Specification	TRSF3221ECDBR

Data Rate	1 Mbps
Duplex	Full
Mounting Type	Surface Mount
Operating Temperature [Max]	70 °C
Operating Temperature [Min]	0 °C
Package / Case	0.209 in, 5.3 mm
Package / Case	16-SSOP
Protocol	RS232
Receiver Hysteresis	500 mV
Supplier Device Package	16-SSOP
Type	Transceiver
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	3 V

TRSF3221 Series

Part	Duplex	Package / Case [y]	Package / Case	Package / Case [y]	Voltage - Supply [Max]	Voltage - Supply [Min]	Data Rate	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Type	Receiver Hysteresis	Mounting Type	Protocol	Package / Case
Texas Instruments TRSF3221EIPW	Full	4.4 mm	16-TSSOP	0.173 in	5.5 V	3 V	1 Mbps	16-TSSOP	85 °C	-40 C	Transceiver	500 mV	Surface Mount	RS232
Texas Instruments TRSF3221ECDB	Full		16-SSOP		5.5 V	3 V	1 Mbps	16-SSOP	70 °C	0 °C	Transceiver	500 mV	Surface Mount	RS232	0.209 in 5.3 mm
Texas Instruments TRSF3221ECDBRG4	Full		16-SSOP		5.5 V	3 V	1 Mbps	16-SSOP	70 °C	0 °C	Transceiver	500 mV	Surface Mount	RS232	0.209 in 5.3 mm
Texas Instruments TRSF3221ECDBR	Full		16-SSOP		5.5 V	3 V	1 Mbps	16-SSOP	70 °C	0 °C	Transceiver	500 mV	Surface Mount	RS232	0.209 in 5.3 mm
Texas Instruments TRSF3221ECDBG4	Full		16-SSOP		5.5 V	3 V	1 Mbps	16-SSOP	70 °C	0 °C	Transceiver	500 mV	Surface Mount	RS232	0.209 in 5.3 mm
Texas Instruments TRSF3221ECPWR	Full	4.4 mm	16-TSSOP	0.173 in	5.5 V	3 V	1 Mbps	16-TSSOP	70 °C	0 °C	Transceiver	500 mV	Surface Mount	RS232
Texas Instruments TRSF3221EIDBR	Full		16-SSOP		5.5 V	3 V	1 Mbps	16-SSOP	85 °C	-40 C	Transceiver	500 mV	Surface Mount	RS232	0.209 in 5.3 mm
Texas Instruments TRSF3221EIPWRG4	Full	4.4 mm	16-TSSOP	0.173 in	5.5 V	3 V	1 Mbps	16-TSSOP	85 °C	-40 C	Transceiver	500 mV	Surface Mount	RS232
Texas Instruments TRSF3221ECPW	Full	4.4 mm	16-TSSOP	0.173 in	5.5 V	3 V	1 Mbps	16-TSSOP	70 °C	0 °C	Transceiver	500 mV	Surface Mount	RS232
Texas Instruments TRSF3221CDBR	Full		16-SSOP		5.5 V	3 V	1 Mbps	16-SSOP	70 °C	0 °C	Transceiver	500 mV	Surface Mount	RS232	0.209 in 5.3 mm

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	$ 3.40
		10	$ 2.22
		25	$ 1.92
		100	$ 1.57
		250	$ 1.40
	Digi-Reel®	1	$ 3.40
		10	$ 2.22
		25	$ 1.92
		100	$ 1.57
		250	$ 1.40
	N/A	343	$ 2.50
	Tape & Reel (TR)	2000	$ 1.12
		6000	$ 1.08
Texas Instruments	LARGE T&R	1	$ 1.84
		100	$ 1.52
		250	$ 1.09
		1000	$ 0.82

Description

General part information

TRSF3221 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.