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Texas Instruments TSB14AA1APFBG4
- Part No.:
- TSB14AA1APFBG4
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 48-TQFP
- Datasheet:
-
TSB14AA1APFBG4.pdf
- Description:
- IC BACKPLANE PHY 1394 48-TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,162
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Product details
Overview
TSB14AA1APFBG4 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 interfaces with link-layer controllers (e.g., TSB12LV01B), supports LVCMOS-level I/O, requires external 49.152-MHz (S50) or 98.304-MHz (S100) oscillator input, and operates from 0°C to 70°C in a 48-pin TQFP (PFB) package.
For engineers reviewing the TSB14AA1APFBG4 datasheet, TSB14AA1APFBG4 pinout, TSB14AA1APFBG4 application, or TSB14AA1APFBG4 equivalent, key selection considerations include IEEE 1394a-compliant PHY-link timing, dual-data/strobe transmit/receive architecture, 3-state/open-collector driver support, S50/S100 speed mode selection via CLK_SEL0/CLK_SEL1, and compatibility with TI's TSB12LV-series LLCs.
Technical Context
The TSB14AA1APFBG4 implements data-strobe bit-level encoding per IEEE 1394-1995, resynchronizing incoming RDATA/RSTRB to the local system clock using recovered timing. It provides dedicated TDATA/TSTRB outputs and RDATA/RSTRB inputs, with no internal backplane drive capability-external drivers required.
It features an expanded register set supporting automatic ID/priority save after arbitration win, IEEE 1394a-compliant PHY-link interface (including auto-transfer of Register 0 post-bus-reset), and software compatibility with TSB14CO1APM. Clock generation uses internal division: 98.304 MHz → 49.152 MHz (S100), or 49.152 MHz → 24.576 MHz (S50).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.3 V ±10%; enables single-rail system integration with TI's 3.3-V link-layer controllers |
| Data Rate | 50 or 100 Mbits/s asynchronous only; selectable via external oscillator and CLK_SEL pins |
| Operating Temperature | 0°C to 70°C; validated for commercial-grade backplane systems without extended thermal margin |
| Package | 48-pin TQFP (PFB), 7 mm × 7 mm × 1 mm; JEDEC-standard footprint with Level-2 MSL rating |
| I/O Interface | LVCMOS-compatible; supports 3-state and open-collector drivers externally connected to backplane |
| IEEE Compliance | Fully compliant with IEEE 1394–1995 and IEEE 1394a–2000 PHY/link interface timing and protocol requirements |
| Oscillator Input | 49.152 MHz (S50) or 98.304 MHz (S100); no internal oscillator-external crystal or clock source required |
Pinout & Package
TSB14AA1APFBG4 is housed in a 48-pin Plastic Quad Flatpack (TQFP-PFB), 7 mm × 7 mm body, 0.5 mm pitch, 1.2 mm max height, JEDEC MS-026 registered, RoHS-compliant with NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | 3.3-V core and I/O supply; decoupling required per TI layout guidelines |
| GND | Ground reference | Dedicated analog/digital ground pins; must be connected to low-impedance plane |
| TDATA, TSTRB | Transmit data/strobe outputs | Differential-capable LVCMOS outputs driving external backplane drivers |
| RDATA, RSTRB | Receive data/strobe inputs | LVCMOS inputs accepting encoded backplane signals; internally resynchronized |
| CLK_SEL0, CLK_SEL1 | Speed mode select | Binary-coded inputs selecting S50 (00), S100 (01), or reserved modes |
| REFCLK | Oscillator input | Accepts 49.152-MHz or 98.304-MHz single-ended CMOS clock; no internal oscillator |
| RESET_N | Active-low reset | Asynchronous hardware reset; initializes internal registers and arbitration logic |
| PHY_CTRL[1:0] | PHY control interface | Two-wire bus for register access by LLC; compatible with TSB12LV-series controllers |
Key Features
| Feature | Design Value |
|---|---|
| IEEE 1394a–2000 PHY-link compliance | Guarantees interoperability with 1394a-compliant link-layer controllers including auto-register-0 transfer on bus reset |
| Expanded register set with arbitration memory | Stores winning node ID and priority automatically-enables deterministic re-arbitration without host intervention |
| Dual-speed oscillator support (S50/S100) | Single device supports both 50 and 100 Mbits/s via external clock selection and CLK_SEL configuration |
| 3-state and open-collector driver compatibility | Enables flexible backplane interface design using either TI-recommended or third-party line drivers |
| Resynchronization of received data | Recovers clock from RDATA/RSTRB and retimes serial bits to local system clock before parallel split to LLC |
Applications
| Backplane-Based Industrial Control Networks | High-Speed Test Equipment Interconnect |
|---|---|
Use Scenario: Multi-node programmable logic controller (PLC) chassis with hot-swappable I/O modules communicating over a shared backplane. IC Role / Device Role / Timing Role: PHY layer translator between LLC and backplane, handling data-strobe encoding/decoding and clock recovery at 100 Mbits/s. Use Value: Enables deterministic, low-jitter packet transmission across noisy industrial backplanes while maintaining IEEE 1394a timing compliance. | Use Scenario: Automated test equipment (ATE) mainframe connecting modular instrument cards (DMM, SMU, digitizer) via high-integrity backplane. IC Role / Device Role / Timing Role: Asynchronous PHY transceiver providing precise strobe-aligned data capture and transmission between card and controller. Use Value: Supports synchronized multi-channel sampling and stimulus delivery using 1394a-compliant timing without requiring custom PHY firmware. |
| Medical Imaging Data Acquisition Chassis | Avionics Data Concentrator Units |
Use Scenario: CT/MRI scanner backplane linking detector modules, FPGA-based preprocessing units, and central image reconstruction engines. IC Role / Device Role / Timing Role: Physical layer interface ensuring bit-accurate, low-latency transfer of time-critical sensor data streams. Use Value: Delivers error-resilient data-strobe encoding and local clock resynchronization-critical for maintaining pixel timing integrity across distributed acquisition nodes. | Use Scenario: Line-replaceable unit (LRU) in flight control systems aggregating ARINC 429, discrete I/O, and sensor data onto a deterministic backplane. IC Role / Device Role / Timing Role: IEEE 1394 PHY enabling time-triggered communication between safety-critical subsystems with known latency bounds. Use Value: Provides certified 1394a-compliant PHY behavior required for DO-254/DO-178C traceable designs without custom qualification effort. |
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, identical electrical specs; differs only in temperature grade (0°C to 70°C vs. –40°C to 85°C for 'I' suffix) | Not rated for extended industrial or automotive ambient ranges | Select TSB14AA1APFBG4 when standard commercial temp range suffices and PFBG4 marking is required for traceability |
| TSB14AA1AT | Same silicon, identical functionality; rated for –40°C to 105°C operation with different thermal validation | Suitable for under-hood or high-power chassis environments where ambient exceeds 70°C | Choose TSB14AA1AT only if full automotive or extended industrial temperature operation is mandatory |
Compared with TSB14AA1AI and TSB14AA1AT, the TSB14AA1APFBG4 offers identical 1394 PHY functionality and pinout but is specifically marked and qualified for 0°C to 70°C operation with PFBG4 packaging-making it optimal for cost-sensitive, volume commercial backplane designs where extended temperature range adds unnecessary cost and qualification overhead.
Availability
TSB14AA1APFBG4 is available at Aetrix Electronics and suitable for backplane-based industrial control networks, high-speed test equipment interconnect, and medical imaging data acquisition chassis requiring stable component supply and long-term production continuity.
Supply support for TSB14AA1APFBG4 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 designing analog, embedded processing, and connectivity products for industrial, automotive, and communications markets.
The TSB14AA1A family was developed as a second-generation IEEE 1394 backplane PHY to replace TSB14C01A, targeting high-volume, cost-optimized 1394-based chassis architectures with strict timing and interoperability requirements.
FAQ
What is the operating temperature range specified for TSB14AA1APFBG4?
The TSB14AA1APFBG4 is rated for operation from 0°C to 70°C. This commercial temperature grade is confirmed in TI's Packaging Information Addendum, where TSB14AA1APFBG4 is explicitly listed with "Op temp (°C): 0 to 70" and part marking "TSB14AA1AI". It is not qualified for extended ranges like the 'I' (–40°C to 85°C) or 'T' (–40°C to 105°C) variants.
Does TSB14AA1APFBG4 include an internal oscillator?
No, the TSB14AA1APFBG4 does not include an internal oscillator. It requires an external 49.152-MHz clock for S50 operation or 98.304-MHz clock for S100 operation applied to the REFCLK pin. The device uses internal dividers to generate system clocks-TI's SLLA222 datasheet explicitly states "The TSB14AA1A requires an external 98.304-MHz reference oscillator input".
Is TSB14AA1APFBG4 pin-compatible with TSB14CO1APM?
Yes, the TSB14AA1APFBG4 is software-compatible with TSB14CO1APM and shares the same 48-pin TQFP (PFB) package, pinout, and PHY-link interface timing. TI's datasheet states "Software Compatible With the TSB14CO1APM" and confirms identical package and functional mapping-making it a direct drop-in upgrade for legacy designs using the first-generation device.
What link-layer controllers are compatible with TSB14AA1APFBG4?
The TSB14AA1APFBG4 is designed to interface with TI's TSB12LV-series link-layer controllers, including TSB12LV01B, TSB12LV32, and TSB12LV21B. These devices share the same two-wire PHY_CTRL[1:0] interface, IEEE 1394a-compliant timing, and register structure-ensuring seamless interoperability without protocol translation or glue logic.
Can TSB14AA1APFBG4 drive the backplane directly?
No, the TSB14AA1APFBG4 cannot drive the backplane directly. TI's datasheet explicitly states: "The TSB14AA1A is not designed to drive the backplane directly; this function must be provided externally." Its TDATA/TSTRB and RDATA/RSTRB pins are LVCMOS-level I/O intended to interface with external 3-state or open-collector line drivers capable of backplane signaling.
TSB14AA1APFBG4 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:
- -
TSB14AA1APFBG4 FAQ
1.How can I place an order for TSB14AA1APFBG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TSB14AA1APFBG4 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 TSB14AA1APFBG4 reliable?
The price and inventory of TSB14AA1APFBG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSB14AA1APFBG4 is usually 5 days.
3.What payment methods are accepted for TSB14AA1APFBG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSB14AA1APFBG4 transactions.
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4.How is shipping managed for TSB14AA1APFBG4?
TSB14AA1APFBG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSB14AA1APFBG4 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 TSB14AA1APFBG4?
For technical support, including TSB14AA1APFBG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSB14AA1APFBG4 requirements.
6.How does Aetrix verify that TSB14AA1APFBG4 is sourced from the original manufacturer or authorized distributors?
All TSB14AA1APFBG4 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 TSB14AA1APFBG4 meets industry standards.
7.What is the process for return or replacement of TSB14AA1APFBG4?
All TSB14AA1APFBG4 units undergo pre-shipment inspection (PSI). If there is an issue with TSB14AA1APFBG4, 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 TSB14AA1APFBG4 part is unused and in its original packaging.
Return procedure for TSB14AA1APFBG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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