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NXP Semiconductors 74LVC544APW,118
- Part No.:
- 74LVC544APW,118
- Manufacturer:
- NXP Semiconductors
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74LVC544APW,118.pdf
- Description:
- IC TXRX INVERT 3.6V 24TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,636
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Product details
Overview
74LVC544APW,118 from NXP Semiconductors is an octal registered inverting transceiver with dual-directional 3-state D-type latches, operating from 1.2 V to 3.6 V supply, supporting 5 V-tolerant I/O, and specified for −40 °C to +125 °C ambient range. It enables bidirectional data buffering with independent latch and output enable controls for A↔B paths, used in bus interface isolation and level-shifting between mixed-voltage subsystems.
For engineers reviewing the 74LVC544APW,118 datasheet, 74LVC544APW,118 pinout, 74LVC544APW,118 application, or 74LVC544APW,118 equivalent, this page delivers verified electrical specs, TSSOP24 package details, functional timing parameters, real-world use cases in industrial control backplanes and FPGA I/O expansion, and two validated alternative parts with documented differences.
Technical Context
The 74LVC544APW,118 implements two independent 8-bit register banks - one for A-to-B flow (controlled by LEAB/OEAB/EAB) and one for B-to-A flow (controlled by LEBA/OEBA/EBA) - each providing transparent, latched, and high-impedance states. Its inverting logic path ensures signal polarity inversion across both directions while maintaining strict setup/hold timing for latch capture.
It supports partial power-down operation (inputs/outputs go high-impedance when VCC = 0 V), complies with JEDEC standards JESD8-7A, JESD8-5A, and JESD8-C/JESD36 across voltage ranges, and meets HBM ESD >2000 V per JESD22-A114F - making it suitable for hot-swap-capable digital interconnects requiring robust noise immunity and voltage translation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.2 V to 3.6 V - enables direct interfacing with 1.2 V, 1.8 V, 2.5 V, and 3.3 V logic domains without external level shifters. |
| I/O Voltage Tolerance | 5 V tolerant - allows safe connection to legacy 5 V buses while powered from lower-voltage rails. |
| Propagation Delay | 3.3 ns typical (VCC = 3.3 V) - supports high-speed data transfer up to ~150 MHz in transparent mode. |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood automotive modules, industrial PLCs, and telecom base station interfaces. |
| Output Drive Strength | ±24 mA at 3.0 V - sufficient to drive 50 Ω transmission lines or multiple CMOS inputs without external buffers. |
| Power Dissipation Capacitance | 15.1 pF (VCC = 3.0–3.6 V) - enables accurate dynamic power estimation using PD = CPD × VCC² × fi × N. |
| Input Leakage Current | ±5 µA max (VCC = 3.6 V, VI = 5.5 V or GND) - ensures low standby current in battery-backed systems. |
Pinout & Package
TSSOP24 package: plastic thin shrink small outline, 24 leads, body width 4.4 mm (SOT355-1), lead pitch 0.65 mm, exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (LEBA) | B-to-A latch enable input | Active LOW; enables transparent pass-through of B-side data into B→A latches on rising edge. |
| 2 (OEBA) | B-to-A output enable input | Active LOW; activates 3-state B→A output drivers when asserted with EBA. |
| 3–10 (A0–A7) | A-side bidirectional I/O | Data ports for A bus; direction determined by EAB/EBA and OEAB/OEBA states. |
| 11 (EAB) | A-to-B enable input | Active LOW; enables A→B data path only when asserted alongside OEAB. |
| 12 (GND) | Ground reference | Primary 0 V return for all internal logic and I/O circuitry. |
| 13 (OEAB) | A-to-B output enable input | Active LOW; enables 3-state A→B output drivers when asserted with EAB. |
| 14 (LEAB) | A-to-B latch enable input | Active LOW; captures A-side data into A→B latches on rising edge. |
| 15–22 (B7–B0) | B-side bidirectional I/O | Data ports for B bus; inverted relative to A-side outputs in latched mode. |
| 23 (EBA) | B-to-A enable input | Active LOW; enables B→A data path only when asserted alongside OEBA. |
| 24 (VCC) | Positive supply rail | Core logic and I/O supply; must be decoupled locally with 100 nF ceramic capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent register banks | Enables simultaneous A→B and B→A data capture without contention, critical for full-duplex bus arbitration. |
| 5 V tolerant I/O with 1.2 V–3.6 V core | Eliminates need for external level translators when interfacing 3.3 V FPGAs to 5 V legacy peripherals. |
| Separate latch and output enables per direction | Allows precise timing control: latch capture can occur while outputs remain disabled, preventing bus glitches. |
| High-impedance on VCC = 0 V | Supports true power-gating scenarios where downstream logic remains active during upstream power-down. |
| JEDEC-compliant voltage ranges | Guarantees interoperability across 1.65–1.95 V, 2.3–2.7 V, and 2.7–3.6 V logic families per industry standard. |
Applications
| Industrial Backplane Interface | FPGA I/O Expansion |
|---|---|
Use Scenario: Isolating and buffering address/data lines between a microcontroller host and modular I/O cards in a DIN-rail PLC chassis. IC Role / Device Role / Timing Role: Bidirectional registered transceiver managing synchronous read/write cycles with latch-controlled data staging to prevent metastability across clock domains. Use Value: Enables deterministic 8-bit parallel transfers at up to 100 MHz with guaranteed setup/hold margins, reducing FPGA logic resource usage for bus synchronization. |
Use Scenario: Extending the number of available general-purpose I/O pins on a Xilinx Artix-7 FPGA to drive external ADCs, DACs, and GPIO peripherals. IC Role / Device Role / Timing Role: Level-translating and registering signals between the FPGA's 3.3 V bank and mixed-voltage peripherals (e.g., 2.5 V ADC, 5 V display controller). Use Value: Provides 5 V tolerance and sub-4 ns propagation delay, eliminating external voltage translators and preserving timing closure in high-speed I/O designs. |
| Automotive Body Control Module | Test Equipment Digital I/O Subsystem |
Use Scenario: Interfacing a 3.3 V CAN controller MCU with legacy 5 V sensor clusters and actuator drivers in a vehicle body control unit. IC Role / Device Role / Timing Role: Inverting registered transceiver handling bidirectional diagnostic command/response traffic over shared harness wiring. Use Value: −40 °C to +125 °C rating and >2000 V HBM ESD withstand ensure reliable operation in under-hood environments without derating. |
Use Scenario: Implementing programmable digital stimulus and response capture in automated test equipment for IC validation. IC Role / Device Role / Timing Role: Synchronized data capture and pattern generation engine, leveraging separate LE/OE controls for precise waveform edge alignment. Use Value: Independent latch enable timing (tW ≥ 2.0 ns @ 3.3 V) supports sub-5 ns pulse-width generation and sampling windows for high-speed digital testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal registered transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC544APWR | Same logic function and pinout; TI version uses different process node resulting in slightly higher ICC (max 40 µA vs NXP's 10 µA at VCC = 3.6 V). | Valid for industrial temperature range only (−40 °C to +85 °C), not extended +125 °C grade. | Select SN74LVC544APWR only if cost sensitivity outweighs extended temperature requirement and higher static current is acceptable. |
| 74ALVC544PW,118 | Higher speed (tpd = 2.7 ns typ @ 3.3 V), but narrower supply range (2.3 V–3.6 V only) and no 1.2 V–1.95 V support. | Lacks 5 V tolerance and JEDEC JESD8-7A compliance - unsuitable for mixed-voltage systems with 1.8 V logic and 5 V peripherals. | Choose 74ALVC544PW,118 only when maximum speed is critical and system operates strictly within 2.3–3.6 V with no 5 V interface needs. |
Compared with SN74LVC544APWR and 74ALVC544PW,118, the 74LVC544APW,118 uniquely balances wide voltage operation (1.2–3.6 V), 5 V tolerance, extended temperature support, and ultra-low ICC - making it optimal for mixed-voltage embedded systems requiring long-term reliability and design flexibility.
Availability
74LVC544APW,118 is available at Aetrix Electronics and suitable for industrial automation backplanes, FPGA-based instrumentation, and automotive body electronics requiring stable component supply across extended temperature and mixed-voltage conditions.
Supply support for 74LVC544APW,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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The 74LVC544APW,118 belongs to NXP's LVC (Low-Voltage CMOS) logic family, designed specifically for low-power, mixed-voltage digital interfacing in space-constrained and thermally demanding embedded systems.
FAQ
What is the maximum operating frequency supported by the 74LVC544APW,118 in transparent mode?
The 74LVC544APW,118 achieves a typical propagation delay of 3.3 ns at VCC = 3.3 V, enabling reliable operation up to approximately 150 MHz in transparent mode. This assumes clean signal edges, proper termination, and load capacitance ≤30 pF. For latched operation, maximum frequency depends on setup/hold timing margins and clock jitter, typically limited to ≤100 MHz in synchronous bus applications.
Does the 74LVC544APW,118 support hot insertion when VCC = 0 V?
Yes - the 74LVC544APW,118 features true power-off protection: when VCC = 0 V, all inputs and outputs enter a high-impedance state with IOFF ≤ ±20 µA (per JESD22-A101E), preventing back-driving or leakage current into unpowered circuitry. This behavior is explicitly guaranteed in the datasheet and makes the 74LVC544APW,118 suitable for hot-swap backplane applications.
Can the 74LVC544APW,118 be used to replace a 74LVC245 in a design?
No - the 74LVC544APW,118 is not a drop-in replacement for the 74LVC245. While both are octal transceivers, the 74LVC544APW,118 includes D-type latches and separate latch enable (LE) inputs, whereas the 74LVC245 is a non-latching bus transceiver with single-directional control. Pin functions differ significantly (e.g., LEAB/LEBA vs DIR), and logic behavior is incompatible without redesigning control sequencing.
What is the minimum supply voltage required for guaranteed functionality of the 74LVC544APW,118?
The 74LVC544APW,118 is fully specified down to 1.2 V supply voltage, with functional operation confirmed across the entire −40 °C to +125 °C range at this level. Static characteristics (VIH/VIL) and dynamic timing (tpd, tsu, th) are characterized at 1.2 V, and JEDEC JESD8-7A compliance applies to the 1.65–1.95 V range - confirming robust low-voltage operation essential for battery-powered and energy-efficient systems.
How does the inverting function of the 74LVC544APW,118 affect system-level signal integrity?
The 74LVC544APW,118 inverts data on both A→B and B→A paths, meaning An drives inverted Bn and Bn drives inverted An. This requires complementary logic handling in firmware or upstream logic - e.g., double inversion cancels out in full-duplex loops, but single-pass paths require software compensation. The inversion is inherent to the device architecture and cannot be disabled; it does not degrade signal integrity, as VOL/VOH specs and edge rates remain identical to non-inverting equivalents.
74LVC544APW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LVC
- Package/Case:
- 24-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Transceiver, Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 1.2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TSSOP
74LVC544APW,118 FAQ
1.How can I place an order for 74LVC544APW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC544APW,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 74LVC544APW,118 reliable?
The price and inventory of 74LVC544APW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC544APW,118 is usually 5 days.
3.What payment methods are accepted for 74LVC544APW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC544APW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC544APW,118?
74LVC544APW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC544APW,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 74LVC544APW,118?
For technical support, including 74LVC544APW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC544APW,118 requirements.
6.How does Aetrix verify that 74LVC544APW,118 is sourced from the original manufacturer or authorized distributors?
All 74LVC544APW,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 74LVC544APW,118 meets industry standards.
7.What is the process for return or replacement of 74LVC544APW,118?
All 74LVC544APW,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC544APW,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 74LVC544APW,118 part is unused and in its original packaging.
Return procedure for 74LVC544APW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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