Figure 5-1. DB or PW Package, …

MAX3221CPWR

ActiveDrivers, Receivers, TransceiversTSSOP

IC TRANSCEIVER FULL 1/1 16TSSOP

MAX3221CPWR is a 3-V to 5.5-V RS-232 line driver and receiver with ±15-kV ESD protection, supporting 250 kbps data rates in a 16-pin TSSOP package, operating from 0°C to 70°C.Checked against the datasheet

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Technical parameters

Key specs

ProtocolRS-232

Drivers/Receivers1

Data rate250 kbpsMax

Supply voltage3 ~ 5.5 V

Datasheet-verified parameters

18 items

Parameter	Value and test conditions	Source
Protocol	RS-232 (Meets or exceeds TIA/EIA-232-F and ITU V.28)
Drivers / Receivers	One driver and one receiver
Data Rate	Up to 250 kbps
Supply Voltage	3-V to 5.5-V VCC supply
Package	TSSOP (PW) (32), 16 Pins, 5.00 mm × 4.40 mm
Operating Temperature	0 to 70 °C
Grade	Commercial (C)
RoHS	Yes
Recommended Operating Conditions	VCC: 3 V (Min) to 3.6 V (Max) for 3.3 V nominal; 4.5 V (Min) to 5.5 V (Max) for 5 V nominal; TA: 0 °C to 70 °C
Absolute Maximum Ratings	VCC to GND: -0.3 V to 6 V; RIN to GND: ±25 V; DOUT to GND: ±13.2 V; TJ: 150 °C; Tstg: -65 °C to 150 °C
ESD Protection	±15 kV (HBM) on Pins 8, 13; ±3 kV (HBM) on other pins; ±1.5 kV (CDM)
Quiescent Current	1 μA (Typ) in automatic power-down mode; 1 mA (Typ) in normal operation (No load, VCC=3.3V to 5V)
Driver High-Level Output Voltage	5 V (Min), 5.4 V (Typ) at RL=3 kΩ to GND, DIN=GND
Driver Low-Level Output Voltage	-5 V (Min), -5.4 V (Typ) at RL=3 kΩ to GND, DIN=VCC
Short-Circuit Output Current	±35 mA (Typ), ±60 mA (Max) at VCC=3.6 V or 5.5 V, VO=0 V
External Capacitors	4 × 0.1 μF (for 3.3 V supply); C1=0.047 μF, C2-C4=0.33 μF (for 5 V supply)
Thermal Resistance (Junction-to-Ambient)	110.9 °C/W (PW Package)
Pin Count	16

All parameters (16)ExpandCollapse

Power
Voltage - Supply	3V ~ 5.5V
Environment and package
Mounting Type	Surface Mount
Operating Temperature	0°C~70°C
Package	Tape & Reel (TR); Cut Tape (CT); Digi-Reel®
Package / Case	16-TSSOP (0.173", 4.40mm Width)
Supplier Device Package	16-TSSOP
Other
Base Product Number	MAX3221
Data Rate	250kbps
Duplex	Full
Mfr	Texas Instruments
Number of Drivers/Receivers	1/1
Product Status	Active
Protocol	RS232
Receiver Hysteresis	500 mV
Series	-
Type	Transceiver

Pinout and package

Pin	Name	Function
1	EN	(Receiver Enable, Active Low)
2	C1+	(Charge-pump capacitor positive terminal)
3	V+	(Positive supply generated by charge pump)
4	C1-	(Charge-pump capacitor negative terminal)
5	C2+	(Charge-pump capacitor positive terminal)
6	C2-	(Charge-pump capacitor negative terminal)
7	V-	(Negative supply generated by charge pump)
8	RIN	(RS-232 receiver input)
9	ROUT	(Receiver output)
10	INVALID	(Invalid signal indicator, Active Low)
11	DIN	(Driver input)
12	FORCEON	(Automatic power-down control input)
13	DOUT	(RS-232 driver output)
14	GND	(Ground)
15	VCC	(Supply voltage)
16	FORCEOFF	(Automatic power-down control input)

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DatasheetDatasheet · 1.1 MB · 2026-10-29

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