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Texas Instruments SN65LVCP408PAPR
- Part No.:
- SN65LVCP408PAPR
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 64-PowerTQFP
- Datasheet:
-
SN65LVCP408PAPR.pdf
- Description:
- IC CROSSPOINT SW 1 X 8:8 64HTQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,496
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Product details
Overview
SN65LVCP408PAPR from Texas Instruments is an 8×8 non-blocking gigabit crosspoint switch with VML differential I/O, supporting up to 4.25 Gbps per lane, 30 ps deterministic jitter, integrated 100-Ω differential termination, and I²C-controlled routing. It serves as a high-speed signal router in telecom backplanes and XAUI protocol redundancy systems.
For engineers reviewing the SN65LVCP408PAPR datasheet, SN65LVCP408PAPR pinout, SN65LVCP408PAPR application, or SN65LVCP408PAPR equivalent, key selection criteria include deterministic jitter performance at 4.25 Gbps, per-lane pre-emphasis (0/3/6/10 dB), receive equalization (9/13 dB), flow-through QFP pinout for PCB layout efficiency, and I²C address configurability via ADDR1/ADDR2 pins.
Technical Context
The SN65LVCP408PAPR implements a fully differential 8×8 non-blocking architecture with eight independent 8:1 multiplexers - one per output - enabling any input to be routed to any output without contention. Each path includes selectable transmit pre-emphasis and receive equalization to compensate for channel loss on FR4 backplanes up to 43 inches.
It uses VML signaling with internal 100-Ω differential termination, operates from a single 3.3-V supply, and integrates biasing (VBB) and common-mode control for AC-coupled CML-compatible inputs. Control is implemented via I²C interface (100 kHz) with pin-strapped slave addressing (ADDR1/ADDR2) and optional hardware override (I2C_EN, PRE, EQ, SWT).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 4.25 Gbps per lane - supports XAUI, 3G-SDI, and high-speed serial backplane links |
| Deterministic Jitter | 30 ps peak-to-peak at 4.25 Gbps with EQ=13 dB - enables robust eye opening after 25-inch FR4 trace |
| Pre-Emphasis | Selectable per lane: 0/3/6/10 dB - compensates high-frequency loss in long PCB traces |
| Equalization | Selectable per input: 9 dB or 13 dB - restores signal integrity degraded by inter-symbol interference |
| Termination | Integrated 100-Ω differential on-chip termination - eliminates external resistors, saves board space |
| Supply | Single 3.3 V ±5% - simplifies power delivery vs. dual-supply high-speed switches |
| I²C Interface | Standard-mode (100 kHz), 7-bit address with ADDR1/ADDR2 pin selection - supports up to four devices on one bus |
Pinout & Package
SN65LVCP408PAPR is housed in a 64-pin PowerPAD™ QFP (PAP) package with exposed thermal pad. The flow-through pinout minimizes layer transitions and crosstalk: differential inputs (xA/xB) occupy one side, outputs (xY/xZ) the opposite, and control signals (SCL/SDA/ADDR1/ADDR2/RESN/I2C_EN/SWT/PRE/EQ) are grouped centrally.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| xA (5,8,11,14,18,21,24,27) | Differential Input P | Positive leg of CML-compatible input pair; internally terminated to VBB |
| xB (6,9,12,15,19,22,25,28) | Differential Input N | Negative leg of CML-compatible input pair; forms 100-Ω differential termination with xA |
| xY (34,37,40,43,51,54,57,60) | Differential Output P | Positive leg of VML output; supports 3-state control and pre-emphasis |
| xZ (33,36,39,42,50,53,56,59) | Differential Output N | Negative leg of VML output; matched skew with xY for low jitter |
| SCL (45), SDA (46) | I²C Clock/Data | Open-drain interface for register configuration; requires external pull-ups |
| ADDR1 (47), ADDR2 (48) | I²C Address Select | Set 2 LSBs of 7-bit slave address (01011xx); enable up to 4 devices on same bus |
| RESN (3) | Active-Low Reset | Must be driven low at power-up to initialize register map and routing state |
| I2C_EN (63) | I²C Enable Control | When low, PRE/EQ pins override register settings; when high, full I²C control active |
Key Features
| Feature | Design Value |
|---|---|
| Non-blocking 8×8 switching matrix | Enables arbitrary input-to-output mapping without contention - critical for redundant routing in telecom switches |
| Per-lane programmable pre-emphasis | Four settings (0/3/6/10 dB) allow precise compensation for varying trace lengths and losses |
| Per-input configurable equalization | Two gain modes (9 dB / 13 dB) adapt to different channel degradations without external components |
| Integrated 100-Ω differential termination | Eliminates 16 external 50-Ω resistors - reduces BOM count, layout area, and impedance discontinuities |
| Flow-through QFP pinout | Input and output banks placed on opposite sides - enables straight PCB routing, minimizes vias and skew |
| PowerPAD™ thermal enhancement | Exposed center pad soldered to ground plane - achieves θJA = 21.2°C/W with proper via array |
Applications
| Wireless Base Station Backhaul | XAUI Protocol Redundancy |
|---|---|
Use Scenario: Routing multiple 3.125 Gbps XAUI lanes between line cards and switch fabric in LTE macro base stations. IC Role / Device Role / Timing Role: Signal path selector enabling hot-swappable module failover without packet loss. Use Value: 30 ps deterministic jitter ensures BER <10⁻¹² after 43-inch FR4 trace; 3-state outputs isolate faulty lanes during switchover. |
Use Scenario: Providing redundant data paths in 10 Gigabit Ethernet switches compliant with IEEE 802.3ae. IC Role / Device Role / Timing Role: High-speed crosspoint enabling dynamic rerouting of XAUI lanes upon link failure detection. Use Value: Per-lane pre-emphasis and equalization maintain signal integrity across mismatched PCB channels; I²C allows real-time reconfiguration. |
| High-Speed Network Router Fabric | 3G-SDI Video Distribution |
Use Scenario: Interconnecting ASICs and SerDes in core routers handling 40G/100G aggregated traffic. IC Role / Device Role / Timing Role: Low-latency (500 ps typical propagation delay), non-blocking interconnect between processing stages. Use Value: 4.25 Gbps operation supports multi-lane aggregation; flow-through pinout simplifies high-density HDI routing. |
Use Scenario: Switching uncompressed 2.97 Gbps HD-SDI video streams between cameras, recorders, and monitors in broadcast facilities. IC Role / Device Role / Timing Role: Bit-accurate signal router preserving eye diagram integrity for SMPTE 424M compliance. Use Value: Validated DC- and AC-coupled operation per Figure 12–13; 13 dB EQ recovers degraded SDI eyes after long coax runs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed crosspoint switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN65LVCP22PAPR | 2×2 crosspoint; no I²C interface; fixed pre-emphasis (6 dB); no equalization | Suitable only for point-to-point fanout or simple muxing - lacks routing flexibility and channel conditioning | Choose for cost-sensitive, low-channel-count designs where full 8×8 programmability is unnecessary |
| DS10BR254TSQ/NOPB | 4×4 crosspoint; LVDS I/O; no integrated termination; external pre-emphasis required | Requires discrete termination and equalization circuitry; higher layout complexity and jitter sensitivity | Prefer when LVDS compatibility is mandatory and system-level equalization is already implemented externally |
Compared with SN65LVCP408PAPR, the SN65LVCP22PAPR offers lower gate count and cost but sacrifices scalability and signal conditioning; the DS10BR254TSQ/NOPB provides LVDS compatibility but increases BOM and layout effort due to missing on-die termination and equalization.
Availability
SN65LVCP408PAPR is available at Aetrix Electronics and suitable for wireless infrastructure, telecom backplane, and high-speed video distribution requiring stable component supply across extended temperature ranges (–40°C to 85°C).
Supply support for SN65LVCP408PAPR 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 delivering analog, embedded processing, and connectivity solutions with emphasis on reliability, signal integrity, and power efficiency.
The SN65LVCP408PAPR belongs to TI's high-speed interface portfolio, designed specifically for gigabit serial routing in telecom, datacom, and broadcast video systems where deterministic jitter, channel adaptation, and layout simplicity are critical.
FAQ
What is the maximum supported data rate for SN65LVCP408PAPR?
The SN65LVCP408PAPR supports up to 4.25 Gbps per lane, validated with PRBS27-1 pattern and measured under recommended operating conditions (VCC = 3.3 V, TA = 25°C). This rate meets XAUI and 3G-SDI requirements, and the device maintains 30 ps deterministic jitter at this speed with EQ=13 dB enabled.
Does SN65LVCP408PAPR require external termination resistors?
No, SN65LVCP408PAPR integrates 100-Ω differential termination on all eight inputs and outputs. This eliminates the need for 16 external 50-Ω resistors, reducing PCB area, component count, and potential impedance mismatches - a key advantage over discrete termination solutions.
How is I²C addressing configured on SN65LVCP408PAPR?
SN65LVCP408PAPR uses a 7-bit I²C slave address where the upper five bits are factory-fixed (01011), and the two LSBs are set by ADDR1 and ADDR2 pins. These pins accept logic-high (VCC), logic-low (GND), or active drive, enabling up to four SN65LVCP408PAPR devices on a single I²C bus without address conflict.
What is the function of the VBB pin on SN65LVCP408PAPR?
VBB (Pin 16) provides internal biasing voltage for AC-coupled differential inputs. It establishes the common-mode reference (~1.6 V) for CML-compatible receivers, enabling seamless integration with AC-coupled sources without external bias networks - critical for maintaining signal integrity in backplane applications.
Can SN65LVCP408PAPR outputs be individually 3-stated?
Yes, each of the eight outputs on SN65LVCP408PAPR can be independently placed in high-impedance state via bit 2 of its corresponding Output Port Control Register (e.g., Register 0x00–0x07). This enables dynamic lane isolation during system reconfiguration or fault recovery without affecting other active paths.
SN65LVCP408PAPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 65LVCP
- Package/Case:
- 64-PowerTQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Crosspoint Switch
- Circuit:
- 1 x 8:8
- Independent Circuits:
- 1
- Current - Output High, Low:
- -
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 3.14V ~ 3.47V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-HTQFP (10x10)
SN65LVCP408PAPR FAQ
1.How can I place an order for SN65LVCP408PAPR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN65LVCP408PAPR 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 SN65LVCP408PAPR reliable?
The price and inventory of SN65LVCP408PAPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN65LVCP408PAPR is usually 5 days.
3.What payment methods are accepted for SN65LVCP408PAPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN65LVCP408PAPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN65LVCP408PAPR?
SN65LVCP408PAPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN65LVCP408PAPR 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 SN65LVCP408PAPR?
For technical support, including SN65LVCP408PAPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN65LVCP408PAPR requirements.
6.How does Aetrix verify that SN65LVCP408PAPR is sourced from the original manufacturer or authorized distributors?
All SN65LVCP408PAPR 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 SN65LVCP408PAPR meets industry standards.
7.What is the process for return or replacement of SN65LVCP408PAPR?
All SN65LVCP408PAPR units undergo pre-shipment inspection (PSI). If there is an issue with SN65LVCP408PAPR, 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 SN65LVCP408PAPR part is unused and in its original packaging.
Return procedure for SN65LVCP408PAPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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