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Texas Instruments SN74LVTH16541DGG
- Part No.:
- SN74LVTH16541DGG
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
SN74LVTH16541DGG.pdf
- Description:
- IC BUFF NON-INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,545
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Product details
Overview
SN74LVTH16541 from Texas Instruments is a 3.3-V ABT 16-bit noninverting buffer/driver with dual 3-state output-enable control per 8-bit section, 2.7–3.6 V supply range, ±100 µA Ioff, and bus-hold on all data inputs. It enables mixed-mode 5-V/3.3-V system interfacing in backplane and memory expansion applications.
For engineers reviewing the SN74LVTH16541 datasheet, SN74LVTH16541 pinout, SN74LVTH16541 application, or SN74LVTH16541 equivalent, key selection criteria include hot-insertion support via Ioff and power-up 3-state, distributed VCC/GND for noise reduction, flow-through pinout for PCB layout optimization, and TTL-compatible input thresholds at 3.3-V VCC.
Technical Context
This device implements two independent 8-bit buffer sections, each controlled by two active-low OE inputs (e.g., 1OE1/1OE2 for Section 1); both must be low to enable outputs. Outputs enter high-impedance state if either OE is high, or when VCC is below 1.5 V during power-up/down.
Advanced BiCMOS Technology (ABT) delivers low static power and supports unregulated battery operation down to 2.7 V. Bus-hold circuitry maintains valid logic levels on floating inputs without external resistors, and distributed VCC/GND pins minimize simultaneous switching noise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - supports unregulated Li-ion or DC-DC rail operation without LDO regulation |
| Ioff | ±100 µA at VCC = 0 - prevents backflow current during hot insertion or partial power-down |
| Bus-Hold Current | ±75 µA at VCC = 3 V - actively holds floating inputs at valid logic level, eliminating pullup/pulldown resistors |
| tPLH / tPHL | 2.0 ns typical at VCC = 3.3 V - ensures sub-4 ns propagation delay for high-speed address/data buffering |
| IOL / IOH | 64 mA / –32 mA at VCC = 3 V - drives heavy capacitive loads or multiple TTL inputs without signal degradation |
| θJA | 89°C/W (DGG package) - defines thermal derating limit for sustained 16-bit switching at ambient up to 85°C |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded systems and communications equipment |
Pinout & Package
SN74LVTH16541 is housed in a 48-pin Thin Shrink Small-Outline (DGG) package with 0.5-mm pitch, 10.0 mm × 10.0 mm body, and exposed pad-less construction optimized for surface-mount assembly and thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE1, 1OE2, 2OE1, 2OE2 | Active-low output-enable controls | Independent enable for each 8-bit section; both OE signals per section must be low to activate Y outputs |
| 1A1–1A8, 2A1–2A8 | Data inputs | Noninverting inputs with bus-hold; tolerate 5-V inputs while operating at 3.3-V VCC |
| 1Y1–1Y8, 2Y1–2Y8 | 3-state buffered outputs | Drive 5-V TTL loads; high-impedance when any corresponding OE is high or VCC < 1.5 V |
| VCC (Pins 7, 18, 29, 40) | Power supply | Distributed VCC pins reduce IR drop and switching noise across 16-bit bus |
| GND (Pins 4, 10, 21, 31, 42, 45) | Ground reference | Six GND pins provide low-inductance return paths for high-speed switching currents |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode voltage tolerance | 5-V tolerant inputs/outputs with 3.3-V VCC - enables direct interface between legacy 5-V logic and modern low-voltage buses |
| Hot-insertion support | Ioff and power-up 3-state prevent damage and bus contention during live board replacement in telecom or server backplanes |
| Flow-through architecture | Input and output pins arranged on opposite sides - simplifies layer routing and reduces trace crossovers in dense PCB layouts |
| Latch-up immunity | Exceeds 500 mA per JESD 17 - ensures robustness against transient-induced latch-up in noisy industrial environments |
| ESD protection | 2000 V HBM, 200 V MM - meets MIL-STD-883 requirements for handling and assembly reliability |
Applications
| Backplane Data Buffering | Memory Expansion Interface |
|---|---|
Use Scenario: Isolating and driving wide parallel data buses between CPU and peripheral cards in modular rack systems. IC Role / Device Role / Timing Role: Noninverting 16-bit buffer with dual OE control per section, providing directionally agnostic data path isolation and drive strength scaling. Use Value: Enables clean signal integrity over long traces using 64 mA sink capability and distributed power/ground pins to suppress ground bounce. | Use Scenario: Interfacing 3.3-V microcontrollers with 5-V SRAM or Flash memory modules requiring TTL-level addressing and data lines. IC Role / Device Role / Timing Role: Level-shifting buffer with 5-V tolerant inputs and outputs, supporting mixed-voltage memory subsystems without discrete level translators. Use Value: Eliminates need for external pullups via integrated bus-hold and supports hot-plug memory module replacement via Ioff protection. |
| Industrial PLC I/O Expansion | Test Equipment Signal Conditioning |
Use Scenario: Expanding digital I/O capacity in programmable logic controllers where field-side 5-V sensors connect to 3.3-V controller ASICs. IC Role / Device Role / Timing Role: Robust 16-bit bidirectional buffer with latch-up immunity (>500 mA) and extended temperature range (–40°C to 85°C). Use Value: Ensures reliable operation in electrically noisy factory environments with high ESD risk and variable supply conditions. | Use Scenario: Driving multiple instrument channels from a central FPGA-based pattern generator in automated test equipment. IC Role / Device Role / Timing Role: Low-skew, high-drive buffer with sub-4 ns propagation delay and tight output enable timing (tPZL/tPHZ ≤ 5.5 ns). Use Value: Maintains precise timing alignment across 16-bit stimulus vectors while minimizing inter-channel skew in high-speed digital test setups. |
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 |
|---|---|---|---|
| SN74LVT16541DGGR | Same pinout and function but uses LVT (not LVTH) process; no bus-hold; lower drive (32 mA sink) | Lacks bus-hold - requires external pullups on unused inputs; unsuitable for floating-input scenarios | Select only if bus-hold is unnecessary and lower power consumption is prioritized |
| 74ALVCH16541T | 48-pin TSSOP; 1.65–3.6 V VCC; 24 mA drive; no Ioff or hot-insertion support | Not rated for hot insertion; lacks Ioff protection - incompatible with live-backplane systems | Choose only for cost-sensitive, non-hot-swap applications with strict low-voltage operation (≤3.3 V) |
Compared with SN74LVTH16541, SN74LVT16541DGGR omits bus-hold and reduces drive strength, while 74ALVCH16541T sacrifices hot-insertion capability and operates at narrower voltage range - making SN74LVTH16541 uniquely suited for mixed-voltage, hot-swap-capable industrial backplanes.
Availability
SN74LVTH16541 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, telecom backplane buffering, and memory interface design requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for SN74LVTH16541 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 heritage in high-reliability interface and bus technologies.
The SN74LVTH16541 belongs to TI's Widebus™ ABT family, engineered for high-speed, low-noise 16-bit bus interfacing in mixed-voltage systems requiring hot-swap resilience and industrial temperature operation.
FAQ
What is the operating voltage range for SN74LVTH16541?
The SN74LVTH16541 operates from 2.7 V to 3.6 V on VCC. It supports unregulated battery operation down to 2.7 V and tolerates 5-V input/output signals while powered at 3.3 V, enabling seamless integration into mixed-voltage systems without external level shifters. This range is fully specified per TI's recommended operating conditions.
Does SN74LVTH16541 support hot insertion?
Yes, SN74LVTH16541 supports hot insertion via two key features: Ioff circuitry disables outputs when VCC = 0 to prevent damaging current backflow, and power-up 3-state forces outputs into high-impedance during power ramp-up/down. These functions are explicitly validated in the datasheet for live-board replacement in telecom and server backplanes.
What is the purpose of bus-hold circuitry in SN74LVTH16541?
The bus-hold circuitry in SN74LVTH16541 actively maintains unused or floating data inputs at valid logic levels (±75 µA hold current at VCC = 3 V), eliminating the need for external pullup or pulldown resistors. This reduces BOM count, saves PCB space, and improves reliability in systems with dynamically configurable I/O.
How many output-enable inputs does SN74LVTH16541 have, and how do they work?
SN74LVTH16541 has four active-low output-enable inputs: 1OE1 and 1OE2 for the first 8-bit section, and 2OE1 and 2OE2 for the second. Both OE inputs per section must be low to enable that section's outputs; if either is high, the corresponding Y outputs go high-impedance. This provides granular control over 16-bit bus partitioning.
What package type is used for SN74LVTH16541, and what are its key mechanical features?
SN74LVTH16541 uses the DGG package: a 48-pin Thin Shrink Small-Outline (TSSOP) with 0.5-mm pitch, 10.0 mm × 10.0 mm body size, and no exposed thermal pad. Its flow-through pinout - inputs on one side, outputs on the opposite - optimizes PCB routing, while distributed VCC/GND pins minimize switching noise in high-speed applications.
SN74LVTH16541DGG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVTH
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 32mA, 64mA
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
SN74LVTH16541DGG FAQ
1.How can I place an order for SN74LVTH16541DGG through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVTH16541DGG 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 SN74LVTH16541DGG reliable?
The price and inventory of SN74LVTH16541DGG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVTH16541DGG is usually 5 days.
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Once your SN74LVTH16541DGG order is processed, you will receive an email with the shipment details and tracking number.
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5.How can I obtain technical support or documentation for SN74LVTH16541DGG?
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6.How does Aetrix verify that SN74LVTH16541DGG is sourced from the original manufacturer or authorized distributors?
All SN74LVTH16541DGG 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 SN74LVTH16541DGG meets industry standards.
7.What is the process for return or replacement of SN74LVTH16541DGG?
All SN74LVTH16541DGG units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVTH16541DGG, 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 SN74LVTH16541DGG part is unused and in its original packaging.
Return procedure for SN74LVTH16541DGG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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