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Nexperia USA Inc. 74LVC4245APW,118
- Part No.:
- 74LVC4245APW,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
74LVC4245APW,118.pdf
- Description:
- IC TRANSLATOR BIDIR 24TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:179,026
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Product details
Overview
74LVC4245APW,118 from Nexperia is an octal dual-supply translating transceiver with 3-state bus-compatible outputs in both directions, designed for bidirectional level translation between 3 V (VCC(B)) and 5 V (VCC(A)) buses. It features independent DIR and active-low OE controls, Schmitt-trigger inputs for noise immunity, and operates across -40 °C to +125 °C. Used in mixed-voltage microcontroller I/O expansion and legacy 5 V peripheral interfacing.
For engineers reviewing the 74LVC4245APW,118 datasheet, 74LVC4245APW,118 pinout, 74LVC4245APW,118 application, or 74LVC4245APW,118 equivalent, key selection considerations include VCC(A)/VCC(B) supply independence, propagation delay ≤8.5 ns (B→A at 3.6 V), 5 V-tolerant control inputs up to 5.5 V, and TSSOP24 thermal performance with 12.4 mW/K derating above 110 °C.
Technical Context
This device implements a dual-rail CMOS transceiver architecture with separate VCC(A) (1.5–5.5 V) and VCC(B) (1.5–3.6 V) supplies, enforcing VCC(A) ≥ VCC(B) during normal operation. Direction control is synchronous and edge-independent: DIR determines data flow (A↔B), while OE enables/disables all outputs simultaneously into high-impedance state.
Schmitt-trigger inputs on DIR, OE, and all data pins provide hysteresis (typ. 0.3–0.5 V) to tolerate slow-rising signals and reduce noise-induced switching. In suspend mode (either VCC = 0 V), internal isolation blocks current flow between supplies, eliminating cross-rail leakage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC(A) Range | 1.5 V to 5.5 V - powers A-side (5 V bus) I/O; supports TTL-level compatibility at 3.3 V and full 5 V logic swing |
| VCC(B) Range | 1.5 V to 3.6 V - powers B-side (3 V bus) I/O; enables interface with 2.5 V/3.3 V microcontrollers and FPGAs |
| tPHL / tPLH (B→A) | 1.0–8.0 ns - ensures sub-8.5 ns worst-case propagation from 3 V bus to 5 V bus, critical for high-speed address/data handshaking |
| IOZ (OFF-state current) | ±5 μA max at 125 °C - guarantees robust bus isolation during 3-state hold, minimizing standby power and crosstalk |
| VIH/VIL (control inputs) | 0–5.5 V input tolerance - allows direct connection of 5 V control signals (DIR, OE) without external resistors or translators |
| ESD Rating (HBM) | >2000 V - meets JEDEC JS-001 Class 2, enabling reliable handling in non-ESD-controlled assembly environments |
| Operating Temp | -40 °C to +125 °C - qualified for industrial and extended-temperature embedded systems, including motor control and power management |
Pinout & Package
TSSOP24 package (SOT355-1): plastic thin shrink small outline, 24 leads, 4.4 mm body width, 0.65 mm pitch, exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC(A) | 5 V bus supply rail - must be ≥ VCC(B); powers A-side drivers and internal logic |
| 2 | DIR | Direction control input - HIGH enables B→A data flow; LOW enables A→B; Schmitt-triggered |
| 3–10 | A0–A7 | A-side bidirectional data terminals - connect to 5 V bus; driven by VCC(A) and referenced to GND |
| 11–13 | GND | Common ground reference - three dedicated pins minimize ground bounce in high-speed switching |
| 14–21 | B7–B0 | B-side bidirectional data terminals - connect to 3 V bus; driven by VCC(B) and referenced to GND |
| 22 | OE | Active-low output enable - LOW enables transceiver; HIGH forces all A/B pins into high-Z; 5 V tolerant |
| 23–24 | VCC(B) | 3 V bus supply rail - powers B-side I/O; decoupling required near pins 23/24 for noise suppression |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply translation | Independent VCC(A) and VCC(B) rails allow simultaneous 5 V ↔ 3 V bidirectional data transfer without external level shifters |
| 5 V-tolerant control inputs | DIR and OE accept 0–5.5 V logic regardless of VCC(B) voltage - eliminates need for pull-up resistors or voltage clamping |
| Schmitt-trigger inputs | Hysteresis ≥0.3 V on all inputs rejects noise on slow-rising control or data lines in electrically noisy industrial environments |
| Suspend-mode isolation | Zero current path between VCC(A) and VCC(B) when either supply is 0 V - prevents back-powering and system-level fault propagation |
| JEDEC-compliant packaging | TSSOP24 (SOT355-1) meets MO-153 mechanical standards and supports automated optical inspection and reflow profiling |
Applications
| Industrial PLC Backplane Interface | Automotive Body Control Module (Non-Automotive Qualified) |
|---|---|
|
Use Scenario: Interfacing a 3.3 V ARM Cortex-M7 MCU with legacy 5 V sensor bus and discrete I/O cards in a programmable logic controller. IC Role / Device Role / Timing Role: Bidirectional level translator managing address/data strobes and control signals between voltage domains; DIR toggled per transaction phase. Use Value: Eliminates need for eight discrete MOSFET translators, reducing BOM count by 7× and PCB area by >40% versus discrete solutions. |
Use Scenario: Connecting a 3.3 V automotive infotainment SoC to 5 V CAN transceiver power domain and display backlight drivers in non-safety-critical subsystems. IC Role / Device Role / Timing Role: Voltage-domain bridge for GPIO expansion and status reporting; OE used for hot-plug isolation during firmware updates. Use Value: Enables single-chip translation of 8-bit parallel status flags with <8.5 ns latency, meeting real-time diagnostic response requirements. |
| Server Baseboard Management Controller (BMC) | Test Equipment Digital I/O Subsystem |
|
Use Scenario: BMC microcontroller (1.8 V core, 3.3 V I/O) communicating with 5 V legacy IPMI peripherals and fan controllers via shared SMBus and GPIO headers. IC Role / Device Role / Timing Role: Level-shifting transceiver for bidirectional SMBus clock/data and dedicated GPIO lines; DIR set statically for each bus segment. Use Value: Provides rail-to-rail signal integrity with ±5 μA OFF-state leakage, ensuring SMBus pull-up networks remain stable during BMC sleep states. |
Use Scenario: Automated test equipment (ATE) fixture using a 3.3 V FPGA to drive and monitor 5 V DUT signals across 8-channel parallel digital stimulus/response paths. IC Role / Device Role / Timing Role: Synchronized bidirectional translator with OE controlled by FPGA to gate test vectors and capture responses without bus contention. Use Value: Delivers matched 1.0–8.0 ns propagation delays across all 8 channels, enabling deterministic timing margins for 100 MHz+ pattern rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply translating transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC4245APWR (TI) | Identical pinout and electrical specs; lower ICC typical (0.1 μA vs 5 μA at 125 °C) but same max ratings; JEDEC JESD8B compliance only (no JESD36) | Same industrial temperature range (-40 °C to +125 °C); slightly tighter VOL spec at 3.3 V (0.55 V vs 0.60 V max) | Select for TI-design ecosystems or where JESD36 compliance is non-mandatory; verify layout compatibility with TI's thermal pad recommendations. |
| 74AVC4245PW,118 (Nexperia) | Higher speed (tPLH/tPHL ≤4.2 ns at 3.3 V), lower VCC(B) min (1.2 V), but reduced ESD (HBM 1500 V) and no suspend-mode isolation | Supports 1.2 V–3.6 V/1.2 V–3.6 V translation only - unsuitable for true 5 V bus interfaces requiring 5 V tolerance | Choose only for next-gen low-voltage systems (e.g., 1.8 V ↔ 3.3 V); avoid where 5 V peripheral compatibility or zero-VCC isolation is required. |
Compared with SN74LVC4245APWR, the 74LVC4245APW,118 offers stronger JESD36 compliance and superior suspend-mode behavior; versus 74AVC4245PW,118, it trades speed for 5 V tolerance and rail-isolation - making it the sole choice for mixed 3 V/5 V industrial backplanes.
Availability
74LVC4245APW,118 is available at Aetrix Electronics and suitable for industrial PLC backplane interfaces, server BMC subsystems, ATE digital I/O modules, and embedded microcontroller expansion requiring stable component supply across extended temperature ranges.
Supply support for 74LVC4245APW,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 delivering high-performance, reliable logic, analog, and MOSFET solutions with focus on efficiency, miniaturization, and robustness for industrial and consumer applications.
The 74LVC4245A belongs to Nexperia's LVC logic family, engineered specifically for low-voltage mixed-supply system interfacing - emphasizing rail-to-rail translation accuracy, ESD resilience, and thermal reliability in space-constrained TSSOP packages.
FAQ
Can 74LVC4245APW,118 operate with VCC(A) = 3.3 V and VCC(B) = 1.8 V?
Yes - the device supports VCC(A) ≥ VCC(B) across its full specified ranges: VCC(A) = 1.5–5.5 V and VCC(B) = 1.5–3.6 V. At VCC(A) = 3.3 V and VCC(B) = 1.8 V, it functions as a 3.3 V ↔ 1.8 V translator with guaranteed VIH/VIL thresholds and output drive strength per Table 6. Propagation delay increases slightly versus 3.3 V/3.3 V operation but remains within datasheet limits.
What happens if VCC(A) is powered but VCC(B) is 0 V?
In this condition, the device enters suspend mode: all B-side I/Os (B0–B7) and internal circuitry connected to VCC(B) are isolated. No current flows from VCC(A) to GND through the B-side, preventing back-powering of unpowered subsystems. A-side outputs remain functional if OE and DIR are asserted, but B-side signals are high-impedance and undefined.
Is the TSSOP24 package (SOT355-1) lead-free and RoHS compliant?
Yes - the 74LVC4245APW,118 is manufactured in a lead-free, halogen-free, and RoHS-compliant process. The SOT355-1 package uses matte tin (Sn) termination with NiPdAu underplate, qualified to JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) and compatible with standard Pb-free reflow profiles (peak 260 °C).
How does Schmitt-trigger action improve noise immunity on DIR and OE inputs?
Schmitt-trigger inputs provide hysteresis (typically 0.3–0.5 V) between rising and falling thresholds, meaning a noisy signal must cross two distinct voltage levels to toggle state. This prevents multiple transitions during slow or noisy edges - critical for DIR/OE control lines that may traverse long PCB traces near switching regulators or motor drivers.
74LVC4245APW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVC
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 8
- Voltage - VCCA:
- 1.5 V ~ 5.5 V
- Voltage - VCCB:
- 1.5 V ~ 3.6 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Tri-State
- Data Rate:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TSSOP (0.173", 4.40mm Width)
74LVC4245APW,118 FAQ
1.How can I place an order for 74LVC4245APW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC4245APW,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 74LVC4245APW,118 reliable?
The price and inventory of 74LVC4245APW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC4245APW,118 is usually 5 days.
3.What payment methods are accepted for 74LVC4245APW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC4245APW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC4245APW,118?
74LVC4245APW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC4245APW,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 74LVC4245APW,118?
For technical support, including 74LVC4245APW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC4245APW,118 requirements.
6.How does Aetrix verify that 74LVC4245APW,118 is sourced from the original manufacturer or authorized distributors?
All 74LVC4245APW,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 74LVC4245APW,118 meets industry standards.
7.What is the process for return or replacement of 74LVC4245APW,118?
All 74LVC4245APW,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC4245APW,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 74LVC4245APW,118 part is unused and in its original packaging.
Return procedure for 74LVC4245APW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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