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Texas Instruments SN74LVC16244AGRDR
- Part No.:
- SN74LVC16244AGRDR
- Manufacturer:
- Texas Instruments
- Package:
- 54-TFBGA
- Datasheet:
-
SN74LVC16244AGRDR.pdf
- Description:
- IC BUFFER NON-INVERT 3.6V 54BGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,930
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Product details
Overview
SN74LVC16244AGRDR 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 SN74LVC16244AGRDR datasheet, SN74LVC16244AGRDR pinout, SN74LVC16244AGRDR application, or SN74LVC16244AGRDR equivalent, key selection criteria include its 3-state drive capability, Ioff support for live insertion, 5.5 V input tolerance across 1.65–3.6 V VCC, and compatibility with TSSOP-48 packaging for space-constrained PCB layouts.
Technical Context
This device implements sixteen true (noninverting) CMOS buffer channels grouped into four independent 4-bit banks, each controlled by a dedicated active-low OE input. Its architecture supports flexible bus isolation - enabling partial enablement of 4-, 8-, or 16-bit data paths without contention.
It integrates Ioff circuitry to disable current flow when VCC = 0 V, supporting live insertion and back-drive protection. Input voltage tolerance up to 5.5 V allows direct interfacing with legacy 5-V logic while operating from a 3.3-V supply - eliminating external level shifters in mixed-signal subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - enables single-supply operation across low-voltage embedded and industrial rails |
| Input Voltage Tolerance | Up to 5.5 V - permits direct connection to 5-V sources without clamping diodes or level shifters |
| Max Propagation Delay | 4.1 ns at VCC = 3.3 V - supports >200 MHz bus timing in memory and peripheral interfaces |
| Ioff Support | Active at VCC = 0 V - prevents power-rail contention during hot-plug or partial power-down |
| Output Drive Strength | ±24 mA per output at VCC = 3.0 V - drives standard TTL loads and light capacitive buses |
| ESD Rating | 2000 V HBM, 1000 V CDM - meets industrial handling requirements without special ESD controls |
| 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, 0.5 mm pitch, lead-free NiPdAu 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-Z state isolates bus segments |
| 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | Buffer input | 16 total CMOS inputs accepting 0–5.5 V; compatible with 3.3-V and 5-V logic families |
| 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | Buffer output | 16 true (noninverting) 3-state outputs; each drives ±24 mA at 3.0 V |
| VCC (Pins 7, 18, 31, 42) | Power supply | Four distributed VCC pins reduce IR drop and improve noise immunity on high-speed switching |
| GND (Pins 4, 10, 15, 21, 28, 34, 39, 45) | Ground reference | Eight GND pins provide low-inductance return paths for all 16 outputs and internal logic |
Key Features
| Feature | Design Value |
|---|---|
| Wide VCC range | 1.65 V to 3.6 V operation supports battery-backed, low-power, and dual-rail systems |
| 5.5-V tolerant inputs | Enables seamless interface between 3.3-V logic and legacy 5-V peripherals without external components |
| Ioff partial-power-down | Prevents damaging current flow when VCC is off - essential for hot-swap backplane and modular I/O designs |
| Low ground bounce (VOLP) | <0.8 V at VCC = 3.3 V - minimizes signal integrity risk in dense, multi-driver PCB layouts |
| High noise immunity | VIH/VIL thresholds scale with VCC (e.g., VIH = 0.65×VCC min) - ensures robust operation across voltage corners |
Applications
| Server Memory Address Drivers | Industrial I/O Expansion |
|---|---|
Use Scenario: Driving address lines from a 3.3-V CPU to multiple DDR SDRAM modules operating at 2.5 V or 1.8 V. IC Role / Device Role / Timing Role: Noninverting 16-bit buffer with per-group 3-state control isolates memory banks during refresh cycles. Use Value: Eliminates need for discrete level shifters; 4.1 ns tpd ensures setup/hold timing margins are maintained at 200+ MHz clock rates. |
Use Scenario: Interfacing a microcontroller's GPIO port to 24-V industrial sensors and actuators via optocoupler-isolated inputs/outputs. IC Role / Device Role / Timing Role: Signal conditioning and voltage translation layer between low-voltage logic and isolated field-side circuitry. Use Value: 5.5-V input tolerance accepts optocoupler output voltages directly; Ioff protects MCU during field-side power cycling. |
| PC Embedded Peripherals | Network Switch Control Plane |
Use Scenario: Buffering SMBus, LPC, or SPI signals between chipset and embedded controllers (ECs) in laptops and desktops. IC Role / Device Role / Timing Role: Bidirectional bus driver with independent OE control for dynamic bandwidth allocation across shared system management buses. Use Value: Four 4-bit groups allow selective enable/disable - reducing dynamic power by 75% when only one peripheral is active. |
Use Scenario: Isolating configuration and status signals between ASIC-based switch fabric and management MCU in 1U rack switches. IC Role / Device Role / Timing Role: High-density, low-skew buffer for register read/write strobes, reset distribution, and interrupt lines. Use Value: Symmetrical tPLH/tPHL (≤4.1 ns) ensures deterministic timing across 16 parallel control lines - critical for synchronized PHY initialization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buffer/driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16245ADGGR | Bidirectional transceiver with direction control (DIR); no separate OE per group | Requires external DIR logic; less granular bus isolation than SN74LVC16244AGRDR's four OE pins | Choose when bidirectional data flow is required and per-group enable is unnecessary |
| 74ALVC16244PW | Same function but lower drive (±24 mA @ VCC = 3.3 V vs. ±24 mA @ VCC = 3.0 V); identical pinout | Marginally slower tpd (4.5 ns max); same 5.5-V input tolerance and Ioff support | Acceptable for cost-sensitive designs where 0.4 ns timing margin is acceptable |
Compared with SN74LVC16244ADGGR and 74ALVC16244PW, the SN74LVC16244AGRDR offers the fastest propagation delay (4.1 ns), highest drive strength at lower VCC, and identical TSSOP-48 footprint - making it optimal for timing-critical industrial and telecom control planes.
Availability
SN74LVC16244AGRDR is available at Aetrix Electronics and suitable for server memory subsystems, industrial I/O expansion modules, and network switch control planes requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for SN74LVC16244AGRDR 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 over 50 years of innovation in high-reliability interface and power management ICs.
The SN74LVC16244AGRDR belongs to TI's Widebus™ family of advanced CMOS logic devices, engineered specifically to improve density and performance in 3-state memory address drivers, clock distribution networks, and bus-oriented receivers/transmitters.
FAQ
What is the maximum operating temperature for SN74LVC16244AGRDR?
The SN74LVC16244AGRDR is rated for operation from –40°C to +125°C ambient temperature, meeting extended industrial requirements. This rating is validated per JEDEC JESD78 and confirmed in the device's Recommended Operating Conditions table (Section 7.3 of SCAS699C). The thermal metrics (e.g., RθJA = 64.3°C/W for DGG package) support reliable operation within this range under typical PCB layout conditions.
Does SN74LVC16244AGRDR support live insertion or hot-swap applications?
Yes, SN74LVC16244AGRDR supports live insertion via its Ioff feature, which disables input/output leakage paths when VCC = 0 V. This prevents current backflow from powered downstream circuits into an unpowered device - a requirement for hot-pluggable modules in servers and telecom line cards. The feature is explicitly documented in Section 3 (Features) and Section 9.3 (Feature Description) of the datasheet.
Can SN74LVC16244AGRDR interface directly with 5-V logic inputs?
Yes, SN74LVC16244AGRDR accepts input voltages up to 5.5 V regardless of VCC (1.65–3.6 V), enabling direct connection to 5-V TTL or CMOS outputs without level-shifting circuitry. This is verified in Section 7.1 (Absolute Maximum Ratings) and Section 7.3 (Recommended Operating Conditions), where VI is specified as 0 to 5.5 V.
What is the pin-compatible replacement for SN74LVC16244AGRDR?
SN74LVC16244AGRDR has no pin-compatible drop-in replacement with identical OE grouping and drive strength. The SN74LVC16244ADGGR shares the same TSSOP-48 footprint and functional pinout but differs in marking and tape-and-reel packaging - not electrical or timing behavior. Any substitution requires validation of timing margins, especially tpd (4.1 ns max) and tdis (5.8 ns max at 3.3 V).
How many independent output-enable controls does SN74LVC16244AGRDR provide?
SN74LVC16244AGRDR 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 output group (Y1–Y4), allowing selective isolation of bus segments - a key differentiator from single-OE 16-bit buffers like the SN74LVC16245A.
SN74LVC16244AGRDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 54-TFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 54-BGA Microstar Junior (8x5.5)
SN74LVC16244AGRDR FAQ
1.How can I place an order for SN74LVC16244AGRDR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC16244AGRDR 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 SN74LVC16244AGRDR reliable?
The price and inventory of SN74LVC16244AGRDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC16244AGRDR is usually 5 days.
3.What payment methods are accepted for SN74LVC16244AGRDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC16244AGRDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC16244AGRDR?
SN74LVC16244AGRDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC16244AGRDR 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 SN74LVC16244AGRDR?
For technical support, including SN74LVC16244AGRDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC16244AGRDR requirements.
6.How does Aetrix verify that SN74LVC16244AGRDR is sourced from the original manufacturer or authorized distributors?
All SN74LVC16244AGRDR 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 SN74LVC16244AGRDR meets industry standards.
7.What is the process for return or replacement of SN74LVC16244AGRDR?
All SN74LVC16244AGRDR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC16244AGRDR, 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 SN74LVC16244AGRDR part is unused and in its original packaging.
Return procedure for SN74LVC16244AGRDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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