SGS Thomson Microelectronics ST232CWR, ST232BDR, ST232BWR, ST232BW, ST232BTR Datasheet

	ST232
	5V POWERED MULTI-CHANNEL
	RS-232 DRIVERS AND RECEIVERS

■SUPPLY VOLTAGE RANGE: 4.5 TO 5.5V

■SUPPLY CURRENT NO LOAD (TYP): 5mA

■TRANSMITTER OUTPUT VOLTAGESWING (TYP): ±7.8V

■CONTROLLED OUTPUT SLEW RATE

■RECEIVER INPUT VOLTAGE RANGE: ±30V

■DATA RATE (TYP): 220Kbps

■OPERATING TEMPERATURE RANGE: -40 TO 85 oC, 0 TO 70 oC

■COMPATIBLE WITH MAX232 AND MAX202

DESCRIPTION

The ST232 is a 2 driver, 2 receiver device following EIA/TIA-232 and V.28 communication standard. It is particularly suitable for applications where ±12V is not available. The ST232 uses a single 5V power supply and only four external capacitors (0.1μF). Typical applications are in: Portable Computers, Low Power Modems, Interfaces Translation, Battery Powered RS-232 System, Multi-Drop RS-232 Networks.

ORDER CODES

N	D
(Plastic Package)	(Micro Package)

W	T
(Micro Package Large)	(TSSOP Package)

Type	T emperature	Packag e	Comments
	Ran ge
ST232CN	0 to 70 oC	DIP-16	25 parts per tube / 40 tube per box
ST232BN	-40 to 85 oC	DIP-16	25 parts per tube / 40 tube per box
ST232CD	0 to 70 oC	SO-16 (Tube)	50 parts per tube / 20 tube per box
ST232BD	-40 to 85 oC	SO-16 (Tube)	50 parts per tube / 20 tube per box
ST232CDR	0 to 70 oC	SO-16 (Tape & Reel)	2500 parts per reel
ST232BDR	-40 to 85 oC	SO-16 (Tape & Reel)	2500 parts per reel
ST232CW	0 to 70 oC	SO-16 Large (Tube)	49 parts per tube / 25 tube per box
ST232BW	-40 to 85 oC	SO-16 Large (Tube)	49 parts per tube / 25 tube per box
ST232CWR	0 to 70 oC	SO-16 Large (Tape & Reel)	1000 parts per reel
ST232BWR	-40 to 85 oC	SO-16 Large (Tape & Reel)	1000 parts per reel
ST232CT	0 to 70 oC	TSSOP16 (Tube)	only for samples
ST232BT	-40 to 85 oC	TSSOP16 (Tube)	only for samples
ST232CTR	0 to 70 oC	TSSOP16 (Tape & Reel)	2500 parts per reel
ST232BTR	-40 to 85 oC	TSSOP16 (Tape & Reel)	2500 parts per reel

February 2001

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ST232

PIN CONFIGURATION

PIN DESCRIPTION

PIN No	SYMBOL	NAME AND F UNCTION
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 (Note 1)

Symbol	Parameter	Val ue	Unit
VCC	Supply Voltage	-0.3 to 6	V
TIN	Transmitter Input Voltage Range	-0.3 to (VCC + 0.3)	V
RIN	Receiver Input Voltage Range	±30	V
TOUT	Transmitter Output Voltage Range	(V+ + 0.3) to (V- - 0.3)	V
ROUT	Receiver Output Voltage Range	-0.3 to (VCC + 0.3)	V
TSCTOUT	Short Circuit Duration on TOUT	infinite
Tstg	Storage Temperature Range	-65 to +150	oC

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. Note1: No external supply can be applied toV+ terminal and V- terminal.

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ST232

ELECTRICAL CHARACTERISTICS

(C1 -C4 = 0.1μF, VCC = 5V ± 10% TA = -40 to 85 oC, unless otherwise specified. Typical Valus are referred to TA = 25 oC)

Symb ol	Parameter	T est Cond it ion s	Value		Un it
			Min. T yp. Max.
ISUPPLY	VCC Power Supply Current	No Load, TA = 25 oC	5	10	mA

TRANSMITTER ELECTRICAL CHARACTERISTICS

(C1 -C4 = 0.1μF, VCC = 5V ± 10%, TA = -40 to 85 oC, unless otherwise specified. Typical Valus are referred to TA = 25 oC)

Symb ol	Parameter	T est Cond it ion s		Value		Un it
			Min. T yp. Max.
VTOUT	Output Voltage Swing	All Transmitter outputs are	±5	±7.8		V
		loaded with 3KΩ to GND
ITIL	Logic Pull-Up Current	TIN = 0 V		15	200	μA
VTIL	Input Logic Threshold Low				0.8	V
VTIH	Input Logic Threshold High		2			V
SRT	Transition Slew Rate	TA = 25 oC, VCC = 5 V,		7	30	V/μs
		RL = 3 to 7 KΩ,
		CL= 50 to 2500 pF (Note 1)
DR	Data Rate	(Note 2)	120	220		Kbits/s
RTOUT	Transmitter Output Resistance	VCC = V+ = V- = 0V	300			Ω
		VOUT = ± 2 V
ISC	Transmitter Output Short Circuit	one TXOUT to GND		±10	±60	mA
	Current

Note 1: Measured from 3V to -3Vor from -3V to 3V.

Note 2: One trasmitter output is loaded with RL = 3KΩ to7KΩ, CL = 50to 1000pF

RECEIVER ELECTRICAL CHARACTERISTICS

(C1 -C4 = 0.1μF, VCC = 5V ± 10%, TA = -40 to 85 oC, unless otherwise specified. Typical Valus are referred to TA = 25 oC)

Symb ol		Parameter	T est Cond it ion s			Value		Un it
					Min. T yp. Max.
VRIN	Receiver Input Voltage Operating				-30		30	V
	Range
RRIN	RS-232 Input Resistance		TA = 25 oC,	VCC = 5 V,	3	5	7	KΩ
			VRIN = 5 V
VRIL	RS-232	Input Logic Threshold Low	TA = 25 oC,	VCC = 5 V	0.8	1.2		V
VRIH	RS-232	Input Logic Threshold High	TA = 25 oC,	VCC = 5 V		1.7	2.4	V
VRIHYS	RS-232	Input Hysteresis	VCC = 5 V		0.2	0.5	1	V
VROL	TTL/CMOS Output Voltage Low		IOUT = 3.2mA (to VCC)				0.4	V
VROH	TTL/CMOS Output Voltage High		IOUT = 1mA (to GND)		3.5	VCC-0.4		V
tdR	Propagation Delay Time		CL=150pF (Note 1)			0.3	1	μs
ISCR	Receiver Output Short Circuit Current					±10		mA

Note 1: RS-232 IN to TTL-CMOS OUT (from 50% to 50%)

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ST232

APPLICATION CIRCUITS (note 1, note 2)

			+5V INPUT
		+
		C5
	1		16
		C1+	Vcc
C1	+		+5V TO +10V
			VOLTAGE
	3	C1-
			DOUBLER
	4 C2+
C2	+		+10V TO -10V
			VOLTAGE
	5 C2-		INVERTER
			+5V
	11 T1IN		400K
			T1
			+5V
TTL / CMOS INPUTS			400K
	10 T2IN
			T2
	12	R1OUT	R1
TTL / CMOS OUTPUTS
	9	R2OUT	R2

GND 15

C3 +

2

V+ +10V

V-	6	-10V

C4	+

T1OUT 14

RS 232 OUTPUTS

T2OUT 7

R1IN 13

5K

RS 232 INPUTS

R2IN 8

5K

Note 1: C1-4 capacitors can even be 1 μF ones.

Note 2: C1-4 canbe common or biased capacitors.

Capacitance Value (μF)

C1	C2	C3	C4	C5
0.1	0.1	0.1	0.1	0.1

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