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Texas Instruments SN74AUC16240ZQLR
- Part No.:
- SN74AUC16240ZQLR
- Manufacturer:
- Texas Instruments
- Package:
- 56-VFBGA
- Datasheet:
-
SN74AUC16240ZQLR.pdf
- Description:
- IC BUFFER INVERT 2.7V 56BGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,031
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Product details
Overview
SN74AUC16240ZQLR from Texas Instruments is a 16-bit inverting 3-state buffer/driver optimized for 1.65-V to 1.95-V operation, delivering 2 ns max propagation delay at 1.8 V, ±8-mA output drive, and Ioff-enabled partial-power-down protection. It serves as a high-density memory address or bus driver in low-voltage DDR memory subsystems and FPGA I/O expansion interfaces.
For engineers reviewing the SN74AUC16240ZQLR datasheet, SN74AUC16240ZQLR pinout, SN74AUC16240ZQLR application, or SN74AUC16240ZQLR equivalent, key selection criteria include sub-2-ns timing at 1.8 V, 3.6-V I/O tolerance for mixed-mode interfacing, symmetrical active-low OE control, and VFBGA-48 (GQL) package compatibility with high-pin-count space-constrained PCB layouts.
Technical Context
This device implements four independent 4-bit inverting buffers, each with dedicated active-low output-enable (OE) inputs and fully rail-to-rail 1.8-V logic-compatible outputs. Its Ioff circuitry actively disables outputs during power-down, blocking reverse current flow when VCC = 0 V while inputs/outputs remain biased up to 3.6 V.
The SN74AUC16240ZQLR operates across 0.8 V–2.7 V VCC but is characterized and optimized for 1.65 V–1.95 V supply range, supporting JEDEC-compliant 1.8-V LVTTL and sub-1-V operation. Input thresholds scale with VCC (VIH = 0.65×VCC, VIL = 0.35×VCC), ensuring robust noise margins in low-voltage systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 0.8 V to 2.7 V; fully functional down to 0.8 V, specified for reliable 1.65–1.95 V operation in 1.8-V systems. |
| Max tpd | 2 ns at 1.8 V; enables high-speed address/data buffering in DDR2/DDR3 memory controllers and FPGA I/O bridges. |
| Output Drive | ±8 mA at 1.8 V; sufficient to drive 50-Ω transmission lines or fan-out to ≥10 LVTTL loads without external termination. |
| Ioff Support | Active at VCC = 0 V; prevents backflow current during hot-insertion or partial power-down, critical for system-level power sequencing. |
| I/O Tolerance | 3.6-V tolerant inputs/outputs; allows safe interfacing between 1.8-V logic and 3.3-V peripherals without level shifters. |
| ICC (max) | 20 µA; ultra-low static power enables use in always-on subsystems and battery-backed memory buffers. |
| ESD Rating | 2000-V HBM, 200-V MM, 1000-V CDM; meets industrial-grade robustness requirements for board-level handling and field operation. |
Pinout & Package
VFBGA-48 (GQL) package, 3.5 mm × 4.5 mm, 0.5-mm pitch, 0.75-mm height - optimized for high-density portable and embedded applications requiring minimal PCB footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | Input (4 groups × 4 bits) | Non-inverted data inputs feeding respective 4-bit inverting buffer sections. |
| 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | Inverting Output (4 groups × 4 bits) | Complemented outputs; high-impedance when corresponding OE is high. |
| 1OE, 2OE, 3OE, 4OE | Active-Low Output Enable | Independent per-group control; all outputs go high-Z when asserted (low). |
| VCC | Supply Voltage | Single 0.8–2.7-V supply; multiple VCC pins distributed for low-noise power delivery. |
| GND | Ground | Multiple GND pins placed adjacent to VCC and I/O banks to minimize ground bounce and improve signal integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Sub-2-ns propagation delay at 1.8 V | Enables ≤500-MHz bus clocking in memory interface applications without timing closure penalties. |
| 3.6-V I/O tolerance with 1.8-V core | Eliminates need for discrete level translators when interfacing with 3.3-V legacy peripherals or PMICs. |
| Partial-power-down support via Ioff | Permits live insertion/removal of daughterboards or modular subsystems without disrupting main system power rails. |
| Symmetrical active-low OE inputs | Allows direct connection to FPGA GPIO or microcontroller pins without inverters, simplifying control logic design. |
| Low input/output capacitance (Ci = 4 pF, Co = 6 pF) | Reduces switching noise and dynamic power consumption in high-frequency, multi-load bus environments. |
Applications
| DDR Memory Address Buffering | FPGA I/O Expansion Interface |
|---|---|
|
Use Scenario: Driving row/column address signals from a memory controller to DDR2 SDRAM modules in space-constrained mobile SoM designs. IC Role / Device Role / Timing Role: 16-bit inverting buffer providing timing-aligned, slew-controlled address propagation with 2-ns tpd margin at 1.8 V. Use Value: Eliminates address skew across 16-bit bus while maintaining JEDEC 1.8-V compliance and enabling direct connection to DDR2 address pins. |
Use Scenario: Expanding FPGA GPIO count to drive external sensors, displays, and communication peripherals in industrial edge nodes. IC Role / Device Role / Timing Role: Bidirectional-capable 3-state buffer isolating FPGA I/O banks from noisy peripheral buses with independent OE control per 4-bit group. Use Value: Provides configurable 4/8/16-bit bus partitioning, 3.6-V tolerance for mixed-voltage peripherals, and Ioff protection during FPGA reconfiguration. |
| Low-Power Microcontroller Bus Driver | Hot-Swappable Module Interface |
|
Use Scenario: Interfacing an ARM Cortex-M7 MCU's parallel bus to external SRAM or NOR flash in battery-powered medical devices. IC Role / Device Role / Timing Role: Inverting 16-bit buffer translating 1.8-V MCU bus signals to 3.3-V memory interface with precise VIH/VIL thresholds. Use Value: Delivers <20-µA ICC quiescent current and 0.35×VCC/0.65×VCC input thresholds-ensuring reliable operation across full 1.65–1.95-V VCC range. |
Use Scenario: Enabling hot-plug capability for mezzanine cards in telecom baseband processing units with strict power sequencing requirements. IC Role / Device Role / Timing Role: Isolation buffer enforcing high-impedance state during card insertion/removal using Ioff and controlled OE pull-up. Use Value: Prevents backdrive current into powered-down modules, satisfies JESD78 Class II latch-up immunity (>100 mA), and supports zero-downtime field maintenance. |
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 |
|---|---|---|---|
| SN74AVC16240DGVR | Higher VCC range (1.2–3.6 V); 3.5 ns tpd at 1.8 V; lower drive (±6 mA); no Ioff. | Less suitable for partial-power-down systems; better for wider supply variation where ultra-low delay is secondary. | Select when broader voltage flexibility is needed and Ioff is not required. |
| SN74LVC16240ADGGR | 3.3-V nominal; 3.8 ns tpd at 3.3 V; ±24 mA drive; Ioff supported; 3.6-V tolerant. | Designed for 3.3-V domains; higher drive supports longer traces but consumes more power at 1.8 V (not rated). | Select for legacy 3.3-V systems or when higher output current is mandatory; not recommended for 1.8-V-only designs. |
Compared with SN74AUC16240ZQLR, SN74AVC16240DGVR trades 1.5 ns speed for wider voltage range and no Ioff, while SN74LVC16240ADGGR offers higher drive at 3.3 V but lacks sub-2-ns performance and true 1.8-V optimization-making SN74AUC16240ZQLR the only choice for timing-critical, ultra-low-voltage, power-aware 16-bit buffering.
Availability
SN74AUC16240ZQLR is available at Aetrix Electronics and suitable for DDR memory subsystems, FPGA I/O expansion, low-power microcontroller bus interfaces, and hot-swappable module interfaces requiring stable component supply and long-term industrial availability.
Supply support for SN74AUC16240ZQLR 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 specializing in analog, embedded processing, and digital signal processing technologies, with over 50 years of innovation in high-performance logic and interface solutions.
The SN74AUC16240ZQLR belongs to TI's Widebus™ family of advanced CMOS logic devices, engineered specifically to deliver ultra-fast, low-voltage, high-density bus interface solutions for next-generation memory and programmable logic systems.
FAQ
What is the minimum operating voltage for SN74AUC16240ZQLR?
The SN74AUC16240ZQLR is fully operational down to 0.8 V, but it is specifically designed and characterized for optimal performance within the 1.65-V to 1.95-V range-aligning precisely with JEDEC 1.8-V standards. At 0.8 V, parameters such as tpd and drive strength degrade predictably per datasheet curves, and functionality remains guaranteed per absolute maximum ratings.
Does SN74AUC16240ZQLR support hot-swap or partial-power-down operation?
Yes, SN74AUC16240ZQLR includes integrated Ioff circuitry that disables outputs when VCC = 0 V, preventing damaging current backflow from live I/O lines into the unpowered device. This feature is explicitly validated per JESD78 Class II latch-up testing and enables safe hot-plug operation in modular systems where subsystems power up/down independently.
What is the pinout configuration of SN74AUC16240ZQLR?
SN74AUC16240ZQLR uses a 48-ball VFBGA (GQL) package with a 0.5-mm pitch. Pin assignments follow TI's standard GQL layout: four independent 4-bit input groups (1A–4A), corresponding inverting outputs (1Y–4Y), four active-low OE controls (1OE–4OE), eight VCC and eight GND balls distributed for low-inductance power delivery, and no NC pins. Full mapping is documented in SCES390E Figure 2.
Can SN74AUC16240ZQLR interface directly with 3.3-V devices?
Yes, SN74AUC16240ZQLR features 3.6-V tolerant inputs and outputs while operating from a 1.8-V supply-enabling direct connection to 3.3-V peripherals without external level shifters. Input thresholds scale with VCC (VIH = 0.65×VCC), ensuring reliable recognition of 3.3-V logic highs even at minimum 1.65-V VCC.
What is the maximum output drive capability of SN74AUC16240ZQLR at 1.8 V?
SN74AUC16240ZQLR delivers ±8 mA output drive at 1.8 V, as specified in the electrical characteristics table under IOL/IOH test conditions. This drive strength supports fan-out to ≥10 LVTTL loads or driving 50-Ω transmission lines with controlled edge rates, verified across temperature and voltage corners per SCES390E Section 5.
SN74AUC16240ZQLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AUC
- Package/Case:
- 56-VFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Inverting
- Number of Elements:
- 4
- Number of Bits per Element:
- 4
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 9mA, 9mA
- Voltage - Supply:
- 0.8V ~ 2.7V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-BGA Microstar Junior (7x4.5)
SN74AUC16240ZQLR FAQ
1.How can I place an order for SN74AUC16240ZQLR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AUC16240ZQLR 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 SN74AUC16240ZQLR reliable?
The price and inventory of SN74AUC16240ZQLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AUC16240ZQLR is usually 5 days.
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4.How is shipping managed for SN74AUC16240ZQLR?
SN74AUC16240ZQLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AUC16240ZQLR 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 SN74AUC16240ZQLR?
For technical support, including SN74AUC16240ZQLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AUC16240ZQLR requirements.
6.How does Aetrix verify that SN74AUC16240ZQLR is sourced from the original manufacturer or authorized distributors?
All SN74AUC16240ZQLR 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 SN74AUC16240ZQLR meets industry standards.
7.What is the process for return or replacement of SN74AUC16240ZQLR?
All SN74AUC16240ZQLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AUC16240ZQLR, 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 SN74AUC16240ZQLR part is unused and in its original packaging.
Return procedure for SN74AUC16240ZQLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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