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onsemi NLV74HC540ADTR2G
- Part No.:
- NLV74HC540ADTR2G
- Manufacturer:
- onsemi
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
NLV74HC540ADTR2G.pdf
- Description:
- IC BUFFER INVERT 6V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
NLV74HC540ADTR2G from onsemi is an octal 3-state inverting buffer/line driver with dual active-low output enables, operating from 2.0 V to 6.0 V, delivering ±7.8 mA output drive at 6.0 V, and used in bus-oriented systems such as memory address drivers and clock distribution networks.
For engineers reviewing the NLV74HC540ADTR2G datasheet, pinout, applications, or equivalent options, key selection criteria include guaranteed 3-state leakage ≤10 µA at 125°C, propagation delay ≤25 ns at 6.0 V, and TSSOP-20 package compatibility with high-density PCB layouts.
Technical Context
The NLV74HC540ADTR2G implements eight independent CMOS inverting buffers, each with rail-to-rail input compatibility (0–VCC) and high-impedance outputs controlled by two ANDed active-low enables (OE1, OE2). Its logic function requires both enables low for inversion; either high forces all Y outputs into high-impedance state.
Designed for bus interface applications, it features inputs on one side (pins 2–9) and inverted outputs on the opposite side (pins 11–18), enabling clean signal routing. The device meets JEDEC Std. No. 7A and supports operation from −55°C to +125°C, with AEC-Q100 qualification indicated by the "−Q" suffix variant - though NLV74HC540ADTR2G itself is the standard industrial-grade version.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 6.0 V - supports mixed-voltage system interfacing (e.g., 3.3 V logic driving 5 V buses) |
| Output Drive Capability | ±7.8 mA at VCC = 6.0 V - sufficient to drive 15 LSTTL loads or terminate stubs in medium-speed parallel buses |
| Propagation Delay (A→Y) | ≤25 ns max at VCC = 6.0 V, TA ≤125°C - enables reliable operation up to ~20 MHz bus toggle rates |
| 3-State Leakage Current | ≤10.0 µA at VCC = 6.0 V, TA = 125°C - ensures minimal bus contention during high-impedance hold |
| Input Leakage Current | ±1.0 µA max at VCC = 6.0 V, TA = 125°C - prevents unintended logic transitions with high-impedance or floating traces |
| Operating Temperature | −55°C to +125°C - qualified for extended industrial and under-hood automotive auxiliary functions |
| ESD Withstand | >2000 V HBM - provides robust handling margin during SMT assembly and board handling |
Pinout & Package
TSSOP-20 package (Case 948E), 0.65 mm pitch, 6.5 mm × 4.4 mm body, 1.0 mm max height, lead-free (Pb-free) and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OE1, OE2 | Active-low output enable controls; both must be low for functional output - enables bus arbitration via dual-control gating |
| 2–9 | A1–A8 | Inverting data inputs; direct connection to upstream logic without level-shifting in 2.0–6.0 V domains |
| 11–18 | Y1–Y8 | Inverted, 3-state outputs; physically opposite inputs to simplify layer routing and reduce crosstalk |
| 10 | GND | Ground reference for all I/O and internal circuitry - requires low-inductance local decoupling |
| 20 | VCC | Positive supply rail - must be bypassed with ≥0.1 µF ceramic capacitor near pin |
Key Features
| Feature | Design Value |
|---|---|
| Octal inverting 3-state buffering | Enables bidirectional bus control using two independent enable signals - eliminates need for external OR logic |
| CMOS input compatibility | Accepts 0–VCC input voltages - interoperates directly with HC, HCT, AC, and ALVC families without level shifters |
| High noise immunity | Typical noise margin >40% of VCC - suppresses false triggering from EMI or ground bounce in noisy industrial environments |
| Low quiescent current | ICC ≤ 160 µA max at VCC = 6.0 V, TA = 125°C - minimizes standby power in always-on subsystems |
| Pb-free and RoHS compliant | Meets global environmental regulations - suitable for export to EU, China, and Korea without compliance rework |
Applications
| Memory Address Buffering | Industrial PLC Backplane Interface |
|---|---|
Use Scenario: Driving multiplexed address lines between microcontroller and SRAM/Flash in a programmable logic controller. IC Role / Device Role / Timing Role: Inverting 3-state buffer isolating CPU address bus from memory array; enables shared bus access with DMA controllers. Use Value: Guaranteed 25 ns max propagation delay ensures setup/hold timing margins at 20 MHz bus clocks; dual OE pins allow precise arbitration between CPU and peripheral initiators. | Use Scenario: Level-translating and isolating I/O expansion module data lanes in modular automation hardware. IC Role / Device Role / Timing Role: Bus driver translating 3.3 V controller outputs to 5 V backplane signaling while providing hot-swap-safe 3-state isolation. Use Value: ±7.8 mA drive at 6.0 V supports 15 LSTTL loads - sufficient for daisy-chained I/O modules; −55°C to +125°C rating covers cabinet temperature extremes. |
| Automotive Body Control Module | Test Equipment Signal Conditioning |
Use Scenario: Isolating microcontroller GPIOs from relay driver arrays and sensor multiplexers in BCM subassemblies. IC Role / Device Role / Timing Role: Inverting buffer with 3-state control managing shared diagnostic bus lines across multiple ECUs. Use Value: 10 µA max 3-state leakage at 125°C prevents false wake-up events; AEC-Q100-qualified variants (e.g., NLV74HC540ADTR2G−Q) are drop-in compatible for automotive release. | Use Scenario: Conditioning digital stimulus/response signals in automated test equipment with variable voltage rails. IC Role / Device Role / Timing Role: Reconfigurable bus driver supporting 2.0–6.0 V test head interfaces via software-controlled OE states. Use Value: Input voltage range (0–VCC) and rail-to-rail output swing eliminate need for external level translators; 120 ps typical transition time preserves signal integrity at 50 MHz edge rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal inverting 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC540PWR | Same logic function and pinout; SOIC-20 vs TSSOP-20 package; higher thermal resistance (96°C/W vs 150°C/W) | Preferred for through-hole prototyping or legacy SOIC footprints; lower power density limits high-temp continuous operation | Select when board layout uses SOIC-20 land pattern or requires higher creepage clearance |
| 74LVC541APW,118 | Noninverting octal buffer; 1.65–3.6 V only; 24 mA drive; different pinout (OE on pin 1, not dual) | Suitable for 3.3 V-only systems requiring noninverting polarity; incompatible pin mapping prevents drop-in replacement | Choose only if polarity inversion is unnecessary and supply is strictly 3.3 V - verify OE placement and drive strength match |
Compared with SN74HC540PWR and 74LVC541APW,118, the NLV74HC540ADTR2G offers optimal trade-offs for industrial bus isolation: its dual-OE architecture enables finer bus arbitration control, TSSOP-20 footprint saves PCB area, and full 2.0–6.0 V range supports mixed-voltage designs without external regulators.
Availability
NLV74HC540ADTR2G is available at Aetrix Electronics and suitable for memory address buffering, industrial PLC backplane interface, and automotive body control module designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for NLV74HC540ADTR2G 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient technologies for automotive, industrial, cloud, medical, and IoT applications.
The NLV74HC540ADTR2G belongs to the HC logic family - designed for high-noise-immunity, low-power, pin-compatible replacements of legacy TTL bus drivers in space-constrained and thermally demanding environments.
FAQ
What is the maximum operating temperature for NLV74HC540ADTR2G?
The NLV74HC540ADTR2G is rated for operation from −55°C to +125°C across all specified electrical parameters. This extended temperature range is validated per JEDEC standards and makes NLV74HC540ADTR2G suitable for under-hood automotive auxiliary circuits, industrial motor drives, and outdoor telecom infrastructure where ambient temperatures exceed standard commercial limits.
Does NLV74HC540ADTR2G support 3.3 V logic levels?
Yes, NLV74HC540ADTR2G fully supports 3.3 V operation: its recommended VCC range includes 3.3 V, input thresholds scale with VCC (VIH ≈ 0.7×VCC), and output VOH/VOL meet 3.3 V LVTTL/LVCMOS specifications. At VCC = 3.3 V, it delivers ±6.0 mA drive - sufficient for driving 10 LSTTL loads or terminating 50 Ω transmission lines.
Can NLV74HC540ADTR2G replace the obsolete 74LS540 in existing designs?
Yes, NLV74HC540ADTR2G is pinout-compatible with 74LS540 and provides identical functionality with improved performance: CMOS inputs eliminate need for pull-ups, 3.3 V–6.0 V operation replaces fixed 5 V supply dependency, and 25 ns max propagation delay at 6 V matches or exceeds LS540 speed. However, verify OE logic polarity (active-low) and ensure unused inputs are tied high/low per HC design rules.
What is the purpose of the dual output enable pins (OE1 and OE2) on NLV74HC540ADTR2G?
The dual active-low output enables (OE1 and OE2) on NLV74HC540ADTR2G require both to be low for normal inverting operation; asserting either high places all eight Y outputs in high-impedance state. This ANDed enable structure allows hierarchical bus control - for example, OE1 may be system-wide while OE2 is channel-specific - enabling flexible arbitration without external logic gates.
Is NLV74HC540ADTR2G RoHS compliant and lead-free?
Yes, NLV74HC540ADTR2G is Pb-free and RoHS compliant, as confirmed by onsemi's packaging documentation and marking code "G". It adheres to EU Directive 2011/65/EU and subsequent amendments, with no exemptions applied. The TSSOP-20 package uses matte tin lead finish and meets JEDEC J-STD-020 moisture sensitivity level 1 requirements.
NLV74HC540ADTR2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74HC
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 7.8mA, 7.8mA
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
NLV74HC540ADTR2G FAQ
1.How can I place an order for NLV74HC540ADTR2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NLV74HC540ADTR2G 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 NLV74HC540ADTR2G reliable?
The price and inventory of NLV74HC540ADTR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NLV74HC540ADTR2G is usually 5 days.
3.What payment methods are accepted for NLV74HC540ADTR2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NLV74HC540ADTR2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NLV74HC540ADTR2G?
NLV74HC540ADTR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NLV74HC540ADTR2G 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 NLV74HC540ADTR2G?
For technical support, including NLV74HC540ADTR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NLV74HC540ADTR2G requirements.
6.How does Aetrix verify that NLV74HC540ADTR2G is sourced from the original manufacturer or authorized distributors?
All NLV74HC540ADTR2G 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 NLV74HC540ADTR2G meets industry standards.
7.What is the process for return or replacement of NLV74HC540ADTR2G?
All NLV74HC540ADTR2G units undergo pre-shipment inspection (PSI). If there is an issue with NLV74HC540ADTR2G, 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 NLV74HC540ADTR2G part is unused and in its original packaging.
Return procedure for NLV74HC540ADTR2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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