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Texas Instruments SN74LV540ANSRE4
- Part No.:
- SN74LV540ANSRE4
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
SN74LV540ANSRE4.pdf
- Description:
- IC BUFFER INVERT 5.5V 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,420
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Product details
Overview
SN74LV540ANSRE4 from Texas Instruments is an octal inverting buffer/driver with 3-state outputs, designed for 2 V to 5.5 V VCC operation. It provides inverted logic-level buffering for bus driving and memory address register applications, features dual active-low output enables (OE1/OE2), supports mixed-mode voltage translation, and delivers 8.5 ns max propagation delay at 5 V.
For engineers reviewing the SN74LV540ANSRE4 datasheet, SN74LV540ANSRE4 pinout, SN74LV540ANSRE4 application, or SN74LV540ANSRE4 equivalent, key selection considerations include its 3-state control architecture, Ioff partial-power-down capability, ground bounce (VOLP) and undershoot (VOHV) performance at 3.3 V, and compatibility with industrial, automotive infotainment, and wireless infrastructure signal routing.
Technical Context
The SN74LV540ANSRE4 implements an octal inverting buffer function with two independent active-low 3-state enable inputs (OE1 and OE2), each controlling four outputs. Its CMOS design ensures rail-to-rail output swing, input overvoltage tolerance up to 5.5 V regardless of VCC, and Ioff protection enabling safe operation during partial power-down.
It uses a dual AND-gate 3-state control structure: either OE1 or OE2 high forces all eight outputs into high-impedance; only when both are low do outputs drive inverted input states. This architecture supports flexible bus arbitration and avoids contention in multi-driver systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2 V to 5.5 V - Enables interoperability across 2.5 V, 3.3 V, and 5 V logic domains with down-translation capability. |
| Max tpd @ 5 V | 8.5 ns - Ensures timing compliance in high-speed address/data bus applications up to ~118 MHz clock-equivalent rates. |
| Output Drive | ±16 mA @ 4.5 V - Sufficient to drive standard TTL loads and moderate-capacitance PCB traces without external buffering. |
| VOLP / VOHV | < 0.8 V / > 2.3 V @ 3.3 V - Limits ground bounce and output undershoot, reducing EMI and improving signal integrity in dense layouts. |
| Ioff Current | < 5 µA @ 0 V VCC - Prevents back-driving and leakage when powered off, critical for hot-swap and power-gated subsystems. |
| ESD Rating | ±2000 V HBM - Meets industrial-grade robustness requirements for handling and board-level reliability. |
| Operating Temp | –40°C to +125°C - Qualified for under-hood automotive, industrial control, and base station environments. |
Pinout & Package
SN74LV540ANSRE4 is packaged in a 20-pin SOP (Small Outline Package) with body size 12.6 mm × 5.3 mm, gull-wing leads, and standard JEDEC MO-153 outline. The package places all eight inputs (A1–A8) on one side and corresponding inverted outputs (Y1–Y8) on the opposite side to simplify PCB trace routing and reduce crosstalk.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OE1, OE2 | Active-low 3-state enable inputs - Either high disables all outputs; both must be low for functional output drive. |
| 2–9 | A1–A8 | Inverting buffer inputs - Logic states inverted and driven to Y1–Y8 when outputs enabled. |
| 10 | GND | Ground reference - Must be low-impedance connection; shared return for all signals and power. |
| 11–18 | Y8–Y1 | Inverted 3-state outputs - High-impedance when OE1 or OE2 high; otherwise drive complement of A1–A8. |
| 20 | VCC | Power supply - Bypass with 0.1 µF ceramic capacitor placed adjacent to pin to suppress switching noise. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode voltage operation | Inputs tolerate up to 5.5 V independent of VCC - Enables interfacing between 5 V legacy peripherals and 3.3 V or 2.5 V controllers without level shifters. |
| Ioff partial-power-down support | Sub-5 µA leakage when VCC = 0 V - Allows safe insertion/removal in live backplanes and prevents current backflow in unpowered sections. |
| Low ground bounce (VOLP) | < 0.8 V @ 3.3 V - Reduces simultaneous switching noise, easing EMC compliance in high-density digital systems. |
| Slow edge rate control | 20 ns/V min input transition rate - Intentionally limits slew rate to minimize overshoot/undershoot on transmission lines and stubs. |
| Latch-up immunity | > 250 mA per JESD17 - Guarantees robustness against transient-induced latch-up in noisy industrial environments. |
Applications
| Industrial Bus Interface | Automotive Infotainment Backplane |
|---|---|
Use Scenario: Isolating and driving CAN/LIN controller address/data buses in programmable logic controllers and sensor hubs. IC Role / Device Role / Timing Role: Inverting 3-state buffer providing direction-controlled data path isolation and voltage translation between MCU and peripheral ICs. Use Value: Eliminates need for discrete level shifters while maintaining timing margins via 8.5 ns max tpd and controlled edge rates. | Use Scenario: Routing audio processor memory addresses and display interface control signals in head unit mainboards. IC Role / Device Role / Timing Role: Octal address register buffer with dual OE control enabling selective memory bank activation and power sequencing. Use Value: Ioff protection prevents backfeed during ignition-cycle power ramping; –40°C to +125°C rating ensures cold-cranking and under-dash thermal resilience. |
| Wireless Infrastructure Baseband | Patient Monitoring Signal Conditioning |
Use Scenario: Driving FPGA configuration bus lines and ADC/DAC control interfaces in 4G/5G small cell radios. IC Role / Device Role / Timing Role: Low-noise bus driver minimizing VOLP-induced jitter on clock distribution paths and data capture timing. Use Value: Sub-0.8 V ground bounce at 3.3 V reduces timing uncertainty in high-resolution sampling systems. | Use Scenario: Buffering ECG/SpO₂ sensor multiplexer control lines and analog front-end calibration registers in portable medical devices. IC Role / Device Role / Timing Role: Safe 3-state isolator enabling dynamic reconfiguration of sensor channels without disrupting analog signal paths. Use Value: Dual OE inputs allow synchronized channel enable/disable; ±2000 V HBM withstands clinical ESD events during handling and operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal inverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC541APWR | Non-inverting output logic; identical VCC range, speed, and Ioff spec; TSSOP-20 package. | Requires logic inversion upstream/downstream if system expects inverted outputs like SN74LV540ANSRE4. | Select when non-inverting behavior aligns with bus protocol or simplifies upstream logic design. |
| 74LVX540M | Same inverting function and pinout; operates 2.7 V–3.6 V only; lower max speed (10.5 ns @ 3.3 V); SOIC-20 package. | Not suitable for 2 V or 5 V systems; limited temperature range (–40°C to +85°C). | Choose only for cost-sensitive 3.3 V-only designs where extended temp and wider VCC are unnecessary. |
Compared with SN74LV540ANSRE4, SN74LVC541APWR offers functional equivalence except for output polarity, requiring minimal logic adjustment, while 74LVX540M trades voltage flexibility and temperature range for legacy compatibility in narrow-supply applications.
Availability
SN74LV540ANSRE4 is available at Aetrix Electronics and suitable for industrial bus interface, automotive infotainment backplane, and wireless infrastructure baseband applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for SN74LV540ANSRE4 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
Texas Instruments is a global semiconductor leader delivering analog and embedded processing solutions for industrial, automotive, and communications markets.
The SN74LV540ANSRE4 belongs to TI's LV logic family, engineered for low-voltage operation with robust noise immunity and mixed-signal interoperability in space-constrained, thermally demanding applications.
FAQ
What is the logic function of the SN74LV540ANSRE4?
The SN74LV540ANSRE4 is an octal inverting buffer with 3-state outputs. Each input (A1–A8) drives a corresponding inverted output (Y1–Y8) when both output enables (OE1 and OE2) are low. When either OE1 or OE2 is high, all outputs enter high-impedance state. This function is confirmed in the device functional table and schematic in the official TI datasheet SCLS409J.
Does the SN74LV540ANSRE4 support voltage translation between different logic families?
Yes, the SN74LV540ANSRE4 supports mixed-mode voltage operation: inputs tolerate up to 5.5 V regardless of VCC setting (2 V–5.5 V), enabling reliable interfacing between 5 V TTL, 3.3 V LVTTL, and 2.5 V systems without external level shifters. This capability is explicitly documented in the Features and Recommended Operating Conditions sections of the SN74LV540ANSRE4 datasheet.
What is the maximum operating temperature for the SN74LV540ANSRE4?
The SN74LV540ANSRE4 is rated for operation from –40°C to +125°C ambient temperature, as specified in the Recommended Operating Conditions table (Section 6.3) of the TI datasheet SCLS409J. This full industrial/automotive temperature range is supported across all active package variants including the NS (SOP-20) package used in SN74LV540ANSRE4.
How does the Ioff feature benefit system design with the SN74LV540ANSRE4?
The Ioff feature of the SN74LV540ANSRE4 limits input/output leakage to less than 5 µA when VCC = 0 V, preventing current backflow and signal corruption during partial power-down or hot-swap events. This allows safe integration into modular systems where subsystems power up/down independently - a requirement verified in TI's characterization testing per JESD78.
Is the SN74LV540ANSRE4 pin-compatible with other members of the LV540A family?
Yes, the SN74LV540ANSRE4 shares identical pinout and functionality with all other SN74LV540A variants (e.g., SN74LV540ADBR, SN74LV540ADGVR), differing only in package type (SOP-20 vs SSOP-20 vs TVSOP-20). Pin functions - including dual OE inputs, A1–A8 inputs, Y1–Y8 outputs, GND, and VCC - are fully consistent across the family, as confirmed in Table 5-1 (Pin Functions) of the SN74LV540ANSRE4 datasheet.
SN74LV540ANSRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LV
- Package/Case:
- 20-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Logic Type:
- Buffer, 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-SO
SN74LV540ANSRE4 FAQ
1.How can I place an order for SN74LV540ANSRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LV540ANSRE4 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 SN74LV540ANSRE4 reliable?
The price and inventory of SN74LV540ANSRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LV540ANSRE4 is usually 5 days.
3.What payment methods are accepted for SN74LV540ANSRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LV540ANSRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LV540ANSRE4?
SN74LV540ANSRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LV540ANSRE4 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 SN74LV540ANSRE4?
For technical support, including SN74LV540ANSRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LV540ANSRE4 requirements.
6.How does Aetrix verify that SN74LV540ANSRE4 is sourced from the original manufacturer or authorized distributors?
All SN74LV540ANSRE4 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 SN74LV540ANSRE4 meets industry standards.
7.What is the process for return or replacement of SN74LV540ANSRE4?
All SN74LV540ANSRE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LV540ANSRE4, 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 SN74LV540ANSRE4 part is unused and in its original packaging.
Return procedure for SN74LV540ANSRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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