SGS Thomson Microelectronics ST3232ECWR, ST3232ECTR, ST3232ECN, ST3232ECDR, ST3232ECD Datasheet

ST3232E

±15KV ESD-PROTECTED, 3 TO 5.5V, LOW POWER, UP TO 250KBPS, RS-232 DRIVERS AND RECEIVERS

■ESD PROTECTIO FOR RS-232 I/O PINS ±15KV HUMAN BODY MODEL

±8KV IEC 1000-4-2 CONTACT DISCHARGE

■300μA SUPPLY CURRENT

■250Kbps 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 SSOP16 AND TSSOP16

DESCRIPTION

The ST3232E is a 3V powered EIA/TIA-232 and V.28/V.24 communication interfaces with low power requirements, high data-rate capabilities and enhanced electrostatic discharge (ESD) protection to ±8kV using IEC1000-4-2 Contact Discharge and ±15kV using the Human Body Model. ST3232E has a proprietary low dropout transmitter output stage providing true RS-232 performance from 3 to 5V supplies witha a dual charge pump. The charge pump requires only four small 0.1μF standard external capacitors for operations from 3V supply.

The ST3232E has two receivers and two drivers.

DIP		SOP
SOP Large	SSOP	TSSOP

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.

ORDERING CODES

	Type	Temperature	Package	Comments
		Range
	ST3232ECN	0 to 70 °C	DIP-16	25parts per tube / 40tube per box
	ST3232EBN	-40 to 85 °C	DIP-16	25parts per tube / 40tube per box
	ST3232ECD	0 to 70 °C	SO-16 (Tube)	50parts per tube / 20tube per box
	ST3232EBD	-40 to 85 °C	SO-16 (Tube)	50parts per tube / 20tube per box
	ST3232ECDR	0 to 70 °C	SO-16 (Tape & Reel)	2500 parts per reel
	ST3232EBDR	-40 to 85 °C	SO-16 (Tape & Reel)	2500 parts per reel
	ST3232ECW	0 to 70 °C	SO-16 Large (Tube)	50parts per tube / 20tube per box
	ST3232EBW	-40 to 85 °C	SO-16 Large (Tube)	50parts per tube / 20tube per box
	ST3232ECWR	0 to 70 °C	SO-16 Large (Tape & Reel)	1000 parts per reel
	ST3232EBWR	-40 to 85 °C	SO-16 Large (Tape & Reel)	1000 parts per reel
	ST3232ECPR	0 to 70 °C	SSOP16 (Tape & Reel)	1350 parts per reel
	ST3232EBPR	-40 to 85 °C	SSOP16 (Tape & Reel)	1350 parts per reel
	ST3232ECTR	0 to 70 °C	TSSOP16 (Tape & Reel)	2500 parts per reel
	ST3232EBTR	-40 to 85 °C	TSSOP16 (Tape & Reel)	2500 parts per reel
	April 2003			1/16

ST3232E

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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						ST3232E
ESD PERFORMANCE: TRANSMITTER OUTPUTS, RECEIVER INPUTS
Symbol	Parameter	Test Conditions		Min.	Typ.	Max.	Unit
ESD	ESD Protection Voltage	Human Body Model		±15			kV
ESD	ESD Protection Voltage	IEC-1000-4-2		±8			kV

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 or 5V TA = 25°C		0.3	1	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			0.8	V
VHYS	Transmitter Input			0.25		V
	Histeresys
VTIH	Input Logic Threshold High	VCC = 3.3V	2			V
		VCC = 5V	2.4
IIL	Input Leakage Current	T-IN		± 0.01	± 1	μA

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				± 60		mA
	Current
ITOL	Output Leakage Current	VCC = 0V or 3V to 5.5V	VOUT = ± 12V			± 25	μA
		Transmitters Disable

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ST3232E

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	1.1		V
	Low
		TA = 25°C	V CC = 5V	0.8	1.5
VRIH	RS-232 Input Threshold	TA = 25°C	V CC = 3.3V		1.4	2.4	V
	High
		TA = 25°C	V CC = 5V		1.8	2.4
VRIHYS	Input Hysteresis				0.5		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

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		250			Kbps
		one trasmitter switching
tPHLR	Propagation Delay Input to	RXIN = RXOUT		CL = 150pF		0.15		μs
tPLHR	Output
tOER	Receiver Output Enable	Normal Operation				50		ns
	Time
tODR	Receiver Output Disable	Normal Operation				50		ns
	Time
|tPHLT	Transmitter Propagation	(Note 1)				200		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

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ST3232E

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	0.1
3.0 to 5.5	0.1	0.47	0.47	0.47	0.1

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