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Texas Instruments SN74LVT16245BDLG4
- Part No.:
- SN74LVT16245BDLG4
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVT16245BDLG4.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,505
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Product details
Overview
SN74LVT16245BDLG4 from Texas Instruments is a 3.3-V ABT 16-bit dual-octal noninverting bus transceiver with 3-state outputs, designed for asynchronous bidirectional data transfer between 3.3-V and 5-V buses. It features 48-pin SSOP packaging, ±64 mA output drive at VCC = 3.3 V, support for hot insertion via Ioff and power-up 3-state, and operates across –40°C to 85°C.
For engineers reviewing the SN74LVT16245BDLG4 datasheet, SN74LVT16245BDLG4 pinout, SN74LVT16245BDLG4 application, or SN74LVT16245BDLG4 equivalent, this device serves as a mixed-voltage interface solution in memory subsystems, backplane interconnects, and FPGA-to-ASIC bridging where TTL-compatible signaling and low ground bounce (<0.8 V) are critical.
Technical Context
The SN74LVT16245BDLG4 implements two independent 8-bit transceiver sections (1A↔1B and 2A↔2B), each controlled by dedicated DIR (direction) and OE (output enable) inputs. Its Advanced BiCMOS Technology (ABT) enables 3.3-V operation while tolerating 5-V inputs/outputs, supporting true mixed-mode signal interfacing without level shifters.
Each port maintains active input circuitry regardless of OE state, requiring external logic-level biasing on unused pins. The distributed VCC/GND pin layout minimizes high-speed switching noise, and flow-through pin mapping simplifies PCB routing-critical for high-density data bus designs operating up to 160 MHz (tPLH/tPHL ≤ 3.7 ns at VCC = 3.3 V, CL = 50 pF).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply Range | 2.7 V to 3.6 V - supports unregulated battery operation down to 2.7 V without functional degradation |
| Output Drive Strength | ±64 mA per output (IOL = 64 mA, IOH = –32 mA at VCC = 3.3 V) - sufficient to drive 50-pF loads with <3.7 ns propagation delay |
| Input Voltage Tolerance | –0.5 V to 5.5 V - enables direct connection to 5-V TTL logic without external clamping or translation |
| Hot-Insertion Support | Ioff and power-up 3-state - prevents backflow current and bus contention during live board insertion |
| Propagation Delay | tPLH/tPHL ≤ 3.7 ns (VCC = 3.3 V, CL = 50 pF) - ensures timing compliance in 100+ MHz synchronous bus systems |
| Ground Bounce (VOLP) | <0.8 V at VCC = 3.3 V, TA = 25°C - reduces signal integrity risk in multi-output switching scenarios |
| ESD Protection | 2000-V HBM, 200-V MM, 1000-V CDM - exceeds JEDEC JESD22 standards for robust handling in manufacturing environments |
Pinout & Package
SN74LVT16245BDLG4 is housed in a 48-pin SSOP (Shrink Small-Outline Package), DL package variant, with 0.5-mm lead pitch, 12.6 mm × 6.2 mm body dimensions, and 1.2 mm max height. Pin 1 is located at top-left corner with beveled edge marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (active-HIGH) | Selects data flow direction per 8-bit section: DIR = LOW → B→A; DIR = HIGH → A→B |
| 1OE, 2OE | Output enable input (active-LOW) | Disables both A- and B-port outputs simultaneously into high-impedance state when HIGH |
| 1A1–1A8, 2A1–2A8 | A-side data I/O terminals | Connect to local 3.3-V bus; inputs always active - must be tied HIGH/LOW if unused |
| 1B1–1B8, 2B1–2B8 | B-side data I/O terminals | Interface to 5-V or 3.3-V remote bus; tolerate 5.5-V inputs regardless of VCC |
| VCC (Pins 7, 16, 25, 34, 43) | Power supply | Distributed VCC pins reduce simultaneous switching noise and improve PDN stability |
| GND (Pins 4, 13, 22, 31, 40) | Ground reference | Multiple GND pins provide low-inductance return paths for high-speed switching currents |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-voltage interface capability | 3.3-V VCC with 5-V tolerant I/Os enables seamless integration between legacy 5-V and modern low-voltage logic domains |
| Flow-through pin architecture | Input and output pins aligned on opposite sides of package - eliminates layer jumps and reduces trace length in dense PCB layouts |
| Low ground bounce (VOLP) | <0.8 V typical at 3.3 V - preserves signal integrity during parallel output switching in memory or address buses |
| Hot-insertion readiness | Ioff disables outputs when VCC = 0 V; power-up 3-state prevents bus conflicts during ramp-up - certified for live-swap applications |
| Latch-up immunity | Exceeds 100 mA per JESD78 Class II - ensures reliability in noisy industrial or telecom environments |
Applications
| Memory Subsystem Interface | FPGA-to-ASIC Bridging |
|---|---|
|
Use Scenario: Bidirectional data exchange between 3.3-V FPGA I/O banks and 5-V SRAM or Flash memory devices. IC Role / Device Role / Timing Role: Bus transceiver managing address/data/control lines with direction control synchronized to memory read/write strobes. Use Value: Eliminates need for discrete level translators; 3.7 ns propagation delay meets 100-MHz memory access timing budgets. |
Use Scenario: Interfacing a 3.3-V FPGA to a 5-V ASIC in telecom line-card backplanes. IC Role / Device Role / Timing Role: Voltage-tolerant buffer isolating domains while preserving signal slew rate and timing margins. Use Value: Supports hot-swap maintenance without system reset; Ioff prevents backfeeding during partial power-down. |
| Industrial Backplane Interconnect | Test Equipment Signal Routing |
|
Use Scenario: Data multiplexing across modular PLC I/O modules operating at mixed voltage levels. IC Role / Device Role / Timing Role: Dual-octal transceiver enabling configurable bus direction per slot under microcontroller control. Use Value: Distributed VCC/GND pins suppress noise in electrically noisy factory-floor environments; latch-up immunity ensures long-term field reliability. |
Use Scenario: Reconfigurable signal path selection in automated test equipment (ATE) channel cards. IC Role / Device Role / Timing Role: 3-state-enabled bus switch routing DUT signals between measurement instruments and stimulus sources. Use Value: 64 mA drive strength supports fanout to multiple instruments; fast enable/disable times (<5.5 ns tPZL/tPHZ) minimize test cycle overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16245ADGGR | Lower drive (±24 mA), 1.65–3.6 V VCC range, no 5-V tolerance - requires external level shifting for 5-V interfaces | Suitable only for pure 3.3-V or lower-voltage systems; not drop-in compatible with mixed-voltage designs | Choose when cost and power efficiency outweigh mixed-voltage requirements and board space allows level-shifter integration. |
| SN74ALVC16245DGGR | Higher speed (tPLH ≤ 2.8 ns), same 1.65–3.6 V range and no 5-V tolerance; improved noise immunity but lacks Ioff | Not suitable for hot-insertion or unpowered-bus scenarios; requires external pullups for safe power-down states | Select for high-speed 3.3-V-only buses where timing margin is critical and hot-swap is not required. |
Compared with SN74LVC16245ADGGR and SN74ALVC16245DGGR, the SN74LVT16245BDLG4 uniquely delivers 5-V I/O tolerance, hot-insertion support, and robust 64-mA drive within the same 48-pin SSOP footprint - making it the only option for legacy-system upgrades requiring zero hardware redesign.
Availability
SN74LVT16245BDLG4 is available at Aetrix Electronics and suitable for memory subsystems, FPGA-ASIC bridging, and industrial backplane interconnects requiring stable component supply, long-lifecycle support, and guaranteed mixed-voltage interoperability.
Supply support for SN74LVT16245BDLG4 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 connectivity technologies, with over 90 years of innovation in high-reliability IC design and manufacturing.
The SN74LVT16245BDLG4 belongs to TI's Widebus™ family of ABT transceivers, engineered specifically for high-speed, mixed-voltage bus interfacing in telecommunications infrastructure, industrial automation, and computing systems demanding robust signal integrity and hot-swap capability.
FAQ
What voltage levels can SN74LVT16245BDLG4 safely interface between?
SN74LVT16245BDLG4 supports true mixed-mode operation: it operates from a 2.7–3.6 V VCC supply while accepting and driving signals from –0.5 V to 5.5 V on all A- and B-port I/Os. This allows direct connection between 3.3-V logic domains and legacy 5-V TTL systems without external level shifters - a key differentiator confirmed in TI's SCBS715E datasheet Section 1.
Does SN74LVT16245BDLG4 support hot insertion, and how is it implemented?
Yes, SN74LVT16245BDLG4 supports hot insertion via two integrated features: Ioff circuitry disables outputs when VCC = 0 V to prevent damaging current backflow, and power-up 3-state holds outputs in high-impedance during power ramp-up/down. These functions are production-tested and documented in the Absolute Maximum Ratings and Recommended Operating Conditions tables of the official datasheet.
What is the maximum data rate supported by SN74LVT16245BDLG4 in practical PCB layouts?
Based on its specified tPLH/tPHL ≤ 3.7 ns (VCC = 3.3 V, CL = 50 pF), SN74LVT16245BDLG4 supports reliable operation up to approximately 160 MHz in well-designed layouts. Real-world throughput depends on trace impedance, stub length, and termination - TI's application notes recommend flow-through routing and distributed VCC/GND to maintain signal integrity at these speeds.
Can unused input pins on SN74LVT16245BDLG4 be left floating?
No - all unused or undriven inputs (including DIR, OE, and data I/Os) must be externally biased to a valid logic HIGH (VCC) or LOW (GND) level. Floating inputs increase ICC and ICCZ, cause unpredictable output states, and may trigger oscillation. TI explicitly mandates this in Section 6.1 of the SCBS715E datasheet under "Recommended Operating Conditions."
Is SN74LVT16245BDLG4 pin-compatible with other packages in the LVT16245B family?
SN74LVT16245BDLG4 (DL package) shares identical pinout and function mapping with SN74LVT16245BDGGR (DGG) and SN74LVT16245BDGVR (DGV) variants - all are 48-pin packages with matching signal assignments per TI's package drawings MPDS006C and DGG0048A. However, mechanical dimensions and thermal performance differ, requiring layout review before substitution.
SN74LVT16245BDLG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVT
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Logic Type:
- Transceiver, 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-SSOP
SN74LVT16245BDLG4 FAQ
1.How can I place an order for SN74LVT16245BDLG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVT16245BDLG4 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 SN74LVT16245BDLG4 reliable?
The price and inventory of SN74LVT16245BDLG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVT16245BDLG4 is usually 5 days.
3.What payment methods are accepted for SN74LVT16245BDLG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVT16245BDLG4 transactions.
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4.How is shipping managed for SN74LVT16245BDLG4?
SN74LVT16245BDLG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVT16245BDLG4 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 SN74LVT16245BDLG4?
For technical support, including SN74LVT16245BDLG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVT16245BDLG4 requirements.
6.How does Aetrix verify that SN74LVT16245BDLG4 is sourced from the original manufacturer or authorized distributors?
All SN74LVT16245BDLG4 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 SN74LVT16245BDLG4 meets industry standards.
7.What is the process for return or replacement of SN74LVT16245BDLG4?
All SN74LVT16245BDLG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVT16245BDLG4, 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 SN74LVT16245BDLG4 part is unused and in its original packaging.
Return procedure for SN74LVT16245BDLG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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