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Texas Instruments TSLM1100
- Part No.:
- TSLM1100
- Manufacturer:
- Texas Instruments
- Category:
- Telecom
- Package:
- -
- Datasheet:
-
TSLM1100.pdf
- Description:
- TELECOM CIRCUIT, 1-FUNC, PSIP8
- Quantity:
- Payment:
- Shipping:
Inventory:41,200
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Product details
Overview
TSLM1100 from Texas Instruments is an IrDA 1.1–compliant infrared transceiver integrating an 870-nm AIGaAs LED, silicon PIN photodiode, and LinCMOS transceiver IC. It supports dual-channel serial IR communication at 2.4 kb/s–115.2 kb/s (RXD-A) and 576 kb/s–4 Mb/s (RXD-B), with ±15° receiver viewing angle and ±30° transmitter beam angle, used in PC notebooks, PDAs, and industrial handheld devices.
For engineers reviewing the TSLM1100 datasheet, TSLM1100 pinout, TSLM1100 application, or TSLM1100 equivalent, key selection considerations include its dual-speed receiver outputs, visible-light-rejecting plastic SRA package, IrDA/ASK/HP-SIR/TV Remote compatibility, and required external capacitors CX1/CX5 placement within 0.7 cm for noise immunity.
Technical Context
The TSLM1100 implements a hybrid optoelectronic architecture: the LED driver stage delivers up to 660 mA peak current with 125 ns pulse width at 2 Mbps, while the receiver uses adaptive threshold and squelch circuitry to maintain sensitivity across ambient light conditions. Its dual-output structure (RXD-A/RXD-B) enables automatic speed selection without programming.
Optical performance is defined by 100–177 mW/sr radiant intensity at 450 mA drive, 875 nm peak emission, and 35 nm spectral half-width. Electrical operation requires VCC = 4.75–5.25 V, with receiver latency ≤0.5 ms and supply current ranging from 3–18 mA depending on idle/active state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IrDA Compliance | Fully compliant with IrDA 1.1 physical layer (4 Mbps max), backward compatible to slower speeds |
| Receiver Data Rates | RXD-A: 2.4 kb/s–115.2 kb/s; RXD-B: 576 kb/s–4 Mb/s - enables dual-speed interface without firmware reconfiguration |
| Transmitter Output | 870-nm AIGaAs LED with 100–177 mW/sr radiant intensity at 450 mA, ±30° beam angle |
| Receiver Sensitivity | Logic high irradiance threshold: 3.6 µW/cm² (RXD-A), 9 µW/cm² (RXD-B); effective detector area = 0.2 cm² |
| Supply & Power | VCC = 4.75–5.25 V; ICC1 (idle) = 3–5.1 mA; ICC2 (active receiver) = 4–18 mA |
| Package | SRA (plastic small-outline, 10-pin), visible-light-rejecting encapsulant with integral lenses |
| Thermal Range | Operating temperature: 0°C to 70°C; case-to-ambient thermal resistance ≤50°C/W |
Pinout & Package
The TSLM1100 is housed in an SRA (R-PSIP-T8) 10-pin plastic small-outline package with integral optical lenses for both LED and PIN diode. The package provides visible-light rejection and mechanical alignment optimized for cosmetic window integration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CX1 | Photodiode bypass capacitor connection | Must be placed ≤0.7 cm from device for optimal noise immunity; recommended value: 0.47 µF X7R ceramic |
| GNDA | Analog ground reference | Separate analog ground node for photodiode signal integrity; isolated from digital GND |
| CX4 | Averaging capacitor | Stabilizes receiver DC operating point; recommended value: 0.010 µF X7R ceramic |
| VCC | Positive supply voltage | 4.75–5.25 V supply; requires local filtering to minimize switching noise coupling into receiver path |
| RXD-B | High-speed receiver output | Active-low logic output for data rates ≥576 kb/s; pulse width 75–185 ns |
| GND | Digital ground reference | Common return for TXD, RXD-A/B logic signals; must be connected to system digital ground plane |
| TXD | Transmitter data input | CMOS-compatible input (VIH ≥4.25 V, VIL ≤0.3 V); drives internal LED driver stage |
| RXD-A | Low-speed receiver output | Active-low logic output for data rates ≤115.2 kb/s; pulse width 1–7.5 µs |
| CX3 | Threshold capacitor | Controls adaptive squelch threshold; recommended value: 4700 pF X7R ceramic |
| LEDA | LED anode terminal | Accepts pulsed current up to 660 mA (≤90 µs, ≤25% duty cycle); forward voltage ≈2.78 V at 400 mA |
Key Features
| Feature | Design Value |
|---|---|
| No programming required for speed switching | Hardware-selectable dual-speed operation via RXD-A/RXD-B outputs eliminates firmware overhead and configuration delays |
| Integral optical lenses | Receiver lens increases effective PIN diode area to 0.2 cm²; LED lens shapes ±30° beam for reliable link alignment |
| Visible-light rejection | Plastic encapsulant filters ambient visible light, enabling stable operation under indoor lighting without additional shielding |
| Light-loss compensation | Designed to maintain sensitivity through cosmetic windows (e.g., plastic bezels), reducing mechanical design constraints |
| Excellent noise immunity | Specified capacitor placement (CX1/CX5 ≤0.7 cm) and adaptive squelch ensure robust operation in electrically noisy environments |
Applications
| PC Notebook IR Interface | PDA Data Synchronization |
|---|---|
Use Scenario: Bidirectional file transfer between notebook and peripheral using IrDA-compliant protocols. IC Role / Device Role / Timing Role: Physical-layer transceiver handling modulation/demodulation of 4-Mbps IrDA signals with hardware-based speed negotiation. Use Value: Enables cable-free connectivity without host CPU intervention; dual RXD outputs simplify firmware support for legacy (SIR) and high-speed (FIR) modes. |
Use Scenario: Sync calendar/contact data between PDA and desktop via short-range IR link. IC Role / Device Role / Timing Role: Half-duplex serial IR interface with automatic fallback to 115.2-kb/s when signal quality degrades. Use Value: Maintains link reliability in variable alignment conditions; built-in ambient light rejection prevents sync failures near windows or lamps. |
| Industrial Handheld Terminal | Printer IR Control Interface |
Use Scenario: Barcode scanner data upload and firmware updates in factory floor environments. IC Role / Device Role / Timing Role: Ruggedized IR transceiver supporting ASK and HP-SIR standards for interoperability with legacy systems. Use Value: Tolerates dust, vibration, and EMI via specified capacitor layout and 50°C/W thermal resistance; no recalibration needed after window soiling. |
Use Scenario: Wireless command transmission from control panel to networked printer. IC Role / Device Role / Timing Role: Low-latency (≤0.5 ms) receiver providing immediate response to button-press commands at 576-kb/s. Use Value: Eliminates wiring complexity in kiosk-style installations; LED lens ensures consistent beam coverage across varying print-head access angles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar infrared transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay TFBS4650 | Single-output (RXD only), 4-Mbps IrDA 1.4 compliant; integrated phototransistor; no separate RXD-A/RXD-B channels | Lacks hardware speed-select capability; requires external logic or MCU polling to detect speed mode | Choose for cost-sensitive designs where firmware can manage speed negotiation and dual outputs are unnecessary |
| ROHM Semiconductor RPI-7823A | 3.3-V operation only; 1.152-Mbps max rate; smaller SMD package (4.5 × 3.2 mm); no ASK/TV Remote compatibility | Not suitable for 5-V systems or multi-standard environments requiring HP-SIR/TV Remote support | Prefer for space-constrained, low-power portable devices operating exclusively at 3.3 V and ≤1.152 Mbps |
Compared with the TSLM1100, the TFBS4650 simplifies BOM count but adds firmware complexity for speed detection, while the RPI-7823A reduces footprint and power but sacrifices voltage flexibility, speed range, and multi-standard support essential for legacy interoperability.
Availability
TSLM1100 is available at Aetrix Electronics and suitable for PC notebooks, industrial handheld terminals, and PDA synchronization systems requiring stable component supply despite its obsolete status at the manufacturer.
Supply support for TSLM1100 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 founded in 1930, specializing in analog, embedded processing, and optoelectronics solutions for industrial, automotive, and communications markets.
The TSLM1100 belongs to TI's legacy infrared transceiver product line, engineered specifically for robust, multi-standard serial IR communication in space-constrained portable electronics with minimal external component count.
FAQ
What is the maximum data rate supported by the TSLM1100?
The TSLM1100 supports two distinct data rate ranges: RXD-A handles 2.4 kb/s to 115.2 kb/s, while RXD-B supports 576 kb/s to 4.0 Mb/s. Its full IrDA 1.1 compliance confirms 4-Mbps operation, verified in the SOES034A datasheet under "Fully Compliant with IrDA 1.1 (4 MBPS)" and electrical specifications for RXD-B pulse width and rise/fall times.
Does the TSLM1100 require external programming to switch between data rates?
No, the TSLM1100 does not require external programming to switch speeds. As stated in the datasheet: "No Programming Required to Switch Speeds" and "Backward Compatible to Slower IrDA Speeds." Speed selection is handled automatically via the dual independent outputs RXD-A and RXD-B, each dedicated to a specific rate range.
What are the critical layout requirements for the TSLM1100's external capacitors?
The TSLM1100 datasheet mandates that capacitors CX1 and CX5 must be placed within 0.7 cm of the device to achieve optimum noise immunity. This requirement is explicitly called out in both the schematic notes and APPLICATION INFORMATION section, reflecting the sensitivity of the photodiode bias and averaging circuits to PCB trace inductance and EMI coupling.
Is the TSLM1100 compatible with non-IrDA infrared standards?
Yes, the TSLM1100 is explicitly compatible with ASK, HP-SIR, and TV Remote standards in addition to IrDA 1.1. The datasheet states this in the headline feature list and confirms it in the functional description: "Additionally, the TSLM1100 is compatible with ASK, HP-SIR and TV Remote standards," enabling broad interoperability beyond IrDA-only systems.
What is the optical center wavelength and spectral width of the TSLM1100's LED?
The TSLM1100's AIGaAs LED has a peak-emission wavelength (λp) of 875 nm and a spectral-line half-width (∆λ1/2) of 35 nm, as specified in the "Optical Specifications" table on page 4 of the SOES034A datasheet. These values ensure strong overlap with the 880-nm peak sensitivity of the integrated PIN photodiode.
TSLM1100 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- -
- Interface:
- -
- Number of Circuits:
- -
- Voltage - Supply:
- -
- Current - Supply:
- -
- Power (Watts):
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
TSLM1100 FAQ
1.How can I place an order for TSLM1100 through Aetrix?
Please submit a Request for Quotation (RFQ) for TSLM1100 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 TSLM1100 reliable?
The price and inventory of TSLM1100 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSLM1100 is usually 5 days.
3.What payment methods are accepted for TSLM1100?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSLM1100 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSLM1100?
TSLM1100 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSLM1100 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 TSLM1100?
For technical support, including TSLM1100 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSLM1100 requirements.
6.How does Aetrix verify that TSLM1100 is sourced from the original manufacturer or authorized distributors?
All TSLM1100 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 TSLM1100 meets industry standards.
7.What is the process for return or replacement of TSLM1100?
All TSLM1100 units undergo pre-shipment inspection (PSI). If there is an issue with TSLM1100, 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 TSLM1100 part is unused and in its original packaging.
Return procedure for TSLM1100:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TSLM1100 Tags
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