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Texas Instruments SN74LVCH16240ADL
- Part No.:
- SN74LVCH16240ADL
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVCH16240ADL.pdf
- Description:
- IC BUFFER INVERT 3.6V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:362
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Product details
Overview
SN74LVCH16240ADL from Texas Instruments is a 16-bit inverting buffer/driver with 3-state outputs, designed for 1.65 V to 3.6 V operation, supporting mixed-mode 5-V input/3.3-V VCC interfacing, with 4.2 ns max propagation delay at 3.3 V and bus-hold on all data inputs - used in memory address buffering, clock distribution, and bus-transceiver applications.
For engineers reviewing the SN74LVCH16240ADL datasheet, SN74LVCH16240ADL pinout, SN74LVCH16240ADL application, or SN74LVCH16240ADL equivalent, key selection considerations include 3-state output control timing (ten = 4.7 ns, tdis = 5.9 ns), Ioff partial-power-down support, 5.5-V tolerant inputs, and SSOP-48 package compatibility with high-density PCB layouts.
Technical Context
This device implements four independent 4-bit inverting buffers, each with symmetrical active-low output-enable (OE) inputs and bus-hold circuitry eliminating external pull resistors. It supports partial-power-down via Ioff, which disables outputs and prevents backflow current when VCC = 0 V.
Input voltage tolerance extends to 5.5 V regardless of VCC (1.65–3.6 V), enabling direct interface between 5-V legacy logic and 3.3-V systems. Output drive strength is ±24 mA at 3 V, with VOL ≤ 0.55 V and VOH ≥ 2.2 V under full load, ensuring robust noise margins in noisy industrial buses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - enables interoperability across low-voltage logic families without level shifters |
| Max Propagation Delay | 4.2 ns at 3.3 V - supports high-speed address/data bus operation up to ~200 MHz system timing |
| Input Voltage Tolerance | Up to 5.5 V - allows direct connection to 5-V TTL/CMOS outputs without external clamping |
| Ioff Current | ±10 µA at VCC = 0 V - ensures safe hot-insertion and power sequencing in modular backplane systems |
| Bus-Hold Current | ±45 µA at 2.3 V - maintains valid logic states on floating inputs, removing need for 10-kΩ pull resistors |
| Output Drive | ±24 mA at VCC = 3 V - drives 50-Ω transmission lines or multiple CMOS loads without signal degradation |
| ESD Rating | 2000-V HBM - meets industrial IEC 61000-4-2 system-level ESD immunity requirements |
Pinout & Package
SN74LVCH16240ADL uses a 48-pin SSOP (DL) package, 12.4 mm × 6.0 mm × 1.95 mm body size, with 0.5-mm lead pitch and gull-wing leads. Pin 1 is marked by a beveled corner and located in quadrant Q1 per JEDEC MO-153.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE | Active-low output enable | Controls 4-bit group (Y1–Y4) into high-impedance state; tie to VCC via pullup for power-up safety |
| 1A1–1A4, 2A1–2A4, etc. | Data inputs (inverting) | 16 total inputs; each inverted and routed to corresponding Y output; bus-hold enabled by default |
| 1Y1–1Y4, 2Y1–2Y4, etc. | Inverting 3-state outputs | 16 buffered, inverted outputs; high-Z when OE = high; capable of driving 50-Ω loads |
| VCC (Pins 7, 20, 33, 46) | Power supply | Four dedicated VCC pins reduce IR drop and improve noise immunity across wide bus |
| GND (Pins 4, 11, 24, 37) | Ground reference | Four GND pins provide low-inductance return paths for switching currents and minimize ground bounce |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode voltage translation | 5-V-tolerant inputs with 3.3-V VCC allow seamless integration into hybrid 3.3/5-V backplanes without discrete level shifters |
| Integrated bus-hold | Eliminates external pullup/pulldown resistors on all 16 data inputs, reducing BOM count and board area by ≥16 passives |
| Ioff partial-power-down | Prevents damaging current flow during hot-swap or staggered power sequencing, critical for modular server and telecom line cards |
| Low ground bounce (VOLP < 0.8 V) | Minimizes simultaneous switching noise in dense memory subsystems, improving signal integrity on shared VCC/GND planes |
| High ESD robustness | 2000-V HBM rating exceeds AEC-Q100 stress levels, supporting deployment in factory automation and industrial HMI interfaces |
Applications
| Memory Address Buffering | Clock Distribution Network |
|---|---|
Use Scenario: Driving 16-bit address lines from a microcontroller to multiple SRAM or Flash devices on a shared bus. IC Role / Device Role / Timing Role: Inverting 3-state buffer isolating MCU address outputs from capacitive bus loading while enabling chip-select arbitration. Use Value: Enables clean address transitions with 4.2 ns tpd and eliminates floating-input risk via bus-hold, reducing address decode errors in multi-chip memory systems. | Use Scenario: Distributing a single system clock to multiple synchronous peripherals (ADCs, DACs, FPGAs) with matched skew. IC Role / Device Role / Timing Role: Low-skew, inverting clock driver providing fanout and isolation between clock source and downstream loads. Use Value: Delivers sub-5 ns propagation delay and <0.8 V ground bounce, preserving clock edge integrity across 16 parallel loads in precision timing systems. |
| Industrial Bus Transceiver | Mixed-Voltage Interface Bridge |
Use Scenario: Bidirectional data routing between a 3.3-V FPGA and legacy 5-V PLC I/O modules over a parallel control bus. IC Role / Device Role / Timing Role: Direction-controlled 3-state buffer translating logic levels and isolating voltage domains on shared data lines. Use Value: Supports 5-V input tolerance and 3.3-V output swing simultaneously, enabling direct interconnection without external voltage translators or level-shifting ICs. | Use Scenario: Interfacing a 5-V sensor front-end ASIC to a 3.3-V ARM-based host processor in an embedded measurement system. IC Role / Device Role / Timing Role: Input-tolerant inverting buffer conditioning analog-to-digital control signals before entering low-voltage logic domain. Use Value: Eliminates need for discrete resistor dividers or dedicated level shifters, simplifying layout and improving long-term reliability in harsh environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit inverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16240ADL | No bus-hold; requires external pull resistors; identical pinout and VCC range | Lacks automatic input state retention - unsuitable where floating inputs may occur during reset or power ramp | Select only if board already includes pull resistors and cost reduction outweighs design simplicity |
| 74ALVC16240DL | Faster tpd (3.2 ns at 3.3 V); higher ICC; no Ioff support | Not suitable for partial-power-down systems; higher static current increases thermal load in always-on modules | Choose only for speed-critical applications where power sequencing is fully controlled and thermal budget permits |
Compared with SN74LVCH16240ADL, SN74LVC16240ADL reduces component count only if pull resistors are already present, while 74ALVC16240DL trades power efficiency and hot-swap safety for marginal speed gain - making SN74LVCH16240ADL optimal for industrial bus isolation requiring robustness, mixed-voltage support, and zero-external-component operation.
Availability
SN74LVCH16240ADL is available at Aetrix Electronics and suitable for memory subsystems, clock distribution networks, industrial bus interfaces, and mixed-voltage bridging applications requiring stable component supply, long-lifecycle availability, and traceable sourcing.
Supply support for SN74LVCH16240ADL 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, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.
The SN74LVCH16240ADL belongs to TI's Widebus™ family, engineered specifically to increase density and performance of 3-state memory address drivers, clock drivers, and bus-oriented transceivers in space-constrained, mixed-voltage systems.
FAQ
What is the maximum operating temperature range for SN74LVCH16240ADL?
The SN74LVCH16240ADL is rated for operation from –40°C to +85°C ambient temperature, matching industrial-grade requirements. This range is validated across all electrical parameters including propagation delay, output drive, and bus-hold functionality - ensuring reliable performance in factory automation controllers, motor drives, and outdoor communication equipment where thermal cycling occurs.
Does SN74LVCH16240ADL support hot-swap or partial-power-down operation?
Yes, SN74LVCH16240ADL supports partial-power-down via its Ioff feature, which disables outputs and limits leakage to ±10 µA when VCC = 0 V. This prevents backflow current during hot-insertion into live backplanes - a key requirement for modular telecom line cards and server mezzanine boards where SN74LVCH16240ADL serves as a bus isolation buffer.
Can SN74LVCH16240ADL be used as a non-inverting buffer?
No, SN74LVCH16240ADL provides only inverting outputs per its logic diagram and function table. Each A input drives a complementary Y output (e.g., A1 → Y1 = NOT A1). To achieve non-inverting behavior, two cascaded SN74LVCH16240ADL sections would be required - but this adds propagation delay and board area. For true non-inverting 16-bit buffering, consider SN74LVCH16244ADL instead.
What is the recommended pullup resistor value for OE pins on SN74LVCH16240ADL?
Texas Instruments recommends tying OE pins to VCC through a pullup resistor whose minimum value is determined by the driver's current-sinking capability. For SN74LVCH16240ADL, a 10-kΩ resistor is typical - sufficient to ensure OE remains high during power-up while limiting current to <50 µA. This guarantees outputs stay in high-impedance state until firmware asserts OE low, preventing bus contention.
Is SN74LVCH16240ADL RoHS compliant and lead-free?
Yes, SN74LVCH16240ADL is RoHS compliant and features NiPdAu (NIPDAU) lead finish, meeting EU Directive 2011/65/EU and TI's green packaging standards. Its SSOP-DL package carries MSL Level-1 rating (unlimited floor life at ≤30°C/60% RH), and reflow peak temperature is qualified to 260°C - verified per JEDEC J-STD-020 for lead-free assembly processes.
SN74LVCH16240ADL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVCH
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- Buffer, Inverting
- Number of Elements:
- 4
- Number of Bits per Element:
- 4
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-SSOP
SN74LVCH16240ADL FAQ
1.How can I place an order for SN74LVCH16240ADL through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVCH16240ADL 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 SN74LVCH16240ADL reliable?
The price and inventory of SN74LVCH16240ADL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVCH16240ADL is usually 5 days.
3.What payment methods are accepted for SN74LVCH16240ADL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVCH16240ADL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVCH16240ADL?
SN74LVCH16240ADL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVCH16240ADL 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 SN74LVCH16240ADL?
For technical support, including SN74LVCH16240ADL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVCH16240ADL requirements.
6.How does Aetrix verify that SN74LVCH16240ADL is sourced from the original manufacturer or authorized distributors?
All SN74LVCH16240ADL 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 SN74LVCH16240ADL meets industry standards.
7.What is the process for return or replacement of SN74LVCH16240ADL?
All SN74LVCH16240ADL units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVCH16240ADL, 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 SN74LVCH16240ADL part is unused and in its original packaging.
Return procedure for SN74LVCH16240ADL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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