Startseite Schnittstelle RS-232-Transceiver

TRSF3221E

AKTIV

3- bis 5,5 V-Einkanal-RS-232-Leitungstreiber/‑Empfänger mit 1 Mbit/s und +/-15 kV-IEC-ESD-Schutz

Produktdetails

Drivers per package 1 Receivers per package 1 Logic voltage (min) (V) 3.3 Data rate (max) (Mbps) 1 Main supply voltage (nom) (V) 3.3, 5 Features Auto-Powerdown ESD HBM (kV) 15 Rating Catalog Operating temperature range (°C) -40 to 85 Vout (typ) (V) 5.4
Drivers per package 1 Receivers per package 1 Logic voltage (min) (V) 3.3 Data rate (max) (Mbps) 1 Main supply voltage (nom) (V) 3.3, 5 Features Auto-Powerdown ESD HBM (kV) 15 Rating Catalog Operating temperature range (°C) -40 to 85 Vout (typ) (V) 5.4
SSOP (DB) 16 48.36 mm² 6.2 x 7.8 TSSOP (PW) 16 32 mm² 5 x 6.4 VQFN (RGT) 16 9 mm² 3 x 3
  • ESD protection for RS-232 pins
    • ±15kV Human-body model (HBM)
    • ±8kV IEC 61000-4-2 Contact discharge
    • ±15kV IEC 61000-4-2 Air-gap discharge
  • Operates with 3V to 5.5V VCC supply
  • Operates up to 1Mbit/s
    • Low-speed pin-compatible device (250kbit/s) – TRS3221E
  • Available in near chip-scale package, 16-pin VQFN (RGT, 82% smaller than TSSOP package)
  • Low standby current: 1µA typical
  • External capacitors : 4 × 0.1µF
  • Accepts 5V logic input with 3.3V supply
  • Auto-powerdown feature automatically disables drivers for power savings
  • ESD protection for RS-232 pins
    • ±15kV Human-body model (HBM)
    • ±8kV IEC 61000-4-2 Contact discharge
    • ±15kV IEC 61000-4-2 Air-gap discharge
  • Operates with 3V to 5.5V VCC supply
  • Operates up to 1Mbit/s
    • Low-speed pin-compatible device (250kbit/s) – TRS3221E
  • Available in near chip-scale package, 16-pin VQFN (RGT, 82% smaller than TSSOP package)
  • Low standby current: 1µA typical
  • External capacitors : 4 × 0.1µF
  • Accepts 5V logic input with 3.3V supply
  • Auto-powerdown feature automatically disables drivers for power savings

The TRSF3221E consists of one line driver, one line receiver, and a dual charge-pump circuit with ±15kV IEC ESD protection pin to pin (serial-port connection pins, including GND). The TRSF3221E provides the electrical interface between an asynchronous communication controller and the serial-port connector. The charge pump and four small external capacitors allow operation from a single 3V to 5.5V supply. The TRSF3221E operates at data signaling rates up to 1Mbit/s and a driver output slew rate of 24V/µs to 150V/µs.

Flexible control options for power management are available when the serial port is inactive. The auto-powerdown feature functions when FORCEON is low and FORCEOFF is high. During this mode of operation, if the TRSF3221E does not sense a valid RS-232 signal on the receiver input, the driver output is disabled. If FORCEOFF is set low and the enable (EN) input is high, both the driver and receiver are shut off, and the supply current is reduced to 1µA. Disconnecting the serial port or turning off the peripheral drivers causes the auto-powerdown condition to occur. Auto-powerdown can be disabled when FORCEON and FORCEOFF are high. With auto-powerdown enabled, the device is activated automatically when a valid signal is applied to the receiver input. The INVALID output notifies the user if an RS-232 signal is present at the receiver input. INVALID is high (valid data) if the receiver input voltage is greater than 2.7V or less than –2.7V, or has been between –0.3V and 0.3V for less than 30µs. INVALID is low (invalid data) if the receiver input voltage is between –0.3V and 0.3V for more than 30µs. See Figure 6-5 for receiver input levels.

The TRSF3221E consists of one line driver, one line receiver, and a dual charge-pump circuit with ±15kV IEC ESD protection pin to pin (serial-port connection pins, including GND). The TRSF3221E provides the electrical interface between an asynchronous communication controller and the serial-port connector. The charge pump and four small external capacitors allow operation from a single 3V to 5.5V supply. The TRSF3221E operates at data signaling rates up to 1Mbit/s and a driver output slew rate of 24V/µs to 150V/µs.

Flexible control options for power management are available when the serial port is inactive. The auto-powerdown feature functions when FORCEON is low and FORCEOFF is high. During this mode of operation, if the TRSF3221E does not sense a valid RS-232 signal on the receiver input, the driver output is disabled. If FORCEOFF is set low and the enable (EN) input is high, both the driver and receiver are shut off, and the supply current is reduced to 1µA. Disconnecting the serial port or turning off the peripheral drivers causes the auto-powerdown condition to occur. Auto-powerdown can be disabled when FORCEON and FORCEOFF are high. With auto-powerdown enabled, the device is activated automatically when a valid signal is applied to the receiver input. The INVALID output notifies the user if an RS-232 signal is present at the receiver input. INVALID is high (valid data) if the receiver input voltage is greater than 2.7V or less than –2.7V, or has been between –0.3V and 0.3V for less than 30µs. INVALID is low (invalid data) if the receiver input voltage is between –0.3V and 0.3V for more than 30µs. See Figure 6-5 for receiver input levels.

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Typ Titel Datum
* Data sheet TRSF3221E 3V to 5.5V Single-Channel RS-232 1Mbit Line Driver and Receiver With ±15kV IEC ESD Protection in Small Package datasheet (Rev. C) PDF | HTML 10 Dez 2024
More literature RS-232 IEC ESD-Protected Devices From TI (Rev. A) 27 Jul 2007

Design und Entwicklung

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Evaluierungsplatine

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Benutzerhandbuch: PDF
Simulationsmodell

TRSF3221E IBIS Model

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Simulationstool

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Referenzdesigns

TIDA-060008 — Referenzdesign zur Umwandlung von RS-232-Signalen in RS-485-Signale

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Design guide: PDF
Schaltplan: PDF
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
SSOP (DB) 16 Ultra Librarian
TSSOP (PW) 16 Ultra Librarian
VQFN (RGT) 16 Ultra Librarian

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