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Texas Instruments SN74LVCH162244ADL
- Part No.:
- SN74LVCH162244ADL
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVCH162244ADL.pdf
- Description:
- IC BUF NON-INVERT 3.6V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:415
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Product details
Overview
SN74LVCH162244ADL 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, and integrated bus-hold circuitry-enabling reliable signal buffering in mixed-voltage server backplanes and industrial I/O interfaces.
For engineers reviewing the SN74LVCH162244ADL datasheet, SN74LVCH162244ADL pinout, SN74LVCH162244ADL application, or SN74LVCH162244ADL equivalent, key selection criteria include its 4.4 ns max propagation delay at 3.3 V, Ioff support for live insertion, 26-Ω on-chip series output termination, and compatibility with 3.3-V/5-V bidirectional voltage translation in memory address and clock distribution paths.
Technical Context
This device implements true (noninverting) logic buffering across 16 channels, partitioned into four isolated 4-bit groups, each controlled by a dedicated active-low OE input. Its CMOS design supports partial-power-down via Ioff, which disables outputs and blocks current backflow when VCC = 0 V.
The SN74LVCH162244ADL integrates bus-hold circuitry on all data inputs-eliminating external pullup/pulldown resistors-and features 26-Ω series output impedance, enabling clean signal integrity without external termination. Input tolerance up to 5.5 V allows direct interfacing with 5-V logic while operating from a 3.3-V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - Enables use in low-voltage embedded systems and mixed-supply domains. |
| Max Propagation Delay | 4.4 ns at VCC = 3.3 V - Supports high-speed data routing in memory and peripheral buses. |
| Input Voltage Tolerance | Up to 5.5 V - Allows safe interfacing with legacy 5-V logic without level-shifting components. |
| Output Termination | 26-Ω series resistance - Reduces signal reflections and eliminates need for external series resistors. |
| Ioff Support | Active at VCC = 0 V - Prevents damaging back-drive current during hot-plug or partial power-down. |
| Bus-Hold Circuitry | On all A-inputs - Maintains valid logic state on floating or undriven inputs, removing external biasing. |
| ESD Protection | 2000-V HBM, 1000-V CDM - Meets industrial-grade robustness requirements per JESD22. |
Pinout & Package
SN74LVCH162244ADL uses a 48-pin SSOP (Shrink Small Outline Package) with nominal body size 15.88 mm × 7.49 mm. The package includes 10 ground pins (pins 4, 10, 15, 21, 28, 34, 39, 45, and two additional GNDs), 4 VCC pins (pins 7, 18, 31, 42), and symmetrically arranged input/output groups per section.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE | Active-low output enable | Individually controls 4-bit output group; asserted low enables Y outputs, high places them in high-Z. |
| 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | Data inputs | Noninverting inputs for respective 4-bit sections; feature bus-hold and 5.5-V tolerance. |
| 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | Buffered outputs | True outputs with 26-Ω series impedance; drive loads directly without external termination. |
| VCC (pins 7, 18, 31, 42) | Power supply | Four distributed VCC connections reduce supply noise and improve decoupling effectiveness. |
| GND (pins 4, 10, 15, 21, 28, 34, 39, 45) | Ground reference | Eight GND pins provide low-inductance return paths and minimize ground bounce (VOLP & VOHV). |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode signal operation | 5-V-tolerant inputs with 3.3-V VCC enable seamless 3.3-V/5-V system interfacing without translators. |
| Integrated 26-Ω output series resistance | Eliminates need for discrete series termination resistors, saving PCB area and BOM cost. |
| Bus-hold on all inputs | Prevents floating inputs from drifting to indeterminate states-no external pullup/pulldown required. |
| Ioff partial-power-down protection | Blocks current flow between powered and unpowered sections during hot-swap or power sequencing. |
| Low ground bounce (VOLP & VOHV) | Typical VOLP <0.8 V and VOHV >2 V at VCC = 3.3 V ensures stable logic thresholds under switching load. |
Applications
| Server Memory Address Buffering | Industrial PLC I/O Expansion |
|---|---|
|
Use Scenario: Driving parallel memory address lines from a 3.3-V controller to multiple DDR SDRAM modules operating at 3.3-V or 5-V levels. IC Role / Device Role / Timing Role: Noninverting 16-bit buffer with per-section OE control isolates address segments during bank switching. Use Value: 4.4 ns tpd ensures timing margin compliance; 5.5-V input tolerance accommodates legacy 5-V memory subsystems. |
Use Scenario: Interfacing microcontroller GPIOs to 24-V industrial sensors and actuators via optocoupler-isolated digital I/O cards. IC Role / Device Role / Timing Role: Level-translating buffer stage that accepts 5-V sensor signals and drives 3.3-V MCU inputs with bus-hold stability. Use Value: Eliminates external pullups on sensor lines; Ioff prevents backfeed during module hot-swap maintenance. |
| Network Switch Control Plane | Automotive Infotainment Display Interface |
|
Use Scenario: Buffering configuration and status signals between 3.3-V switch ASIC and 5-V management microcontrollers in Layer-3 switches. IC Role / Device Role / Timing Role: Bidirectional voltage translator and noise-isolating driver for control bus signals with independent section enable. Use Value: 26-Ω output impedance suppresses EMI on long PCB traces; 125°C max operating temperature supports fanless chassis designs. |
Use Scenario: Driving parallel RGB interface signals from an automotive-grade SoC to a TFT display module requiring stable 3.3-V logic levels. IC Role / Device Role / Timing Role: High-density 16-bit buffer providing clean, terminated outputs for pixel clock and data lanes. Use Value: Low VOLP/VOHV minimizes timing jitter on critical display clocks; SSOP-48 fits constrained dashboard PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16244ADL | Lacks bus-hold and Ioff; 3.6-V max VCC only; no 5.5-V input tolerance. | Suitable only in fully 3.3-V systems with externally biased inputs and controlled power sequencing. | Choose when cost sensitivity outweighs robustness requirements and mixed-voltage operation is unnecessary. |
| SN74AVC162244DGGR | Supports 1.2-V to 3.6-V operation; higher speed (2.4 ns tpd); no bus-hold; different pinout. | Better for ultra-low-voltage SoC interconnects but requires external biasing and layout redesign. | Select only if migrating to sub-1.8-V domains and redesigning PCB layout for TSSOP-48 pin compatibility. |
Compared with SN74LVC16244ADL and SN74AVC162244DGGR, the SN74LVCH162244ADL uniquely combines 5.5-V input tolerance, bus-hold, Ioff, and 26-Ω output termination in a single SSOP-48 package-making it the only drop-in solution for legacy 5-V/3.3-V mixed-signal backplane buffering without layout changes.
Availability
SN74LVCH162244ADL is available at Aetrix Electronics and suitable for server memory buffering, industrial PLC I/O expansion, and network switch control plane applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for SN74LVCH162244ADL 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 and embedded processing technologies, with decades of expertise in logic interface solutions for enterprise and industrial markets.
The SN74LVCH162244ADL belongs to TI's Widebus™ family of high-density, low-voltage CMOS buffers-designed specifically to enhance performance and density in memory address drivers, clock distribution networks, and bus-oriented transceivers.
FAQ
What is the maximum operating temperature range for the SN74LVCH162244ADL?
The SN74LVCH162244ADL is rated for operation from –40°C to +125°C ambient temperature, meeting extended industrial and networking equipment requirements. This rating is validated per JEDEC JESD78 and confirmed in the Recommended Operating Conditions table of the official datasheet SCAS545L.
Does the SN74LVCH162244ADL require external pullup resistors on its inputs?
No, the SN74LVCH162244ADL includes active bus-hold circuitry on all A-inputs, which maintains a valid logic state on unused or undriven inputs-eliminating the need for external pullup or pulldown resistors. Using external resistors with bus-hold enabled is explicitly discouraged in the datasheet.
Can the SN74LVCH162244ADL be used in a 5-V system with a 3.3-V supply?
Yes, the SN74LVCH162244ADL supports mixed-mode operation: its inputs tolerate up to 5.5 V regardless of VCC, allowing direct connection to 5-V logic while powered from 3.3 V. Outputs swing rail-to-rail (0 V to VCC), so they remain compatible with 3.3-V receivers.
What is the purpose of the four separate OE pins on the SN74LVCH162244ADL?
The four active-low OE pins (1OE–4OE) independently control the 3-state output drivers for each 4-bit section. This enables selective isolation of bus segments-such as disabling one memory bank while accessing another-reducing contention and simplifying timing-critical control plane signaling in multi-module systems.
Is the SN74LVCH162244ADL pin-compatible with other 48-pin Widebus™ buffers?
No-while functionally similar to SN74LVC16244ADL and SN74AVC162244DGGR, the SN74LVCH162244ADL has a unique pinout optimized for SSOP-48 layout, including distributed VCC/GND placement and grouped A/Y/OE assignments. Direct replacement requires verification against the DL-package pin diagram in SCAS545L.
SN74LVCH162244ADL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVCH
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Bulk
- 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-SSOP
SN74LVCH162244ADL FAQ
1.How can I place an order for SN74LVCH162244ADL through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVCH162244ADL 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 SN74LVCH162244ADL reliable?
The price and inventory of SN74LVCH162244ADL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVCH162244ADL is usually 5 days.
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Once your SN74LVCH162244ADL 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 SN74LVCH162244ADL?
For technical support, including SN74LVCH162244ADL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVCH162244ADL requirements.
6.How does Aetrix verify that SN74LVCH162244ADL is sourced from the original manufacturer or authorized distributors?
All SN74LVCH162244ADL 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 SN74LVCH162244ADL meets industry standards.
7.What is the process for return or replacement of SN74LVCH162244ADL?
All SN74LVCH162244ADL units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVCH162244ADL, 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 SN74LVCH162244ADL part is unused and in its original packaging.
Return procedure for SN74LVCH162244ADL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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