SGS Thomson Microelectronics ST3232CTR, ST3232CN, ST3232CD, ST3232BWR, ST3232BW Datasheet

ST3232

3 TO 5.5V, LOW POWER, UP TO 400KBPS, RS-232 DRIVERS AND RECEIVERS

■300μA SUPPLY CURRENT

■300Kbps MINIMUM GUARENTEED DATA RATE

■6V/μs MINIMUM GUARANTEED SLEW RATE

■MEET EIA/TIA-232 SPECIFICATIONS DOWN TO 3V

■AVAILABLE IN DIP-16, SO-16, SO-16 LARGE AND TSSOP16

DESCRIPTION

The ST3232 is a 3V powered EIA/TIA-232 and V.28/V.24 communication interface with low power requirements, high data-rate capabilities. ST3232 has a proprietary low dropout transmitter output stage providing true RS-232 performance from 3 to 5.5V supplies. The device requires only four small 0.1μF standard external capacitors for operations from 3V supply.

The ST3232 has two receivers and two drivers. The device is guaranteed to run at data rates of 250Kbps while maintaining RS-232 output levels. Typical applications are Notebook, Subnotebook and Palmtop Computers, Battery Powered Equipment, Hand-Held Equipment, Peripherals and Printers.

DIP

SOP

SOP Large

TSSOP

ORDERING CODES

	Type	Temperature	Package	Comments
		Range
	ST3232CN	0 to 70 °C	DIP-16	25parts per tube / 40tube per box
	ST3232BN	-40 to 85 °C	DIP-16	25parts per tube / 40tube per box
	ST3232CD	0 to 70 °C	SO-16 (Tube)	50parts per tube / 20tube per box
	ST3232BD	-40 to 85 °C	SO-16 (Tube)	50parts per tube / 20tube per box
	ST3232CDR	0 to 70 °C	SO-16 (Tape & Reel)	2500 parts per reel
	ST3232BDR	-40 to 85 °C	SO-16 (Tape & Reel)	2500 parts per reel
	ST3232CW	0 to 70 °C	SO-16 Large (Tube)	49parts per tube / 25tube per box
	ST3232BW	-40 to 85 °C	SO-16 Large (Tube)	49parts per tube / 25tube per box
	ST3232CWR	0 to 70 °C	SO-16 Large (Tape & Reel)	1000 parts per reel
	ST3232BWR	-40 to 85 °C	SO-16 Large (Tape & Reel)	1000 parts per reel
	ST3232CTR	0 to 70 °C	TSSOP16 (Tape & Reel)	2500 parts per reel
	ST3232BTR	-40 to 85 °C	TSSOP16 (Tape & Reel)	2500 parts per reel

May 2002

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ST3232

PIN CONFIGURATION

PIN DESCRIPTION

PlN N°	SYMBOL	NAME AND FUNCTION
1	C1+	Positive Terminal for the first Charge Pump Capacitor
2	V+	Doubled Voltage Terminal
3	C1-	Negative Terminal for the first Charge Pump Capacitor
4	C2+	Positive Terminal for the second Charge Pump Capacitor
5	C2-	Negative Terminal for the second Charge Pump Capacitor
6	V-	Inverted Voltage Terminal
7	T2OUT	Second Transmitter Output Voltage
8	R2IN	Second Receiver Input Voltage
9	R2OUT	Second Receiver Output Voltage
10	T2IN	Second Transmitter Input Voltage
11	T1IN	First Transmitter Input Voltage
12	R1OUT	First Receiver Output Voltage
13	R1IN	First Receiver Input Voltage
14	T1OUT	First Transmitter Output Voltage
15	GND	Ground
16	VCC	Supply Voltage

ABSOLUTE MAXIMUM RATINGS

Symbol	Parameter	Value	Unit
VCC	Supply Voltage	-0.3 to 6	V
V+	Doubled Voltage Terminal	(VCC - 0.3) to 7	V
V-	Inverted Voltage Terminal	0.3 to -7	V
V+ +|V-|		13	V
TIN	Transmitter Input Voltage Range	-0.3 to 6	V
RIN	Receiver Input Voltage Range	± 25	V
TOUT	Transmitter Output Voltage Range	± 13.2	V
ROUT	Receiver Output Voltage Range	-0.3 to (VCC + 0.3)	V
tSHORT	Transmitter Output Short to GND Time	Continuous

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. V+ and V- can have a maximum magnitude of +7V, but their absolute addition can not exceed 13 V.

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ST3232

ELECTRICAL CHARACTERISTICS

(C1 - C4 = 0.1μF, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA = 25°C)

Symbol	Parameter		Test Conditions		Min.	Typ.	Max.	Unit
ISUPPLY	VCC Power Supply Current	No Load	VCC = 3V ±10%	TA = 25°C		0.3	1	mA
		No Load	VCC = 5V ±10%	TA = 25°C		1	2	mA

LOGIC INPUT ELECTRICAL CHARACTERISTICS

(C1 - C4 = 0.1μF, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA = 25°C)

Symbol	Parameter	Test Conditions	Min.	Typ.	Max.	Unit
VTIL	Input Logic Threshold Low	T-IN (Note 1)			0.8	V
VTIH	Input Logic Threshold High	VCC = 3.3V	2			V
		VCC = 5V	2.4			V
IIL	Input Leakage Current	T-IN		± 0.01	± 1	μA

Note 1: Transmitter input hysteresis is typically 250mV

TRANSMITTER ELECTRICAL CHARACTERISTICS

(C1 - C4 = 0.1μF tested at VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA = 25°C)

Symbol	Parameter	Test Conditions		Min.	Typ.	Max.	Unit
VTOUT	Output Voltage Swing	All Transmitter outputs are loaded with		± 5	± 5.4		V
		3KΩ to GND
RTOUT	Transmitter Output	VCC = V+ = V- = 0V	VOUT = ± 2V	300	10M		Ω
	Resistance
ITSC	Output Short Circuit	VCC = 3V to 5V	VOUT = ± 12V			± 60	mA
	Current

RECEIVER ELECTRICAL CHARACTERISTICS

(C1 - C4 = 0.1μF tested at VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA = 25°C)

Symbol	Parameter		Test Conditions	Min.	Typ.	Max.	Unit
VRIN	Receiver Input Voltage			-25		25	V
	Operating Range
VRIL	RS-232 Input Threshold	TA = 25°C	V CC = 3.3V	0.6	1.2		V
	Low	TA = 25°C	V CC = 5V	0.8	1.5		V
VRIH	RS-232 Input Threshold	TA = 25°C	V CC = 3.3V		1.5	2.4	V
	High	TA = 25°C	V CC = 5V		1.8	2.4	V
VRIHYS	Input Hysteresis				0.3		V
RRIN	Input Resistance	TA = 25°C		3	5	7	K Ω
VROL	TTL/CMOS Output Voltage	IOUT = 1.6mA				0.4	V
	Low
VROH	TTL/CMOS Output Voltage	IOUT = -1mA		VCC-0.6	VCC-0.1		V
	High

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ST3232

TIMING CHARACTERISTICS

(C1 - C4 = 0.1μF, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA = 25°C)

Symbol	Parameter		Test Conditions		Min.	Typ.	Max.	Unit
DR	Data Transfer Rate	RL = 3KΩ	CL2= 1000pF		300	400		Kbps
		one trasmitter switching
tPHLR	Propagation Delay Input to	RXIN = RXOUT		CL = 150pF		0.2		μs
tPLHR	Output
|tPHLT	Transmitter Propagation	(Note 1)				100		ns
- tTHL|	Delay Difference
|tPHLR	Receiver Propagation Delay					50		ns
- tTHR|	Difference
SRT	Trnasition Slew Rate	TA = 25°C	R L = 3KΩ to 7KΩ VCC = 3.3V
		measured from +3V to -3V or -3V to +3V			6		30	V/μs
		CL = 150pF to 1000pF
		CL = 150pF to 2500pF			4		30	V/μs
Transmitter Skew is measured at the transmitter zero cross points

APPLICATION CIRCUITS

CAPACITANCE VALUE (μF)

VCC	C1	C2	C3	C4	Cbypass
3.0 to 3.6	0.1	0.1	0.1	0.1	0.1
4.5 to 5.5	0.047	0.33	0.33	0.33	0.33

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