TRS3232EIRGT - Dual RS-232 Transceiver, ±15kV ESD | TI
Teilenummer: TRS3232EIRGT ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $1.4 | $1,40 |
| 10 | $1.3 | $13,00 |
| 100 | $1.26 | $126,00 |
| 500 | $1.1 | $550,00 |
| 1.000 | $0.95 | $950,00 |
TRS3232EIRGT Übersicht
An RS-232 line driver/receiver is an interface IC that converts logic-level UART signals (TTL/CMOS, typically 0V to 3.3V or 5V) into the voltage-swing-compliant RS-232 levels required by serial-port connectors, and vice versa. It sits within the interface IC hierarchy of transceivers, alongside CAN, RS-485, and LVDS transceivers, and forms the electrical bridge between an asynchronous communication controller and the physical serial connector.
Key features include two drivers and two receivers for full-duplex communication, a dual charge-pump circuit that generates RS-232 compliant voltage swings from a single 3V to 5.5V supply with only four small 0.1uF external capacitors, ±15kV IEC ESD protection pin to pin (including GND), and conformance to TIA/EIA-232-F. The 250 kbps data rate comfortably covers standard UART baud rates up to 250 kbaud.
Technically, the device integrates an efficient regulated charge-pump inverter and doubler, so the driver outputs swing to the RS-232 defined levels even at a 3.3V supply. Receiver inputs tolerate up to ±30V, providing robustness against fault conditions. ESD structures rated to ±15kV (HBM and IEC air-gap) protect bus pins against electrostatic discharge events in field environments.
Typical applications include industrial PLC and factory-automation serial links, point-of-sale terminals and barcode scanners, and legacy/debug UART ports on networking and embedded processor boards. The small VQFN-16 footprint suits space-constrained designs where an SOIC-16 is too large.
Design consideration: ensure the four charge-pump flying capacitors and both supply bypass capacitors (0.1uF) are placed as close to the pins as possible; exceeding the 5.5V supply or omitting capacitors degrades signal swing and ESD robustness.
This page synthesizes distributor pricing, package/pinout detail, drop-in alternative guidance, and practical design notes beyond what the manufacturer datasheet provides, with pricing as of 2026-10-20.
Drop-in-Alternativen für TRS3232EIRGT – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
Für dieses Produkt sind keine Drop-in-Alternativen verfügbar.
Alternativen anfordernTRS3232EIRGT Technische Daten
| Funktion | RS-232 Line Driver and Receiver (Transceiver) |
| Number of Drivers | 2 |
| Number of Receivers | 2 |
| Supply Voltage Range | 3 V to 5.5 V |
| Datenrate | 250 kbps |
| ESD Protection | ±15 kV IEC ESD (bus pins, pin to pin including GND) |
| Protocol Compliance | TIA/EIA-232-F |
| Gehäuse | 16-pin VQFN (RGT), 3x3 mm |
| Montageart | Surface Mount |
| External Capacitors | 4 x charge pump + 2 x bypass (0.1 uF typical) |
| Duplex Mode | Full Duplex |
| Evaluation Module | TRS3232RGTEVM |
| Manufacturer | Texas Instruments |
TRS3232EIRGT Pin-Konfiguration
| Pin 1 | C1+ — Charge-pump capacitor 1 positive terminal |
| Pin 2 | VCC — Supply voltage, 3 V to 5.5 V |
| Pin 3 | C1- — Charge-pump capacitor 1 negative terminal |
| Pin 4 | V+ — Charge-pump positive output (doubler) |
| Pin 5 | C2+ — Charge-pump capacitor 2 positive terminal |
| Pin 6 | C2- — Charge-pump capacitor 2 negative terminal |
| Pin 7 | V- — Charge-pump negative output (inverter) |
| Pin 8 | T2OUT — RS-232 driver 2 output |
| Pin 9 | R2IN — RS-232 receiver 2 input |
| Pin 10 | R2OUT — Receiver 2 logic-level output |
| Pin 11 | T2IN — Driver 2 logic-level input |
| Pin 12 | T1IN — Driver 1 logic-level input |
| Pin 13 | R1OUT — Receiver 1 logic-level output |
| Pin 14 | R1IN — RS-232 receiver 1 input |
| Pin 15 | T1OUT — RS-232 driver 1 output |
| Pin 16 | GND — Ground |
Typische Anwendungen
TRS3232EIRGT ist geeignet für 6 Anwendungs: Industrial PLC and Factory Automation Serial Links, Point-of-Sale Terminals and Barcode Scanners, Embedded Processor Debug and Console UART Ports, Networking Equipment and Telecom Management Ports, Battery-Powered Instrumentation and Data Loggers, Medical Device Service and Calibration Interfaces.
Industrial PLC and Factory Automation Serial Links
Industrial controllers frequently retain RS-232 ports for HMI panels, barcode readers, drives, and legacy field devices. The TRS3232EIRGT fits this role because its 3V to 5.5V supply matches modern 3.3V MCU rails, while its ±15kV IEC ESD protection protects bus pins from discharge events common on factory-floor connectors. Its 250 kbps rate supports fast program downloads and telemetry above the legacy 115.2 kbaud ceiling. In a typical link, T1IN/R1OUT connect to the MCU UART, and T1OUT/R1IN wire to the DB9 connector through the charge-pump-generated RS-232 swings. The VQFN-16 (3x3 mm) package keeps the interface block compact on dense control boards.
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Point-of-Sale Terminals and Barcode Scanners
POS terminals, receipt printers, and handheld scanners still expose RS-232 serial ports that customers and service technicians physically connect to, making ESD robustness a primary requirement. The TRS3232EIRGT addresses this with ±15kV IEC ESD protection applied pin to pin including GND, per the TI datasheet, plus ±15kV HBM bus-pin protection. Its single 3V to 5.5V supply directly interfaces with battery-operated or 3.3V logic boards, and the integrated charge pump eliminates any negative supply, reducing component count in cost-sensitive retail hardware. The 250 kbps data rate accommodates high-speed receipt and label printing. Compact 3x3 mm VQFN packaging fits slim handheld enclosures.
Empfohlen
Embedded Processor Debug and Console UART Ports
Development and production boards for microcontrollers and SoCs commonly route one UART to an RS-232 console for boot logs and diagnostics. The TRS3232EIRGT is well suited because its two drivers and two receivers support full-duplex TX/RX with optional RTS/CTS flow control on the second channel. Running from the board's 3.3V rail, its charge pump produces compliant RS-232 swings using only four 0.1uF capacitors, so the debug circuitry adds minimal BOM cost. The 250 kbps capability accelerates log streaming versus 115.2 kbaud consoles. Integration on the small VQFN-16 footprint keeps debug circuitry off the critical routing area of dense CPU boards.
Empfohlen
Networking Equipment and Telecom Management Ports
Switches, routers, and telecom shelves provide RS-232 craft ports for configuration and diagnostics. The TRS3232EIRGT serves these ports with TIA/EIA-232-F compliant signaling from a single 3V to 5.5V supply, avoiding a dedicated negative rail. Its ±15kV IEC ESD protection on serial pins guards against discharge when technicians plug in management cables, a frequent event in rack environments. The dual-channel arrangement supports console plus modem-control signaling (RTS/CTS or DTR/DSR) on one chip. The 250 kbps rate is ample for CLI traffic, and the 3x3 mm VQFN-16 package suits high-density line-card layouts where board space is at a premium.
Empfohlen
Battery-Powered Instrumentation and Data Loggers
Portable instruments, data loggers, and environmental sensors often communicate over RS-232 to legacy loggers or laptops. The TRS3232EIRGT operates from a single 3V to 5.5V supply, directly compatible with lithium-ion or 3.3V regulated rails, and its charge-pump architecture means no inductor or negative regulator is needed, minimizing quiescent board area and height for handheld products. ESD structures rated ±15kV IEC protect the external connector during field handling. The 250 kbps capability permits fast data offload from logger memory. Using the compact VQFN-16 (RGT) package, designers can retain an RS-232 port even on space-limited portable PCBs without a larger SOIC footprint.
Empfohlen
Medical Device Service and Calibration Interfaces
Medical equipment such as patient monitors and infusion systems commonly include RS-232 service ports for calibration, firmware updates, and integration with legacy hospital systems. The TRS3232EIRGT provides the electrical interface between the device UART and the serial connector in compliance with TIA/EIA-232-F, from a single 3V to 5.5V supply. The ±15kV IEC ESD protection on serial pins, applied pin to pin including GND, helps the port survive repeated cable connect/disconnect in clinical environments. The dual channel supports full-duplex data with hardware flow control. Its 3x3 mm VQFN-16 package allows the service interface to coexist with isolation and analog front-end circuitry on crowded boards.
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Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für TRS3232EIRGT – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | TRS3232EIDR | MAX3232E |
|---|---|---|---|
| Package | 16-pin VQFN (RGT) 3x3 mm | SOIC-16 (D) | various (verify per ordering code) |
| Brand | Texas Instruments | Texas Instruments | Analog Devices (Maxim) |
| Supply Voltage Range | 3 V to 5.5 V | 3 V to 5.5 V | 3 V to 5.5 V |
| ESD Protection | ±15 kV IEC | ±15 kV IEC | ±15 kV IEC |
| Drivers / Receivers | 2 / 2 | 2 / 2 | 2 / 2 |
Wichtigste Unterscheidungsmerkmale
- Compact 3x3 mm VQFN-16 footprint (vs. TRS3232EIDR)
- Integrated ±15kV IEC ESD protection on serial pins (vs. basic commodity RS-232 transceivers)
- Single-supply operation with integrated dual charge pump (vs. MAX3232E)
Designhinweise
Place the four charge-pump capacitors (C1 fly, C2 fly, V+ and V- reservoirs, typically 0.1uF each per the TI TRS3232E datasheet) as close as possible to pins 1/3, 5/6, 4, and 7. Use short, wide traces to minimize ESR effects, since excessive series resistance degrades the V+/V- rails and reduces driver output swing, especially at 3.3V supplies. Add 0.1uF bypassing directly at VCC (pin 2) and place the VQFN thermal-connect GND (pin 16) on a solid ground plane via multiple vias.
Route the RS-232 bus pins (T1OUT, T2OUT, R1IN, R2IN) as a loosely coupled pair away from clock lines; RS-232 edges are slow compared to modern logic, but long cable stubs can radiate. Keep RIN lines short on the PCB because they carry the ESD-strike-prone connector-side signals - the ±15kV IEC protection is on-chip, but series resistance in traces adds robustness margin. The 250 kbps limit assumes standard capacitive loading; very long cables may require lower baud rates.
Do not exceed the 5.5V absolute supply maximum - the charge-pump rails V+ and V- track VCC and overstress the driver stages. Omitting any of the four charge-pump capacitors will prevent proper RS-232 level generation. When using only one channel, follow the datasheet guidance for terminating unused inputs (tie TIN inputs to a defined logic level) rather than floating them, which can cause increased supply current and uncontrolled outputs.
Estimated: charge-pump output current ripple concentrates near switching edges, so size the VCC bypass network (0.1uF ceramic plus bulk capacitance as needed) to limit supply droop when both drivers switch capacitive cable loads simultaneously. At a 3.3V supply the V+/V- rails have less headroom than at 5V; if marginal RS-232 swing is observed at 3.3V, verify capacitor ESR first before investigating the IC.
Compliance-Informationen
Compliance statuses were not stated in the provided web data; confirm on the TI product quality page for TRS3232E. TI products are typically RoHS compliant - verify before relying on this.
