My Inquiry
My Account
STMicroelectronics ST202EBW
.jpg)
- Part No.:
- ST202EBW
- Manufacturer:
- STMicroelectronics
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ST202EBW.pdf
- Description:
- IC TRANSCEIVER FULL 2/2 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,935
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ST202EBW 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 and embedded systems.
For engineers reviewing the ST202EBW datasheet, ST202EBW pinout, ST202EBW application, or ST202EBW equivalent, this device supports robust point-to-point RS-232 links in harsh environments where ESD resilience, low-cost capacitor requirements (0.1 µF), and wide temperature operation (–40 to 85 °C) are critical selection criteria.
Technical Context
The ST202EBW integrates charge-pump voltage converters to generate ±10 V RS-232 compliant output swings from 5 V input, using four external 0.1 µF capacitors - reducing board area and BOM cost versus 1 µF alternatives. Its receiver input resistance is 3–7 kΩ with 0.2–1 V hysteresis, enabling reliable detection of noisy RS-232 signals.
Transmitter outputs deliver ±5 V to ±9 V swing into 3 kΩ loads, while TTL/CMOS logic interfaces operate at VIL ≤ 0.8 V and VIH ≥ 2.0 V. Propagation delays are specified at tDT ≤ 2 µs (transmitter) and tDR ≤ 10 µs (receiver) under standard loading conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Protection | ±15 kV HBM on RS-232 I/O pins - eliminates need for external TVS diodes in most industrial enclosures |
| Data Rate | 230 kbps guaranteed - supports full-speed RS-232 operation up to 230 kbaud with timing margin |
| Slew Rate | 3–30 V/µs adjustable via load capacitance - enables EMI optimization by limiting edge speed |
| Supply Voltage | 5 V ±10% - compatible with standard logic rails and eliminates need for auxiliary supplies |
| Operating Temp | –40 to +85 °C - qualified for extended industrial temperature range without derating |
| Capacitor Requirement | Four 0.1 µF external capacitors - reduces PCB footprint and cost vs. 1 µF solutions like ST232EB |
| Supply Current | 5 mA typical at 25 °C - enables low-power serial interface design in battery-backed or energy-constrained systems |
Pinout & Package
ST202EBW is available in SO16 and TSSOP16 packages. The SO16 variant (JEDEC MS-012) measures 10.0 × 4.0 mm with 1.27 mm pitch; TSSOP16 (JEDEC MO-153) measures 5.0 × 4.4 mm with 0.65 mm pitch. Both meet ECOPACK® environmental compliance standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 C1+ | Charge pump capacitor positive terminal | Connects to + side of first 0.1 µF flying capacitor - forms voltage doubler stage |
| 2 V+ | Doubled supply voltage output | Provides +10 V rail for transmitter outputs - enables RS-232 level generation from 5 V input |
| 3 C1− | Charge pump capacitor negative terminal | Completes first flying capacitor loop - critical for stable V+ regulation |
| 4 C2+ | Second charge pump capacitor positive terminal | Connects to + side of second 0.1 µF capacitor - forms voltage inverter stage |
| 5 C2− | Second charge pump capacitor negative terminal | Completes second flying capacitor loop - enables generation of –10 V rail (V−) |
| 6 V− | Inverted supply voltage output | Provides –10 V rail for transmitter outputs - completes bipolar RS-232 voltage swing |
| 7 T2OUT | Second transmitter output | RS-232 driver output (pin 3 of DB9 connector equivalent) - electrically isolated from logic side |
| 8 R2IN | Second receiver input | RS-232 signal input (pin 2 of DB9 connector equivalent) - accepts ±30 V input range |
| 9 R2OUT | Second receiver output | TTL/CMOS logic-level output (pin 3 of UART) - directly interfaces with microcontroller RX pin |
| 10 T2IN | Second transmitter input | TTL/CMOS logic-level input (pin 2 of UART) - accepts 0.8 V / 2.0 V logic thresholds |
| 11 T1IN | First transmitter input | TTL/CMOS logic-level input (pin 1 of UART) - supports full-duplex UART channel A |
| 12 R1OUT | First receiver output | TTL/CMOS logic-level output (pin 0 of UART) - supports full-duplex UART channel A |
| 13 R1IN | First receiver input | RS-232 signal input (pin 8 of DB9 connector equivalent) - high-impedance, hysteresis-enabled |
| 14 T1OUT | First transmitter output | RS-232 driver output (pin 2 of DB9 connector equivalent) - primary TX line for legacy port |
| 15 GND | Analog and digital ground reference | Common return path for charge pumps, drivers, and receivers - must be low-impedance plane |
| 16 VCC | Primary power supply input | 5 V ±10% input - powers internal logic, charge pumps, and level translators |
Key Features
| Feature | Design Value |
|---|---|
| Integrated charge-pump voltage converter | Generates ±10 V RS-232 levels from 5 V supply - eliminates need for dual-supply or external DC/DC |
| 0.1 µF capacitor support | Reduces total external capacitance by 90% vs. 1 µF solutions - saves PCB space and lowers BOM cost |
| Wide RS-232 input voltage range | ±30 V tolerance on R1IN/R2IN - withstands cable-induced transients and hot-plug events |
| Receiver hysteresis | 0.2–1 V input hysteresis - prevents chatter on slow-rising or noisy RS-232 signals |
| Low quiescent current | 5 mA typical supply current - extends runtime in portable or always-on serial gateways |
Applications
| Industrial PLC Serial Port | Medical Device RS-232 Interface |
|---|---|
|
Use Scenario: Connecting programmable logic controllers to HMI panels or legacy SCADA systems via shielded RS-232 cables in electrically noisy factory floors. IC Role / Device Role / Timing Role: Dual-channel RS-232 level translator providing isolated TX/RX paths with ±15 kV ESD immunity on field-side I/O pins. Use Value: Eliminates external transient suppression components and ensures reliable communication during motor drive switching events. |
Use Scenario: Enabling diagnostic port access on patient monitors and infusion pumps requiring certified ESD robustness per IEC 60601-1-2. IC Role / Device Role / Timing Role: RS-232 physical layer interface with medical-grade ESD protection and 230 kbps throughput for firmware updates and log retrieval. Use Value: Meets Clause 8.8.3.2 ESD immunity requirements without additional protection circuitry, simplifying safety certification. |
| Point-of-Sale Terminal | Automotive Diagnostic Tool |
|
Use Scenario: Interfacing thermal receipt printers and barcode scanners with embedded payment terminals in retail environments subject to frequent handling discharge. IC Role / Device Role / Timing Role: Full-duplex RS-232 transceiver managing bidirectional command/response traffic between host MCU and peripherals. Use Value: Withstands repeated human-body-model ESD events during cashier operation, preventing interface lockup or reset. |
Use Scenario: Building handheld OBD-II diagnostic adapters that connect to vehicle ECUs via RS-232-compatible protocols (e.g., ISO 9141-2). IC Role / Device Role / Timing Role: Robust physical layer interface supporting 10.4 kbps K-line and 230 kbps high-speed CAN gateway diagnostics. Use Value: Operates reliably across –40 to +85 °C ambient range and tolerates automotive load dump transients coupled onto RS-232 lines. |
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+ | Requires four 0.1 µF capacitors; ±15 kV HBM ESD; 250 kbps max data rate | Pinout differs (T1IN/T1OUT swapped); no V− pin exposed - internal charge pump only | Select when higher data rate margin is needed and board layout allows pin reassignment |
| SP3232EEN-L | Same 0.1 µF cap requirement; ±15 kV HBM; 250 kbps; lower 1 mA shutdown current | Includes EN pin for power-down mode; different pin 1 function (C1+ vs. EN) | Select when system requires software-controllable RS-232 disable to reduce standby power |
Compared with MAX3232ESE+ and SP3232EEN-L, the ST202EBW offers identical capacitor count and ESD rating but provides accessible V− for external monitoring or biasing, and fixed pinout stability across ST's RS-232 portfolio - advantageous for design reuse and long-term sourcing.
Availability
ST202EBW is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, point-of-sale hardware, and automotive test equipment requiring stable component supply, long-lifecycle availability, and guaranteed RS-232 interoperability.
Supply support for ST202EBW 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 products for industrial, automotive, and consumer markets.
The ST202EBW belongs to ST's RS-232 interface product line, engineered specifically for cost-sensitive, high-reliability serial communication in extended-temperature industrial and medical applications.
FAQ
What is the minimum required external capacitor value for ST202EBW operation?
The ST202EBW is specified and fully characterized for use with four 0.1 µF ceramic capacitors (C1+, C1−, C2+, C2−). Using smaller values risks insufficient charge pump regulation, leading to reduced output voltage swing and potential data corruption at maximum data rates.
Can ST202EBW replace ST232EB in an existing design?
Yes, ST202EBW is a direct functional replacement for ST232EB with identical pinout and electrical behavior, but uses 0.1 µF instead of 1 µF capacitors. Board redesign is required only to update capacitor footprints - no changes to routing, firmware, or timing margins are needed.
Does ST202EBW support automatic power-down or shutdown mode?
No, ST202EBW does not include an enable/shutdown pin or automatic power-down feature. It operates continuously when VCC is applied. For low-power applications, external power gating of VCC or use of alternatives like SP3232EEN-L is required.
What is the maximum recommended trace length for ST202EBW RS-232 outputs?
At 230 kbps, ST202EBW supports up to 15 m of standard 24 AWG twisted-pair RS-232 cable per EIA/TIA-232E specification. Longer runs require slew rate reduction via increased load capacitance or external termination to maintain signal integrity.
ST202EBW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tray
- 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:
- Surface Mount
- Supplier Device Package:
- 16-SO
ST202EBW FAQ
1.How can I place an order for ST202EBW through Aetrix?
Please submit a Request for Quotation (RFQ) for ST202EBW 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 ST202EBW reliable?
The price and inventory of ST202EBW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST202EBW is usually 5 days.
3.What payment methods are accepted for ST202EBW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST202EBW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST202EBW?
ST202EBW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST202EBW 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 ST202EBW?
For technical support, including ST202EBW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST202EBW requirements.
6.How does Aetrix verify that ST202EBW is sourced from the original manufacturer or authorized distributors?
All ST202EBW 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 ST202EBW meets industry standards.
7.What is the process for return or replacement of ST202EBW?
All ST202EBW units undergo pre-shipment inspection (PSI). If there is an issue with ST202EBW, 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 ST202EBW part is unused and in its original packaging.
Return procedure for ST202EBW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ST202EBW Tags
-
ATA6561-GAQW-N
Microchip Technology
-
ATA6561-GBQW-N
Microchip Technology
-
AM26LS32ACDR
Texas Instruments
-
SP485CN-L/TR
MaxLinear, Inc.
-
SP485EN-L/TR
MaxLinear, Inc.
-
SP485EEN-L/TR
MaxLinear, Inc.
-
SP485ECN-L/TR
MaxLinear, Inc.
-
THVD1400DR
Texas Instruments
-
AM26C31IDR
Texas Instruments
-
TLIN1021ADRQ1
Texas Instruments
-
MAX232IDR
Texas Instruments
-
AM26C32IDR
Texas Instruments
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
