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Texas Instruments SN74LVCH162244AVR
- Part No.:
- SN74LVCH162244AVR
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74LVCH162244AVR.pdf
- Description:
- IC BUF NON-INVERT 3.6V 48TVSOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,021
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Product details
Overview
SN74LVCH162244AVR from Texas Instruments is a 16-bit noninverting buffer/driver with 3-state outputs, designed for 1.65-V to 3.6-V VCC operation. It features four independent 4-bit sections, each with active-low output-enable (OE) control, 5.5-V-tolerant inputs, bus-hold circuitry, and integrated 26-Ω series output resistors-enabling direct interface between 3.3-V logic and 5-V systems in server memory address buffering.
For engineers reviewing the SN74LVCH162244AVR datasheet, SN74LVCH162244AVR pinout, SN74LVCH162244AVR application, or SN74LVCH162244AVR equivalent, key selection criteria include Ioff-enabled live insertion support, ±12 mA output drive at 3.3 V, 4.4 ns max propagation delay, 3-state output isolation timing, and TVSOP-48 package compatibility with high-density PCB layouts.
Technical Context
This device implements true (noninverting) buffering across 16 channels, partitioned into four independent 4-bit groups (1Y–4Y), each controlled by its own active-low OE input (1OE–4OE). Each channel accepts input voltages up to 5.5 V regardless of VCC (1.65–3.6 V), enabling mixed-voltage translation without external level shifters.
It integrates bus-hold circuitry on all A-inputs to maintain valid logic states on undriven lines, eliminating external pullup/pulldown resistors. The Ioff feature disables outputs and blocks current backflow when VCC = 0 V, supporting partial-power-down and hot-plug operation in modular systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - supports single-supply operation across low-voltage logic families including 1.8-V, 2.5-V, and 3.3-V systems. |
| Input Voltage Tolerance | Up to 5.5 V - enables direct connection to 5-V legacy peripherals or microcontrollers without external voltage translation. |
| Max Propagation Delay | 4.4 ns at VCC = 3.3 V - ensures timing-critical data path integrity in high-speed address/data buffering applications. |
| Output Drive Strength | ±12 mA at VCC = 3.3 V - sufficient to drive moderate capacitive loads (e.g., 30 pF) while maintaining signal integrity. |
| Ioff Support | Active at VCC = 0 V - prevents damaging back-current during hot-swap or power sequencing in modular backplanes. |
| Bus-Hold Current | ±75 μA at VCC = 3 V - actively maintains stable logic levels on floating inputs, removing need for external biasing components. |
| ESD Protection | 2000-V HBM, 1000-V CDM - exceeds JEDEC JESD22-A114 and JESD22-C101 requirements for robust handling in manufacturing. |
Pinout & Package
SN74LVCH162244AVR is packaged in a 48-pin TVSOP (DGV) with nominal body size 9.70 mm × 4.40 mm, optimized for space-constrained industrial and telecom PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE–4OE | Active-low output enable | Individually disables corresponding 4-bit Y-output group; tied to VCC via pullup for power-up high-impedance safety. |
| 1A1–4A4 | Buffer input | 16 total CMOS inputs with 5.5-V tolerance and integrated bus-hold; no external bias required. |
| 1Y1–4Y4 | 3-state noninverting output | 16 true outputs with built-in 26-Ω series resistance - eliminates need for external termination resistors. |
| VCC (Pins 7, 18, 31, 42) | Power supply | Four dedicated VCC pins reduce supply impedance and improve noise immunity across wide bus operation. |
| GND (Pins 4, 10, 15, 21, 28, 34, 39, 45) | Ground reference | Eight GND pins provide low-inductance return paths, critical for minimizing ground bounce (VOLP < 0.8 V @ 3.3 V). |
Key Features
| Feature | Design Value |
|---|---|
| Wide VCC range | Operates from 1.65 V to 3.6 V - compatible with battery-powered, low-power, and mixed-supply embedded systems. |
| Mixed-mode signal operation | 5.5-V-tolerant inputs with 3.3-V VCC - enables seamless interfacing between legacy 5-V peripherals and modern 3.3-V controllers. |
| Integrated output series resistance | 26-Ω on-chip termination - suppresses signal reflections and reduces EMI without requiring discrete resistors on PCB. |
| Live-insertion support | Ioff functionality - blocks current flow when VCC = 0 V, allowing safe board replacement in powered-backplane systems. |
| Bus-hold inputs | Self-biasing on all A-inputs - prevents floating nodes and undefined logic states in unterminated or sparsely loaded buses. |
Applications
| Server Memory Address Buffering | Industrial PLC I/O Expansion |
|---|---|
|
Use Scenario: Driving parallel address lines from a 3.3-V CPU to multiple DDR SDRAM modules operating at 2.5-V or 1.8-V VDDQ, where signal integrity and voltage translation are critical. IC Role / Device Role / Timing Role: Noninverting 16-bit buffer with per-group OE control isolates memory banks during refresh cycles and translates CPU address signals to memory controller inputs. Use Value: Eliminates external level shifters and termination resistors, reducing BOM count and layout area while meeting tPD ≤ 5 ns timing budgets. |
Use Scenario: Interfacing a 3.3-V FPGA-based main controller to legacy 5-V discrete I/O modules (relays, sensors, indicators) in factory automation cabinets. IC Role / Device Role / Timing Role: Bidirectional voltage translator and bus driver that conditions FPGA outputs for 5-V TTL-compatible inputs while accepting feedback signals up to 5.5 V. Use Value: Enables direct connection without external translators; Ioff protects FPGA I/O during module hot-swap maintenance events. |
| Network Switch Backplane Interface | Automotive Infotainment Display Bridge |
|
Use Scenario: Isolating and driving control/address signals between a 3.3-V switch ASIC and multiple line-card controllers in a modular chassis system. IC Role / Device Role / Timing Role: 3-state buffer with independent OE per 4-bit group allows dynamic routing of configuration commands to specific line cards without bus contention. Use Value: Four OE pins enable selective activation, reducing simultaneous switching noise (SSN); bus-hold prevents glitches during card insertion/removal. |
Use Scenario: Buffering video timing and control signals (HSYNC, VSYNC, DE, clock enable) from a 3.3-V SoC to a 5-V display timing controller in automotive head units. IC Role / Device Role / Timing Role: Low-skew, noninverting repeater ensuring setup/hold margins are met across temperature (–40°C to 125°C) with minimal added jitter. Use Value: 4.4 ns max tPD at 3.3 V guarantees sub-cycle timing margin; 125°C rated operation meets AEC-Q100 Grade 2 thermal requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit buffer/driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16244ADGGR | Lacks bus-hold and Ioff; 5-V tolerant inputs only up to VCC + 0.5 V (not 5.5 V absolute). | Suitable for fixed 3.3-V-only systems without hot-swap or floating-input concerns. | Choose when cost sensitivity outweighs mixed-voltage flexibility and robustness requirements. |
| 74ALVC162244PW | Higher ICC (20 μA typical vs. 10 μA), no bus-hold, and narrower VCC range (1.65–3.6 V same, but less noise margin). | Used in legacy industrial designs where ALVC speed-grade compatibility is mandated. | Select only if backward compatibility with existing ALVC-based schematics is required. |
Compared with SN74LVC16244ADGGR and 74ALVC162244PW, SN74LVCH162244AVR uniquely combines 5.5-V input tolerance, Ioff, bus-hold, and 26-Ω output termination in a single 48-pin TVSOP package-making it optimal for next-generation mixed-voltage, hot-pluggable, and high-reliability embedded systems.
Availability
SN74LVCH162244AVR is available at Aetrix Electronics and suitable for server memory subsystems, industrial PLC I/O expansion, network switch backplanes, and automotive infotainment display bridges requiring stable component supply across extended temperature and mixed-voltage environments.
Supply support for SN74LVCH162244AVR 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 SN74LVCH162244AVR belongs to TI's Widebus™ family of advanced logic devices, engineered specifically to enhance density and performance in 3-state memory address drivers, clock distribution networks, and bus-oriented receivers/transmitters.
FAQ
What is the maximum input voltage rating for SN74LVCH162244AVR?
The SN74LVCH162244AVR supports input voltages up to 5.5 V across its entire operating VCC range (1.65 V to 3.6 V), enabling direct interfacing with 5-V logic without external level-shifting circuitry. This specification is explicitly confirmed in Section 7.1 (Absolute Maximum Ratings) and Section 9.3 (Feature Description) of the official datasheet SCAS545L.
Does SN74LVCH162244AVR support hot-plug or live-insertion applications?
Yes, SN74LVCH162244AVR supports live insertion via its Ioff feature, which disables outputs and blocks current backflow when VCC = 0 V. This capability is validated in Section 3 (Description) and Section 9.3 of the datasheet, making SN74LVCH162244AVR suitable for modular backplane systems requiring safe board replacement under power.
What package type is used for SN74LVCH162244AVR?
SN74LVCH162244AVR uses the TVSOP-48 (DGV) package with nominal dimensions 9.70 mm × 4.40 mm. This information is confirmed in the Device Information table (Section 3), Pin Configuration diagram (Section 6), and Package Option Addendum (page 14) of the official TI datasheet SCAS545L.
How does the bus-hold feature function on SN74LVCH162244AVR?
The bus-hold circuitry on SN74LVCH162244AVR actively maintains valid logic states on all A-inputs when undriven, eliminating the need for external pullup or pulldown resistors. Per Section 3 and Section 9.1 of the datasheet, this feature draws ±75 μA at VCC = 3 V and is enabled by default-no configuration required.
What is the typical propagation delay of SN74LVCH162244AVR at 3.3 V?
The typical propagation delay (tpd) of SN74LVCH162244AVR is 3.5 ns, with a maximum of 4.4 ns at VCC = 3.3 V, as specified in Section 7.6 (Switching Characteristics) of the datasheet SCAS545L. This value applies to the A-to-Y path under standard load conditions (CL = 50 pF, ΔV = ±0.3 V).
SN74LVCH162244AVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVCH
- Package/Case:
- 48-TFSOP (0.173", 4.40mm 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:
- 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-TVSOP
SN74LVCH162244AVR FAQ
1.How can I place an order for SN74LVCH162244AVR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVCH162244AVR 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 SN74LVCH162244AVR reliable?
The price and inventory of SN74LVCH162244AVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVCH162244AVR is usually 5 days.
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Once your SN74LVCH162244AVR 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 SN74LVCH162244AVR?
For technical support, including SN74LVCH162244AVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVCH162244AVR requirements.
6.How does Aetrix verify that SN74LVCH162244AVR is sourced from the original manufacturer or authorized distributors?
All SN74LVCH162244AVR 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 SN74LVCH162244AVR meets industry standards.
7.What is the process for return or replacement of SN74LVCH162244AVR?
All SN74LVCH162244AVR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVCH162244AVR, 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 SN74LVCH162244AVR part is unused and in its original packaging.
Return procedure for SN74LVCH162244AVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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