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Texas Instruments SN74LVC162244DGGR
- Part No.:
- SN74LVC162244DGGR
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
SN74LVC162244DGGR.pdf
- Description:
- IC BUF NON-INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SN74LVC162244 from Texas Instruments is a 16-bit noninverting buffer/driver with 3-state outputs, designed for 2.7-V to 3.6-V VCC operation. It integrates four independent 4-bit buffers, each with active-low output-enable (OE) control, bus-hold circuitry on all data inputs, and on-die 26-Ω series output resistors. It is used in memory address buffering, clock distribution, and high-density bus interfacing where low ground bounce (<0.8 V) and controlled edge rates are critical.
For engineers reviewing the SN74LVC162244 datasheet, SN74LVC162244 pinout, SN74LVC162244 application, or SN74LVC162244 equivalent, key selection criteria include its 3.3-V compatible I/O, ±12-mA drive strength at 3 V, bus-hold functionality eliminating external biasing, and DGG package's 48-pin TSSOP footprint optimized for space-constrained PCB layouts.
Technical Context
This device belongs to TI's Widebus™ family and is fabricated using EPIC™ submicron CMOS technology. It implements true (noninverting) logic with symmetrical active-low OE inputs per 4-bit group - 1OE, 2OE, 3OE, and 4OE - enabling independent control of four output ports. Each output includes integrated 26-Ω series termination to suppress overshoot/undershoot without external components.
The SN74LVC162244 features bus-hold circuitry on all 16 A-inputs, maintaining valid logic levels on floating or unused inputs. Its absolute maximum ratings allow VCC up to 4.6 V and input/output voltage ranges from –0.5 V to VCC + 0.5 V, supporting mixed-voltage interface scenarios while maintaining latch-up immunity (>250 mA per JESD-17).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - ensures compatibility with 3.3-V systems and tolerance for supply variation in industrial environments. |
| IOL/IOH | ±12 mA at VCC = 3 V - supports direct driving of multiple LVC/LVT inputs or moderate capacitive loads without fanout buffers. |
| tpd | 1.5 ns to 7 ns (VCC = 3.3 V) - enables high-speed address/data buffering in memory subsystems with tight timing budgets. |
| Bus-Hold Current | ±75 µA at VI = 2 V - actively holds floating inputs at valid logic levels, removing need for external pullup/pulldown resistors. |
| Output Series Resistor | 26 Ω (typical) - reduces signal reflections and EMI by damping transmission-line effects on PCB traces. |
| VOLP/VOHV | <0.8 V / >2 V at VCC = 3.3 V - minimizes ground bounce and output undershoot during switching, improving signal integrity. |
| Operating Temperature | –40°C to +85°C - qualified for extended temperature range use in industrial and automotive under-hood applications. |
Pinout & Package
SN74LVC162244 is packaged in a 48-pin Thin Shrink Small-Outline (DGG) package - 12.5 mm × 7.5 mm × 1.2 mm body, 0.5-mm lead pitch - suitable for automated SMT assembly and high-density routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE | Active-low output-enable control | Individually disables corresponding 4-bit output group (Y1–Y4) into high-impedance state; must be pulled high via resistor during power-up for safe Z-state initialization. |
| 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | Data inputs | All 16 inputs feature bus-hold circuitry; no external bias required even when left unconnected in partial-bus configurations. |
| 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | True (noninverting) buffered outputs | Each output includes 26-Ω series resistor; sinks up to 12 mA or sources up to –12 mA at VCC = 3 V. |
| VCC (Pins 7, 18, 31, 42) | Power supply | Four distributed VCC pins reduce supply inductance and improve noise immunity across the wide 16-bit bus. |
| GND (Pins 4, 10, 15, 21, 28, 34, 39, 45) | Ground reference | Eight GND pins provide low-inductance return paths, critical for minimizing simultaneous switching noise in multi-bit drivers. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 26-Ω output series resistors | Eliminates need for 16 discrete external termination resistors, reducing BOM count, PCB area, and layout complexity. |
| Bus-hold on all 16 data inputs | Maintains stable logic states on unterminated or floating inputs, preventing metastability and system lockup in hot-plug or partial-bus scenarios. |
| Low ground bounce (VOLP < 0.8 V) | Reduces noise coupling into adjacent signals and power rails, enabling reliable operation in mixed-signal or RF-sensitive systems. |
| Wide operating temperature range | –40°C to +85°C rating supports deployment in industrial automation, telecom infrastructure, and automotive control modules. |
| EPIC™ submicron CMOS process | Delivers high speed with low static current (20 µA typical ICC), enabling energy-efficient buffering in always-on subsystems. |
Applications
| Memory Address Buffering | High-Density Bus Transceiver |
|---|---|
|
Use Scenario: Driving 16-bit address lines from a microcontroller to multiple SRAM or Flash devices on a shared bus. IC Role / Device Role / Timing Role: Noninverting 3-state buffer providing level-shifted, slew-controlled, and noise-immune address propagation with independent group enable. Use Value: Enables clean, glitch-free address transitions at up to 100 MHz with built-in termination and bus-hold - eliminating external resistors and pullups. |
Use Scenario: Isolating and driving bidirectional data buses between FPGA and peripheral ASICs in modular embedded systems. IC Role / Device Role / Timing Role: Directionally agnostic 16-bit driver with per-group OE control, allowing dynamic partitioning of bus segments without contention. Use Value: Supports flexible bus segmentation and hot-swap readiness via bus-hold and fast enable/disable times (ten/tdis ≤ 10 ns at 2.7 V). |
| Clock Distribution Network | Industrial I/O Expansion Interface |
|
Use Scenario: Fan-out of a single system clock to multiple synchronous peripherals requiring matched skew and low jitter. IC Role / Device Role / Timing Role: Low-skew, low-overshoot 16-bit buffer delivering synchronized clock copies with controlled edge rates. Use Value: Reduces clock signal degradation across long traces via on-die 26-Ω resistors and tight tpd matching (≤0.5 ns variation across outputs). |
Use Scenario: Expanding GPIO count of a PLC controller to drive 16 discrete sensors or actuators with robust noise immunity. IC Role / Device Role / Timing Role: Industrial-grade buffer providing ESD-hardened (2 kV HBM), latch-up-resistant (250 mA), and wide-temp I/O interfacing. Use Value: Withstands harsh factory-floor EMI and voltage transients while maintaining valid logic levels on unterminated sensor inputs via bus-hold. |
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 |
|---|---|---|---|
| SN74ALVC162244DGGR | Lower VCC range (1.65 V–3.6 V); higher speed (tpd down to 1.3 ns); identical pinout and bus-hold. | Better suited for mixed-voltage 1.8-V/3.3-V systems; not recommended if only 2.7–3.6-V operation is required and cost sensitivity is high. | Select SN74ALVC162244DGGR only when 1.8-V core logic coexists with 3.3-V I/O; otherwise, SN74LVC162244 offers optimal cost/performance balance. |
| 74LVC162244PW,118 | NXP variant in TSSOP-48 (same DGG footprint); identical electrical specs but different thermal resistance (RθJA = 65°C/W vs TI's 70°C/W). | Drop-in replacement in layout; minor thermal margin difference may affect sustained high-current operation in sealed enclosures. | Acceptable for most board-level replacements; verify junction temperature rise under worst-case 12-mA-per-output loading if ambient exceeds 70°C. |
Compared with SN74ALVC162244DGGR and 74LVC162244PW,118, the SN74LVC162244 provides the most balanced trade-off of industrial temperature support, proven reliability in memory and clock buffering, and cost efficiency for 3.3-V-only designs - without over-specifying voltage range or thermal performance.
Availability
SN74LVC162244 is available at Aetrix Electronics and suitable for memory address buffering, high-density bus transceivers, clock distribution networks, and industrial I/O expansion interfaces requiring stable component supply across production lifecycles.
Supply support for SN74LVC162244 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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The SN74LVC162244 belongs to TI's Widebus™ family of high-density bus-interface ICs, engineered specifically to increase packing density and signal integrity in memory subsystems, clock trees, and backplane interconnects.
FAQ
What is the function of the bus-hold circuitry in the SN74LVC162244?
The bus-hold circuitry in the SN74LVC162244 actively maintains a valid logic state on each of its 16 data inputs when left floating or unconnected. It draws ±75 µA at VI = 2 V to hold inputs at their last valid level, eliminating the need for external pullup or pulldown resistors in partial-bus or hot-swap configurations. This feature is integral to every A-input pin of the SN74LVC162244 and operates across the full –40°C to +85°C temperature range.
Can the SN74LVC162244 operate at 2.5 V?
No, the SN74LVC162244 is not characterized or guaranteed for operation at 2.5 V. Its recommended operating VCC range is strictly 2.7 V to 3.6 V per the datasheet. At 2.5 V, parameters including VOH, VOL, tpd, and bus-hold functionality fall outside specification limits. For 2.5-V systems, consider the SN74ALVC162244, which supports 1.65 V–3.6 V operation and shares the same DGG package and pinout as the SN74LVC162244.
How many output-enable (OE) inputs does the SN74LVC162244 have, and how are they assigned?
The SN74LVC162244 has four active-low output-enable inputs: 1OE (Pin 1), 2OE (Pin 48), 3OE (Pin 25), and 4OE (Pin 24). Each controls one 4-bit output group - 1OE enables Y1–Y4, 2OE enables Y5–Y8, 3OE enables Y9–Y12, and 4OE enables Y13–Y16. This grouping allows independent 3-state control of four distinct bus segments, a key architectural feature of the SN74LVC162244.
What is the purpose of the 26-Ω series resistors on the SN74LVC162244 outputs?
The 26-Ω series resistors integrated into each output of the SN74LVC162244 serve to damp signal reflections on PCB traces, reducing overshoot and undershoot during fast edge transitions. They eliminate the need for 16 discrete external series termination resistors, simplifying layout and lowering BOM cost. This design directly contributes to the SN74LVC162244's specified VOHV > 2 V and VOLP < 0.8 V at VCC = 3.3 V.
Is the SN74LVC162244 pin-compatible with other 16-bit LVC buffers in TSSOP-48 packages?
Yes, the SN74LVC162244 is pin-compatible with the SN74ALVC162244DGGR and NXP's 74LVC162244PW,118 in the DGG (TSSOP-48) package. All three share identical pin assignments for VCC, GND, A-inputs, Y-outputs, and OE controls. However, voltage range and thermal characteristics differ - the SN74LVC162244 is optimized for 2.7–3.6-V operation, while the ALVC variant extends down to 1.65 V.
SN74LVC162244DGGR 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:
- 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:
- 12mA, 12mA
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
SN74LVC162244DGGR FAQ
1.How can I place an order for SN74LVC162244DGGR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC162244DGGR 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 SN74LVC162244DGGR reliable?
The price and inventory of SN74LVC162244DGGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC162244DGGR is usually 5 days.
3.What payment methods are accepted for SN74LVC162244DGGR?
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4.How is shipping managed for SN74LVC162244DGGR?
SN74LVC162244DGGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC162244DGGR 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 SN74LVC162244DGGR?
For technical support, including SN74LVC162244DGGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC162244DGGR requirements.
6.How does Aetrix verify that SN74LVC162244DGGR is sourced from the original manufacturer or authorized distributors?
All SN74LVC162244DGGR 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 SN74LVC162244DGGR meets industry standards.
7.What is the process for return or replacement of SN74LVC162244DGGR?
All SN74LVC162244DGGR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC162244DGGR, 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 SN74LVC162244DGGR part is unused and in its original packaging.
Return procedure for SN74LVC162244DGGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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