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Texas Instruments SN74LVCH16244ADGG
- Part No.:
- SN74LVCH16244ADGG
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
SN74LVCH16244ADGG.pdf
- Description:
- IC BUFF NON-INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:17,800
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Product details
Overview
SN74LVCH16244ADGG from Texas Instruments is a 16-bit noninverting buffer/driver with 3-state outputs, designed for 1.65-V to 3.6-V VCC operation. It functions as four independent 4-bit buffers (each with dedicated active-low OE), supports 5.5-V tolerant inputs, delivers ≤4.1 ns propagation delay at 3.3 V, and features bus-hold on all data inputs-enabling direct interface between 3.3-V logic and 5-V systems in memory address or bus driving applications.
For engineers reviewing the SN74LVCH16244ADGG datasheet, SN74LVCH16244ADGG pinout, SN74LVCH16244ADGG application, or SN74LVCH16244ADGG equivalent, key selection criteria include its Ioff-enabled partial-power-down capability, symmetrical output drive (±24 mA at 3 V), 48-pin TSSOP (DGG) package compatibility, and verified mixed-voltage translation performance across server, networking, and embedded computing platforms.
Technical Context
The SN74LVCH16244ADGG implements four independent 4-bit noninverting buffer sections, each with dedicated active-low output-enable (OE) control and true (noninverted) output logic. Its CMOS design enables rail-to-rail input voltage tolerance up to 5.5 V regardless of VCC (1.65–3.6 V), allowing seamless down-translation from 5-V peripherals to 3.3-V buses.
Each buffer section integrates bus-hold circuitry on all A-inputs to maintain valid logic states without external resistors, and employs Ioff protection to block current backflow during power sequencing or partial power-down-critical for hot-swap and multi-rail system integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - Enables operation across industrial, telecom, and embedded supply rails including 1.8-V, 2.5-V, and 3.3-V domains. |
| Input Voltage Tolerance | Up to 5.5 V - Permits direct connection to 5-V TTL/CMOS sources without level-shifting circuitry. |
| tpd (Max) | 4.1 ns at VCC = 3.3 V - Supports high-speed bus buffering in DDR memory interfaces and PCIe sideband signal routing. |
| IOL / IOH (Max) | ±24 mA at VCC = 3 V - Drives moderate capacitive loads (e.g., 10–15 pF traces + multiple gate inputs) without signal degradation. |
| Bus-Hold Current | ±75 µA at VCC = 3 V - Actively holds floating inputs at valid logic levels, eliminating need for external pullup/pulldown resistors. |
| Ioff Leakage | ±10 µA at VCC = 0 V - Prevents damaging back-current flow when device is powered off but connected to live buses. |
| ESD Rating | 2000-V HBM - Meets JEDEC JESD22-A114 standard for robust handling in automated assembly environments. |
Pinout & Package
TSSOP-48 (DGG) package: 12.50 mm × 6.10 mm body, 0.5-mm pitch, lead-free NiPdAu finish, moisture sensitivity level 1 (260°C reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 24, 25, 48 | 1OE, 4OE, 3OE, 2OE | Active-low output enable controls for Groups 1–4 (4 bits each); tied high via pullup for default high-Z during power-up. |
| 2–6, 8–12, 13–17, 19–23 | 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | True (noninverting) 3-state outputs; each group isolated by its OE; capable of ±24 mA drive at 3 V. |
| 43–47, 37–41, 32–36, 26–30 | 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | 5.5-V tolerant data inputs with integrated bus-hold; eliminate external biasing in unterminated or lightly loaded buses. |
| 4, 10, 15, 21, 28, 34, 39, 45 | GND | Eight ground terminals - reduce ground bounce and improve noise immunity in high-speed switching. |
| 7, 18, 31, 42 | VCC | Four power pins - support low-impedance local decoupling (0.01–0.1 µF per pin) to suppress supply transients. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-voltage interface | 5.5-V tolerant inputs operate reliably with 1.65–3.6-V VCC - enables single-chip translation between legacy 5-V peripherals and modern 3.3-V SoCs. |
| Bus-hold circuitry | Integrated on all 16 A-inputs - maintains stable logic state during signal glitches or open-bus conditions without external components. |
| Ioff partial-power-down | Blocks current flow when VCC = 0 V - protects powered subsystems during hot-plug, power sequencing, or fault isolation. |
| Low ground bounce | Typical VOLP < 0.8 V at VCC = 3.3 V - minimizes noise coupling into adjacent signals during simultaneous output switching. |
| High-speed propagation | Max tpd = 4.1 ns at 3.3 V - meets timing budgets for DDR2/DDR3 address/control buffering and PCIe reference clock distribution. |
Applications
| Memory Address Buffering | Server Backplane Interface |
|---|---|
Use Scenario: Driving address lines from a 3.3-V CPU to multiple 5-V SRAM chips in a legacy-compatible memory subsystem. IC Role / Device Role / Timing Role: Noninverting 16-bit buffer with per-group OE control isolates memory banks and synchronizes address strobes. Use Value: Eliminates discrete level shifters while maintaining ≤4.1 ns skew across all 16 lines-preserving setup/hold margins at 100-MHz bus rates. | Use Scenario: Interfacing a 3.3-V baseboard management controller (BMC) to 5-V peripheral slots in a modular server chassis. IC Role / Device Role / Timing Role: Bidirectional signal conditioner for SMBus, IPMI, and reset signaling with live-insertion support. Use Value: Ioff protection prevents backfeed during hot-swap events; bus-hold maintains slot presence detection even when BMC is powered down. |
| Network Switch Control Plane | Industrial PLC I/O Expansion |
Use Scenario: Buffering configuration registers and status flags between a 3.3-V FPGA and multiple 5-V PHY controllers in a 10-GbE switch fabric. IC Role / Device Role / Timing Role: 4-group 4-bit driver enabling independent enable/disable of PHY-specific control buses (MDIO, reset, LED, interrupt). Use Value: 5.5-V input tolerance allows direct connection to 5-V PHY I/Os; low tpd ensures sub-5-ns latency for real-time link training sequences. | Use Scenario: Isolating digital I/O expansion modules (e.g., 24-V discrete inputs) from a 3.3-V ARM-based PLC mainboard. IC Role / Device Role / Timing Role: Level-translating buffer for optocoupler-driven input conditioning and relay-driver enable signals. Use Value: Withstands 5-V field-side transients; Ioff prevents module removal from disrupting mainboard power; bus-hold avoids spurious triggers during cable disconnect. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16244ADGGR | Lacks bus-hold and Ioff; max VCC = 3.6 V but inputs limited to VCC + 0.3 V (no 5.5-V tolerance). | Suitable only in fully 3.3-V systems with no hot-swap or floating-input risk. | Select only if cost sensitivity outweighs mixed-voltage and power-down robustness requirements. |
| 74ALVCH16244DLR | Higher VCC range (2.3–3.6 V); identical pinout but SSOP-48 package (15.88 mm × 7.49 mm vs. DGG's 12.50 mm × 6.10 mm). | Requires PCB layout change; offers same electrical specs but larger footprint and higher thermal resistance (RθJA = 68.4°C/W vs. DGG's 64.3°C/W). | Choose for legacy SSOP-compatible designs or where higher drive strength at 2.5 V is prioritized over board space. |
Compared with SN74LVC16244ADGGR and 74ALVCH16244DLR, the SN74LVCH16244ADGG uniquely combines 5.5-V input tolerance, Ioff, and bus-hold in a compact TSSOP-48 package-making it the only option qualified for mixed-voltage, hot-plug, and floating-bus scenarios without redesign.
Availability
SN74LVCH16244ADGG is available at Aetrix Electronics and suitable for servers, network switches, and industrial PLCs requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for SN74LVCH16244ADGG 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 logic solutions for industrial, automotive, and communications markets.
The SN74LVCH16244ADGG belongs to TI's Widebus™ family of advanced logic devices, engineered specifically to enhance density and performance of 3-state memory address drivers, clock distribution networks, and bus-oriented receivers/transmitters in high-reliability systems.
FAQ
What is the maximum input voltage rating for SN74LVCH16244ADGG?
The SN74LVCH16244ADGG supports input voltages up to 5.5 V across its entire operating VCC range (1.65–3.6 V). This overvoltage tolerance is explicitly specified in the Absolute Maximum Ratings table and enables direct interfacing with 5-V TTL or CMOS logic without external level-shifting circuitry-verified in TI's SCES494B datasheet Section 7.1.
Does SN74LVCH16244ADGG support partial power-down operation?
Yes, SN74LVCH16244ADGG includes Ioff circuitry that disables all outputs and blocks current backflow when VCC = 0 V. This feature is documented in Section 9.3 and Section 7.5 (Ioff = ±10 µA), making SN74LVCH16244ADGG suitable for hot-plug applications and multi-rail systems where subsystems power up/down independently.
How many independent output-enable controls does SN74LVCH16244ADGG provide?
SN74LVCH16244ADGG provides four independent active-low output-enable inputs: 1OE (Pin 1), 2OE (Pin 48), 3OE (Pin 25), and 4OE (Pin 24). Each controls a dedicated 4-bit buffer group (Y1–Y4, Y5–Y8, etc.), enabling selective bus isolation-confirmed in the Pin Functions table (Section 6) and Functional Block Diagram (Section 9.2).
What package type and dimensions does SN74LVCH16244ADGG use?
SN74LVCH16244ADGG uses the TSSOP-48 (DGG) package with nominal body dimensions of 12.50 mm × 6.10 mm and 0.5-mm lead pitch. This is specified in the Device Information table (Section 3) and Packaging Addendum, and confirmed by orderable part number SN74LVCH16244ADGGR.B in TI's official packaging documentation.
Is bus-hold functionality integrated into SN74LVCH16244ADGG?
Yes, SN74LVCH16244ADGG integrates bus-hold circuitry on all 16 A-inputs (1A1–4A4), eliminating the need for external pullup or pulldown resistors. The hold current is ±75 µA at VCC = 3 V (Section 7.5), and this feature is highlighted in both the Features and Detailed Description sections of the SCES494B datasheet.
SN74LVCH16244ADGG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVCH
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- Buffer, Non-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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
SN74LVCH16244ADGG FAQ
1.How can I place an order for SN74LVCH16244ADGG through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVCH16244ADGG 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 SN74LVCH16244ADGG reliable?
The price and inventory of SN74LVCH16244ADGG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVCH16244ADGG is usually 5 days.
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Once your SN74LVCH16244ADGG 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 SN74LVCH16244ADGG?
For technical support, including SN74LVCH16244ADGG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVCH16244ADGG requirements.
6.How does Aetrix verify that SN74LVCH16244ADGG is sourced from the original manufacturer or authorized distributors?
All SN74LVCH16244ADGG 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 SN74LVCH16244ADGG meets industry standards.
7.What is the process for return or replacement of SN74LVCH16244ADGG?
All SN74LVCH16244ADGG units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVCH16244ADGG, 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 SN74LVCH16244ADGG part is unused and in its original packaging.
Return procedure for SN74LVCH16244ADGG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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