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Texas Instruments SN74LVC16244ADGGR
- Part No.:
- SN74LVC16244ADGGR
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
SN74LVC16244ADGGR.pdf
- Description:
- IC BUF NON-INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,820
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Product details
Overview
SN74LVC16244ADGGR from Texas Instruments is a 16-bit noninverting buffer/driver with 3-state outputs, designed for 1.65 V to 3.6 V operation. It features four independent 4-bit sections, each with active-low output-enable (OE) control, 5.5 V tolerant inputs, and a maximum propagation delay of 4.1 ns at 3.3 V - enabling high-speed bus interfacing in mixed-voltage systems such as server memory address drivers and industrial I/O expansion.
For engineers reviewing the SN74LVC16244ADGGR datasheet, SN74LVC16244ADGGR pinout, SN74LVC16244ADGGR application, or SN74LVC16244ADGGR equivalent, key selection criteria include its 3-state drive capability, Ioff support for live insertion, ±24 mA output current per channel at 3.0 V, and compatibility with both 3.3 V and 5 V input logic levels in multi-rail environments.
Technical Context
The SN74LVC16244ADGGR implements true (noninverting) buffering across 16 channels grouped into four independent 4-bit banks, each controlled by a dedicated active-low OE input. Its CMOS design supports rail-to-rail input voltage tolerance up to 5.5 V regardless of VCC, enabling seamless level translation between 5 V legacy peripherals and 3.3 V system logic.
Each output delivers symmetrical drive strength (±24 mA at VCC = 3.0 V), operates with low ground bounce (<0.8 V typical VOLP) and undershoot (>2 V VOHV), and includes Ioff circuitry that disables input/output leakage when VCC = 0 V - critical for hot-swap and partial-power-down applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - enables direct integration into modern low-voltage digital systems without level-shifting circuitry. |
| Input Voltage Tolerance | Up to 5.5 V - allows safe connection to 5 V TTL/CMOS sources while powered from 3.3 V or lower. |
| Max Propagation Delay | 4.1 ns at VCC = 3.3 V - supports >200 MHz data rates in address/data bus applications. |
| Output Drive Strength | ±24 mA at VCC = 3.0 V - sufficient to drive 50 Ω transmission lines or multiple CMOS loads without external buffers. |
| Ioff Support | Active at VCC = 0 V - prevents back-drive current and ensures isolation during hot-plug or power sequencing events. |
| ESD Rating | 2000 V HBM, 1000 V CDM - meets industrial handling requirements without additional protection components. |
| Operating Temperature | –40°C to +125°C - qualified for extended-temperature industrial and telecom infrastructure use. |
Pinout & Package
TSSOP-48 package (DGG), 12.50 mm × 6.10 mm body size, with exposed pad not present; RoHS-compliant, NIPDAU lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE | Active-low output enable | Individually disables 4-bit output group Y1–Y4; high-impedance state isolates bus segments. |
| 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | Input | 16 buffered inputs accepting 0–5.5 V; compatible with 5 V logic driving 3.3 V system buses. |
| 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | Noninverting 3-state output | 16 true outputs with ±24 mA drive; tri-states when corresponding OE is high. |
| VCC (Pins 7, 18, 31, 42) | Power supply | Four distributed VCC pins reduce IR drop and improve noise immunity across wide bus layouts. |
| GND (Pins 4, 10, 15, 21, 28, 34, 39, 45) | Ground reference | Eight GND pins provide low-inductance return paths and minimize ground bounce in high-speed switching. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode signal operation | 5 V-tolerant inputs on 3.3 V VCC enable direct interface between legacy 5 V peripherals and modern low-voltage processors. |
| Ioff partial-power-down support | Prevents damaging current flow when VCC = 0 V, allowing safe insertion/removal in powered-backplane systems. |
| Low ground bounce (VOLP) | <0.8 V typical at VCC = 3.3 V, TA = 25°C - reduces noise coupling into adjacent signal and power domains. |
| High-speed performance | 4.1 ns max tpd at 3.3 V supports timing-critical applications like DDR address latching and PCIe sideband routing. |
| Latch-up immunity | Exceeds 250 mA per JESD17 - eliminates risk of destructive latch-up under transient overvoltage or ESD stress. |
Applications
| Server Memory Address Drivers | Industrial I/O Expansion Modules |
|---|---|
|
Use Scenario: Driving parallel address buses between CPU/memory controller and multiple DDR SDRAM modules in rack-mounted servers. IC Role / Device Role / Timing Role: Noninverting 16-bit buffer providing fanout, noise margin enhancement, and bus isolation via per-group OE control. Use Value: Enables reliable 1.8 V/3.3 V memory subsystem operation with <4.1 ns propagation delay and Ioff-enabled safe power sequencing. |
Use Scenario: Interfacing microcontroller GPIOs to 24 V industrial sensors and actuators via optocoupler-isolated digital I/O cards. IC Role / Device Role / Timing Role: Level-translating buffer translating 3.3 V MCU logic to 5 V-compatible control signals while maintaining 3-state isolation. Use Value: Eliminates need for discrete level shifters; 5.5 V input tolerance allows direct connection to 5 V sensor logic outputs. |
| Network Switch Backplane Buffers | Automotive Infotainment Display Interfaces |
|
Use Scenario: Buffering control and status signals across high-density backplane connectors in enterprise Ethernet switches. IC Role / Device Role / Timing Role: 16-bit 3-state driver managing bidirectional configuration bus access between management MCU and PHY ICs. Use Value: Four independent OE pins allow dynamic segmentation of control bus traffic, reducing contention and improving debug visibility. |
Use Scenario: Driving parallel RGB/TTL display interfaces from automotive-grade SoCs to LCD panels in head units and digital clusters. IC Role / Device Role / Timing Role: High-current noninverting buffer delivering clean, slew-controlled pixel clock and data signals to panel timing controllers. Use Value: ±24 mA drive strength ensures fast edge rates into capacitive display loads; –40°C to +125°C rating matches AEC-Q100 ambient requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16245ADGGR | Inverting/noninverting dual-direction transceiver with DIR pin; no per-group OE; higher drive (±32 mA). | Requires direction control logic; unsuitable where independent 4-bit isolation is required. | Select only if bidirectional data flow and shared bus arbitration are needed instead of unidirectional segmented buffering. |
| 74ALVC16244PW | NXP variant in TSSOP-48; identical pinout and DC specs but slower max tpd (5.2 ns at 3.3 V); different thermal resistance (RθJA = 72.5°C/W). | Lower speed margin may limit use in >150 MHz address paths; same footprint allows drop-in replacement in less timing-critical designs. | Choose when TI supply constraints exist and timing budget permits 1.1 ns higher propagation delay. |
Compared with SN74LVC16244ADGGR, SN74LVC16245ADGGR trades per-group OE control for bidirectional capability, while 74ALVC16244PW offers footprint compatibility at reduced speed - making SN74LVC16244ADGGR optimal for segmented, high-speed, unidirectional bus isolation.
Availability
SN74LVC16244ADGGR is available at Aetrix Electronics and suitable for server memory subsystems, industrial I/O expansion modules, and network switch backplane interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74LVC16244ADGGR 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, with decades of expertise in high-reliability interface ICs and widebus architectures.
The SN74LVC16244ADGGR belongs to TI's LVC (Low-Voltage CMOS) Widebus™ family, engineered specifically to enhance density and timing performance of 3-state memory address drivers, clock distribution networks, and bus-oriented receivers in space-constrained, mixed-voltage systems.
FAQ
What is the maximum operating voltage for SN74LVC16244ADGGR inputs?
The SN74LVC16244ADGGR supports input voltages up to 5.5 V regardless of VCC level - a key feature enabling interoperability between 5 V legacy devices and 3.3 V or lower system logic. This tolerance is guaranteed across the full operating temperature range (–40°C to +125°C) and does not require external clamping diodes. The SN74LVC16244ADGGR maintains this specification even when VCC is as low as 1.65 V.
Does SN74LVC16244ADGGR support hot-swap or live-insertion applications?
Yes, SN74LVC16244ADGGR includes Ioff circuitry that actively disables input and output leakage paths when VCC = 0 V, preventing back-drive current and ensuring safe insertion into powered backplanes. This feature is validated per JEDEC JESD78 and supports partial-power-down modes - making SN74LVC16244ADGGR suitable for modular server, telecom, and industrial chassis where field-replaceable units must be added or removed without system shutdown.
What is the pin-compatible alternative for SN74LVC16244ADGGR in TVSOP packaging?
The SN74LVC16244ADGVR is the TVSOP-48 (DGV) variant of the same device, sharing identical logic functionality, pinout, and electrical specifications - including 1.65 V to 3.6 V VCC operation, 5.5 V input tolerance, and 4.1 ns max tpd at 3.3 V. Its smaller 9.70 mm × 4.40 mm footprint suits space-constrained PCBs, though thermal resistance differs (RθJA = 78.4°C/W vs. 64.3°C/W for DGG). SN74LVC16244ADGVR is a direct functional and pin-compatible alternative.
How many independent output-enable controls does SN74LVC16244ADGGR provide?
SN74LVC16244ADGGR provides four independent active-low output-enable inputs (1OE, 2OE, 3OE, 4OE), each controlling a dedicated 4-bit output group (Y1–Y4 per section). This architecture enables granular bus segmentation - for example, isolating memory address lanes from control signals while maintaining data path continuity. No shared OE pin exists; all four enables operate independently and simultaneously.
What is the recommended bypass capacitor strategy for SN74LVC16244ADGGR?
TI recommends placing a 0.1 μF ceramic capacitor near each of the four VCC pins (7, 18, 31, 42) of SN74LVC16244ADGGR to suppress high-frequency noise and stabilize local supply rails. For enhanced broadband decoupling, pair each 0.1 μF cap with a 1 μF bulk capacitor on the board-level VCC plane. All capacitors must be placed within 3 mm of their respective VCC pin and connected to the nearest GND pin using short, low-inductance traces - critical for maintaining signal integrity at sub-5 ns propagation delays.
SN74LVC16244ADGGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
SN74LVC16244ADGGR FAQ
1.How can I place an order for SN74LVC16244ADGGR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC16244ADGGR 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 SN74LVC16244ADGGR reliable?
The price and inventory of SN74LVC16244ADGGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC16244ADGGR is usually 5 days.
3.What payment methods are accepted for SN74LVC16244ADGGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC16244ADGGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC16244ADGGR?
SN74LVC16244ADGGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC16244ADGGR 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 SN74LVC16244ADGGR?
For technical support, including SN74LVC16244ADGGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC16244ADGGR requirements.
6.How does Aetrix verify that SN74LVC16244ADGGR is sourced from the original manufacturer or authorized distributors?
All SN74LVC16244ADGGR 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 SN74LVC16244ADGGR meets industry standards.
7.What is the process for return or replacement of SN74LVC16244ADGGR?
All SN74LVC16244ADGGR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC16244ADGGR, 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 SN74LVC16244ADGGR part is unused and in its original packaging.
Return procedure for SN74LVC16244ADGGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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