subsystems. IC Role / Device Role / Timing Role: Octal transceiver providing controlled, low-skew data path with 3.5 ns max propagation delay for 100 MHz clock domains. Use Value: IOFF protection prevents back-driving during FPGA power sequencing; ±64 mA drive handles 50 pF trace loads. |
| Memory Expansion Subsystem | Embedded CPU Local Bus Extender |
|
Use Scenario: Expanding SRAM capacity on ARM Cortex-A9-based industrial HMI by adding external 16-bit memory banks operating at 3.3 V. IC Role / Device Role / Timing Role: Direction-controlled transceiver buffering address and data lines between CPU and memory, with OE synchronized to memory access strobes. Use Value: 2.7–3.6 V supply range matches CPU core voltage tolerance; bus-hold prevents floating address lines during idle cycles. |
Use Scenario: Connecting NXP i.MX6UL processor local peripheral bus to external CAN controller and ADC interface ICs in automotive telematics gateway. IC Role / Device Role / Timing Role: Level-translating transceiver enabling 3.3 V CPU to communicate with 5 V peripherals while maintaining signal integrity. Use Value: Live insertion support allows field-replaceable module upgrades; latch-up immunity (>500 mA) ensures reliability in noisy environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC245APWR | Lower drive (+24 mA/–24 mA), 1.65–3.6 V supply, no bus-hold, no IOFF | Suitable for low-power, single-supply 3.3 V systems without hot-swap or 5 V interfacing needs | Select when cost and static power are prioritized over drive strength and mixed-voltage robustness |
| 74ALVCH16245DGGR | 16-bit, 1.65–3.6 V, no bus-hold, higher ICC, TSSOP48 package | Used in wide-data-path applications like DDR memory buffers where 8-bit width is insufficient | Choose only when 16-bit width and higher channel count justify larger footprint and increased complexity |
Compared with SN74LVC245APWR and 74ALVCH16245DGGR, the 74LVT245BD,118 uniquely combines 5.5 V input tolerance, bus-hold, IOFF, and ±64 mA drive in an 8-bit SO20 package - making it optimal for industrial backplanes requiring robustness, hot-swap, and mixed-voltage interoperability.
Availability
74LVT245BD,118 is available at Aetrix Electronics and suitable for industrial PLC backplanes, FPGA-to-ASIC bridging, and memory expansion subsystems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for 74LVT245BD,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, analog, and discrete components - delivering scalable solutions for automotive, industrial, and consumer markets.
The 74LVT245B series belongs to Nexperia's advanced LVT logic family, engineered for high-speed 3.3 V bus interfacing with mixed-voltage system compatibility, bus-hold stability, and robust ESD/latch-up performance.
FAQ
What is the maximum clock frequency supported by the 74LVT245BD,118?
The device does not operate on a clock; it is asynchronous. Its 3.5 ns typical propagation delay at 3.3 V enables reliable use in 10 MHz+ parallel bus systems with proper setup/hold timing. Maximum usable frequency depends on total bus capacitance, drive strength, and board layout - verified up to 25 MHz in 50 pF load configurations per Nexperia application notes.
Can the 74LVT245BD,118 be used to interface a 3.3 V microcontroller with a 5 V sensor?
Yes - its inputs tolerate up to 5.5 V regardless of VCC level, allowing direct connection of 5 V sensor outputs to A/B/DIR/OE pins while powered from 3.3 V. Outputs swing rail-to-rail (0 V to VCC), so external pull-ups are required if the sensor needs 5 V logic-high recognition.
Does the 74LVT245BD,118 require external pull-up resistors on unused inputs?
No - bus-hold circuitry actively maintains the last-valid logic state on all A/B port inputs, eliminating the need for external pull-up or pull-down resistors. This reduces component count, PCB space, and potential noise coupling from resistor networks.
Is the SO20 package (SOT163-1) of the 74LVT245BD,118 RoHS compliant and lead-free?
Yes - Nexperia confirms the 74LVT245BD,118 in SOT163-1 packaging meets RoHS Directive 2011/65/EU and is lead-free (Pb-free) with matte tin finish on leads. The device carries the "RoHS-compliant" marking on reel labels and datasheet ordering information table.
74LVT245BD,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVT
- Package/Case:
- 20-SOIC (0.295", 7.50mm 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:
- 32mA, 64mA
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SO
74LVT245BD,118 FAQ
1.How can I place an order for 74LVT245BD,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVT245BD,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 74LVT245BD,118 reliable?
The price and inventory of 74LVT245BD,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVT245BD,118 is usually 5 days.
3.What payment methods are accepted for 74LVT245BD,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVT245BD,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVT245BD,118?
74LVT245BD,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVT245BD,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 74LVT245BD,118?
For technical support, including 74LVT245BD,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVT245BD,118 requirements.
6.How does Aetrix verify that 74LVT245BD,118 is sourced from the original manufacturer or authorized distributors?
All 74LVT245BD,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 74LVT245BD,118 meets industry standards.
7.What is the process for return or replacement of 74LVT245BD,118?
All 74LVT245BD,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVT245BD,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 74LVT245BD,118 part is unused and in its original packaging.
Return procedure for 74LVT245BD,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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