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Texas Instruments SN74LVTH162240DGGR
- Part No.:
- SN74LVTH162240DGGR
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
SN74LVTH162240DGGR.pdf
- Description:
- IC BUFFER INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,633
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Product details
Overview
SN74LVTH162240 from Texas Instruments is a 3.3-V ABT 16-bit inverting buffer/driver with 3-state outputs, designed for low-voltage memory address, clock, and bus-oriented applications. It features four independent 4-bit sections, symmetrical active-low output-enable (OE) inputs, and integrated 22-Ω series output resistors to suppress overshoot/undershoot. It supports mixed-mode operation with 5-V-tolerant inputs while powered from 3.3-V VCC.
For engineers reviewing the SN74LVTH162240 datasheet, SN74LVTH162240 pinout, SN74LVTH162240 application, or SN74LVTH162240 equivalent, key selection criteria include its 3.3-V ABT process, bus-hold on all data inputs, Ioff-enabled hot insertion, distributed VCC/GND layout for noise reduction, and guaranteed operation down to 2.7 V VCC.
Technical Context
The SN74LVTH162240 implements a flow-through architecture with four independent 4-bit inverting buffer sections, each controlled by a dedicated active-low OE input (1OE–4OE). Its Advanced BiCMOS Technology (ABT) enables TTL-compatible drive strength (±12 mA) at 3.3-V supply while maintaining 5-V input tolerance.
Each output includes an integrated 22-Ω series resistor, eliminating external termination components. Bus-hold circuitry actively maintains valid logic levels on unused inputs, and Ioff functionality disables outputs during power-down to prevent backflow current - critical for live-insertion systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - supports unregulated battery operation and ensures stable function across industrial voltage variation. |
| Output Drive | ±12 mA - delivers TTL-level sourcing/sinking capability compatible with legacy 5-V logic loads. |
| Input Voltage Tolerance | Up to 5.5 V - enables direct interfacing with 5-V systems without level shifters. |
| Propagation Delay | tPLH/tPHL = 2.5 ns (typ) at VCC = 3.3 V - ensures high-speed timing integrity in clock distribution and address buffering. |
| Bus-Hold Current | ±750 µA max - actively retains input state without external pullup/pulldown resistors, reducing BOM count and board space. |
| Ioff Leakage | ±100 µA max at VCC = 0 - prevents damaging current flow during hot insertion or partial power-down. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded and communications equipment. |
Pinout & Package
TSSOP-48 (DGG) package: 12.6 mm × 6.2 mm × 1.2 mm body, 0.5-mm lead pitch, RoHS-compliant NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | Data Inputs (16 total) | Active-high inputs per 4-bit section; each group inverted at corresponding Y outputs. |
| 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | Inverting Outputs (16 total) | 3-state outputs with built-in 22-Ω series resistance; driven low/high or high-Z based on OE. |
| 1OE–4OE | Section Enable Controls | Active-low enables for each 4-bit buffer group; independent control enables flexible bus partitioning. |
| VCC (Pins 7, 15, 23, 31, 39, 47) | Power Supply | Distributed VCC pins minimize switching noise and improve power integrity across high-speed operation. |
| GND (Pins 4, 12, 20, 28, 36, 44) | Ground Reference | Distributed GND pins provide low-inductance return paths and reduce ground bounce (VOLP < 0.8 V). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 22-Ω Output Resistors | Eliminates need for external series termination, reducing PCB component count and layout complexity. |
| Bus-Hold on All Data Inputs | Maintains valid logic state on floating inputs without external biasing, improving system robustness in unterminated buses. |
| Ioff and Power-Up 3-State | Ensures outputs remain high-impedance during power sequencing, enabling safe hot-plug operation in modular backplanes. |
| Mixed-Mode Signal Operation | Accepts 5-V inputs while operating from 3.3-V VCC - simplifies interface between legacy and modern voltage domains. |
| Distributed VCC/GND Pin Layout | Reduces simultaneous switching noise and improves signal integrity in high-density, high-speed digital systems. |
Applications
| Memory Address Buffering | Industrial Backplane Interface |
|---|---|
|
Use Scenario: Driving address lines from a 3.3-V microcontroller to multiple 5-V SRAM or Flash devices in an industrial PLC. IC Role / Device Role / Timing Role: Inverting 16-bit address buffer with per-section OE control, providing level translation and noise-immune signal routing. Use Value: Eliminates discrete level shifters and pull-up networks while ensuring sub-5 ns propagation delay and bus-hold stability on unused address bits. |
Use Scenario: Interfacing a 3.3-V FPGA I/O bank to a 5-V legacy backplane in a modular test instrument rack. IC Role / Device Role / Timing Role: Hot-insertion-capable bus driver with Ioff protection and distributed power/ground pins for EMI-sensitive backplane signaling. Use Value: Enables live module replacement without system shutdown; integrated 22-Ω resistors suppress reflections on long parallel traces. |
| Clock Distribution Network | Legacy System Bus Extension |
|
Use Scenario: Fan-out and inversion of a 3.3-V system clock to multiple 5-V peripheral controllers in telecom baseband hardware. IC Role / Device Role / Timing Role: Low-skew inverting clock driver with matched tPLH/tPHL and minimized ground bounce (VOLP < 0.8 V). Use Value: Maintains tight skew across 16 outputs while supporting mixed-voltage clock tree design without external termination. |
Use Scenario: Extending a 16-bit ISA-style data bus from a 3.3-V host processor to legacy 5-V expansion cards in medical diagnostic equipment. IC Role / Device Role / Timing Role: Bidirectional-capable (via OE control) bus transceiver with 5-V-tolerant inputs and 3.3-V-compatible drive strength. Use Value: Provides seamless voltage-domain bridging with no external components, leveraging bus-hold to prevent floating bus states during card insertion/removal. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit inverting buffer/driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVT162240DGGR | LVT version lacks ABT process; no integrated 22-Ω resistors; higher static current; no bus-hold. | Requires external termination and pull-up resistors; unsuitable for floating-bus or hot-insertion use cases. | Select only if cost sensitivity outweighs need for bus-hold, Ioff, or built-in termination. |
| SN74AVC16T245DGGR | Non-inverting, dual-supply (1.2–3.6 V A-port / 1.2–3.6 V B-port); no 5-V tolerance; no bus-hold. | Designed for bidirectional voltage translation between two low-voltage domains, not 3.3-V-to-5-V interfacing. | Choose only for point-to-point LVDS or low-voltage bidirectional bus extension - not as a drop-in replacement. |
Compared with SN74LVT162240DGGR and SN74AVC16T245DGGR, the SN74LVTH162240 provides unique integration of 5-V-tolerant inputs, bus-hold, Ioff, and on-die 22-Ω termination - making it the only option among the three qualified for mixed-voltage hot-plug bus interfaces without supplemental components.
Availability
SN74LVTH162240 is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory subsystems, clock distribution networks, and legacy bus extension requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SN74LVTH162240 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 signal-path ICs.
The SN74LVTH162240 belongs to TI's Widebus™ family of advanced bus-interface devices, engineered specifically for high-density, low-noise 3.3-V system interconnect in industrial, telecom, and computing infrastructure.
FAQ
What is the maximum input voltage the SN74LVTH162240 can tolerate?
The SN74LVTH162240 supports input voltages up to 5.5 V while operating from a 3.3-V VCC supply. This 5-V tolerance allows direct connection to legacy 5-V logic families without external level-shifting circuitry, and is explicitly specified in the Recommended Operating Conditions table of the datasheet under "VI".
Does the SN74LVTH162240 support hot insertion?
Yes, the SN74LVTH162240 supports hot insertion via two complementary features: Ioff circuitry disables outputs when VCC = 0, preventing backflow current, and power-up 3-state ensures outputs remain high-impedance during power ramp-up. Both are verified per JESD78 and documented in the Functional Description section.
What is the purpose of the 22-Ω series resistors on SN74LVTH162240 outputs?
The SN74LVTH162240 integrates 22-Ω series resistors on all 16 outputs to dampen signal edge overshoot and undershoot caused by transmission-line effects. This eliminates the need for external series termination resistors, simplifying PCB layout and reducing BOM cost - confirmed in the Features list and Electrical Characteristics section.
How does bus-hold functionality work on the SN74LVTH162240?
The SN74LVTH162240 includes active bus-hold circuitry on all 16 data inputs, which applies a weak feedback current (±750 µA max) to retain the last-valid logic state when inputs float. This avoids undefined logic levels and removes the need for external pullup/pulldown resistors - detailed in the Functional Description and Electrical Characteristics tables.
What package options are available for the SN74LVTH162240?
The SN74LVTH162240 is offered in two surface-mount packages: the 48-pin Thin Shrink Small-Outline Package (TSSOP-DGG) and the 48-pin Shrink Small-Outline Package (SSOP-DL). The specific part SN74LVTH162240DGGR uses the DGG package, as confirmed in the Ordering Information and Package Outline documentation.
SN74LVTH162240DGGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVTH
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, 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:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
SN74LVTH162240DGGR FAQ
1.How can I place an order for SN74LVTH162240DGGR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVTH162240DGGR 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 SN74LVTH162240DGGR reliable?
The price and inventory of SN74LVTH162240DGGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVTH162240DGGR is usually 5 days.
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Once your SN74LVTH162240DGGR 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 SN74LVTH162240DGGR?
For technical support, including SN74LVTH162240DGGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVTH162240DGGR requirements.
6.How does Aetrix verify that SN74LVTH162240DGGR is sourced from the original manufacturer or authorized distributors?
All SN74LVTH162240DGGR 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 SN74LVTH162240DGGR meets industry standards.
7.What is the process for return or replacement of SN74LVTH162240DGGR?
All SN74LVTH162240DGGR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVTH162240DGGR, 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 SN74LVTH162240DGGR part is unused and in its original packaging.
Return procedure for SN74LVTH162240DGGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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