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STMicroelectronics ST202EBN
- Part No.:
- ST202EBN
- Manufacturer:
- STMicroelectronics
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
ST202EBN.pdf
- Description:
- IC TRANSCEIVER FULL 2/2 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,745
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Product details
Overview
ST202EBN from STMicroelectronics is a dual-driver, dual-receiver RS-232 transceiver IC designed for EIA/TIA-232E and CCITT V.28 communication interfaces in harsh industrial environments. It operates from a single 5 V supply, delivers guaranteed 230 kbps data rate, features ±15 kV HBM ESD protection on all RS-232 I/O pins, and uses four 0.1 µF external capacitors to minimize board space and cost.
For engineers reviewing the ST202EBN datasheet, ST202EBN pinout, ST202EBN application, or ST202EBN equivalent, this device is selected for robust serial interface design where high ESD immunity, low-cost charge-pump implementation, and operation across –40 °C to +85 °C are required.
Technical Context
The ST202EBN integrates two independent RS-232 drivers and receivers with internal charge-pump voltage converters generating ±VCC-derived rails (V+ and V−) from a single 5 V input. Its transmitter slew rate is tightly controlled between 3 V/µs and 30 V/µs to reduce EMI while maintaining signal integrity over long cables.
Receiver inputs tolerate ±30 V common-mode range and feature 0.2–1 V hysteresis for noise immunity; outputs are TTL/CMOS-compatible with logic thresholds at 0.8 V (low) and 2.0 V (high), ensuring reliable interfacing with microcontrollers and UART peripherals.
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 full-speed RS-232 operation under worst-case load (3–7 kΩ, 50–1000 pF) |
| Slew Rate | 3–30 V/µs - balances EMI reduction and edge fidelity for cable lengths up to 15 m |
| ESD Protection | ±15 kV HBM on RS-232 I/O - eliminates need for external TVS diodes in most industrial enclosures |
| Operating Temp | –40 °C to +85 °C - qualified for extended industrial temperature range without derating |
| Capacitor Requirement | Four 0.1 µF - reduces BOM count and PCB area vs. 1 µF alternatives like ST232EB |
| Supply Current | 5 mA typical (no load, 25 °C) - enables low-power serial port standby modes |
Pinout & Package
ST202EBN is available in SO16 and TSSOP16 packages per ECOPACK® environmental compliance. The SO16 variant measures 10.0 × 6.0 mm with 1.27 mm pitch; TSSOP16 is 5.0 × 6.4 mm with 0.65 mm pitch. Both use standard 16-pin layout optimized for RS-232 signal routing and charge-pump capacitor placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 C1+ | Charge pump capacitor positive terminal | Connects to +ve side of first 0.1 µF flying capacitor; critical for V+ generation stability |
| 2 V+ | Doubled output voltage rail | Provides +10 V approx. for driver output swing; sourced from internal charge pump |
| 3 C1− | Charge pump capacitor negative terminal | Completes first charge-pump stage; ties to GND during switching phase |
| 4 C2+ | Second charge pump capacitor positive terminal | Feeds inverted rail generation; pairs with C2− to produce V− |
| 5 C2− | Second charge pump capacitor negative terminal | Reference node for V− generation; alternates polarity with C2+ |
| 6 V− | Inverted output voltage rail | Provides –10 V approx. for driver output swing; enables true RS-232 ±5 V to ±9 V swing |
| 7 T2OUT | Second transmitter output | RS-232 level output (±5 V to ±9 V); drives DTE/DCE interface lines such as RTS or CTS |
| 8 R2IN | Second receiver input | Accepts RS-232 input signals (±30 V tolerant); connects to DTE/DCE receive lines like RXD |
| 9 R2OUT | Second receiver output | TTL/CMOS logic-level output (0.4 V low / 3.5 V high); interfaces directly to UART RX pin |
| 10 T2IN | Second transmitter input | TTL/CMOS logic-level input; accepts UART TX output (0–5 V) to convert to RS-232 levels |
| 11 T1IN | First transmitter input | Primary UART TX input channel; electrically identical to T2IN with same logic thresholds |
| 12 R1OUT | First receiver output | Primary UART RX output channel; matches R2OUT timing and drive strength |
| 13 R1IN | First receiver input | Primary RS-232 receive input (e.g., connected to remote TXD line); includes 0.5 V hysteresis |
| 14 T1OUT | First transmitter output | Primary RS-232 transmit output (e.g., drives remote RXD line); meets EIA/TIA-232E spec |
| 15 GND | Analog/digital ground reference | Common return for all internal circuitry and external capacitors; must be low-impedance plane |
| 16 VCC | Positive supply input | 5 V power source; powers internal logic, charge pumps, and output stages |
Key Features
| Feature | Design Value |
|---|---|
| ±15 kV HBM ESD protection | Eliminates external ESD protection components on RS-232 I/O lines, reducing BOM and layout complexity |
| Guaranteed 230 kbps data rate | Ensures interoperability with legacy and modern RS-232 equipment without handshake or throttling |
| 3–30 V/µs slew rate control | Prevents signal overshoot/ringing on long cables while meeting rise/fall time requirements |
| Single 5 V supply operation | Removes need for ±12 V supplies, simplifying power architecture in embedded and portable systems |
| 0.1 µF capacitor support | Reduces total capacitance footprint by 90% vs. 1 µF solutions, enabling compact PCB designs |
Applications
| Industrial PLC Serial Port | Medical Device Interface Module |
|---|---|
|
Use Scenario: Bidirectional RS-232 communication between PLC CPU and HMI panel in factory-floor cabinets subject to electrostatic discharge and conducted noise. IC Role / Device Role / Timing Role: Translates TTL UART signals from microcontroller to full RS-232 voltage levels while providing ±15 kV ESD hardening on exposed connectors. Use Value: Enables reliable operation without external TVS diodes or level-shifting ICs, reducing failure rates in dusty, high-static environments. |
Use Scenario: Connecting diagnostic equipment (e.g., ECG monitor) to PC-based analysis software via DB9 cable in clinical settings. IC Role / Device Role / Timing Role: Provides isolated, low-noise RS-232 interface with strict EMI control and wide input voltage tolerance (±30 V). Use Value: Maintains data integrity during frequent cable hot-plug events and prevents latch-up from accidental miswiring. |
| Point-of-Sale Terminal | Ruggedized Handheld Scanner |
|
Use Scenario: Interfacing thermal receipt printer and barcode scanner to embedded ARM-based POS controller in retail environments. IC Role / Device Role / Timing Role: Dual-channel transceiver handling simultaneous TX/RX paths for printer control and scanner feedback with minimal latency. Use Value: Guarantees 230 kbps throughput for fast receipt printing and real-time scan confirmation, even with long ribbon cables. |
Use Scenario: Enabling RS-232 debug and firmware update ports on battery-powered handheld scanners used in warehouses. IC Role / Device Role / Timing Role: Low-quiescent-current (5 mA typ.) transceiver supporting USB-to-RS-232 adapter compatibility during field updates. Use Value: Extends battery life during maintenance windows and withstands repeated static discharge from operator handling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RS-232 transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX3232ESE+ | Uses four 0.1 µF capacitors; ±15 kV HBM; 250 kbps max (not guaranteed); higher supply current (1 mA typ. quiescent) | Widely used in commercial-grade equipment; less thermal margin at 85 °C ambient | Select when legacy MAXIM footprint compatibility is required and 230 kbps guarantee is not mandatory |
| SP3232EEN-L | Same 0.1 µF cap requirement; ±15 kV HBM; 250 kbps (guaranteed only at 25 °C); SO16-only packaging | Limited to 0–70 °C operation; no TSSOP16 option; lower ESD margin on air discharge (±8 kV) | Choose for cost-sensitive consumer applications where extended temperature range is unnecessary |
Compared with MAX3232ESE+ and SP3232EEN-L, the ST202EBN uniquely guarantees 230 kbps across –40 °C to +85 °C while maintaining 5 mA typical supply current and offering both SO16 and TSSOP16 variants - making it optimal for industrial deployments requiring full-spec performance over temperature.
Availability
ST202EBN is available at Aetrix Electronics and suitable for industrial PLC serial ports, medical device interface modules, and ruggedized handheld scanners requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ST202EBN 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, MCU, power, and sensor solutions for automotive, industrial, and consumer markets.
The ST202EBN belongs to ST's RS-232 transceiver product line, engineered specifically for robust serial communication in electrically noisy, ESD-prone industrial and medical environments where reliability trumps lowest-cost implementation.
FAQ
What is the minimum and maximum operating temperature range for ST202EBN?
The ST202EBN is rated for operation from –40 °C to +85 °C. This extended industrial temperature range is fully specified in the datasheet for all electrical characteristics including data rate, ESD performance, and supply current. No derating is required within this range, and thermal resistance values (Rthja = 115 °C/W for SO16 on 1-layer board) support reliable thermal design.
Can ST202EBN replace MAX232 in existing designs?
Yes, ST202EBN is a functional and pin-compatible replacement for MAX232 when using 0.1 µF capacitors. It provides identical pinout, same 5 V supply operation, and enhanced ±15 kV HBM ESD protection versus MAX232's ±10 kV. However, verify that the host system's layout accommodates ST202EBN's slightly different charge-pump timing and propagation delays (tDT = 2 µs typ., tDR = 0.5–10 µs).
Does ST202EBN require external voltage regulators or LDOs?
No. ST202EBN operates directly from a clean 5 V ±10% supply and generates its own ±10 V RS-232 voltage rails internally using integrated charge pumps. An external 5 V regulator is sufficient; no additional ±12 V supplies or post-regulation circuitry is needed. Ensure VCC bypassing with ≥1 µF ceramic capacitor near Pin 16.
How does the slew rate control benefit system-level EMI performance?
The guaranteed 3–30 V/µs slew rate limits high-frequency spectral content in RS-232 edge transitions, reducing radiated emissions by up to 10 dB compared to uncontrolled fast edges. This allows ST202EBN-based designs to pass CISPR 22 Class B emissions testing without ferrite beads or shielding, especially critical in compact enclosures with shared ground planes.
ST202EBN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- Through Hole
- Supplier Device Package:
- 16-DIP
ST202EBN FAQ
1.How can I place an order for ST202EBN through Aetrix?
Please submit a Request for Quotation (RFQ) for ST202EBN 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 ST202EBN reliable?
The price and inventory of ST202EBN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST202EBN is usually 5 days.
3.What payment methods are accepted for ST202EBN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST202EBN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST202EBN?
ST202EBN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST202EBN 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 ST202EBN?
For technical support, including ST202EBN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST202EBN requirements.
6.How does Aetrix verify that ST202EBN is sourced from the original manufacturer or authorized distributors?
All ST202EBN 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 ST202EBN meets industry standards.
7.What is the process for return or replacement of ST202EBN?
All ST202EBN units undergo pre-shipment inspection (PSI). If there is an issue with ST202EBN, 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 ST202EBN part is unused and in its original packaging.
Return procedure for ST202EBN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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