SN74LVTH16543DL Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN74LVTH16543DL is a 3.3V ABT 16-bit registered bus transceiver from Texas Instruments in a 56-pin SOIC package, featuring 3-state outputs and independent output enable for each bidirectional data direction. From $3.50, in stock, worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 56
- Lifecycle
- ACTIVE
- Datasheet
- SN74LVTH16543DL Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.0200(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 16-bit bidirectional registered transceiver with independent output enable control for each direction, enabling flexible bus mastering and isolation
- 3.3V LVT-family operation with 5V input tolerance for direct interfacing between 3.3V and 5V bus architectures without level shifters
- 3-state output capability with 50pF load drive supporting high-speed data bus applications at typical propagation delays below 5ns
- 56-pin SOIC package balancing board space efficiency with accessible pitch for automated assembly in high-density digital backplane designs
Applications
The SN74LVTH16543DL is used in high-speed 16-bit data bus buffering and isolation applications in workstations, servers, and embedded computing systems where bidirectional registered data transfer is required between system buses. Its independent output enable for each direction makes it ideal for memory bus interfaces, FPGA I/O expansion, and backplane data routing where bus turnaround control is critical. The 5V-tolerant inputs also allow it to bridge legacy 5V buses to modern 3.3V processor and FPGA I/O without additional level translation circuitry.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | WITH INDEPENDENT OUTPUT ENABLE FOR EACH DIRECTION |
| Control Type | INDEPENDENT CONTROL |
| Count Direction | BIDIRECTIONAL |
| Family | LVT |
| JESD-30 Code | R-PDSO-G56 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | REGISTERED BUS TRANSCEIVER |
| Max I(ol) | 0.064A |
| Number of Bits | 8 |
| Number of Functions | 16 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SSOP56,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, SHRINK PITCH |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 5mA |
| Prop. Delay@Nom-Sup | 3.2ns |
| Propagation Delay (tpd) | 4.9ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | NO |
| Supply Voltage-Max (Vsup) | 3.6V |
| Supply Voltage-Min (Vsup) | 2.7V |
| Supply Voltage-Nom (Vsup) | 3.3V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.635mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What does the SN74LVTH16543DL registered transceiver do?
The SN74LVTH16543DL is a 16-bit bidirectional registered bus transceiver that latches input data on the clock edge and presents it at 3-state outputs. It stores data independently in each direction using internal registers, enabling synchronous bidirectional data transfer across isolated bus segments in digital systems.
Does the SN74LVTH16543DL support 5V logic interfacing?
Yes, the SN74LVTH16543DL belongs to the LVT (Low Voltage Technology) family and features 5V-tolerant inputs. This allows direct connection of 5V logic signal sources to the input pins while operating the device at 3.3V, eliminating the need for external level shifters when bridging 5V and 3.3V bus systems.
What is the independent output enable feature of the SN74LVTH16543DL?
The SN74LVTH16543DL provides separate output enable control signals for the A-to-B and B-to-A data directions. This allows the host system to independently enable or tristate the outputs in each direction, giving precise control over which bus segment drives the data lines — critical for avoiding bus contention in bidirectional backplane designs.
What package does the SN74LVTH16543DL come in, and how many pins does it have?
The SN74LVTH16543DL is packaged in a 56-pin Small Outline IC (SOIC) package, designated JESD-30 code R-PDSO-G56. This surface-mount through-hole compatible package offers a standard lead pitch and is suitable for automated PCB assembly in industrial and computing board production.
What are typical applications of the SN74LVTH16543DL?
Typical applications include 16-bit memory bus transceivers, backplane data bus buffers, FPGA I/O bus expansion, and processor-to-peripheral data path isolation in servers, workstations, embedded controllers, and industrial computers where synchronized bidirectional data transfer across voltage domains is required.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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| Qty. | Unit Price | Ext. Price |
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| 1+ | $1.2750 | $1.27 |
| 5+ | $1.1730 | $5.87 |
| 22+ | $1.0200 | $22.44 |
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