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Nexperia USA Inc. 74LV245APWJ
- Part No.:
- 74LV245APWJ
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74LV245APWJ.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:256
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Product details
Overview
74LV245APWJ from Nexperia is an octal 3-state bus transceiver with bidirectional data flow control via DIR pin and active-low output enable (OE). It operates from 2.0 V to 5.5 V, delivers 6.5 ns max propagation delay at 5 V, supports mixed-voltage translation between 2.3 V and 5.5 V domains, and features IOFF partial power-down protection. It is used in industrial backplane interfaces requiring level-shifting and bus isolation.
For engineers reviewing the 74LV245APWJ datasheet, 74LV245APWJ pinout, 74LV245APWJ application, or 74LV245APWJ equivalent, key selection criteria include its 20-pin TSSOP package, Schmitt-trigger inputs for noise immunity, ±0.25 μA OFF-state leakage, -40 °C to +125 °C operating range, and compatibility with 3.3 V/5 V mixed-signal systems.
Technical Context
The 74LV245APWJ implements dual-bank bidirectional data transfer with independent direction (DIR) and output-enable (OE) control signals. Its IOFF circuit actively disables outputs during power-down, preventing backflow current when VCC = 0 V.
Schmitt-trigger inputs provide hysteresis (typ. 0.4 V at 3.3 V), enabling robust operation with slow-rising signals. Static input thresholds scale with VCC (VIH = 0.7VCC, VIL = 0.3VCC), ensuring reliable logic recognition across the full 2.0–5.5 V supply range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 2.0 V to 5.5 V - enables direct interface between 2.3 V, 3.3 V, and 5 V logic domains without external level shifters |
| Propagation delay (tpd) | 6.5 ns max at VCC = 5 V, CL = 50 pF - supports >100 MHz bus toggle rates in high-speed digital backplanes |
| IOFF leakage | 5 μA max at VCC = 0 V - prevents damaging current flow during hot-insertion or partial system power-down |
| Input hysteresis | Typ. 0.4 V at VCC = 3.3 V - rejects noise on slow-rising control lines (e.g., reset, enable) in noisy industrial environments |
| Operating temperature | -40 °C to +125 °C - qualified for under-hood automotive modules and industrial motor drives |
| ESD rating | HBM >3000 V, CDM >2000 V - withstands handling and board-level ESD events without latch-up or parametric shift |
| Output drive | ±8 mA at VCC = 3.0 V - drives standard CMOS loads (≤10 pF) across full temperature range with guaranteed VOL/VOH margins |
Pinout & Package
TSSOP20 (SOT360-1) package: 20-pin plastic thin shrink small outline, 4.4 mm body width, 0.65 mm pitch, 1.1 mm max height - compatible with standard SMT reflow profiles and automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DIR) | Direction control input | Drives internal bus switch matrix: LOW enables A→B flow; HIGH enables B→A flow |
| 2–9 (A0–A7) | Port A I/O terminals | 8-bit bidirectional data port with overvoltage-tolerant inputs (up to 7.0 V) |
| 10 (GND) | Ground reference | Primary return path for all I/O and supply currents; must be low-inductance connection |
| 11–18 (B0–B7) | Port B I/O terminals | 8-bit bidirectional data port with identical electrical specs to Port A |
| 19 (OE) | Output enable (active LOW) | Asserting LOW enables bidirectional data transfer; HIGH forces all A/B pins into high-Z state |
| 20 (VCC) | Power supply | Single-supply rail supporting 2.0–5.5 V; decoupling capacitor required within 5 mm |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-voltage translation | Ports A and B operate independently at different VCC-compatible voltages (e.g., A at 3.3 V, B at 5 V) without external components |
| Partial power-down (IOFF) | Outputs automatically enter high-Z when VCC = 0 V, eliminating backfeed risk during hot-swap or firmware reset sequences |
| Schmitt-trigger inputs | Input hysteresis ≥0.4 V ensures clean signal edge detection on noisy PCB traces or long cables |
| Overvoltage-tolerant inputs | Withstands up to 7.0 V on any input pin regardless of VCC - enables safe interfacing with legacy 5 V peripherals |
| Latch-up immunity | Exceeds 250 mA per JESD78 Class II - prevents destructive latch-up during transient overvoltage events |
Applications
| Industrial PLC Backplane | Automotive Body Control Module |
|---|---|
|
Use Scenario: Isolating microcontroller GPIO banks from high-noise CAN/LIN transceiver sections while sharing a common 3.3 V domain. IC Role / Device Role / Timing Role: Bidirectional level translator and bus isolator between MCU and peripheral ICs; provides timing-transparent data pass-through with <6.5 ns latency. Use Value: Eliminates need for discrete MOSFET translators; IOFF prevents current backflow during MCU sleep mode, reducing quiescent current by >15 μA. |
Use Scenario: Interfacing 5 V sensor inputs (e.g., analog front-end, LIN PHY) to a 3.3 V automotive MCU in body electronics. IC Role / Device Role / Timing Role: Voltage-domain bridge with direction control synchronized to MCU SPI frame boundaries; Schmitt inputs reject engine-bay EMI. Use Value: Enables single-chip translation without external pull-ups or resistors; -40 °C to +125 °C rating matches under-dash thermal requirements. |
| Test Equipment Digital I/O Card | Medical Diagnostic Data Acquisition |
|
Use Scenario: Configurable 8-bit digital I/O expansion for modular benchtop test instruments requiring programmable input/output polarity and isolation. IC Role / Device Role / Timing Role: Reconfigurable bus transceiver controlled by FPGA; OE and DIR pins driven directly from FPGA GPIO with no glue logic. Use Value: Reduces PCB layer count by replacing two 74LVC245 variants; 0.65 mm pitch TSSOP fits high-density instrument backplanes. |
Use Scenario: Buffering ADC/DAC serial interface lines (e.g., SPI clock/data) between isolated patient-side and host-side domains in portable ultrasound units. IC Role / Device Role / Timing Role: Signal integrity enhancer with low-skew (<1 ns) propagation; Schmitt inputs suppress coupling noise from adjacent RF circuits. Use Value: Meets IEC 60601-1 creepage/clearance requirements via galvanic isolation at board level; 2.0 V min VCC supports ultra-low-power sleep modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC245APWR | Wider VCC range (1.65–3.6 V); no IOFF; 3.3 V only; 5.8 ns tpd at 3.3 V | Not suitable for mixed 5 V/3.3 V systems or partial power-down use cases | Select if operating exclusively in 3.3 V domain with tighter timing budget and no power sequencing constraints |
| 74ALVC245PW | Faster tpd (3.2 ns at 3.3 V); higher ICC (20 μA typical); no IOFF; -40 °C to +85 °C only | Lacks extended temperature and power-down capability required for automotive or industrial deployment | Choose only for commercial-grade, high-speed FPGA interconnect where ambient temperature stays below 85 °C |
Compared with SN74LVC245APWR and 74ALVC245PW, the 74LV245APWJ uniquely combines 2.0–5.5 V operation, IOFF protection, and -40 °C to +125 °C qualification - making it the sole option for robust mixed-voltage industrial and automotive bus isolation.
Availability
74LV245APWJ is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, test equipment digital I/O cards, and medical diagnostic data acquisition systems requiring stable component supply across extended temperature and mixed-voltage conditions.
Supply support for 74LV245APWJ 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 consumer applications.
The 74LV245APWJ belongs to Nexperia's LV logic family, engineered for low-voltage mixed-signal interfacing with emphasis on robustness in harsh environments, power sequencing resilience, and seamless voltage translation across heterogeneous subsystems.
FAQ
What is the maximum allowable input voltage on A/B pins when VCC = 0 V?
The 74LV245APWJ allows up to 7.0 V on any input pin (A0–A7, B0–B7, DIR, OE) regardless of VCC state, per Absolute Maximum Ratings Table 4. This overvoltage tolerance enables safe connection to live buses during power-up/down sequences without external clamping diodes.
Does the device support hot-swap operation with powered-down VCC?
Yes - the integrated IOFF circuit disables all outputs when VCC = 0 V, limiting OFF-state leakage to ≤5 μA. This prevents backflow current from live A/B buses into the unpowered IC, satisfying hot-swap requirements in modular industrial systems per JEDEC JESD78 Class II latch-up immunity.
How does Schmitt-trigger input action improve noise immunity?
Schmitt-trigger inputs provide ~0.4 V hysteresis at 3.3 V supply, meaning VIH ≈ 2.3 V and VIL ≈ 1.9 V. This window rejects noise spikes <0.4 V amplitude and tolerates slow rise/fall times up to 200 ns/V, making the device resilient to EMI in motor-drive or switching-power-supply environments.
Can OE and DIR be tied together for unidirectional operation?
No - OE and DIR serve independent functions: OE controls output enable/disable (active LOW), while DIR selects data direction (LOW = A→B, HIGH = B→A). Tying them violates functional table behavior and may cause undefined bus states. They must be driven separately from MCU GPIO or FPGA control logic.
74LV245APWJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LV
- Package/Case:
- 20-TSSOP (0.173", 4.40mm 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:
- 2V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
74LV245APWJ FAQ
1.How can I place an order for 74LV245APWJ through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LV245APWJ 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 74LV245APWJ reliable?
The price and inventory of 74LV245APWJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LV245APWJ is usually 5 days.
3.What payment methods are accepted for 74LV245APWJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LV245APWJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LV245APWJ?
74LV245APWJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LV245APWJ 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 74LV245APWJ?
For technical support, including 74LV245APWJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LV245APWJ requirements.
6.How does Aetrix verify that 74LV245APWJ is sourced from the original manufacturer or authorized distributors?
All 74LV245APWJ 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 74LV245APWJ meets industry standards.
7.What is the process for return or replacement of 74LV245APWJ?
All 74LV245APWJ units undergo pre-shipment inspection (PSI). If there is an issue with 74LV245APWJ, 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 74LV245APWJ part is unused and in its original packaging.
Return procedure for 74LV245APWJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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