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STMicroelectronics ST202EBDR
- Part No.:
- ST202EBDR
- Manufacturer:
- STMicroelectronics
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ST202EBDR.pdf
- Description:
- IC TRANSCEIVER FULL 2/2 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,456
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Product details
Overview
ST202EBDR from STMicroelectronics is a dual-transmitter/dual-receiver RS-232 transceiver IC operating from a single 5 V supply, featuring ±15 kV HBM ESD protection on all RS-232 I/O pins, guaranteed 230 kbps data rate, and 3–30 V/µs slew rate control for noise-immune serial communication in industrial control panels and point-of-sale terminals.
For engineers reviewing the ST202EBDR datasheet, ST202EBDR pinout, ST202EBDR application, or ST202EBDR equivalent, this device supports robust RS-232 interface design with low-cost 0.1 µF charge-pump capacitors, wide temperature operation (–40 to +85 °C), and SO16 package compatibility for legacy board layouts and ESD-critical environments.
Technical Context
The ST202EBDR implements two independent RS-232 drivers and receivers using charge-pump voltage conversion to generate ±9 V output swings from 5 V input, meeting EIA/TIA-232E and CCITT V.28 specifications. Its internal architecture includes TTL/CMOS-compatible logic interfaces and rail-to-rail receiver input tolerance (±30 V).
It delivers controlled slew rate (3–30 V/µs) to reduce electromagnetic interference while maintaining signal integrity at up to 230 kbps under 3–7 kΩ load and 50–1000 pF capacitance conditions, with propagation delays under 2 µs for transmitters and 10 µs for receivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 5 V ±10% - enables direct connection to standard logic rails without auxiliary supplies |
| Data Rate | 230 kbps guaranteed - supports high-speed serial links in industrial telemetry and diagnostic tools |
| Slew Rate | 3–30 V/µs - adjustable edge control minimizes crosstalk and radiated emissions on shared PCB traces |
| ESD Protection | ±15 kV HBM on RS-232 I/O - eliminates need for external TVS diodes in field-deployed equipment |
| Output Swing | ±5 V to ±9 V - meets RS-232 voltage compliance across full temperature range (–40 to +85 °C) |
| Capacitor Requirement | Four 0.1 µF - reduces BOM cost and footprint vs. 1 µF alternatives like ST232EBDR |
| Supply Current | 5 mA typical at 25 °C - enables low-power operation in battery-backed or energy-constrained systems |
Pinout & Package
ST202EBDR is housed in a 16-pin SOIC (SO16) package with 1.27 mm pitch, RoHS-compliant and ECOPACK® certified, suitable for reflow soldering and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 C1+ | Charge pump capacitor positive terminal | Connects to 0.1 µF capacitor for voltage doubling stage; critical for stable +10 V rail generation |
| 2 V+ | Doubled voltage output | Provides +10 V supply to transmitter outputs; must be decoupled to GND |
| 3 C1− | Charge pump capacitor negative terminal | Completes first charge-pump loop; ties to GND for polarity inversion |
| 4 C2+ | Second charge pump capacitor positive terminal | Connects to 0.1 µF capacitor for voltage inversion stage |
| 5 C2− | Second charge pump capacitor negative terminal | Completes second charge-pump loop; referenced to V+ for −10 V generation |
| 6 V− | Inverted voltage output | Provides −10 V supply to transmitter outputs; requires local decoupling |
| 7 T2OUT | Second transmitter output | RS-232 compliant differential output driving DB9 or terminal block connections |
| 8 R2IN | Second receiver input | Accepts ±30 V RS-232 input signals; integrated hysteresis prevents false triggering |
| 9 R2OUT | Second receiver output | TTL/CMOS logic-level output (0.4 V low / 3.5 V high) compatible with microcontroller UART inputs |
| 10 T2IN | Second transmitter input | Accepts 0–5 V logic signals; 10 µA max input leakage ensures clean level translation |
| 11 T1IN | First transmitter input | Primary UART TX input path; identical electrical behavior to T2IN |
| 12 R1OUT | First receiver output | Primary UART RX output path; drives MCU GPIO with 3.2 mA sink capability |
| 13 R1IN | First receiver input | Primary RS-232 receive channel; 3–7 kΩ input resistance matches standard cable impedance |
| 14 T1OUT | First transmitter output | Primary RS-232 transmit channel; ±9 V swing ensures noise margin over long cables |
| 15 GND | Analog and digital ground reference | Single-point return for charge pumps, logic, and RS-232 I/O; must be low-impedance |
| 16 VCC | 5 V power supply input | Supplies internal logic and charge-pump controller; requires 100 nF ceramic bypass near pin |
Key Features
| Feature | Design Value |
|---|---|
| ±15 kV HBM ESD protection | Eliminates external protection components on RS-232 ports, reducing BOM count and PCB area by ≥3 parts per channel |
| 0.1 µF capacitor support | Lowers total passive cost by >60% versus 1 µF-based alternatives and shrinks required board space by 75% |
| Guaranteed 230 kbps operation | Enables real-time diagnostics and firmware updates over RS-232 without protocol throttling or retry overhead |
| 3–30 V/µs slew rate control | Allows system-level EMI tuning: slower edges for noisy factory floors, faster edges for short-board interconnects |
| –40 to +85 °C operating range | Validates use in uncontrolled industrial enclosures, outdoor kiosks, and transportation-mounted control units |
Applications
| Industrial PLC Serial Interface | Medical Device Diagnostic Port |
|---|---|
|
Use Scenario: Connecting programmable logic controllers to HMI panels via RS-232 cables in electrically noisy factory environments. IC Role / Device Role / Timing Role: Translates 5 V UART signals to ±9 V RS-232 levels while rejecting ESD events from operator touch and relay switching transients. Use Value: Enables reliable firmware upload and real-time sensor data logging without external protection circuitry or level-shifter ICs. |
Use Scenario: Providing isolated RS-232 connectivity between patient monitors and central nursing station PCs. IC Role / Device Role / Timing Role: Acts as bidirectional physical layer translator with fail-safe receiver thresholds and low propagation delay for time-critical alarm forwarding. Use Value: Maintains regulatory-compliant signal integrity and ESD immunity (IEC 61000-4-2 Level 4) without adding isolation barriers. |
| Retail Point-of-Sale Terminal | Test & Measurement Equipment |
|
Use Scenario: Interfacing barcode scanners and receipt printers to embedded ARM-based POS controllers in retail stores. IC Role / Device Role / Timing Role: Provides dual-channel RS-232 I/O with 0.1 µF capacitor optimization to minimize bill-of-materials cost and thermal footprint. Use Value: Reduces component count and assembly cost while sustaining 230 kbps throughput for rapid transaction processing. |
Use Scenario: Enabling PC-based configuration and data capture from benchtop oscilloscopes and multimeters via RS-232. IC Role / Device Role / Timing Role: Serves as robust physical interface with ±30 V input tolerance to survive accidental miswiring during lab setup. Use Value: Guarantees interoperability with legacy test gear and eliminates field returns due to port damage from static discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RS-232 transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX232CPE | Requires four 1 µF capacitors; no guaranteed 230 kbps rating; ±15 kV ESD not specified | Higher BOM cost and larger footprint; limited to commercial temperature range (0 to +70 °C) | Select when legacy MAX232 footprint compatibility is mandatory and ESD robustness is secondary |
| SP3222EBCY-L | 3.3 V or 5 V operation; lower 1 µA supply current; ±15 kV IEC 61000-4-2 contact discharge | Supports mixed-voltage systems; tighter ESD spec but higher unit cost and TSSOP-only packaging | Select for new designs requiring ultra-low power or IEC-standard ESD compliance beyond HBM |
Compared with MAX232CPE and SP3222EBCY-L, ST202EBDR uniquely balances industrial temperature range, 0.1 µF capacitor economy, guaranteed 230 kbps performance, and ±15 kV HBM protection - making it optimal for cost-sensitive, field-deployed RS-232 nodes where reliability and footprint matter.
Availability
ST202EBDR is available at Aetrix Electronics and suitable for industrial automation gateways, medical diagnostic peripherals, and retail point-of-sale terminals requiring stable component supply, long-lifecycle support, and consistent SO16 tape-and-reel delivery.
Supply support for ST202EBDR 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, mixed-signal, power, and microcontroller solutions for industrial, automotive, and consumer markets.
The ST202EBDR belongs to ST's RS-232 interface product line, engineered specifically for ruggedized serial communication in harsh environments where ESD resilience, wide temperature operation, and minimal external component count are critical design requirements.
FAQ
What is the minimum and maximum operating temperature for ST202EBDR?
The ST202EBDR is rated for continuous operation from –40 °C to +85 °C. This extended industrial temperature range is validated per datasheet Table 13 and applies to all electrical characteristics including data rate, slew rate, and ESD performance. Operation outside this range may cause parametric shift or functional failure.
Can ST202EBDR be used with 3.3 V logic systems?
No - ST202EBDR requires a 5 V ±10% supply (VCC = 4.5–5.5 V) and accepts only TTL/CMOS input levels referenced to that 5 V rail. Its transmitter inputs (T1IN/T2IN) have logic thresholds of 0.8 V (low) and 2.0 V (high), incompatible with 3.3 V systems without level-shifting circuitry.
What is the purpose of pins C1+, C1−, C2+, and C2−?
These four pins form two independent charge-pump networks: C1+/C1− generates +10 V (V+) from VCC, and C2+/C2− generates –10 V (V−) from V+. They enable RS-232 voltage compliance using only 0.1 µF external capacitors, eliminating need for ±12 V supplies or larger 1 µF components.
Is ST202EBDR pin-compatible with ST232EBDR?
Yes - both devices share identical SO16 pinout, electrical interface, and functional block diagram. The key difference is capacitor value: ST202EBDR uses 0.1 µF, while ST232EBDR requires 1 µF. Substituting one for the other without capacitor change will cause voltage regulation failure and loss of RS-232 compliance.
ST202EBDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Transceiver
- Protocol:
- RS232
- Number of Drivers/Receivers:
- 2/2
- Duplex:
- Full
- Receiver Hysteresis:
- 500 mV
- Data Rate:
- 230kbps
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
ST202EBDR FAQ
1.How can I place an order for ST202EBDR through Aetrix?
Please submit a Request for Quotation (RFQ) for ST202EBDR 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 ST202EBDR reliable?
The price and inventory of ST202EBDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST202EBDR is usually 5 days.
3.What payment methods are accepted for ST202EBDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST202EBDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST202EBDR?
ST202EBDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST202EBDR 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 ST202EBDR?
For technical support, including ST202EBDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST202EBDR requirements.
6.How does Aetrix verify that ST202EBDR is sourced from the original manufacturer or authorized distributors?
All ST202EBDR 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 ST202EBDR meets industry standards.
7.What is the process for return or replacement of ST202EBDR?
All ST202EBDR units undergo pre-shipment inspection (PSI). If there is an issue with ST202EBDR, 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 ST202EBDR part is unused and in its original packaging.
Return procedure for ST202EBDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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