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onsemi 74ALVC16240DT
- Part No.:
- 74ALVC16240DT
- Manufacturer:
- onsemi
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74ALVC16240DT.pdf
- Description:
- IC BUFFER INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:8,411
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Product details
Overview
74ALVC16240DT from onsemi is an inverting 16-bit buffer IC with 3-state outputs, designed for low-voltage operation at 1.65–3.6 V supply. It features four independent nibble controls (OE1–OE4), 3.6 V-tolerant I/O, ±24 mA output drive at 3.0 V, and propagation delays as low as 3.0 ns (VCC = 3.0–3.6 V). It is used in high-speed bus interface applications requiring level translation and bus isolation in mixed-voltage systems.
For engineers reviewing the 74ALVC16240DT datasheet, pinout, applications, or equivalent options, key selection criteria include voltage tolerance (3.6 V I/O), per-nibble 3-state control, static drive capability across 1.65–3.6 V, IOFF support for live insertion, and TSSOP-48 package compatibility with space-constrained PCB layouts.
Technical Context
The 74ALVC16240DT implements four independent 4-bit inverting buffers, each controlled by its own Output Enable (OEn) input. Each nibble operates identically but electrically isolated-enabling flexible bus segmentation without signal crosstalk between groups.
Its 3.6 V-tolerant inputs/outputs allow direct interfacing with higher-voltage logic (e.g., 5 V or 3.3 V peripherals) while powered from 1.8 V or 2.5 V rails. The IOFF specification ensures high-impedance outputs when VCC = 0 V, supporting hot-swap and live-insertion use cases in backplane and modular systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65 V to 3.6 V - supports single-rail operation across 1.8 V, 2.5 V, and 3.3 V system domains |
| Input/Output Voltage Tolerance | Up to 3.6 V - enables safe interfacing with legacy 3.3 V or 5 V logic without external level shifters |
| Max Propagation Delay | 3.0 ns @ 3.0–3.6 V - meets timing requirements for >300 MHz bus toggling in DDR and address/data multiplexing |
| Output Drive Strength | ±24 mA @ 3.0 V - drives heavy capacitive loads (e.g., long traces, multiple inputs) without signal degradation |
| IOFF Leakage | 10 µA @ VCC = 0 V - guarantees true high-impedance state during power-down, preventing backfeeding |
| Quiescent Supply Current | 40 µA - minimizes standby power in battery-backed or always-on subsystems |
| ESD Rating | HBM >2000 V - withstands handling and board-level ESD events without latch-up or parametric shift |
Pinout & Package
TSSOP-48 package (Case 1201, DT suffix), 12.5 mm × 6.1 mm body, 0.5 mm pitch, exposed pad not present, moisture sensitivity level (MSL) 1 - suitable for standard reflow and automated assembly without baking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OE1–OE4 (Pins 1, 24, 25, 48) | Nibble Output Enable Inputs | Active-low control per 4-bit group; allows selective bus gating without affecting other nibbles |
| D0–D15 (Pins 2,3,5,6,8–12,13–17,19–23,26,27,29,30,32,33,35–37,40,41,43,44,46,47) | Data Inputs | Inverting inputs - output logic state is complement of input; supports active-low signaling conventions |
| O0–O15 (Pins 2,3,5,6,8–12,13–17,19–23,26,27,29,30,32,33,35–37,40,41,43,44,46,47) | 3-State Outputs | High-impedance when corresponding OEn = HIGH; driven LOW/HIGH only when OEn = LOW |
| VCC (Pins 7,18,30,41) | Power Supply | Four dedicated VCC pins reduce IR drop and improve noise immunity across wide operating frequency range |
| GND (Pins 4,10,15,21,38,44) | Ground Reference | Six GND pins provide low-inductance return paths, critical for maintaining signal integrity at sub-4 ns switching |
Key Features
| Feature | Design Value |
|---|---|
| Nibble-wise 3-state control | Four independent OE inputs enable granular bus partitioning - e.g., isolate memory address vs. data lanes independently |
| 3.6 V-tolerant I/O | Eliminates need for discrete level translators when interfacing with 3.3 V peripherals in 1.8 V core systems |
| IOFF protection | Prevents current flow from I/O pins to VCC during power sequencing - essential for hot-plug PCIe or CompactPCI modules |
| Low ICC in all states | 40 µA quiescent current reduces total system power budget - critical for portable and energy-certified designs |
| Latch-up immunity | Exceeds ±250 mA @ 125°C - ensures robustness in industrial environments with voltage transients and thermal stress |
Applications
| Memory Bus Interface | Hot-Swappable Backplane |
|---|---|
|
Use Scenario: Isolating and driving address/data lines between a 1.8 V SoC and 3.3 V DDR2 memory controller. IC Role / Device Role / Timing Role: Inverting 3-state buffer providing voltage-tolerant bidirectional bus control with per-nibble enable. Use Value: Enables direct connection without level shifters; 3.0 ns propagation delay supports 333 MHz memory clock rates. |
Use Scenario: Enabling safe insertion/removal of line cards in telecom chassis with live backplane power. IC Role / Device Role / Timing Role: Bus isolator with IOFF and 3.6 V-tolerant I/O ensuring no backfeed during card insertion. Use Value: IOFF guarantees high-impedance outputs at VCC = 0 V, meeting Telcordia GR-1089-CORE surge and hot-swap requirements. |
| Low-Power Industrial Controller | Mixed-Voltage Sensor Hub |
|
Use Scenario: Driving 16-bit parallel sensor outputs (e.g., ADCs, encoders) into a 2.5 V microcontroller bus. IC Role / Device Role / Timing Role: Level-translating buffer with ±12 mA drive at 2.3 V, supporting 100 pF load capacitance. Use Value: Reduces BOM count by replacing discrete MOSFET translators; 40 µA ICC extends battery life in remote nodes. |
Use Scenario: Aggregating signals from 1.8 V temperature sensors, 3.3 V pressure transducers, and 2.5 V IMUs onto one host interface. IC Role / Device Role / Timing Role: Voltage-agnostic bus conditioner with independent nibble enables - allows per-sensor group enable/disable. Use Value: Four OE pins permit dynamic power gating of sensor clusters, cutting system idle current by >60%. |
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 |
|---|---|---|---|
| SN74ALVC16240DGGR | TSSOP-48, identical pinout and electrical specs; TI part with same 1.65–3.6 V range and 3.6 V-tolerant I/O | No functional difference; validated for same bus isolation and level translation use cases | Drop-in replacement with identical layout and firmware - preferred where TI sourcing or dual-sourcing is required |
| 74LVC16240APAG | TSSOP-48, same function but rated 1.65–3.6 V with lower drive (±24 mA @ 3.3 V only; ≤±12 mA below 2.7 V) | Marginally slower (4.2 ns max @ 3.3 V); lacks IOFF spec - unsuitable for hot-swap | Select only for cost-sensitive, non-hot-swap applications where full 1.8 V drive strength is not required |
Compared with SN74ALVC16240DGGR, the 74ALVC16240DT offers identical performance and pinout but different traceability and qualification history; versus 74LVC16240APAG, it delivers superior low-voltage drive and mandatory IOFF for live-insertion systems.
Availability
74ALVC16240DT is available at Aetrix Electronics and suitable for memory bus interface, hot-swappable backplane, low-power industrial controller, and mixed-voltage sensor hub applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for 74ALVC16240DT 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 specializing in energy-efficient power management, analog, logic, and sensor solutions for automotive, industrial, cloud, and IoT markets.
The 74ALVC16240DT belongs to the ALVC (Advanced Low-Voltage CMOS) logic family, engineered for high-speed, low-power operation in multi-voltage digital systems where signal integrity, voltage translation, and bus isolation are critical.
FAQ
What is the maximum operating frequency supported by the 74ALVC16240DT?
The 74ALVC16240DT does not specify a maximum clock frequency directly, but its propagation delay of 3.0 ns (max) at 3.0–3.6 V implies reliable operation up to approximately 333 MHz for toggle-based bus applications. Actual usable frequency depends on load capacitance, trace routing, and system timing margins - design validation with worst-case 30 pF loading and 500 Ω termination is recommended for high-speed deployments of the 74ALVC16240DT.
Can the 74ALVC16240DT be used with a 1.8 V supply and 3.3 V input signals?
Yes, the 74ALVC16240DT supports 1.8 V VCC operation while accepting 3.3 V input signals - its inputs are explicitly rated for 3.6 V tolerance per the datasheet. This allows safe interfacing between 1.8 V logic domains and 3.3 V peripherals without external clamping or level-shifting circuitry, a key capability confirmed for the 74ALVC16240DT in mixed-voltage system designs.
Does the 74ALVC16240DT support hot-swap functionality?
Yes, the 74ALVC16240DT supports hot-swap via its IOFF specification: when VCC = 0 V, all I/O pins enter a high-impedance state with leakage ≤10 µA, preventing backfeeding into unpowered circuitry. This behavior is tested and guaranteed per JESD78, making the 74ALVC16240DT suitable for live-insertion applications such as modular telecom line cards and server mezzanine boards.
How many output enable (OE) inputs does the 74ALVC16240DT have, and how are they assigned?
The 74ALVC16240DT has four independent output enable inputs: OE1 (Pin 1), OE2 (Pin 24), OE3 (Pin 25), and OE4 (Pin 48). Each controls a 4-bit nibble - OE1 governs D0–D3/O0–O3, OE2 governs D4–D7/O4–O7, OE3 governs D8–D11/O8–O11, and OE4 governs D12–D15/O12–O15 - enabling selective bus gating without affecting other data lanes in the 74ALVC16240DT.
What is the thermal resistance (θJA) of the 74ALVC16240DT in its TSSOP-48 package?
The 74ALVC16240DT in TSSOP-48 (Case 1201) has a specified junction-to-ambient thermal resistance (θJA) of 90 °C/W under JEDEC-standard test conditions: minimum pad spacing on FR4, 10 mm × 1 inch 2-ounce copper trace, no airflow. This value assumes proper PCB copper pour and thermal vias - actual θJA may improve to ~55–65 °C/W with optimized layout, critical for sustained 24 mA output drive in the 74ALVC16240DT.
74ALVC16240DT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74ALVC
- Package/Case:
- 48-TFSOP (0.240", 6.10mm 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-TSSOP
74ALVC16240DT FAQ
1.How can I place an order for 74ALVC16240DT through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ALVC16240DT 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 74ALVC16240DT reliable?
The price and inventory of 74ALVC16240DT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVC16240DT is usually 5 days.
3.What payment methods are accepted for 74ALVC16240DT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ALVC16240DT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ALVC16240DT?
74ALVC16240DT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ALVC16240DT 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 74ALVC16240DT?
For technical support, including 74ALVC16240DT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVC16240DT requirements.
6.How does Aetrix verify that 74ALVC16240DT is sourced from the original manufacturer or authorized distributors?
All 74ALVC16240DT 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 74ALVC16240DT meets industry standards.
7.What is the process for return or replacement of 74ALVC16240DT?
All 74ALVC16240DT units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVC16240DT, 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 74ALVC16240DT part is unused and in its original packaging.
Return procedure for 74ALVC16240DT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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