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Texas Instruments TSB14AA1APFB
- Part No.:
- TSB14AA1APFB
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 48-TQFP
- Datasheet:
-
TSB14AA1APFB.pdf
- Description:
- IC BACKPLANE PHY 1394 48-TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,880
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Product details
Overview
TSB14AA1APFB from Texas Instruments is a 3.3-V IEEE 1394-1995/1394a-2000 backplane physical layer (PHY) transceiver IC for asynchronous-only operation at 50 or 100 Mbits/s. It provides LVCMOS-level PHY-link interface to link-layer controllers (e.g., TSB12LV01B), supports data-strobe bit-level encoding/decoding, and requires external 49.152-MHz (S50) or 98.304-MHz (S100) oscillator input. Used in industrial backplane-based FireWire networks requiring deterministic timing and cable-link compatibility.
For engineers reviewing the TSB14AA1APFB datasheet, TSB14AA1APFB pinout, TSB14AA1APFB application, or TSB14AA1APFB equivalent, key selection criteria include IEEE 1394a-compliant PHY-link timing, S50/S100 speed mode configuration via CLK_SEL0/CLK_SEL1, 48-pin TQFP (PFB) package constraints, and compatibility with TI's TSB12LV-series LLCs.
Technical Context
The TSB14AA1APFB implements a dedicated backplane PHY layer that performs data-strobe encoding/decoding, clock recovery from RDATA/RSTRB inputs, and resynchronization of received data to the local 24.576-MHz (S50) or 49.152-MHz (S100) system clock. It interfaces exclusively with external link-layer controllers via parallel 2-bit data/strobe paths and does not drive backplane traces directly.
It supports both open-collector and 3-state drivers, includes automatic ID/priority register saving after arbitration win, and features an expanded register set for debug and testability. The PHY-link interface complies fully with IEEE 1394a–2000 timing and register 0 auto-transfer requirements following bus reset.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.3 V ±10%; enables single-rail operation with 5-V-tolerant receive interface |
| Data Rate | 50 Mbits/s (S50) or 100 Mbits/s (S100); selected by CLK_SEL0/CLK_SEL1 pins |
| Operating Temperature | 0°C to 70°C; validated for commercial-grade backplane systems |
| Interface Standard | IEEE 1394-1995 and 1394a-2000 compliant PHY-link layer; ensures interoperability with legacy and enhanced link layers |
| Oscillator Input | 49.152 MHz (S50) or 98.304 MHz (S100); externally supplied reference for internal clock division |
| Output Logic | LVCMOS level; compatible with TI's TSB12LV-series link-layer controllers without level-shifting |
| Package | 48-pin TQFP (PFB), 7 mm × 7 mm × 1 mm; JEDEC-standard footprint with exposed pad for thermal management |
Pinout & Package
TSB14AA1APFB is housed in a 48-pin Plastic Quad Flatpack (TQFP-PFB), 7 mm × 7 mm body, 1 mm max height, with 0.5-mm pitch and exposed thermal pad. Pinout conforms to TI's PFB0048A mechanical drawing and JEDEC MS-026 registration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TDATA | Transmit Data Output | LVCMOS-encoded data stream output for backplane transmission |
| TSTRB | Transmit Strobe Output | LVCMOS-encoded strobe signal paired with TDATA for data-strobe encoding |
| RDATA | Receive Data Input | LVCMOS-level encoded data input from backplane; used with RSTRB for clock recovery |
| RSTRB | Receive Strobe Input | LVCMOS-level encoded strobe input; enables synchronous decoding with RDATA |
| CLK_SEL0 / CLK_SEL1 | Speed Mode Configuration | Binary-select pins determining S50 (24.576-MHz system clock) or S100 (49.152-MHz system clock) operation |
| REFCLK | Reference Clock Input | Accepts 49.152-MHz (S50) or 98.304-MHz (S100) external oscillator signal |
| VDD / GND | Power Supply Terminals | 3.3-V core supply with dedicated analog/digital ground separation per TI layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Data-Strobe Encoding | Enables robust backplane signaling with built-in clock recovery and jitter tolerance |
| IEEE 1394a PHY-Link Compliance | Guarantees timing and register-handling interoperability with 1394a-compliant link-layer controllers |
| Arbitration Logic Integration | Performs node initialization and priority arbitration without external logic or firmware overhead |
| Extended Register Set | Includes auto-saved ID/priority registers post-arbitration, simplifying system-level node management |
| Driver Flexibility | Supports both 3-state and open-collector external drivers, easing integration with diverse backplane topologies |
Applications
| Industrial Backplane Interconnect | FireWire-Aware Test Equipment |
|---|---|
Use Scenario: High-reliability modular instrumentation chassis with hot-swappable modules communicating over a shared backplane. IC Role / Device Role / Timing Role: PHY layer transceiver handling physical signaling between module-mounted LLCs and backplane traces. Use Value: Enables deterministic 50/100-Mbit/s asynchronous transfers with IEEE 1394a timing compliance and no external clock distribution required. | Use Scenario: Automated test systems using FireWire for synchronized multi-channel data capture and control. IC Role / Device Role / Timing Role: Backplane PHY providing low-jitter, resynchronized data/strobe streams to host LLC for timestamp-accurate packet assembly. Use Value: Delivers precise clock recovery and local resynchronization-critical for sub-microsecond inter-channel alignment in test instrumentation. |
| Legacy 1394-Aware Embedded Controllers | High-Density Data Acquisition Chassis |
Use Scenario: Retrofitting older 1394-1995-based embedded controllers with extended temperature support and improved arbitration. IC Role / Device Role / Timing Role: Drop-in PHY replacement supporting same LLC interface but adding auto-ID saving and 1394a link-layer handshake. Use Value: Extends product lifecycle without redesigning link-layer firmware or PCB layout; maintains full backward compatibility. | Use Scenario: Compact, fanless data acquisition systems where space-constrained backplanes require minimal component count and thermal footprint. IC Role / Device Role / Timing Role: Single-port PHY transceiver enabling high-density node placement with 7 mm × 7 mm TQFP package and integrated encode/decode logic. Use Value: Reduces external component count (no separate encoder/decoder ICs) and supports JEDEC-standard reflow assembly with Level-2 MSL rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 1394 backplane PHY applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSB14AA1AI | Same die, –40°C to 85°C extended temperature grade; identical pinout and electrical specs | Required for industrial environments with wider ambient operating range | Select TSB14AA1AI when board-level thermal profile exceeds 70°C ambient |
| TSB14C01A | First-generation 1394 backplane PHY; lacks 1394a compliance, smaller register set, no auto-ID saving | Legacy designs only; not recommended for new development per TI documentation | TSB14AA1APFB offers full 1394a timing compliance and enhanced debug features-preferred for all new designs |
Compared with TSB14AA1AI and TSB14C01A, the TSB14AA1APFB delivers commercial-temperature operation with full IEEE 1394a PHY-link compliance, expanded debug registers, and simplified system initialization-making it the TI-recommended solution for new backplane FireWire implementations.
Availability
TSB14AA1APFB is available at Aetrix Electronics and suitable for industrial backplane interconnect, FireWire-aware test equipment, and legacy 1394-Aware embedded controllers requiring stable component supply and long-term manufacturability.
Supply support for TSB14AA1APFB 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 company delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.
The TSB14AA1APFB belongs to TI's IEEE 1394 physical layer product line, engineered specifically for backplane-based FireWire networks requiring deterministic, low-latency, and standards-compliant physical signaling.
FAQ
What is the operating temperature range of the TSB14AA1APFB?
The TSB14AA1APFB is rated for 0°C to 70°C operation, as confirmed in TI's Packaging Information Addendum. This commercial-grade temperature specification applies to the exact part number TSB14AA1APFB and is distinct from the extended-range variants TSB14AA1AI (–40°C to 85°C) and TSB14AA1AT (–40°C to 105°C). Thermal design must ensure junction temperature remains within limits under full load.
Does the TSB14AA1APFB support both S50 and S100 data rates?
Yes, the TSB14AA1APFB supports both 50 Mbits/s (S50) and 100 Mbits/s (S100) asynchronous transfer rates. Selection is controlled by the CLK_SEL0 and CLK_SEL1 pins, which configure internal clock dividers. For S50, a 49.152-MHz REFCLK is required; for S100, a 98.304-MHz REFCLK is used. Both modes are fully supported in the TSB14AA1APFB silicon.
Is the TSB14AA1APFB pin-compatible with the TSB14C01A?
No, the TSB14AA1APFB is not pin-compatible with the TSB14C01A. Although both are 48-pin TQFP devices, TI documentation confirms functional and pinout differences-including updated PHY-link interface signals and expanded register access paths. Migration from TSB14C01A to TSB14AA1APFB requires PCB layout revision and firmware updates to leverage new features like auto-ID saving.
What external components are required for TSB14AA1APFB operation?
The TSB14AA1APFB requires an external 49.152-MHz (S50) or 98.304-MHz (S100) crystal oscillator connected to REFCLK, decoupling capacitors on all VDD pins per TI's layout guidelines, and external 3-state or open-collector drivers for backplane signal conditioning. No external encoder/decoder ICs are needed-the TSB14AA1APFB integrates full data-strobe encoding/decoding logic.
Which link-layer controllers are compatible with the TSB14AA1APFB?
The TSB14AA1APFB is designed to interface with TI's TSB12LV-series link-layer controllers, including the TSB12LV01B, TSB12LV32, and TSB12LV21B. Compatibility is ensured through LVCMOS-level signaling, IEEE 1394a-compliant PHY-link timing, and parallel 2-bit data/strobe handshaking. The TSB14AA1APFB datasheet explicitly lists these LLCs as intended partners.
TSB14AA1APFB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 48-TQFP
- Programmable:
- Not Verified
- Protocol:
- IEEE 1394
- Function:
- Physical Layer Controller
- Interface:
- -
- Standards:
- IEEE 1394-1995
- Voltage - Supply:
- 3.3V
- Current - Supply:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 48-TQFP (7x7)
- Grade:
- -
- Qualification:
- -
TSB14AA1APFB FAQ
1.How can I place an order for TSB14AA1APFB through Aetrix?
Please submit a Request for Quotation (RFQ) for TSB14AA1APFB 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 TSB14AA1APFB reliable?
The price and inventory of TSB14AA1APFB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSB14AA1APFB is usually 5 days.
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4.How is shipping managed for TSB14AA1APFB?
TSB14AA1APFB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSB14AA1APFB 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 TSB14AA1APFB?
For technical support, including TSB14AA1APFB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSB14AA1APFB requirements.
6.How does Aetrix verify that TSB14AA1APFB is sourced from the original manufacturer or authorized distributors?
All TSB14AA1APFB 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 TSB14AA1APFB meets industry standards.
7.What is the process for return or replacement of TSB14AA1APFB?
All TSB14AA1APFB units undergo pre-shipment inspection (PSI). If there is an issue with TSB14AA1APFB, 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 TSB14AA1APFB part is unused and in its original packaging.
Return procedure for TSB14AA1APFB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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