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Texas Instruments SN74LVCH16244ADGGR
- Part No.:
- SN74LVCH16244ADGGR
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
SN74LVCH16244ADGGR.pdf
- Description:
- IC BUF NON-INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,009
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Product details
Overview
SN74LVCH16244ADGGR from Texas Instruments is a 16-bit noninverting 3-state buffer/driver with four independent 4-bit sections, operating from 1.65 V to 3.6 V, supporting 5.5-V-tolerant inputs and delivering ≤4.1 ns propagation delay at 3.3 V. It enables bus isolation in memory address, clock, and data bus applications for servers and network switches.
For engineers reviewing the SN74LVCH16244ADGGR datasheet, SN74LVCH16244ADGGR pinout, SN74LVCH16244ADGGR application, or SN74LVCH16244ADGGR equivalent, key selection criteria include Ioff-enabled live insertion support, bus-hold on all inputs eliminating external resistors, mixed-voltage (3.3 V/5 V) signal translation capability, and TSSOP-48 package thermal performance (RθJA = 64.3°C/W).
Technical Context
The SN74LVCH16244ADGGR implements four independent 4-bit noninverting buffers, each controlled by an active-low output-enable (OE) input. Its CMOS design supports partial-power-down operation via Ioff, preventing back-drive current when VCC = 0 V.
All 16 inputs feature integrated bus-hold circuitry, maintaining valid logic states without external pullup/pulldown resistors. Inputs tolerate up to 5.5 V regardless of VCC (1.65–3.6 V), enabling robust level-shifting between 3.3-V system logic and 5-V peripherals.
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 systems. |
| Input Voltage Tolerance | Up to 5.5 V - Allows direct interfacing with 5-V legacy devices without external level shifters. |
| Max Propagation Delay | 4.1 ns at VCC = 3.3 V - Supports high-speed bus buffering in DDR memory and PCIe clock distribution paths. |
| Ioff Support | Yes - Permits safe live insertion and hot-swap in backplane and modular server designs. |
| Bus-Hold Circuitry | On all 16 inputs - Eliminates need for external biasing, reducing BOM count and PCB footprint. |
| Output Drive | ±24 mA at VCC = 3 V - Sufficient to drive 50-pF loads with fast edge rates while maintaining signal integrity. |
| ESD Rating | 2000-V HBM - Meets industrial-grade reliability requirements per JESD22-A114. |
Pinout & Package
TSSOP-48 (DGG) package: 12.50 mm × 6.10 mm body size, 0.5-mm lead pitch, RoHS-compliant NIPDAU finish, MSL Level-1 (260°C peak reflow), –40°C to +125°C operating range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 24, 25, 48 | 1OE, 4OE, 3OE, 2OE | Active-low output enable for Groups 1–4 - Independently isolates 4-bit segments of the 16-bit bus. |
| 2–6, 8–12, 13–17, 19–23 | 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | True buffered outputs - Provide 3-state drive with symmetrical VOH/VOL and low ground bounce (<0.8 V). |
| 43–47, 37–41, 32–36, 26–30 | 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | 5.5-V-tolerant inputs with bus-hold - Accept 3.3-V or 5-V signals; retain last-valid state when floating. |
| 4, 10, 15, 21, 28, 34, 39, 45 | GND | Eight ground connections - Minimize ground bounce and improve noise immunity in high-speed switching. |
| 7, 18, 31, 42 | VCC | Four power pins - Reduce IR drop and supply impedance for stable operation across all 16 channels. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode signal operation | 5-V input compatibility with 3.3-V VCC enables seamless integration into heterogeneous voltage-domain systems. |
| Live insertion support | Ioff limits current flow during partial power-down, protecting backplane and hot-swap controller circuits. |
| Bus-hold on all inputs | Eliminates 16 external pullup/pulldown resistors, reducing component count and layout complexity. |
| Low ground bounce | VOLP < 0.8 V at VCC = 3.3 V ensures clean logic thresholds and reduces crosstalk in dense PCB layouts. |
| High noise immunity | VOHV > 2 V at VCC = 3.3 V suppresses false triggering from transient overshoot on shared buses. |
Applications
| Server Memory Subsystem | Industrial PLC Backplane |
|---|---|
|
Use Scenario: Buffering address and control lines between CPU and DDR3/DDR4 memory modules in 1U rack servers. IC Role / Device Role / Timing Role: 16-bit noninverting 3-state buffer providing isolated, low-skew signal routing with Ioff protection during memory hot-plug events. Use Value: Enables reliable memory expansion without redesigning power sequencing or adding discrete level shifters or bus terminators. |
Use Scenario: Interfacing field I/O modules (4–20 mA, RS-485) to central controller over modular backplane with mixed 3.3-V and 5-V logic domains. IC Role / Device Role / Timing Role: Four independent 4-bit buffers translating and isolating sensor/actuator command signals while maintaining timing integrity across voltage boundaries. Use Value: Reduces inter-module wiring complexity and eliminates external biasing components, accelerating PLC module certification. |
| Network Switch ASIC Interface | Automotive Infotainment Head Unit |
|
Use Scenario: Driving high-capacitance control buses (e.g., MDIO, I²C expansion) from switch ASIC to PHY transceivers and management controllers. IC Role / Device Role / Timing Role: Low-propagation-delay (≤4.1 ns) buffer ensuring setup/hold compliance across multi-drop bus topologies with 30-pF load. Use Value: Guarantees deterministic timing margins for IEEE 802.3 compliance without adding FPGA logic or delaying ASIC firmware bring-up. |
Use Scenario: Isolating display interface signals (LVDS timing, backlight PWM) between infotainment SoC and display driver ICs in automotive cockpit systems. IC Role / Device Role / Timing Role: 3-state buffer with bus-hold preventing floating inputs during SoC reset or display sleep mode transitions. Use Value: Prevents unintended display flicker or backlight activation during power-state transitions, meeting ISO 26262 ASIL-B functional safety requirements. |
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 Ioff and bus-hold; max VCC = 3.6 V but inputs not 5.5-V tolerant. | Suitable only in fully 3.3-V systems with externally biased inputs and no hot-swap requirement. | Choose only if cost sensitivity outweighs live-insertion and mixed-voltage needs. |
| 74ALVCH16244DL | Higher VCC max (3.6 V), same pinout, but lower drive (±12 mA) and no bus-hold. | Acceptable for low-speed industrial control where fanout and ESD margin are less critical. | Select when thermal budget is constrained and full 24-mA drive is unnecessary. |
Compared with SN74LVC16244ADGGR and 74ALVCH16244DL, the SN74LVCH16244ADGGR uniquely combines 5.5-V input tolerance, Ioff, and bus-hold in a TSSOP-48 package-enabling single-component solutions for mixed-voltage, hot-pluggable, and resistor-free designs.
Availability
SN74LVCH16244ADGGR is available at Aetrix Electronics and suitable for servers, network switches, and industrial PLCs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for SN74LVCH16244ADGGR 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 and bus technologies.
The SN74LVCH16244ADGGR belongs to TI's Widebus™ family, designed specifically to enhance density and performance of 3-state memory address drivers, clock drivers, and bus-oriented receivers/transmitters in space-constrained systems.
FAQ
What is the maximum input voltage the SN74LVCH16244ADGGR can tolerate?
The SN74LVCH16244ADGGR accepts input voltages up to 5.5 V across its entire specified VCC range (1.65 V to 3.6 V). This overvoltage tolerance allows direct connection to 5-V logic sources without level-shifting circuitry, making the SN74LVCH16244ADGGR ideal for mixed-voltage system interfaces where 3.3-V controllers communicate with legacy 5-V peripherals.
Does the SN74LVCH16244ADGGR support live insertion in powered-backplane systems?
Yes, the SN74LVCH16244ADGGR supports live insertion through its Ioff feature, which disables output leakage paths when VCC = 0 V. This prevents damaging back-current flow during hot-plug events in server or telecom backplanes. The SN74LVCH16244ADGGR maintains this protection across its full –40°C to +125°C operating temperature range.
How does bus-hold functionality work on the SN74LVCH16244ADGGR?
The SN74LVCH16244ADGGR integrates bus-hold circuitry on all 16 inputs, actively retaining the last-valid logic state when inputs float. This eliminates the need for external pullup or pulldown resistors, reducing BOM cost and PCB area. Bus-hold current is ±45 µA at 3 V, ensuring stable retention without interfering with normal signal transitions.
What is the typical propagation delay of the SN74LVCH16244ADGGR at 3.3 V?
The SN74LVCH16244ADGGR achieves a maximum propagation delay (tpd) of 4.1 ns at VCC = 3.3 V, TA = 25°C, under standard load conditions (CL = 50 pF). This low latency supports high-speed applications such as DDR memory address buffering and clock distribution, where timing predictability is critical to system-level synchronization.
Which package variants are available for the SN74LVCH16244ADGGR?
The SN74LVCH16244ADGGR is specifically the TSSOP-48 (DGG) variant. Other orderable versions include TVSOP-48 (DGV) and SSOP-48 (DL), all sharing identical electrical specifications and pinout. All variants are RoHS-compliant, rated for –40°C to +125°C, and feature NIPDAU lead finish with MSL Level-1 moisture sensitivity rating.
SN74LVCH16244ADGGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVCH
- 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
SN74LVCH16244ADGGR FAQ
1.How can I place an order for SN74LVCH16244ADGGR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVCH16244ADGGR 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 SN74LVCH16244ADGGR reliable?
The price and inventory of SN74LVCH16244ADGGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVCH16244ADGGR is usually 5 days.
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Once your SN74LVCH16244ADGGR 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 SN74LVCH16244ADGGR?
For technical support, including SN74LVCH16244ADGGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVCH16244ADGGR requirements.
6.How does Aetrix verify that SN74LVCH16244ADGGR is sourced from the original manufacturer or authorized distributors?
All SN74LVCH16244ADGGR 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 SN74LVCH16244ADGGR meets industry standards.
7.What is the process for return or replacement of SN74LVCH16244ADGGR?
All SN74LVCH16244ADGGR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVCH16244ADGGR, 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 SN74LVCH16244ADGGR part is unused and in its original packaging.
Return procedure for SN74LVCH16244ADGGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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