Specification	TRSF3221EIRGTR

Data Rate	1 Mbps
Duplex	Full
Mounting Type	Surface Mount
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Package / Case	16-VFQFN Exposed Pad
Protocol	RS232
Receiver Hysteresis	500 mV
Supplier Device Package	16-VQFN (3x3)
Type	Transceiver
Voltage - Supply [Max]	3.6 V, 5.5 V
Voltage - Supply [Min]	4.5 V, 3 V

TRSF3221E Series

3- to 5.5-V single channel 1Mbps RS-232 line driver/receiver with +/-15-kV IEC-ESD protection

Part	Operating Temperature [Max]	Operating Temperature [Min]	Data Rate	Protocol	Package / Case [x]	Package / Case	Package / Case [y]	Duplex	Supplier Device Package	Voltage - Supply [Max]	Voltage - Supply [Min]	Type	Receiver Hysteresis	Mounting Type	Package / Case [custom]	Package / Case [custom]
Texas Instruments TRSF3221EIPW	85 °C	-40 °C	1 Mbps	RS232	0.173 in	16-TSSOP	4.4 mm	Full	16-TSSOP	5.5 V	3 V	Transceiver	500 mV	Surface Mount
Texas Instruments TRSF3221ECDB	70 °C	0 °C	1 Mbps	RS232		16-SSOP		Full	16-SSOP	5.5 V	3 V	Transceiver	500 mV	Surface Mount	0.209 in	5.3 mm
Texas Instruments TRSF3221ECDBRG4	70 °C	0 °C	1 Mbps	RS232		16-SSOP		Full	16-SSOP	5.5 V	3 V	Transceiver	500 mV	Surface Mount	0.209 in	5.3 mm
Texas Instruments TRSF3221ECDBR	70 °C	0 °C	1 Mbps	RS232		16-SSOP		Full	16-SSOP	5.5 V	3 V	Transceiver	500 mV	Surface Mount	0.209 in	5.3 mm
Texas Instruments TRSF3221EIRGTR	85 °C	-40 °C	1 Mbps	RS232		16-VFQFN Exposed Pad		Full	16-VQFN (3x3)	3.6 V 5.5 V	3 V 4.5 V	Transceiver	500 mV	Surface Mount
Texas Instruments TRSF3221ECDBG4	70 °C	0 °C	1 Mbps	RS232		16-SSOP		Full	16-SSOP	5.5 V	3 V	Transceiver	500 mV	Surface Mount	0.209 in	5.3 mm
Texas Instruments TRSF3221ECPWR	70 °C	0 °C	1 Mbps	RS232	0.173 in	16-TSSOP	4.4 mm	Full	16-TSSOP	5.5 V	3 V	Transceiver	500 mV	Surface Mount
Texas Instruments TRSF3221EIDBR	85 °C	-40 °C	1 Mbps	RS232		16-SSOP		Full	16-SSOP	5.5 V	3 V	Transceiver	500 mV	Surface Mount	0.209 in	5.3 mm
Texas Instruments TRSF3221EIPWRG4	85 °C	-40 °C	1 Mbps	RS232	0.173 in	16-TSSOP	4.4 mm	Full	16-TSSOP	5.5 V	3 V	Transceiver	500 mV	Surface Mount
Texas Instruments TRSF3221ECPW	70 °C	0 °C	1 Mbps	RS232	0.173 in	16-TSSOP	4.4 mm	Full	16-TSSOP	5.5 V	3 V	Transceiver	500 mV	Surface Mount

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 3.65
		10	$ 2.40
		25	$ 2.07
		100	$ 1.70
		250	$ 1.52
		500	$ 1.41
		1000	$ 1.32
	Digi-Reel®	1	$ 3.65
		10	$ 2.40
		25	$ 2.07
		100	$ 1.70
		250	$ 1.52
		500	$ 1.41
		1000	$ 1.32
	Tape & Reel (TR)	3000	$ 1.21
		6000	$ 1.15
Texas Instruments	LARGE T&R	1	$ 2.02
		100	$ 1.67
		250	$ 1.20
		1000	$ 0.90

Description

General part information

TRSF3221E Series

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.