My Inquiry
My Account
Texas Instruments 74ALVTH16244DLRG4
- Part No.:
- 74ALVTH16244DLRG4
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
74ALVTH16244DLRG4.pdf
- Description:
- IC BUFFER NON-INVERT 3.6V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,735
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74ALVTH16244DLRG4 from Texas Instruments is a 16-bit noninverting buffer/driver with 3-state outputs, designed for 2.5-V/3.3-V VCC operation and 5-V I/O tolerance. It delivers ±32 mA high-drive capability, supports mixed-mode signal interfacing (5-V inputs/outputs with 3.3-V VCC), and features bus-hold on all data inputs to eliminate external pull resistors. It is used in backplane buffering, memory address/data bus driving, and level-shifting between 3.3-V logic and legacy 5-V systems.
For engineers reviewing the 74ALVTH16244DLRG4 datasheet, 74ALVTH16244DLRG4 pinout, 74ALVTH16244DLRG4 application, or 74ALVTH16244DLRG4 equivalent, key selection considerations include its 48-pin SSOP (DL) package, auto-3-state behavior, Ioff support for hot insertion, 2.3–3.6-V operational range, and guaranteed 2.4-ns propagation delay at 3.3 V with 50-pF load.
Technical Context
This device implements four independent 4-bit noninverting buffers, each controlled by a dedicated output-enable (OE) input. Its Advanced BiCMOS Technology (ABT) architecture enables low static power dissipation while maintaining TTL-compatible thresholds and robust 5-V-tolerant I/Os under 3.3-V supply.
The integrated bus-hold circuitry actively maintains valid logic levels on floating data inputs without external components, and the auto-3-state feature forces outputs into high-impedance when output voltage exceeds VCC, preventing bus contention during power sequencing or fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3 V to 3.6 V - supports unregulated battery operation down to 2.3 V and stable 3.3-V system rail compliance. |
| Drive Strength | –32 mA / +32 mA - sufficient to drive heavy capacitive loads (e.g., 15+ cm PCB traces or multiple CMOS inputs) without signal degradation. |
| Propagation Delay | 1 ns (min) to 2.4 ns (max) at VCC = 3.3 V, CL = 50 pF - enables reliable operation in high-speed digital buses up to ~200 MHz. |
| Ioff | ±100 µA at VCC = 0 V - blocks damaging current backflow during hot insertion or partial power-down of system modules. |
| Bus-Hold Current | ±75 µA at VCC = 3 V - ensures stable logic retention on unused inputs without external biasing, reducing BOM count and layout complexity. |
| ESD Rating | >2000 V HBM - meets MIL-STD-883 Class 3015 requirements for handling robustness in manufacturing and field environments. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded control, communications infrastructure, and test equipment applications. |
Pinout & Package
74ALVTH16244DLRG4 is housed in a 48-pin Plastic Shrink Small-Outline Package (SSOP, DL), 300-mil body width, 0.5-mm lead pitch, JEDEC MO-153 compliant, with maximum height of 1.2 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE | Group Output Enable (active-low) | Each controls one 4-bit buffer section; asserted low enables corresponding Y outputs, high places them in 3-state. |
| 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | Data Inputs | 16 total inputs with integrated bus-hold; no external pull-up/down required for floating states. |
| 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | Buffered Outputs | Noninverting, 3-state, 5-V tolerant; auto-3-state activates if output voltage exceeds VCC. |
| VCC (Pins 7, 20, 31, 44) | Power Supply | Four distributed VCC pins reduce supply noise and improve decoupling effectiveness across wide die. |
| GND (Pins 4, 10, 15, 27, 32, 39) | Ground Reference | Six GND pins provide low-inductance return paths and minimize ground bounce (VOLP < 0.8 V typical). |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode I/O compatibility | Accepts 0–5.5-V input signals and drives 5-V-tolerant outputs while powered from 2.3–3.6-V VCC, enabling seamless interface between 3.3-V logic and legacy 5-V subsystems. |
| Auto-3-state protection | Automatically disables outputs when VO > VCC, eliminating risk of bus contention during hot-swap or power-rail mismatch events without external supervision circuitry. |
| Hot-insertion support | Combines Ioff (prevents back-current) and power-up 3-state (holds outputs high-Z until VCC stabilizes above 1.2 V), allowing safe module replacement in live backplanes. |
| Integrated bus-hold | Actively clamps unused data inputs to last-valid logic state using internal feedback, removing need for 10-kΩ external pull resistors and saving board space and assembly cost. |
| Low ground bounce | Typical VOLP < 0.8 V at VCC = 3.3 V ensures clean signal integrity during simultaneous switching of multiple outputs, critical for noise-sensitive analog co-location. |
Applications
| Backplane Bus Buffering | Memory Address/Data Driving |
|---|---|
|
Use Scenario: Isolating and strengthening address/data signals between CPU and multi-slot backplane in industrial PLC or telecom shelf. IC Role / Device Role / Timing Role: Noninverting 16-bit buffer providing level translation and fanout expansion between 3.3-V processor and 5-V peripheral cards. Use Value: Eliminates timing skew across long traces via low 2.4-ns max propagation delay and prevents bus contention with auto-3-state during card insertion/removal. |
Use Scenario: Driving SRAM or Flash memory address and data buses in embedded controllers where drive strength exceeds microcontroller GPIO capability. IC Role / Device Role / Timing Role: High-current (±32 mA) buffer ensuring fast, monotonic edge transitions into 30–50-pF memory bus capacitance. Use Value: Guarantees setup/hold margin with sub-3-ns tPLH/tPHL and eliminates floating input risk via bus-hold on unused address lines. |
| Legacy System Interface Adapter | Hot-Swappable Module I/O Expansion |
|
Use Scenario: Bridging modern 3.3-V FPGA I/O banks to legacy 5-V instrumentation or sensor interfaces in test equipment. IC Role / Device Role / Timing Role: Bidirectional voltage-level translator with 5-V-tolerant inputs and outputs, operating from 3.3-V supply only. Use Value: Enables direct connection without external level shifters or dual-supply design, reducing component count and signal path complexity. |
Use Scenario: Providing isolated, hot-pluggable I/O expansion on modular industrial I/O cards with independent power domains. IC Role / Device Role / Timing Role: 3-state buffer with Ioff and power-up 3-state ensuring zero current injection during module insertion into live backplane. Use Value: Prevents system reset or latch-up during field maintenance, meeting IEC 61000-4-2 and MIL-STD-1399 safety 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 |
|---|---|---|---|
| SN74ALVCH16244GR | Lower VCC range (1.65–3.6 V); no 5-V I/O tolerance; higher speed (1.8 ns max tPHL at 3.3 V). | Not suitable for mixed-voltage 5-V interface; better for ultra-low-voltage portable designs with strict power budgets. | Select only if 5-V compatibility is unnecessary and sub-2-ns timing is critical; requires redesign for I/O voltage margins. |
| SN74LVC16244ADGGR | 3.3-V-only I/O (no 5-V tolerance); lower drive (±24 mA); same 48-pin TSSOP package. | Cannot interface directly to 5-V peripherals; requires external level shifters in mixed-voltage systems. | Choose for cost-sensitive, single-rail 3.3-V systems where 5-V interoperability is absent; verify bus-hold absence does not require external biasing. |
Compared with SN74ALVCH16244GR and SN74LVC16244ADGGR, the 74ALVTH16244DLRG4 uniquely combines 5-V I/O tolerance, auto-3-state, and bus-hold in a single industrial-temperature 48-pin SSOP, making it irreplaceable in legacy-interfacing and hot-swap-critical applications without voltage translation overhead.
Availability
74ALVTH16244DLRG4 is available at Aetrix Electronics and suitable for industrial backplane buffering, memory subsystem driving, and mixed-voltage interface adapter applications requiring stable component supply and long-term lifecycle support.
Supply support for 74ALVTH16244DLRG4 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 connectivity technologies, with decades of expertise in high-reliability logic and interface solutions.
The ALVTH family was engineered specifically for robust 3.3-V system interfacing with legacy 5-V infrastructure, targeting industrial control, telecom, and test equipment where voltage translation, hot-swap resilience, and signal integrity are mission-critical.
FAQ
What is the operating voltage range for the 74ALVTH16244DLRG4?
The 74ALVTH16244DLRG4 operates over a VCC range of 2.3 V to 3.6 V, supporting both 2.5-V and 3.3-V nominal supply rails. It maintains full functionality-including 5-V I/O tolerance, bus-hold, and auto-3-state-across this entire range, enabling use in unregulated battery-powered systems down to 2.3 V.
Does the 74ALVTH16244DLRG4 support hot insertion?
Yes, the 74ALVTH16244DLRG4 supports hot insertion via two complementary features: Ioff circuitry disables outputs when VCC = 0 V to prevent back-current, and power-up 3-state holds all outputs in high-impedance until VCC rises above 1.2 V. These features are fully characterized per JESD78 and validated for industrial backplane applications.
What package type is used for the 74ALVTH16244DLRG4?
The 74ALVTH16244DLRG4 uses a 48-pin Plastic Shrink Small-Outline Package (SSOP, DL), 300-mil body width, 0.5-mm lead pitch, JEDEC MO-153 compliant. Pin 1 is marked by a beveled corner, and the package has a maximum height of 1.2 mm-compatible with standard SMT reflow profiles and automated optical inspection.
How does the auto-3-state function work on the 74ALVTH16244DLRG4?
The auto-3-state function on the 74ALVTH16244DLRG4 automatically places outputs in high-impedance whenever the output voltage exceeds VCC, regardless of OE state. This prevents bus contention during overvoltage faults, hot-swap transients, or inter-system mismatches-without requiring external monitoring or control logic.
Is bus-hold functionality enabled on all inputs of the 74ALVTH16244DLRG4?
Yes, bus-hold is integrated on all 16 data inputs (A1–A16) of the 74ALVTH16244DLRG4. Each input maintains its last-valid logic state with ±75 µA dynamic hold current at 3 V, eliminating the need for external 10-kΩ pull-up or pull-down resistors and simplifying PCB layout for unterminated or sparsely populated buses.
74ALVTH16244DLRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ALVTH
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- 32mA, 64mA
- Voltage - Supply:
- 2.3V ~ 2.7V, 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-SSOP
74ALVTH16244DLRG4 FAQ
1.How can I place an order for 74ALVTH16244DLRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ALVTH16244DLRG4 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 74ALVTH16244DLRG4 reliable?
The price and inventory of 74ALVTH16244DLRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVTH16244DLRG4 is usually 5 days.
3.What payment methods are accepted for 74ALVTH16244DLRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ALVTH16244DLRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ALVTH16244DLRG4?
74ALVTH16244DLRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ALVTH16244DLRG4 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 74ALVTH16244DLRG4?
For technical support, including 74ALVTH16244DLRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVTH16244DLRG4 requirements.
6.How does Aetrix verify that 74ALVTH16244DLRG4 is sourced from the original manufacturer or authorized distributors?
All 74ALVTH16244DLRG4 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 74ALVTH16244DLRG4 meets industry standards.
7.What is the process for return or replacement of 74ALVTH16244DLRG4?
All 74ALVTH16244DLRG4 units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVTH16244DLRG4, 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 74ALVTH16244DLRG4 part is unused and in its original packaging.
Return procedure for 74ALVTH16244DLRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74ALVTH16244DLRG4 Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
