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Texas Instruments SN74LVCR16245ADL
- Part No.:
- SN74LVCR16245ADL
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVCR16245ADL.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,291
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Product details
Overview
SN74LVCR16245ADL from Texas Instruments is a 16-bit dual-octal noninverting bus transceiver with 3-state outputs, designed for asynchronous bidirectional data transfer between 1.65–3.6-V buses. It supports mixed-mode signaling (5.5-V-tolerant inputs at 3.3-V VCC), delivers 4.8-ns max propagation delay at 3.3 V, and integrates 26-Ω series output resistors to suppress switching noise-used in server backplanes and telecom line cards requiring level translation and bus isolation.
For engineers reviewing the SN74LVCR16245ADL datasheet, SN74LVCR16245ADL pinout, SN74LVCR16245ADL application, or SN74LVCR16245ADL equivalent, key selection criteria include its Ioff-enabled live insertion capability, 5.5-V input tolerance across full VCC range (1.65–3.6 V), guaranteed 3-state isolation under partial power-down, and compatibility with TSSOP/SSOP/TVSOP 48-pin packages including DL.
Technical Context
The SN74LVCR16245ADL implements two independent 8-bit bidirectional transceiver sections, each controlled by dedicated DIR and OE pins. Its logic-level translation relies on overvoltage-tolerant input structures enabling 5.5-V signals at any valid VCC (1.65–3.6 V), while internal 26-Ω series resistors on all I/Os dampen edge rates to reduce ground bounce (VOLP < 0.8 V) and VOH undershoot (VOHV > 2 V) at 3.3 V.
Functional modes are defined by OE (isolation when high) and DIR (A→B when high, B→A when low). The device features active bus-hold on unused inputs, Ioff protection for back-drive immunity during power sequencing, and latch-up immunity exceeding 250 mA per JESD 17-making it suitable for hot-swap-capable infrastructure systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - Enables operation across LVTTL, LVCMOS, and mixed-voltage system rails. |
| Input Voltage Tolerance | Up to 5.5 V - Allows direct interfacing with 5-V logic without external level shifters. |
| Max Propagation Delay | 4.8 ns at 3.3 V - Supports high-speed data transfer in 100+ MHz bus applications. |
| Output Series Resistance | 26 Ω (integrated) - Eliminates need for external termination resistors; reduces EMI and signal ringing. |
| Ioff Current | ±10 µA at 5.5 V - Prevents damaging current flow during partial power-down or live insertion. |
| Operating Temperature | –40°C to +125°C - Qualified for industrial and telecom infrastructure environments. |
| ESD Rating | 2000-V HBM - Meets robustness requirements for handling and board assembly. |
Pinout & Package
SN74LVCR16245ADL is packaged in SSOP (DL) with 48 leads, body size 15.88 mm × 7.49 mm. Pin numbering follows standard DL package top-view layout with GND and VCC distributed across multiple pins for low-impedance power delivery.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (per 8-bit section) | Determines data flow direction: DIR = H enables A→B; DIR = L enables B→A. |
| 1OE, 2OE | Output enable input (per 8-bit section) | OE = L activates transceiver outputs; OE = H places both A and B ports in high-impedance state. |
| 1A1–1A8, 2A1–2A8 | A-side I/O port (data bus A) | Connects to local processor or controller bus; accepts 5.5-V inputs regardless of VCC. |
| 1B1–1B8, 2B1–2B8 | B-side I/O port (data bus B) | Interfaces with peripheral or expansion bus; outputs drive 3.3-V logic levels with 26-Ω edge control. |
| VCC (Pins 7, 18, 31, 42) | Power supply | Four distributed VCC pins minimize IR drop and improve noise immunity across wide bus traces. |
| GND (Pins 4, 10, 15, 21, 28, 34, 39, 45) | Ground reference | Eight GND pins provide low-inductance return paths essential for clean 3-state switching and EMI control. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode signal operation | 5.5-V-tolerant inputs at 1.65–3.6-V VCC enables seamless 5-V/3.3-V bus bridging without external translators. |
| Integrated 26-Ω series resistors | Eliminates need for 8–16 external termination resistors; reduces PCB area, BOM count, and layout complexity. |
| Ioff partial-power-down support | Prevents current backflow when VCC = 0 V, allowing safe insertion into powered-backplane systems. |
| Bus-hold circuitry | Actively holds unused A/B port inputs at valid logic levels, eliminating need for external pull-up/down resistors. |
| Low ground bounce & undershoot | VOLP < 0.8 V and VOHV > 2 V at 3.3 V ensure signal integrity in dense, high-speed backplane routing. |
Applications
| Server Backplane Interfacing | Industrial PLC I/O Expansion |
|---|---|
|
Use Scenario: Bidirectional data exchange between CPU module and hot-swappable I/O carrier card in 1U rack-mounted servers. IC Role / Device Role / Timing Role: Level-translating bus transceiver isolating 3.3-V processor bus from 5-V legacy peripheral modules. Use Value: Ioff and 5.5-V input tolerance allow safe insertion/removal while backplane remains powered; 4.8-ns tpd supports 100-MHz PCI-X timing margins. |
Use Scenario: Extending digital I/O capacity of programmable logic controller main unit via modular expansion chassis. IC Role / Device Role / Timing Role: Dual-octal transceiver buffering and translating control/data signals between 3.3-V FPGA and 5-V field sensors/actuators. Use Value: Integrated 26-Ω resistors suppress noise on long ribbon-cable runs; bus-hold eliminates floating-input risk in unpopulated slots. |
| Telecom Line Card Bridging | Notebook Docking Station Interface |
|
Use Scenario: Isolating and translating control signals between baseband processor and fronthaul interface ASIC on wireless base station line cards. IC Role / Device Role / Timing Role: Asynchronous bidirectional transceiver managing configuration registers and status reporting across voltage domains. Use Value: Guaranteed 125°C operation ensures reliability in sealed, fanless enclosures; low ICCZ (<5 µA) minimizes standby power in sleep modes. |
Use Scenario: Enabling high-speed parallel communication between notebook USB-C dock controller and external peripherals (e.g., dual-display video buffers). IC Role / Device Role / Timing Role: 16-bit transceiver managing sideband signals (SMBus, GPIO, reset) between host and dock subsystems. Use Value: 26-Ω output damping prevents signal integrity degradation on flexible printed circuits; SSOP (DL) package fits tight docking connector footprints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16245A | Lacks 5.5-V input tolerance; max VI = VCC + 0.3 V; no integrated 26-Ω resistors. | Requires external termination and level-shifting for 5-V interfaces; unsuitable for mixed-voltage hot-swap. | Select only if operating exclusively in 3.3-V-only systems with controlled edge rates and no live-insertion requirement. |
| SN74AVC16245 | Supports 1.2–3.6-V VCC; 5-V tolerant inputs only up to 3.6 V; lower tpd (3.2 ns @ 3.3 V) but no Ioff. | Better speed for low-voltage designs; lacks Ioff, limiting use in partial-power-down scenarios. | Prefer for battery-powered embedded systems needing ultra-low VCC; avoid where back-drive protection is mandatory. |
Compared with SN74LVC16245A and SN74AVC16245, the SN74LVCR16245ADL uniquely combines 5.5-V input tolerance, integrated 26-Ω resistors, and Ioff-making it the only option qualified for mixed-voltage hot-swap infrastructure without external components.
Availability
SN74LVCR16245ADL is available at Aetrix Electronics and suitable for server backplane interfacing, industrial PLC I/O expansion, and telecom line card bridging requiring stable component supply across extended temperature and mixed-voltage conditions.
Supply support for SN74LVCR16245ADL 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 solutions, with decades of heritage in logic and interface ICs.
The SN74LVCR16245ADL belongs to TI's Widebus™ family of advanced bus interface devices, engineered specifically for high-reliability, mixed-voltage infrastructure applications demanding robust level translation, noise control, and power sequencing resilience.
FAQ
What is the maximum input voltage rating for SN74LVCR16245ADL?
The SN74LVCR16245ADL supports input voltages up to 5.5 V across its entire VCC operating range (1.65–3.6 V), enabling direct connection to 5-V logic without external level shifters. This overvoltage tolerance is specified in the Absolute Maximum Ratings table and verified under Recommended Operating Conditions with VI ≤ 5.5 V.
Does SN74LVCR16245ADL support hot-plug or live-insertion applications?
Yes, SN74LVCR16245ADL supports live insertion via its Ioff feature, which disables outputs and limits leakage to ±10 µA when VCC = 0 V. This prevents damaging current backflow during partial power-down-critical for telecom line cards and server backplanes where modules are inserted into powered systems.
What package type is used for SN74LVCR16245ADL?
SN74LVCR16245ADL uses the SSOP (DL) package: 48-pin, body size 15.88 mm × 7.49 mm, with lead finish NIPDAU and moisture sensitivity level (MSL) 1. This package is confirmed in TI's orderable addendum and mechanical drawings for part number SN74LVCR16245ADLR and SN74LVCR16245ADLR.B.
How does the 26-Ω series resistor on each I/O benefit system design?
The integrated 26-Ω series resistors on all SN74LVCR16245ADL I/Os slow output edge rates to reduce ground bounce (VOLP < 0.8 V) and VOH undershoot (VOHV > 2 V), eliminating the need for 16 discrete termination resistors. This simplifies layout, cuts BOM cost, and improves signal integrity on long PCB traces or cables.
Can SN74LVCR16245ADL operate at 1.8 V VCC?
Yes, SN74LVCR16245ADL is fully specified from 1.65 V to 3.6 V VCC. At 1.8 V, it delivers typical tpd of 7.8 ns and supports VIH/VIL thresholds scaled to 0.65×VCC and 0.35×VCC respectively-making it compatible with low-voltage microcontrollers and FPGAs while maintaining 5.5-V input tolerance.
SN74LVCR16245ADL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVCR
- 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:
- 12mA, 12mA
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-SSOP
SN74LVCR16245ADL FAQ
1.How can I place an order for SN74LVCR16245ADL through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVCR16245ADL 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 SN74LVCR16245ADL reliable?
The price and inventory of SN74LVCR16245ADL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVCR16245ADL is usually 5 days.
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Once your SN74LVCR16245ADL 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 SN74LVCR16245ADL?
For technical support, including SN74LVCR16245ADL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVCR16245ADL requirements.
6.How does Aetrix verify that SN74LVCR16245ADL is sourced from the original manufacturer or authorized distributors?
All SN74LVCR16245ADL 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 SN74LVCR16245ADL meets industry standards.
7.What is the process for return or replacement of SN74LVCR16245ADL?
All SN74LVCR16245ADL units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVCR16245ADL, 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 SN74LVCR16245ADL part is unused and in its original packaging.
Return procedure for SN74LVCR16245ADL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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